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Diffstat (limited to 'guides/source')
48 files changed, 1409 insertions, 732 deletions
diff --git a/guides/source/2_2_release_notes.md b/guides/source/2_2_release_notes.md index fbb438ca70..ac5833e069 100644 --- a/guides/source/2_2_release_notes.md +++ b/guides/source/2_2_release_notes.md @@ -3,7 +3,7 @@ Ruby on Rails 2.2 Release Notes =============================== -Rails 2.2 delivers a number of new and improved features. This list covers the major upgrades, but doesn't include every little bug fix and change. If you want to see everything, check out the [list of commits](http://github.com/rails/rails/commits/2-2-stable) in the main Rails repository on GitHub. +Rails 2.2 delivers a number of new and improved features. This list covers the major upgrades, but doesn'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/2-2-stable) in the main Rails repository on GitHub. Along with Rails, 2.2 marks the launch of the [Ruby on Rails Guides](http://guides.rubyonrails.org/), the first results of the ongoing [Rails Guides hackfest](http://hackfest.rubyonrails.org/guide). This site will deliver high-quality documentation of the major features of Rails. @@ -22,7 +22,7 @@ Rails 2.2 supplies an easy system for internationalization (or i18n, for those o * More information : * [Official Rails i18 website](http://rails-i18n.org) * [Finally. Ruby on Rails gets internationalized](https://web.archive.org/web/20140407075019/http://www.artweb-design.de/2008/7/18/finally-ruby-on-rails-gets-internationalized) - * [Localizing Rails : Demo application](http://github.com/clemens/i18n_demo_app) + * [Localizing Rails : Demo application](https://github.com/clemens/i18n_demo_app) ### Compatibility with Ruby 1.9 and JRuby @@ -34,7 +34,7 @@ Documentation The internal documentation of Rails, in the form of code comments, has been improved in numerous places. In addition, the [Ruby on Rails Guides](http://guides.rubyonrails.org/) project is the definitive source for information on major Rails components. In its first official release, the Guides page includes: * [Getting Started with Rails](getting_started.html) -* [Rails Database Migrations](migrations.html) +* [Rails Database Migrations](active_record_migrations.html) * [Active Record Associations](association_basics.html) * [Active Record Query Interface](active_record_querying.html) * [Layouts and Rendering in Rails](layouts_and_rendering.html) @@ -45,7 +45,6 @@ The internal documentation of Rails, in the form of code comments, has been impr * [A Guide to Testing Rails Applications](testing.html) * [Securing Rails Applications](security.html) * [Debugging Rails Applications](debugging_rails_applications.html) -* [Performance Testing Rails Applications](performance_testing.html) * [The Basics of Creating Rails Plugins](plugins.html) All told, the Guides provide tens of thousands of words of guidance for beginning and intermediate Rails developers. @@ -59,7 +58,7 @@ rake doc:guides This will put the guides inside `Rails.root/doc/guides` and you may start surfing straight away by opening `Rails.root/doc/guides/index.html` in your favourite browser. * Lead Contributors: [Rails Documentation Team](credits.html) -* Major contributions from [Xavier Noria":http://advogato.org/person/fxn/diary.html and "Hongli Lai](http://izumi.plan99.net/blog/.) +* Major contributions from [Xavier Noria](http://advogato.org/person/fxn/diary.html) and [Hongli Lai](http://izumi.plan99.net/blog/). * More information: * [Rails Guides hackfest](http://hackfest.rubyonrails.org/guide) * [Help improve Rails documentation on Git branch](http://weblog.rubyonrails.org/2008/5/2/help-improve-rails-documentation-on-git-branch) @@ -389,7 +388,7 @@ To avoid deployment issues and make Rails applications more self-contained, it's You can unpack or install a single gem by specifying `GEM=_gem_name_` on the command line. -* Lead Contributor: [Matt Jones](http://github.com/al2o3cr) +* Lead Contributor: [Matt Jones](https://github.com/al2o3cr) * More information: * [What's New in Edge Rails: Gem Dependencies](http://archives.ryandaigle.com/articles/2008/4/1/what-s-new-in-edge-rails-gem-dependencies) * [Rails 2.1.2 and 2.2RC1: Update Your RubyGems](http://afreshcup.com/2008/10/25/rails-212-and-22rc1-update-your-rubygems/) @@ -411,7 +410,7 @@ Deprecated A few pieces of older code are deprecated in this release: * `Rails::SecretKeyGenerator` has been replaced by `ActiveSupport::SecureRandom` -* `render_component` is deprecated. There's a [render_components plugin](http://github.com/rails/render_component/tree/master) available if you need this functionality. +* `render_component` is deprecated. There's a [render_components plugin](https://github.com/rails/render_component/tree/master) available if you need this functionality. * Implicit local assignments when rendering partials has been deprecated. ```ruby diff --git a/guides/source/2_3_release_notes.md b/guides/source/2_3_release_notes.md index a9bde66e4b..6976848e95 100644 --- a/guides/source/2_3_release_notes.md +++ b/guides/source/2_3_release_notes.md @@ -3,7 +3,7 @@ Ruby on Rails 2.3 Release Notes =============================== -Rails 2.3 delivers a variety of new and improved features, including pervasive Rack integration, refreshed support for Rails Engines, nested transactions for Active Record, dynamic and default scopes, unified rendering, more efficient routing, application templates, and quiet backtraces. This list covers the major upgrades, but doesn't include every little bug fix and change. If you want to see everything, check out the [list of commits](http://github.com/rails/rails/commits/2-3-stable) in the main Rails repository on GitHub or review the `CHANGELOG` files for the individual Rails components. +Rails 2.3 delivers a variety of new and improved features, including pervasive Rack integration, refreshed support for Rails Engines, nested transactions for Active Record, dynamic and default scopes, unified rendering, more efficient routing, application templates, and quiet backtraces. This list covers the major upgrades, but doesn'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/2-3-stable) in the main Rails repository on GitHub or review the `CHANGELOG` files for the individual Rails components. -------------------------------------------------------------------------------- @@ -54,7 +54,7 @@ Documentation The [Ruby on Rails guides](http://guides.rubyonrails.org/) project has published several additional guides for Rails 2.3. In addition, a [separate site](http://edgeguides.rubyonrails.org/) maintains updated copies of the Guides for Edge Rails. Other documentation efforts include a relaunch of the [Rails wiki](http://newwiki.rubyonrails.org/) and early planning for a Rails Book. -* More Information: [Rails Documentation Projects](http://weblog.rubyonrails.org/2009/1/15/rails-documentation-projects.) +* More Information: [Rails Documentation Projects](http://weblog.rubyonrails.org/2009/1/15/rails-documentation-projects) Ruby 1.9.1 Support ------------------ @@ -125,7 +125,7 @@ Order.scoped_by_customer_id(12).scoped_by_status("open") There's nothing to define to use dynamic scopes: they just work. * Lead Contributor: [Yaroslav Markin](http://evilmartians.com/) -* More Information: [What's New in Edge Rails: Dynamic Scope Methods](http://archives.ryandaigle.com/articles/2008/12/29/what-s-new-in-edge-rails-dynamic-scope-methods.) +* More Information: [What's New in Edge Rails: Dynamic Scope Methods](http://archives.ryandaigle.com/articles/2008/12/29/what-s-new-in-edge-rails-dynamic-scope-methods) ### Default Scopes @@ -179,7 +179,7 @@ developers = Developer.find(:all, :group => "salary", :having => "sum(salary) > 10000", :select => "salary") ``` -* Lead Contributor: [Emilio Tagua](http://github.com/miloops) +* Lead Contributor: [Emilio Tagua](https://github.com/miloops) ### Reconnecting MySQL Connections @@ -377,7 +377,7 @@ You can write this view in Rails 2.3: * Lead Contributor: [Eloy Duran](http://superalloy.nl/) * More Information: * [Nested Model Forms](http://weblog.rubyonrails.org/2009/1/26/nested-model-forms) - * [complex-form-examples](http://github.com/alloy/complex-form-examples) + * [complex-form-examples](https://github.com/alloy/complex-form-examples) * [What's New in Edge Rails: Nested Object Forms](http://archives.ryandaigle.com/articles/2009/2/1/what-s-new-in-edge-rails-nested-attributes) ### Smart Rendering of Partials @@ -421,7 +421,7 @@ You're likely familiar with Rails' practice of adding timestamps to static asset Asset hosts get more flexible in edge Rails with the ability to declare an asset host as a specific object that responds to a call. This allows you to implement any complex logic you need in your asset hosting. -* More Information: [asset-hosting-with-minimum-ssl](http://github.com/dhh/asset-hosting-with-minimum-ssl/tree/master) +* More Information: [asset-hosting-with-minimum-ssl](https://github.com/dhh/asset-hosting-with-minimum-ssl/tree/master) ### grouped_options_for_select Helper Method @@ -498,7 +498,7 @@ Active Support has a few interesting changes, including the introduction of `Obj A lot of folks have adopted the notion of using try() to attempt operations on objects. It's especially helpful in views where you can avoid nil-checking by writing code like `<%= @person.try(:name) %>`. Well, now it's baked right into Rails. As implemented in Rails, it raises `NoMethodError` on private methods and always returns `nil` if the object is nil. -* More Information: [try()](http://ozmm.org/posts/try.html.) +* More Information: [try()](http://ozmm.org/posts/try.html) ### Object#tap Backport @@ -533,7 +533,7 @@ If you look up the spec on the "json.org" site, you'll discover that all keys in ### Other Active Support Changes * You can use `Enumerable#none?` to check that none of the elements match the supplied block. -* If you're using Active Support [delegates](http://afreshcup.com/2008/10/19/coming-in-rails-22-delegate-prefixes/,) the new `:allow_nil` option lets you return `nil` instead of raising an exception when the target object is nil. +* If you're using Active Support [delegates](http://afreshcup.com/2008/10/19/coming-in-rails-22-delegate-prefixes/) the new `:allow_nil` option lets you return `nil` instead of raising an exception when the target object is nil. * `ActiveSupport::OrderedHash`: now implements `each_key` and `each_value`. * `ActiveSupport::MessageEncryptor` provides a simple way to encrypt information for storage in an untrusted location (like cookies). * Active Support's `from_xml` no longer depends on XmlSimple. Instead, Rails now includes its own XmlMini implementation, with just the functionality that it requires. This lets Rails dispense with the bundled copy of XmlSimple that it's been carting around. @@ -559,7 +559,7 @@ Rails Metal is a new mechanism that provides superfast endpoints inside of your ### Application Templates -Rails 2.3 incorporates Jeremy McAnally's [rg](http://github.com/jeremymcanally/rg/tree/master) application generator. What this means is that we now have template-based application generation built right into Rails; if you have a set of plugins you include in every application (among many other use cases), you can just set up a template once and use it over and over again when you run the `rails` command. There's also a rake task to apply a template to an existing application: +Rails 2.3 incorporates Jeremy McAnally's [rg](https://github.com/jm/rg) application generator. What this means is that we now have template-based application generation built right into Rails; if you have a set of plugins you include in every application (among many other use cases), you can just set up a template once and use it over and over again when you run the `rails` command. There's also a rake task to apply a template to an existing application: ``` rake rails:template LOCATION=~/template.rb @@ -605,8 +605,8 @@ Deprecated A few pieces of older code are deprecated in this release: -* If you're one of the (fairly rare) Rails developers who deploys in a fashion that depends on the inspector, reaper, and spawner scripts, you'll need to know that those scripts are no longer included in core Rails. If you need them, you'll be able to pick up copies via the [irs_process_scripts](http://github.com/rails/irs_process_scripts/tree) plugin. -* `render_component` goes from "deprecated" to "nonexistent" in Rails 2.3. If you still need it, you can install the [render_component plugin](http://github.com/rails/render_component/tree/master). +* If you're one of the (fairly rare) Rails developers who deploys in a fashion that depends on the inspector, reaper, and spawner scripts, you'll need to know that those scripts are no longer included in core Rails. If you need them, you'll be able to pick up copies via the [irs_process_scripts](https://github.com/rails/irs_process_scripts/tree) plugin. +* `render_component` goes from "deprecated" to "nonexistent" in Rails 2.3. If you still need it, you can install the [render_component plugin](https://github.com/rails/render_component/tree/master). * Support for Rails components has been removed. * If you were one of the people who got used to running `script/performance/request` to look at performance based on integration tests, you need to learn a new trick: that script has been removed from core Rails now. There's a new request_profiler plugin that you can install to get the exact same functionality back. * `ActionController::Base#session_enabled?` is deprecated because sessions are lazy-loaded now. @@ -614,7 +614,7 @@ A few pieces of older code are deprecated in this release: * Some integration test helpers have been removed. `response.headers["Status"]` and `headers["Status"]` will no longer return anything. Rack does not allow "Status" in its return headers. However you can still use the `status` and `status_message` helpers. `response.headers["cookie"]` and `headers["cookie"]` will no longer return any CGI cookies. You can inspect `headers["Set-Cookie"]` to see the raw cookie header or use the `cookies` helper to get a hash of the cookies sent to the client. * `formatted_polymorphic_url` is deprecated. Use `polymorphic_url` with `:format` instead. * The `:http_only` option in `ActionController::Response#set_cookie` has been renamed to `:httponly`. -* The `:connector` and `:skip_last_comma` options of `to_sentence` have been replaced by `:words_connnector`, `:two_words_connector`, and `:last_word_connector` options. +* The `:connector` and `:skip_last_comma` options of `to_sentence` have been replaced by `:words_connector`, `:two_words_connector`, and `:last_word_connector` options. * Posting a multipart form with an empty `file_field` control used to submit an empty string to the controller. Now it submits a nil, due to differences between Rack's multipart parser and the old Rails one. Credits diff --git a/guides/source/3_0_release_notes.md b/guides/source/3_0_release_notes.md index 70b0e89799..517b38be07 100644 --- a/guides/source/3_0_release_notes.md +++ b/guides/source/3_0_release_notes.md @@ -17,7 +17,7 @@ Even if you don't give a hoot about any of our internal cleanups, Rails 3.0 is g On top of all that, we've tried our best to deprecate the old APIs with nice warnings. That means that you can move your existing application to Rails 3 without immediately rewriting all your old code to the latest best practices. -These release notes cover the major upgrades, but don't include every little bug fix and change. Rails 3.0 consists of almost 4,000 commits by more than 250 authors! If you want to see everything, check out the [list of commits](http://github.com/rails/rails/commits/3-0-stable) in the main Rails repository on GitHub. +These release notes cover the major upgrades, but don't include every little bug fix and change. Rails 3.0 consists of almost 4,000 commits by more than 250 authors! If you want to see everything, check out the [list of commits](https://github.com/rails/rails/commits/3-0-stable) in the main Rails repository on GitHub. -------------------------------------------------------------------------------- @@ -63,7 +63,7 @@ The `config.gem` method is gone and has been replaced by using `bundler` and a ` ### Upgrade Process -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. +To help with the upgrade process, a plugin named [Rails Upgrade](https://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: @@ -86,7 +86,7 @@ $ cd myapp ### 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](http://github.com/bundler/bundler,) 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. +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/bundler/bundler) 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://bundler.io/) @@ -138,14 +138,14 @@ More Information: - [Rails Edge Architecture](http://yehudakatz.com/2009/06/11/r ### 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](https://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](https://web.archive.org/web/20120718093140/http://magicscalingsprinkles.wordpress.com/2010/01/28/why-i-wrote-arel/) ### 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](https://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) @@ -155,13 +155,13 @@ 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). -More Information: - [Rails Documentation Projects](http://weblog.rubyonrails.org/2009/1/15/rails-documentation-projects.) +More Information: - [Rails Documentation Projects](http://weblog.rubyonrails.org/2009/1/15/rails-documentation-projects) 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. +A large amount of work has been done with I18n support in Rails 3, including the latest [I18n](https://github.com/svenfuchs/i18n) gem supplying many speed improvements. * I18n for any object - I18n behavior can be added to any object by including `ActiveModel::Translation` and `ActiveModel::Validations`. There is also an `errors.messages` fallback for translations. * Attributes can have default translations. @@ -309,7 +309,7 @@ More Information: 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 `remote_<method>` 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 `:remote => true` instead. For example: +What this means is that all previous `remote_<method>` helpers have been removed from Rails core and put into the [Prototype Legacy Helper](https://github.com/rails/prototype_legacy_helper). To get UJS hooks into your HTML, you now pass `:remote => true` instead. For example: ```ruby form_for @post, :remote => true @@ -575,7 +575,7 @@ The following methods have been removed because they are no longer used in the f 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](https://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 `app/mailers` by default. * Can now send email using new API with three methods: `attachments`, `headers` and `mail`. diff --git a/guides/source/3_1_release_notes.md b/guides/source/3_1_release_notes.md index feee0f9920..fd90cf9886 100644 --- a/guides/source/3_1_release_notes.md +++ b/guides/source/3_1_release_notes.md @@ -99,7 +99,7 @@ gem 'jquery-rails' # 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 ) + # config.assets.precompile `= %w( admin.js admin.css ) # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies. diff --git a/guides/source/4_2_release_notes.md b/guides/source/4_2_release_notes.md index 73e6c2c05b..a30bfc458a 100644 --- a/guides/source/4_2_release_notes.md +++ b/guides/source/4_2_release_notes.md @@ -871,7 +871,7 @@ Please refer to the [Changelog][active-support] for detailed changes. `module Foo; extend ActiveSupport::Concern; end` boilerplate. ([Commit](https://github.com/rails/rails/commit/b16c36e688970df2f96f793a759365b248b582ad)) -* New [guide](constant_autoloading_and_reloading.html) about constant autoloading and reloading. +* New [guide](autoloading_and_reloading_constants.html) about constant autoloading and reloading. Credits ------- diff --git a/guides/source/5_0_release_notes.md b/guides/source/5_0_release_notes.md index 408de13161..cc332cbf97 100644 --- a/guides/source/5_0_release_notes.md +++ b/guides/source/5_0_release_notes.md @@ -37,24 +37,141 @@ Major Features -------------- ### Action Cable -[Pull Request](https://github.com/rails/rails/pull/22586) -ToDo... +Action Cable is a new framework in Rails 5. It seamlessly integrates +[WebSockets](https://en.wikipedia.org/wiki/WebSocket) with the rest of your +Rails application. -### Rails API -[Pull Request](https://github.com/rails/rails/pull/19832) +Action Cable allows for real-time features to be written in Ruby in the +same style and form as the rest of your Rails application, while still being +performant and scalable. It's a full-stack offering that provides both a +client-side JavaScript framework and a server-side Ruby framework. You have +access to your full domain model written with Active Record or your ORM of +choice. -ToDo... +See the [Action Cable Overview](action_cable_overview.html) guide for more +information. + +### API Applications + +Rails can now be used to create slimmed down API only applications. +This is useful for creating and serving APIs similar to [Twitter](https://dev.twitter.com) or [GitHub](http://developer.github.com) API, +that can be used to serve public facing, as well as, for custom applications. + +You can generate a new api Rails app using: + +```bash +$ rails new my_api --api +``` + +This will do three main things: + +- Configure your application to start with a more limited set of middleware + than normal. Specifically, it will not include any middleware primarily useful + for browser applications (like cookies support) by default. +- Make `ApplicationController` inherit from `ActionController::API` instead of + `ActionController::Base`. As with middleware, this will leave out any Action + Controller modules that provide functionalities primarily used by browser + applications. +- Configure the generators to skip generating views, helpers and assets when + you generate a new resource. + +The application provides a base for APIs, +that can then be [configured to pull in functionality](api_app.html) as suitable for the application's needs. + +See the [Using Rails for API-only Applications](api_app.html) guide for more +information. ### Active Record attributes API -ToDo... +Defines an attribute with a type on a model. It will override the type of existing attributes if needed. +This allows control over how values are converted to and from SQL when assigned to a model. +It also changes the behavior of values passed to `ActiveRecord::Base.where`, which lets use our domain objects across much of Active Record, +without having to rely on implementation details or monkey patching. + +Some things that you can achieve with this: + +- The type detected by Active Record can be overridden. +- A default can also be provided. +- Attributes do not need to be backed by a database column. + +```ruby + +# db/schema.rb +create_table :store_listings, force: true do |t| + t.decimal :price_in_cents + t.string :my_string, default: "original default" +end + +# app/models/store_listing.rb +class StoreListing < ActiveRecord::Base +end + +store_listing = StoreListing.new(price_in_cents: '10.1') + +# before +store_listing.price_in_cents # => BigDecimal.new(10.1) +StoreListing.new.my_string # => "original default" + +class StoreListing < ActiveRecord::Base + attribute :price_in_cents, :integer # custom type + attribute :my_string, :string, default: "new default" # default value + attribute :my_default_proc, :datetime, default: -> { Time.now } # default value + attribute :field_without_db_column, :integer, array: true +end + +# after +store_listing.price_in_cents # => 10 +StoreListing.new.my_string # => "new default" +StoreListing.new.my_default_proc # => 2015-05-30 11:04:48 -0600 +model = StoreListing.new(field_without_db_column: ["1", "2", "3"]) +model.attributes # => {field_without_db_column: [1, 2, 3]} +``` + +**Creating Custom Types:** + +You can define your own custom types, as long as they respond +to the methods defined on the value type. The method `deserialize` or +`cast` will be called on your type object, with raw input from the +database or from your controllers. This is useful, for example, when doing custom conversion, +like Money data. + +**Querying:** + +When `ActiveRecord::Base.where` is called, it will +use the type defined by the model class to convert the value to SQL, +calling `serialize` on your type object. + +This gives the objects ability to specify, how to convert values when performing SQL queries. + +**Dirty Tracking:** + +The type of an attribute is given the opportunity to change how dirty +tracking is performed. + +See its +[documentation](http://api.rubyonrails.org/classes/ActiveRecord/Attributes/ClassMethods.html) +for a detailed write up. + ### Test Runner -[Pull Request](https://github.com/rails/rails/pull/19216) -ToDo... +A new test runner has been introduced to enhance the capabilities of running tests from Rails. +To use this test runner simply type `bin/rails test`. + +Test Runner is inspired from `RSpec`, `minitest-reporters`, `maxitest` and others. +It includes some of these notable advancements: +- Run a single test using line number of test. +- Run multiple tests pinpointing to line number of tests. +- Improved failure messages, which also add ease of re-running failed tests. +- Fail fast using `-f` option, to stop tests immediately on occurrence of failure, +instead of waiting for the suite to complete. +- Defer test output until the end of a full test run using the `-d` option. +- Complete exception backtrace output using `-b` option. +- Integration with `Minitest` to allow options like `-s` for test seed data, +`-n` for running specific test by name, `-v` for better verbose output and so forth. +- Colored test output. Railties -------- @@ -89,13 +206,13 @@ Please refer to the [Changelog][railties] for detailed changes. * Deprecated `config.static_cache_control` in favor of `config.public_file_server.headers`. - ([Pull Request](https://github.com/rails/rails/pull/22173)) + ([Pull Request](https://github.com/rails/rails/pull/19135)) * Deprecated `config.serve_static_files` in favor of `config.public_file_server.enabled`. ([Pull Request](https://github.com/rails/rails/pull/22173)) * Deprecated the tasks in the `rails` task namespace in favor of the `app` namespace. - (e.g. `rails:update` and `rails:template` tasks is renamed to `app:update` and `app:template`.) + (e.g. `rails:update` and `rails:template` tasks are renamed to `app:update` and `app:template`.) ([Pull Request](https://github.com/rails/rails/pull/23439)) ### Notable changes @@ -141,6 +258,17 @@ Please refer to the [Changelog][railties] for detailed changes. Spring to watch additional common files. ([commit](https://github.com/rails/rails/commit/b04d07337fd7bc17e88500e9d6bcd361885a45f8)) +* Added `--skip-action-mailer` to skip Action Mailer while generating new app. + ([Pull Request](https://github.com/rails/rails/pull/18288)) + +* Removed `tmp/sessions` directory and the clear rake task associated with it. + ([Pull Request](https://github.com/rails/rails/pull/18314)) + +* Changed `_form.html.erb` generated by scaffold generator to use local variables. + ([Pull Request](https://github.com/rails/rails/pull/13434)) + +* Disabled autoloading of classes in production environment. + ([commit](https://github.com/rails/rails/commit/a71350cae0082193ad8c66d65ab62e8bb0b7853b)) Action Pack ----------- @@ -230,6 +358,18 @@ Please refer to the [Changelog][action-pack] for detailed changes. * `ActionDispatch::IntegrationTest` and `ActionController::TestCase` deprecate positional arguments in favor of keyword arguments. ([Pull Request](https://github.com/rails/rails/pull/18323)) +* Deprecated `:controller` and `:action` path parameters. + ([Pull Request](https://github.com/rails/rails/pull/23980)) + +* Deprecated env method on controller instances. + ([commit](https://github.com/rails/rails/commit/05934d24aff62d66fc62621aa38dae6456e276be)) + +* `ActionDispatch::ParamsParser` is deprecated and was removed from the + middleware stack. To configure the parameter parsers use + `ActionDispatch::Request.parameter_parsers=`. + ([commit](https://github.com/rails/rails/commit/38d2bf5fd1f3e014f2397898d371c339baa627b1), + [commit](https://github.com/rails/rails/commit/5ed38014811d4ce6d6f957510b9153938370173b)) + ### Notable changes * Added `ActionController::Renderer` to render arbitrary templates @@ -292,9 +432,26 @@ Please refer to the [Changelog][action-pack] for detailed changes. * Added request encoding and response parsing to integration tests. ([Pull Request](https://github.com/rails/rails/pull/21671)) -* Update default rendering policies when the controller action did - not explicitly indicate a response. - ([Pull Request](https://github.com/rails/rails/pull/23827)) +* Add `ActionController#helpers` to get access to the view context + at the controller level. + ([Pull Request](https://github.com/rails/rails/pull/24866)) + +* Discarded flash messages get removed before storing into session. + ([Pull Request](https://github.com/rails/rails/pull/18721)) + +* Added support for passing collection of records to `fresh_when` and + `stale?`. + ([Pull Request](https://github.com/rails/rails/pull/18374)) + +* `ActionController::Live` became an `ActiveSupport::Concern`. That + means it can't be just included in other modules without extending + them with `ActiveSupport::Concern` or `ActionController::Live` + won't take effect in production. Some people may be using another + module to include some special `Warden`/`Devise` authentication + failure handling code as well since the middleware can't catch a + `:warden` thrown by a spawned thread which is the case when using + `ActionController::Live`. + ([More details in this issue](https://github.com/rails/rails/issues/25581)) Action View @@ -321,7 +478,7 @@ Please refer to the [Changelog][action-view] for detailed changes. * Changed the default template handler from `ERB` to `Raw`. ([commit](https://github.com/rails/rails/commit/4be859f0fdf7b3059a28d03c279f03f5938efc80)) -* Collection rendering can cache and fetches multiple partials. +* Collection rendering can cache and fetches multiple partials at once. ([Pull Request](https://github.com/rails/rails/pull/18948), [commit](https://github.com/rails/rails/commit/e93f0f0f133717f9b06b1eaefd3442bd0ff43985)) @@ -332,9 +489,12 @@ Please refer to the [Changelog][action-view] for detailed changes. button on submit to prevent double submits. ([Pull Request](https://github.com/rails/rails/pull/21135)) -* Collection rendering can cache and fetch multiple partials at once. - ([Pull Request](https://github.com/rails/rails/pull/21135)) +* Partial template name no longer has to be a valid Ruby identifier. + ([commit](https://github.com/rails/rails/commit/da9038e)) +* The `datetime_tag` helper now generates an input tag with the type of + `datetime-local`. + ([Pull Request](https://github.com/rails/rails/pull/25469)) Action Mailer ------------- @@ -421,8 +581,10 @@ Please refer to the [Changelog][active-record] for detailed changes. [activemodel-serializers-xml](https://github.com/rails/activemodel-serializers-xml) gem. ([Pull Request](https://github.com/rails/rails/pull/21161)) -* Removed support for the legacy `mysql` database adapter from core. It will - live on in a separate gem for now, but most users should just use `mysql2`. +* Removed support for the legacy `mysql` database adapter from core. Most users should + be able to use `mysql2`. It will be converted to a separate gem when when we find someone + to maintain it. ([Pull Request 1](https://github.com/rails/rails/pull/22642), + [Pull Request 2](https://github.com/rails/rails/pull/22715)) * Removed support for the `protected_attributes` gem. ([commit](https://github.com/rails/rails/commit/f4fbc0301021f13ae05c8e941c8efc4ae351fdf9)) @@ -430,6 +592,12 @@ Please refer to the [Changelog][active-record] for detailed changes. * Removed support for PostgreSQL versions below 9.1. ([Pull Request](https://github.com/rails/rails/pull/23434)) +* Removed support for `activerecord-deprecated_finders` gem. + ([commit](https://github.com/rails/rails/commit/78dab2a8569408658542e462a957ea5a35aa4679)) + +* Removed `ActiveRecord::ConnectionAdapters::Column::TRUE_VALUES` constant. + ([commit](https://github.com/rails/rails/commit/a502703c3d2151d4d3b421b29fefdac5ad05df61)) + ### Deprecations * Deprecated passing a class as a value in a query. Users should pass strings @@ -487,6 +655,18 @@ Please refer to the [Changelog][active-record] for detailed changes. Use the `{insert|update|delete}` public methods instead. ([Pull Request](https://github.com/rails/rails/pull/23086)) +* Deprecated `use_transactional_fixtures` in favor of + `use_transactional_tests` for more clarity. + ([Pull Request](https://github.com/rails/rails/pull/19282)) + +* Deprecated passing a column to `ActiveRecord::Connection#quote`. + ([commit](https://github.com/rails/rails/commit/7bb620869725ad6de603f6a5393ee17df13aa96c)) + +* Added an option `end` to `find_in_batches` that complements the `start` + parameter to specify where to stop batch processing. + ([Pull Request](https://github.com/rails/rails/pull/12257)) + + ### Notable changes * Added a `foreign_key` option to `references` while creating the table. @@ -495,16 +675,13 @@ Please refer to the [Changelog][active-record] for detailed changes. * New attributes API. ([commit](https://github.com/rails/rails/commit/8c752c7ac739d5a86d4136ab1e9d0142c4041e58)) -* Added `:enum_prefix`/`:enum_suffix` option to `enum` - definition. ([Pull Request](https://github.com/rails/rails/pull/19813)) +* Added `:_prefix`/`:_suffix` option to `enum` definition. + ([Pull Request](https://github.com/rails/rails/pull/19813), + [Pull Request](https://github.com/rails/rails/pull/20999)) * Added `#cache_key` to `ActiveRecord::Relation`. ([Pull Request](https://github.com/rails/rails/pull/20884)) -* Require `belongs_to` by default. - ([Pull Request](https://github.com/rails/rails/pull/18937)) - Deprecate - `required` option in favor of `optional` for `belongs_to` - * Changed the default `null` value for `timestamps` to `false`. ([commit](https://github.com/rails/rails/commit/a939506f297b667291480f26fa32a373a18ae06a)) @@ -524,16 +701,14 @@ Please refer to the [Changelog][active-record] for detailed changes. operator to combine WHERE or HAVING clauses. ([commit](https://github.com/rails/rails/commit/b0b37942d729b6bdcd2e3178eda7fa1de203b3d0)) -* Added `:time` option added for `#touch`. - ([Pull Request](https://github.com/rails/rails/pull/18956)) - * Added `ActiveRecord::Base.suppress` to prevent the receiver from being saved during the given block. ([Pull Request](https://github.com/rails/rails/pull/18910)) * `belongs_to` will now trigger a validation error by default if the association is not present. You can turn this off on a per-association basis - with `optional: true`. + with `optional: true`. Also deprecate `required` option in favor of `optional` + for `belongs_to`. ([Pull Request](https://github.com/rails/rails/pull/18937)) * Added `config.active_record.dump_schemas` to configure the behavior of @@ -592,10 +767,47 @@ Please refer to the [Changelog][active-record] for detailed changes. with comments stored in database metadata for PostgreSQL & MySQL. ([Pull Request](https://github.com/rails/rails/pull/22911)) -* Added prepared statements support to `mysql2` adapter, for mysql2 0.4.4+, - Previously this was only supported on the deprecated `mysql` legacy adapter. +* Added prepared statements support to `mysql2` adapter, for mysql2 0.4.4+, + Previously this was only supported on the deprecated `mysql` legacy adapter. To enable, set `prepared_statements: true` in config/database.yml. - ([Pull Request](https://github.com/rails/rails/pull/23461)) + ([Pull Request](https://github.com/rails/rails/pull/23461)) + +* Added ability to call `ActionRecord::Relation#update` on relation objects + which will run validations on callbacks on all objects in the relation. + ([Pull Request](https://github.com/rails/rails/pull/11898)) + +* Added `:touch` option to the `save` method so that records can be saved without + updating timestamps. + ([Pull Request](https://github.com/rails/rails/pull/18225)) + +* Added expression indexes and operator classes support for PostgreSQL. + ([commit](https://github.com/rails/rails/commit/edc2b7718725016e988089b5fb6d6fb9d6e16882)) + +* Added `:index_errors` option to add indexes to errors of nested attributes. + ([Pull Request](https://github.com/rails/rails/pull/19686)) + +* Added support for bidirectional destroy dependencies. + ([Pull Request](https://github.com/rails/rails/pull/18548)) + +* Added support for `after_commit` callbacks in transactional tests. + ([Pull Request](https://github.com/rails/rails/pull/18458)) + +* Added `foreign_key_exists?` method to see if a foreign key exists on a table + or not. + ([Pull Request](https://github.com/rails/rails/pull/18662)) + +* Added `:time` option to `touch` method to touch records with different time + than the current time. + ([Pull Request](https://github.com/rails/rails/pull/18956)) + +* Change transaction callbacks to not swallow errors. + Before this change any errors raised inside a transaction callback + were getting rescued and printed in the logs, unless you used + the (newly deprecated) `raise_in_transactional_callbacks = true` option. + + Now these errors are not rescued anymore and just bubble up, matching the + behavior of other callbacks. + ([commit](https://github.com/rails/rails/commit/07d3d402341e81ada0214f2cb2be1da69eadfe72)) Active Model ------------ @@ -612,6 +824,9 @@ Please refer to the [Changelog][active-model] for detailed changes. [activemodel-serializers-xml](https://github.com/rails/activemodel-serializers-xml) gem. ([Pull Request](https://github.com/rails/rails/pull/21161)) +* Removed `ActionController::ModelNaming` module. + ([Pull Request](https://github.com/rails/rails/pull/18194)) + ### Deprecations * Deprecated returning `false` as a way to halt Active Model and @@ -647,6 +862,9 @@ Please refer to the [Changelog][active-model] for detailed changes. * Validate multiple contexts on `valid?` and `invalid?` at once. ([Pull Request](https://github.com/rails/rails/pull/21069)) +* Change `validates_acceptance_of` to accept `true` as default value + apart from `1`. + ([Pull Request](https://github.com/rails/rails/pull/18439)) Active Job ----------- @@ -718,6 +936,9 @@ Please refer to the [Changelog][active-support] for detailed changes. * Removed deprecated `ThreadSafe::Cache`. Use `Concurrent::Map` instead. ([Pull Request](https://github.com/rails/rails/pull/21679)) +* Removed `Object#itself` as it is implemented in Ruby 2.2. + ([Pull Request](https://github.com/rails/rails/pull/18244)) + ### Deprecations * Deprecated `MissingSourceFile` in favor of `LoadError`. @@ -745,8 +966,10 @@ Please refer to the [Changelog][active-support] for detailed changes. `ActiveSupport::Cache::MemCachedStore#escape_key`, and `ActiveSupport::Cache::FileStore#key_file_path`. Use `normalize_key` instead. + ([Pull Request](https://github.com/rails/rails/pull/22215), + [commit](https://github.com/rails/rails/commit/a8f773b0)) - Deprecated `ActiveSupport::Cache::LocaleCache#set_cache_value` in favor of `write_cache_value`. +* Deprecated `ActiveSupport::Cache::LocaleCache#set_cache_value` in favor of `write_cache_value`. ([Pull Request](https://github.com/rails/rails/pull/22215)) * Deprecated passing arguments to `assert_nothing_raised`. @@ -785,7 +1008,7 @@ Please refer to the [Changelog][active-support] for detailed changes. * Added `#prev_day` and `#next_day` counterparts to `#yesterday` and `#tomorrow` for `Date`, `Time`, and `DateTime`. - ([Pull Request](httpshttps://github.com/rails/rails/pull/18335)) + ([Pull Request](https://github.com/rails/rails/pull/18335)) * Added `SecureRandom.base58` for generation of random base58 strings. ([commit](https://github.com/rails/rails/commit/b1093977110f18ae0cafe56c3d99fc22a7d54d1b)) @@ -806,7 +1029,7 @@ Please refer to the [Changelog][active-support] for detailed changes. ([commit](https://github.com/rails/rails/commit/a5e507fa0b8180c3d97458a9b86c195e9857d8f6)) * Added `Integer#positive?` and `Integer#negative?` query methods - in the vein of `Fixnum#zero?`. + in the vein of `Integer#zero?`. ([commit](https://github.com/rails/rails/commit/e54277a45da3c86fecdfa930663d7692fd083daa)) * Added a bang version to `ActiveSupport::OrderedOptions` get methods which will raise @@ -839,6 +1062,16 @@ Please refer to the [Changelog][active-support] for detailed changes. * `ActiveSupport::Duration` now supports ISO8601 formatting and parsing. ([Pull Request](https://github.com/rails/rails/pull/16917)) +* `ActiveSupport::JSON.decode` now supports parsing ISO8601 local times when + `parse_json_times` is enabled. + ([Pull Request](https://github.com/rails/rails/pull/23011)) + +* `ActiveSupport::JSON.decode` now return `Date` objects for date strings. + ([Pull Request](https://github.com/rails/rails/pull/23011)) + +* Added ability to `TaggedLogging` to allow loggers to be instantiated multiple + times so that they don't share tags with each other. + ([Pull Request](https://github.com/rails/rails/pull/9065)) Credits ------- diff --git a/guides/source/action_cable_overview.md b/guides/source/action_cable_overview.md index a4d9647057..4b9a22101a 100644 --- a/guides/source/action_cable_overview.md +++ b/guides/source/action_cable_overview.md @@ -6,47 +6,49 @@ incorporate real-time features into your Rails application. After reading this guide, you will know: +* What Action Cable is and its integration on backend and frontend * How to setup Action Cable * How to setup channels +* Deployment and Architecture setup for running Action Cable + +-------------------------------------------------------------------------------- Introduction ------------ -Action Cable seamlessly integrates WebSockets with the rest of your Rails application. -It allows for real-time features to be written in Ruby in the same style and form as -the rest of your Rails application, while still being performant and scalable. It's -a full-stack offering that provides both a client-side JavaScript framework and a -server-side Ruby framework. You have access to your full domain model written with -Active Record or your ORM of choice. +Action Cable seamlessly integrates +[WebSockets](https://en.wikipedia.org/wiki/WebSocket) with the rest of your +Rails application. It allows for real-time features to be written in Ruby in the +same style and form as the rest of your Rails application, while still being +performant and scalable. It's a full-stack offering that provides both a +client-side JavaScript framework and a server-side Ruby framework. You have +access to your full domain model written with Active Record or your ORM of +choice. What is Pub/Sub --------------- -Pub/Sub, or Publish-Subscribe, refers to a message queue paradigm whereby senders -of information (publishers), send data to an abstract class of recipients (subscribers), -without specifying individual recipients. Action Cable uses this approach to communicate -between the server and many clients. - -What is Action Cable --------------------- - -Action Cable is a server which can handle multiple connection instances, with one -client-server connection instance established per WebSocket connection. +[Pub/Sub](https://en.wikipedia.org/wiki/Publish%E2%80%93subscribe_pattern), or +Publish-Subscribe, refers to a message queue paradigm whereby senders of +information (publishers), send data to an abstract class of recipients +(subscribers), without specifying individual recipients. Action Cable uses this +approach to communicate between the server and many clients. ## Server-Side Components ### Connections -Connections form the foundation of the client-server relationship. For every WebSocket -the cable server is accepting, a Connection object will be instantiated on the server side. -This instance becomes the parent of all the channel subscriptions that are created from there on. -The Connection itself does not deal with any specific application logic beyond authentication -and authorization. The client of a WebSocket connection is called a consumer. An individual -user will create one consumer-connection pair per browser tab, window, or device they have open. +*Connections* form the foundation of the client-server relationship. For every +WebSocket accepted by the server, a connection object is instantiated. This +object becomes the parent of all the *channel subscriptions* that are created +from there on. The connection itself does not deal with any specific application +logic beyond authentication and authorization. The client of a WebSocket +connection is called the connection *consumer*. An individual user will create +one consumer-connection pair per browser tab, window, or device they have open. -Connections are instantiated via the `ApplicationCable::Connection` class in Ruby. -In this class, you authorize the incoming connection, and proceed to establish it -if the user can be identified. +Connections are instances of `ApplicationCable::Connection`. In this class, you +authorize the incoming connection, and proceed to establish it if the user can +be identified. #### Connection Setup @@ -78,17 +80,17 @@ create a delegate by the same name on any channel instances created off the conn This example relies on the fact that you will already have handled authentication of the user somewhere else in your application, and that a successful authentication sets a signed -cookie with the `user_id`. +cookie with the user ID. The cookie is then automatically sent to the connection instance when a new connection is attempted, and you use that to set the `current_user`. By identifying the connection -by this same current_user, you're also ensuring that you can later retrieve all open +by this same current user, you're also ensuring that you can later retrieve all open connections by a given user (and potentially disconnect them all if the user is deleted -or deauthorized). +or unauthorized). ### Channels -A channel encapsulates a logical unit of work, similar to what a controller does in a +A *channel* encapsulates a logical unit of work, similar to what a controller does in a regular MVC setup. By default, Rails creates a parent `ApplicationCable::Channel` class for encapsulating shared logic between your channels. @@ -103,7 +105,7 @@ end ``` Then you would create your own channel classes. For example, you could have a -**ChatChannel** and an **AppearanceChannel**: +`ChatChannel` and an `AppearanceChannel`: ```ruby # app/channels/chat_channel.rb @@ -119,15 +121,15 @@ A consumer could then be subscribed to either or both of these channels. #### Subscriptions -When a consumer is subscribed to a channel, they act as a subscriber; -This connection is called a subscription. -Incoming messages are then routed to these channel subscriptions based on -an identifier sent by the cable consumer. +Consumers subscribe to channels, acting as *subscribers*. Their connection is +called a *subscription*. Produced messages are then routed to these channel +subscriptions based on an identifier sent by the cable consumer. ```ruby # app/channels/chat_channel.rb class ChatChannel < ApplicationCable::Channel - # Called when the consumer has successfully become a subscriber of this channel + # Called when the consumer has successfully + # become a subscriber of this channel. def subscribed end end @@ -138,30 +140,30 @@ end ### Connections Consumers require an instance of the connection on their side. This can be -established using the following Javascript, which is generated by default in Rails: +established using the following JavaScript, which is generated by default by Rails: #### Connect Consumer -```coffeescript -# app/assets/javascripts/cable.coffee -#= require action_cable +```js +// app/assets/javascripts/cable.js +//= require action_cable +//= require_self +//= require_tree ./channels + +(function() { + this.App || (this.App = {}); -@App = {} -App.cable = ActionCable.createConsumer() + App.cable = ActionCable.createConsumer(); +}).call(this); ``` -This will ready a consumer that'll connect against /cable on your server by default. +This will ready a consumer that'll connect against `/cable` on your server by default. The connection won't be established until you've also specified at least one subscription you're interested in having. #### Subscriber -When a consumer is subscribed to a channel, they act as a subscriber. A -consumer can act as a subscriber to a given channel any number of times. -For example, a consumer could subscribe to multiple chat rooms at the same time. -(remember that a physical user may have multiple consumers, one per tab/device open to your connection). - -A consumer becomes a subscriber, by creating a subscription to a given channel: +A consumer becomes a subscriber by creating a subscription to a given channel: ```coffeescript # app/assets/javascripts/cable/subscriptions/chat.coffee @@ -174,12 +176,20 @@ App.cable.subscriptions.create { channel: "AppearanceChannel" } While this creates the subscription, the functionality needed to respond to received data will be described later on. +A consumer can act as a subscriber to a given channel any number of times. For +example, a consumer could subscribe to multiple chat rooms at the same time: + +```coffeescript +App.cable.subscriptions.create { channel: "ChatChannel", room: "1st Room" } +App.cable.subscriptions.create { channel: "ChatChannel", room: "2nd Room" } +``` + ## Client-Server Interactions ### Streams -Streams provide the mechanism by which channels route published content -(broadcasts) to its subscribers. +*Streams* provide the mechanism by which channels route published content +(broadcasts) to their subscribers. ```ruby # app/channels/chat_channel.rb @@ -203,37 +213,46 @@ class CommentsChannel < ApplicationCable::Channel end ``` -You can then broadcast to this channel using: `CommentsChannel.broadcast_to(@post, @comment)` +You can then broadcast to this channel like this: + +```ruby +CommentsChannel.broadcast_to(@post, @comment) +``` -### Broadcastings +### Broadcasting -A broadcasting is a pub/sub link where anything transmitted by a publisher +A *broadcasting* is a pub/sub link where anything transmitted by a publisher is routed directly to the channel subscribers who are streaming that named broadcasting. Each channel can be streaming zero or more broadcastings. -Broadcastings are purely an online queue and time dependent; -If a consumer is not streaming (subscribed to a given channel), they'll not -get the broadcast should they connect later. + +Broadcastings are purely an online queue and time dependent. If a consumer is +not streaming (subscribed to a given channel), they'll not get the broadcast +should they connect later. Broadcasts are called elsewhere in your Rails application: ```ruby - WebNotificationsChannel.broadcast_to current_user, title: 'New things!', body: 'All the news fit to print' +WebNotificationsChannel.broadcast_to( + current_user, + title: 'New things!', + body: 'All the news fit to print' +) ``` The `WebNotificationsChannel.broadcast_to` call places a message in the current subscription adapter (Redis by default)'s pubsub queue under a separate broadcasting name for each user. For a user with an ID of 1, the broadcasting -name would be `web_notifications_1`. +name would be `web_notifications:1`. The channel has been instructed to stream everything that arrives at -`web_notifications_1` directly to the client by invoking the `#received(data)` +`web_notifications:1` directly to the client by invoking the `received` callback. ### Subscriptions -When a consumer is subscribed to a channel, they act as a subscriber; -This connection is called a subscription. Incoming messages are then routed -to these channel subscriptions based on an identifier sent by the cable consumer. +When a consumer is subscribed to a channel, they act as a subscriber. This +connection is called a subscription. Incoming messages are then routed to +these channel subscriptions based on an identifier sent by the cable consumer. ```coffeescript # app/assets/javascripts/cable/subscriptions/chat.coffee @@ -255,10 +274,10 @@ App.cable.subscriptions.create { channel: "ChatChannel", room: "Best Room" }, """ ``` -### Passing Parameters to Channel +### Passing Parameters to Channels -You can pass parameters from the client-side to the server-side when -creating a subscription. For example: +You can pass parameters from the client side to the server side when creating a +subscription. For example: ```ruby # app/channels/chat_channel.rb @@ -269,8 +288,8 @@ class ChatChannel < ApplicationCable::Channel end ``` -Pass an object as the first argument to `subscriptions.create`, and that object -will become your params hash in your cable channel. The keyword `channel` is required. +An object passed as the first argument to `subscriptions.create` becomes the +params hash in the cable channel. The keyword `channel` is required: ```coffeescript # app/assets/javascripts/cable/subscriptions/chat.coffee @@ -292,14 +311,18 @@ App.cable.subscriptions.create { channel: "ChatChannel", room: "Best Room" }, ``` ```ruby -# Somewhere in your app this is called, perhaps from a NewCommentJob -ChatChannel.broadcast_to "chat_#{room}", sent_by: 'Paul', body: 'This is a cool chat app.' +# Somewhere in your app this is called, perhaps +# from a NewCommentJob. +ActionCable.server.broadcast( + "chat_#{room}", + sent_by: 'Paul', + body: 'This is a cool chat app.' +) ``` +### Rebroadcasting a Message -### Rebroadcasting message - -A common use case is to rebroadcast a message sent by one client to any +A common use case is to *rebroadcast* a message sent by one client to any other connected clients. ```ruby @@ -310,7 +333,7 @@ class ChatChannel < ApplicationCable::Channel end def receive(data) - ChatChannel.broadcast_to "chat_#{params[:room]}", data + ActionCable.server.broadcast("chat_#{params[:room]}", data) end end ``` @@ -328,20 +351,21 @@ The rebroadcast will be received by all connected clients, _including_ the client that sent the message. Note that params are the same as they were when you subscribed to the channel. -## Full-stack examples +## Full-Stack Examples The following setup steps are common to both examples: - 1. [Setup your connection](#connection-setup) - 2. [Setup your parent channel](#parent-channel-setup) - 3. [Connect your consumer](#connect-consumer) + 1. [Setup your connection](#connection-setup). + 2. [Setup your parent channel](#parent-channel-setup). + 3. [Connect your consumer](#connect-consumer). + +### Example 1: User Appearances -### Example 1: User appearances Here's a simple example of a channel that tracks whether a user is online or not and what page they're on. (This is useful for creating presence features like showing a green dot next to a user name if they're online). -#### Create the server-side Appearance Channel: +Create the server-side appearance channel: ```ruby # app/channels/appearance_channel.rb @@ -355,7 +379,7 @@ class AppearanceChannel < ApplicationCable::Channel end def appear(data) - current_user.appear on: data['appearing_on'] + current_user.appear(on: data['appearing_on']) end def away @@ -364,35 +388,34 @@ class AppearanceChannel < ApplicationCable::Channel end ``` -When `#subscribed` callback is invoked by the consumer, a client-side subscription -is initiated. In this case, we take that opportunity to say "the current user has -indeed appeared". That appear/disappear API could be backed by Redis, a database, -or whatever else. +When a subscription is initiated the `subscribed` callback gets fired and we +take that opportunity to say "the current user has indeed appeared". That +appear/disappear API could be backed by Redis, a database, or whatever else. -#### Create the client-side Appearance Channel subscription: +Create the client-side appearance channel subscription: ```coffeescript # app/assets/javascripts/cable/subscriptions/appearance.coffee App.cable.subscriptions.create "AppearanceChannel", - # Called when the subscription is ready for use on the server + # Called when the subscription is ready for use on the server. connected: -> @install() @appear() - # Called when the WebSocket connection is closed + # Called when the WebSocket connection is closed. disconnected: -> @uninstall() - # Called when the subscription is rejected by the server + # Called when the subscription is rejected by the server. rejected: -> @uninstall() appear: -> - # Calls `AppearanceChannel#appear(data)` on the server + # Calls `AppearanceChannel#appear(data)` on the server. @perform("appear", appearing_on: $("main").data("appearing-on")) away: -> - # Calls `AppearanceChannel#away` on the server + # Calls `AppearanceChannel#away` on the server. @perform("away") @@ -414,13 +437,33 @@ App.cable.subscriptions.create "AppearanceChannel", ``` ##### Client-Server Interaction -1. **Client** establishes a connection with the **Server** via `App.cable = ActionCable.createConsumer("ws://cable.example.com")`. [*` cable.coffee`*] The **Server** identified this connection instance by `current_user`. -2. **Client** initiates a subscription to the `Appearance Channel` for their connection via `App.cable.subscriptions.create "AppearanceChannel"`. [*`appearance.coffee`*] -3. **Server** recognizes a new subscription has been initiated for `AppearanceChannel` channel performs the `subscribed` callback, which calls the `appear` method on the `current_user`. [*`appearance_channel.rb`*] -4. **Client** recognizes that a subscription has been established and calls `connected` [*`appearance.coffee`*] which in turn calls `@install` and `@appear`. `@appear` calls`AppearanceChannel#appear(data)` on the server, and supplies a data hash of `appearing_on: $("main").data("appearing-on")`. This is possible because the server-side channel instance will automatically expose the public methods declared on the class (minus the callbacks), so that these can be reached as remote procedure calls via a subscription's `perform` method. -5. **Server** receives the request for the `appear` action on the `AppearanceChannel` channel for the connection identified by `current_user`. [*`appearance_channel.rb`*] The server retrieves the data with the `appearing_on` key from the data hash and sets it as the value for the `on:` key being passed to `current_user.appear`. -### Example 2: Receiving new web notifications +1. **Client** connects to the **Server** via `App.cable = +ActionCable.createConsumer("ws://cable.example.com")`. (`cable.js`). The +**Server** identifies this connection by `current_user`. + +2. **Client** subscribes to the appearance channel via +`App.cable.subscriptions.create(channel: "AppearanceChannel")`. (`appearance.coffee`) + +3. **Server** recognizes a new subscription has been initiated for the +appearance channel and runs its `subscribed` callback, calling the `appear` +method on `current_user`. (`appearance_channel.rb`) + +4. **Client** recognizes that a subscription has been established and calls +`connected` (`appearance.coffee`) which in turn calls `@install` and `@appear`. +`@appear` calls `AppearanceChannel#appear(data)` on the server, and supplies a +data hash of `{ appearing_on: $("main").data("appearing-on") }`. This is +possible because the server-side channel instance automatically exposes all +public methods declared on the class (minus the callbacks), so that these can be +reached as remote procedure calls via a subscription's `perform` method. + +5. **Server** receives the request for the `appear` action on the appearance +channel for the connection identified by `current_user` +(`appearance_channel.rb`). **Server** retrieves the data with the +`:appearing_on` key from the data hash and sets it as the value for the `:on` +key being passed to `current_user.appear`. + +### Example 2: Receiving New Web Notifications The appearance example was all about exposing server functionality to client-side invocation over the WebSocket connection. But the great thing @@ -430,7 +473,7 @@ where the server invokes an action on the client. This is a web notification channel that allows you to trigger client-side web notifications when you broadcast to the right streams: -#### Create the server-side Web Notifications Channel: +Create the server-side web notifications channel: ```ruby # app/channels/web_notifications_channel.rb @@ -441,36 +484,43 @@ class WebNotificationsChannel < ApplicationCable::Channel end ``` -#### Create the client-side Web Notifications Channel subscription: +Create the client-side web notifications channel subscription: + ```coffeescript # app/assets/javascripts/cable/subscriptions/web_notifications.coffee -# Client-side which assumes you've already requested the right to send web notifications +# Client-side which assumes you've already requested +# the right to send web notifications. App.cable.subscriptions.create "WebNotificationsChannel", received: (data) -> new Notification data["title"], body: data["body"] ``` -#### Broadcast content to a Web Notification Channel instance from elsewhere in your application +Broadcast content to a web notification channel instance from elsewhere in your +application: ```ruby # Somewhere in your app this is called, perhaps from a NewCommentJob - WebNotificationsChannel.broadcast_to current_user, title: 'New things!', body: 'All the news fit to print' +WebNotificationsChannel.broadcast_to( + current_user, + title: 'New things!', + body: 'All the news fit to print' +) ``` The `WebNotificationsChannel.broadcast_to` call places a message in the current -subscription adapter (Redis by default)'s pubsub queue under a separate -broadcasting name for each user. For a user with an ID of 1, the broadcasting -name would be `web_notifications_1`. +subscription adapter's pubsub queue under a separate broadcasting name for each +user. For a user with an ID of 1, the broadcasting name would be +`web_notifications:1`. The channel has been instructed to stream everything that arrives at -`web_notifications_1` directly to the client by invoking the `#received(data)` -callback. The data is the hash sent as the second parameter to the server-side -broadcast call, JSON encoded for the trip across the wire, and unpacked for -the data argument arriving to `#received`. +`web_notifications:1` directly to the client by invoking the `received` +callback. The data passed as argument is the hash sent as the second parameter +to the server-side broadcast call, JSON encoded for the trip across the wire, +and unpacked for the data argument arriving to `received`. -### More complete examples +### More Complete Examples -See the [rails/actioncable-examples](http://github.com/rails/actioncable-examples) +See the [rails/actioncable-examples](https://github.com/rails/actioncable-examples) repository for a full example of how to setup Action Cable in a Rails app and adding channels. ## Configuration @@ -479,26 +529,20 @@ Action Cable has two required configurations: a subscription adapter and allowed ### Subscription Adapter -By default, `ActionCable::Server::Base` will look for a configuration file -in `Rails.root.join('config/cable.yml')`. The file must specify an adapter -and a URL for each Rails environment. See the "Dependencies" section for -additional information on adapters. +By default, Action Cable looks for a configuration file in `config/cable.yml`. +The file must specify an adapter and a URL for each Rails environment. See the +[Dependencies](#dependencies) section for additional information on adapters. ```yaml -production: &production - adapter: redis - url: redis://10.10.3.153:6381 -development: &development +development: adapter: async -test: *development -``` -This format allows you to specify one configuration per Rails environment. -You can also change the location of the Action Cable config file in -a Rails initializer with something like: +test: + adapter: async -```ruby -Rails.application.paths.add "config/redis/cable", with: "somewhere/else/cable.yml" +production: + adapter: redis + url: redis://10.10.3.153:6381 ``` ### Allowed Request Origins @@ -508,44 +552,47 @@ passed to the server config as an array. The origins can be instances of strings or regular expressions, against which a check for match will be performed. ```ruby -Rails.application.config.action_cable.allowed_request_origins = ['http://rubyonrails.com', /http:\/\/ruby.*/] +config.action_cable.allowed_request_origins = ['http://rubyonrails.com', %r{http://ruby.*}] ``` To disable and allow requests from any origin: ```ruby -Rails.application.config.action_cable.disable_request_forgery_protection = true +config.action_cable.disable_request_forgery_protection = true ``` By default, Action Cable allows all requests from localhost:3000 when running in the development environment. - ### Consumer Configuration -To configure the URL, add a call to `action_cable_meta_tag` in your HTML layout HEAD. -This uses a url or path typically set via `config.action_cable.url` in the environment configuration files. +To configure the URL, add a call to `action_cable_meta_tag` in your HTML layout +HEAD. This uses a URL or path typically set via `config.action_cable.url` in the +environment configuration files. ### Other Configurations -The other common option to configure is the log tags applied to the per-connection logger. Here's close to what we're using in Basecamp: +The other common option to configure, is the log tags applied to the +per-connection logger. Here's an example that uses +the user account id if available, else "no-account" while tagging: ```ruby -Rails.application.config.action_cable.log_tags = [ - -> request { request.env['bc.account_id'] || "no-account" }, +config.action_cable.log_tags = [ + -> request { request.env['user_account_id'] || "no-account" }, :action_cable, -> request { request.uuid } ] ``` -For a full list of all configuration options, see the `ActionCable::Server::Configuration` class. +For a full list of all configuration options, see the +`ActionCable::Server::Configuration` class. -Also note that your server must provide at least the same number of -database connections as you have workers. The default worker pool is -set to 100, so that means you have to make at least that available. -You can change that in `config/database.yml` through the `pool` attribute. +Also note that your server must provide at least the same number of database +connections as you have workers. The default worker pool size is set to 4, so +that means you have to make at least that available. You can change that in +`config/database.yml` through the `pool` attribute. -## Running standalone cable servers +## Running Standalone Cable Servers ### In App @@ -560,30 +607,30 @@ class Application < Rails::Application end ``` -You can use `App.cable = ActionCable.createConsumer()` to connect to the -cable server if `action_cable_meta_tag` is included in the layout. A custom -path is specified as first argument to `createConsumer` -(e.g. `App.cable = ActionCable.createConsumer("/websocket")`). +You can use `App.cable = ActionCable.createConsumer()` to connect to the cable +server if `action_cable_meta_tag` is invoked in the layout. A custom path is +specified as first argument to `createConsumer` (e.g. `App.cable = +ActionCable.createConsumer("/websocket")`). -For every instance of your server you create and for every worker -your server spawns, you will also have a new instance of ActionCable, -but the use of Redis keeps messages synced across connections. +For every instance of your server you create and for every worker your server +spawns, you will also have a new instance of Action Cable, but the use of Redis +keeps messages synced across connections. ### Standalone -The cable servers can be separated from your normal application server. -It's still a Rack application, but it is its own Rack application. -The recommended basic setup is as follows: +The cable servers can be separated from your normal application server. It's +still a Rack application, but it is its own Rack application. The recommended +basic setup is as follows: ```ruby # cable/config.ru -require ::File.expand_path('../../config/environment', __FILE__) +require_relative '../config/environment' Rails.application.eager_load! run ActionCable.server ``` -Then you start the server using a binstub in bin/cable ala: +Then you start the server using a binstub in `bin/cable` ala: ``` #!/bin/bash @@ -619,4 +666,5 @@ The Action Cable server implements the Rack socket hijacking API, thereby allowing the use of a multithreaded pattern for managing connections internally, irrespective of whether the application server is multi-threaded or not. -Accordingly, Action Cable works with all the popular application servers -- Unicorn, Puma and Passenger. +Accordingly, Action Cable works with popular servers like Unicorn, Puma, and +Passenger. diff --git a/guides/source/action_controller_overview.md b/guides/source/action_controller_overview.md index 848c9caa59..7b1138c7d4 100644 --- a/guides/source/action_controller_overview.md +++ b/guides/source/action_controller_overview.md @@ -21,7 +21,7 @@ After reading this guide, you will know: What Does a Controller Do? -------------------------- -Action Controller is the C in MVC. After routing has determined which controller to use for a request, the controller is responsible for making sense of the request and producing the appropriate output. Luckily, Action Controller does most of the groundwork for you and uses smart conventions to make this as straightforward as possible. +Action Controller is the C in MVC. After the router has determined which controller to use for a request, the controller is responsible for making sense of the request and producing the appropriate output. Luckily, Action Controller does most of the groundwork for you and uses smart conventions to make this as straightforward as possible. For most conventional [RESTful](http://en.wikipedia.org/wiki/Representational_state_transfer) applications, the controller will receive the request (this is invisible to you as the developer), fetch or save data from a model and use a view to create HTML output. If your controller needs to do things a little differently, that's not a problem, this is just the most common way for a controller to work. @@ -145,7 +145,7 @@ So for example, if you are sending this JSON content: Your controller will receive `params[:company]` as `{ "name" => "acme", "address" => "123 Carrot Street" }`. -Also, if you've turned on `config.wrap_parameters` in your initializer or called `wrap_parameters` in your controller, you can safely omit the root element in the JSON parameter. In this case, the parameters will be cloned and wrapped with a key chosen based on your controller's name. So the above JSON POST can be written as: +Also, if you've turned on `config.wrap_parameters` in your initializer or called `wrap_parameters` in your controller, you can safely omit the root element in the JSON parameter. In this case, the parameters will be cloned and wrapped with a key chosen based on your controller's name. So the above JSON request can be written as: ```json { "name": "acme", "address": "123 Carrot Street" } @@ -199,11 +199,12 @@ practice to help prevent accidentally allowing users to update sensitive model attributes. In addition, parameters can be marked as required and will flow through a -predefined raise/rescue flow to end up as a 400 Bad Request. +predefined raise/rescue flow that will result in a 400 Bad Request being +returned if not all required parameters are passed in. ```ruby class PeopleController < ActionController::Base - # This will raise an ActiveModel::ForbiddenAttributes exception + # This will raise an ActiveModel::ForbiddenAttributesError exception # because it's using mass assignment without an explicit permit # step. def create @@ -213,8 +214,8 @@ class PeopleController < ActionController::Base # This will pass with flying colors as long as there's a person key # in the parameters, otherwise it'll raise a # ActionController::ParameterMissing exception, which will get - # caught by ActionController::Base and turned into that 400 Bad - # Request reply. + # caught by ActionController::Base and turned into a 400 Bad + # Request error. def update person = current_account.people.find(params[:id]) person.update!(person_params) @@ -361,7 +362,7 @@ If your user sessions don't store critical data or don't need to be around for l 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: +If you need a different session storage mechanism, you can change it in an initializer: ```ruby # Use the database for sessions instead of the cookie-based default, @@ -370,7 +371,7 @@ If you need a different session storage mechanism, you can change it in the `con # Rails.application.config.session_store :active_record_store ``` -Rails sets up a session key (the name of the cookie) when signing the session data. These can also be changed in `config/initializers/session_store.rb`: +Rails sets up a session key (the name of the cookie) when signing the session data. These can also be changed in an initializer: ```ruby # Be sure to restart your server when you modify this file. @@ -814,7 +815,7 @@ In every controller there are two accessor methods pointing to the request and t ### The `request` Object -The request object contains a lot of useful information about the request coming in from the client. To get a full list of the available methods, refer to the [API documentation](http://api.rubyonrails.org/classes/ActionDispatch/Request.html). Among the properties that you can access on this object are: +The request object contains a lot of useful information about the request coming in from the client. To get a full list of the available methods, refer to the [Rails API documentation](http://api.rubyonrails.org/classes/ActionDispatch/Request.html) and [Rack Documentation](http://www.rubydoc.info/github/rack/rack/Rack/Request). Among the properties that you can access on this object are: | Property of `request` | Purpose | | ----------------------------------------- | -------------------------------------------------------------------------------- | @@ -836,7 +837,7 @@ Rails collects all of the parameters sent along with the request in the `params` ### The `response` Object -The response object is not usually used directly, but is built up during the execution of the action and rendering of the data that is being sent back to the user, but sometimes - like in an after filter - it can be useful to access the response directly. Some of these accessor methods also have setters, allowing you to change their values. +The response object is not usually used directly, but is built up during the execution of the action and rendering of the data that is being sent back to the user, but sometimes - like in an after filter - it can be useful to access the response directly. Some of these accessor methods also have setters, allowing you to change their values. To get a full list of the available methods, refer to the [Rails API documentation](http://api.rubyonrails.org/classes/ActionDispatch/Response.html) and [Rack Documentation](http://www.rubydoc.info/github/rack/rack/Rack/Response). | Property of `response` | Purpose | | ---------------------- | --------------------------------------------------------------------------------------------------- | diff --git a/guides/source/action_mailer_basics.md b/guides/source/action_mailer_basics.md index 5346b7c32b..34847832fd 100644 --- a/guides/source/action_mailer_basics.md +++ b/guides/source/action_mailer_basics.md @@ -734,8 +734,8 @@ files (environment.rb, production.rb, etc...) | Configuration | Description | |---------------|-------------| |`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` (will send the password in the clear), `:login` (will send password Base64 encoded) or `:cram_md5` (combines a Challenge/Response mechanism to exchange information and a cryptographic Message Digest 5 algorithm to hash important information)</li><li>`:enable_starttls_auto` - Detects if STARTTLS is enabled in your SMTP server and starts to use it. Defaults to `true`.</li><li>`:openssl_verify_mode` - When using TLS, you can set how OpenSSL checks the certificate. This is really useful if you need to validate a self-signed and/or a wildcard certificate. You can use the name of an OpenSSL verify constant ('none', 'peer', 'client_once', 'fail_if_no_peer_cert') or directly the constant (`OpenSSL::SSL::VERIFY_NONE`, `OpenSSL::SSL::VERIFY_PEER`, ...).</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>| +|`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` (will send the password in the clear), `:login` (will send password Base64 encoded) or `:cram_md5` (combines a Challenge/Response mechanism to exchange information and a cryptographic Message Digest 5 algorithm to hash important information)</li><li>`:enable_starttls_auto` - Detects if STARTTLS is enabled in your SMTP server and starts to use it. Defaults to `true`.</li><li>`:openssl_verify_mode` - When using TLS, you can set how OpenSSL checks the certificate. This is really useful if you need to validate a self-signed and/or a wildcard certificate. You can use the name of an OpenSSL verify constant ('none' or 'peer') or directly the constant (`OpenSSL::SSL::VERIFY_NONE` or `OpenSSL::SSL::VERIFY_PEER`).</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`.</li></ul>| |`raise_delivery_errors`|Whether or not errors should be raised if the email fails to be delivered. This only works if the external email server is configured for immediate delivery.| |`delivery_method`|Defines a delivery method. Possible values are:<ul><li>`:smtp` (default), can be configured by using `config.action_mailer.smtp_settings`.</li><li>`:sendmail`, can be configured by using `config.action_mailer.sendmail_settings`.</li><li>`:file`: save emails to files; can be configured by using `config.action_mailer.file_settings`.</li><li>`:test`: save emails to `ActionMailer::Base.deliveries` array.</li></ul>See [API docs](http://api.rubyonrails.org/classes/ActionMailer/Base.html) for more info.| |`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.| @@ -756,7 +756,7 @@ config.action_mailer.delivery_method = :sendmail # Defaults to: # config.action_mailer.sendmail_settings = { # location: '/usr/sbin/sendmail', -# arguments: '-i -t' +# arguments: '-i' # } config.action_mailer.perform_deliveries = true config.action_mailer.raise_delivery_errors = true diff --git a/guides/source/action_view_overview.md b/guides/source/action_view_overview.md index 0e6bb76101..ff0127522b 100644 --- a/guides/source/action_view_overview.md +++ b/guides/source/action_view_overview.md @@ -15,7 +15,7 @@ After reading this guide, you will know: What is Action View? -------------------- -In Rails, web requests are handled by [Action Controller](action_controller_overview.html) and Action View. Typically, Action Controller will be concerned with communicating with the database and performing CRUD actions where necessary. Action View is then responsible for compiling the response. +In Rails, web requests are handled by [Action Controller](action_controller_overview.html) and Action View. Typically, Action Controller is concerned with communicating with the database and performing CRUD actions where necessary. Action View is then responsible for compiling the response. Action View templates are written using embedded Ruby in tags mingled with HTML. To avoid cluttering the templates with boilerplate code, a number of helper classes provide common behavior for forms, dates, and strings. It's also easy to add new helpers to your application as it evolves. @@ -254,12 +254,6 @@ as if we had written: <%= render partial: "product", locals: { product: @product } %> ``` -With the `as` option we can specify a different name for the local variable. For example, if we wanted it to be `item` instead of `product` we would do: - -```erb -<%= render partial: "product", as: "item" %> -``` - The `object` option can be used to directly specify which object is rendered into the partial; useful when the template's object is elsewhere (e.g. in a different instance variable or in a local variable). For example, instead of: @@ -274,12 +268,18 @@ we would do: <%= render partial: "product", object: @item %> ``` -The `object` and `as` options can also be used together: +With the `as` option we can specify a different name for the said local variable. For example, if we wanted it to be `item` instead of `product` we would do: ```erb <%= render partial: "product", object: @item, as: "item" %> ``` +This is equivalent to + +```erb +<%= render partial: "product", locals: { item: @item } %> +``` + #### Rendering Collections It is very common that a template will need to iterate over a collection and render a sub-template for each of the elements. This pattern has been implemented as a single method that accepts an array and renders a partial for each one of the elements in the array. @@ -1439,7 +1439,7 @@ Formats a number with the specified level of `precision`, which defaults to 3. ```ruby number_with_precision(111.2345) # => 111.235 -number_with_precision(111.2345, 2) # => 111.23 +number_with_precision(111.2345, precision: 2) # => 111.23 ``` ### SanitizeHelper diff --git a/guides/source/active_job_basics.md b/guides/source/active_job_basics.md index d6de92ace6..c65d1e6de5 100644 --- a/guides/source/active_job_basics.md +++ b/guides/source/active_job_basics.md @@ -34,8 +34,9 @@ Delayed Job and Resque. Picking your queuing backend becomes more of an operatio concern, then. And you'll be able to switch between them without having to rewrite your jobs. -NOTE: Rails by default comes with an "immediate runner" queuing implementation. -That means that each job that has been enqueued will run immediately. +NOTE: Rails by default comes with an asynchronous queuing implementation that +runs jobs with an in-process thread pool. Jobs will run asynchronously, but any +jobs in the queue will be dropped upon restart. Creating a Job @@ -62,12 +63,12 @@ $ bin/rails generate job guests_cleanup --queue urgent ``` If you don't want to use a generator, you could create your own file inside of -`app/jobs`, just make sure that it inherits from `ActiveJob::Base`. +`app/jobs`, just make sure that it inherits from `ApplicationJob`. Here's what a job looks like: ```ruby -class GuestsCleanupJob < ActiveJob::Base +class GuestsCleanupJob < ApplicationJob queue_as :default def perform(*guests) @@ -109,7 +110,7 @@ That's it! Job Execution ------------- -For enqueuing and executing jobs in production you need to set up a queuing backend, +For enqueuing and executing jobs in production you need to set up a queuing backend, that is to say you need to decide for a 3rd-party queuing library that Rails should use. Rails itself only provides an in-process queuing system, which only keeps the jobs in RAM. If the process crashes or the machine is reset, then all outstanding jobs are lost with the @@ -141,7 +142,7 @@ end You can also configure your backend on a per job basis. ```ruby -class GuestsCleanupJob < ActiveJob::Base +class GuestsCleanupJob < ApplicationJob self.queue_adapter = :resque #.... end @@ -171,7 +172,7 @@ Most of the adapters support multiple queues. With Active Job you can schedule the job to run on a specific queue: ```ruby -class GuestsCleanupJob < ActiveJob::Base +class GuestsCleanupJob < ApplicationJob queue_as :low_priority #.... end @@ -189,7 +190,7 @@ module YourApp end # app/jobs/guests_cleanup_job.rb -class GuestsCleanupJob < ActiveJob::Base +class GuestsCleanupJob < ApplicationJob queue_as :low_priority #.... end @@ -212,7 +213,7 @@ module YourApp end # app/jobs/guests_cleanup_job.rb -class GuestsCleanupJob < ActiveJob::Base +class GuestsCleanupJob < ApplicationJob queue_as :low_priority #.... end @@ -234,7 +235,7 @@ block will be executed in the job context (so you can access `self.arguments`) and you must return the queue name: ```ruby -class ProcessVideoJob < ActiveJob::Base +class ProcessVideoJob < ApplicationJob queue_as do video = self.arguments.first if video.owner.premium? @@ -274,7 +275,7 @@ trigger logic during the life cycle of a job. ### Usage ```ruby -class GuestsCleanupJob < ActiveJob::Base +class GuestsCleanupJob < ApplicationJob queue_as :default before_enqueue do |job| @@ -331,7 +332,7 @@ Active Record objects to your job instead of class/id pairs, which you then have to manually deserialize. Before, jobs would look like this: ```ruby -class TrashableCleanupJob < ActiveJob::Base +class TrashableCleanupJob < ApplicationJob def perform(trashable_class, trashable_id, depth) trashable = trashable_class.constantize.find(trashable_id) trashable.cleanup(depth) @@ -342,7 +343,7 @@ end Now you can simply do: ```ruby -class TrashableCleanupJob < ActiveJob::Base +class TrashableCleanupJob < ApplicationJob def perform(trashable, depth) trashable.cleanup(depth) end @@ -360,7 +361,7 @@ Active Job provides a way to catch exceptions raised during the execution of the job: ```ruby -class GuestsCleanupJob < ActiveJob::Base +class GuestsCleanupJob < ApplicationJob queue_as :default rescue_from(ActiveRecord::RecordNotFound) do |exception| diff --git a/guides/source/active_model_basics.md b/guides/source/active_model_basics.md index e834aeadb1..732e553c62 100644 --- a/guides/source/active_model_basics.md +++ b/guides/source/active_model_basics.md @@ -416,7 +416,6 @@ the Active Model API. ```ruby class Person include ActiveModel::Model - end ``` @@ -467,7 +466,7 @@ In order to make this work, the model must have an accessor named `password_dige The `has_secure_password` will add the following validations on the `password` accessor: 1. Password should be present. -2. Password should be equal to its confirmation. +2. Password should be equal to its confirmation (provided +password_confirmation+ is passed along). 3. The maximum length of a password is 72 (required by `bcrypt` on which ActiveModel::SecurePassword depends) #### Examples @@ -493,6 +492,10 @@ person.valid? # => false person.password = person.password_confirmation = 'a' * 100 person.valid? # => false +# When only password is supplied with no password_confirmation. +person.password = 'aditya' +person.valid? # => true + # When all validations are passed. person.password = person.password_confirmation = 'aditya' person.valid? # => true diff --git a/guides/source/active_record_basics.md b/guides/source/active_record_basics.md index d9e9466a33..6b3aa471f9 100644 --- a/guides/source/active_record_basics.md +++ b/guides/source/active_record_basics.md @@ -104,7 +104,7 @@ depending on the purpose of these columns. your models. * **Primary keys** - By default, Active Record will use an integer column named `id` as the table's primary key. When using [Active Record - Migrations](migrations.html) to create your tables, this column will be + Migrations](active_record_migrations.html) to create your tables, this column will be automatically created. There are also some optional column names that will add additional features @@ -374,4 +374,4 @@ and to roll it back, `rails db:rollback`. Note that the above code is database-agnostic: it will run in MySQL, PostgreSQL, Oracle and others. You can learn more about migrations in the -[Active Record Migrations guide](migrations.html). +[Active Record Migrations guide](active_record_migrations.html). diff --git a/guides/source/active_record_callbacks.md b/guides/source/active_record_callbacks.md index fb5d2065d3..2a1c960887 100644 --- a/guides/source/active_record_callbacks.md +++ b/guides/source/active_record_callbacks.md @@ -399,7 +399,7 @@ By using the `after_commit` callback we can account for this case. ```ruby class PictureFile < ApplicationRecord - after_commit :delete_picture_file_from_disk, on: [:destroy] + after_commit :delete_picture_file_from_disk, on: :destroy def delete_picture_file_from_disk if File.exist?(filepath) @@ -409,7 +409,7 @@ class PictureFile < ApplicationRecord end ``` -NOTE: the `:on` option specifies when a callback will be fired. If you +NOTE: The `:on` option specifies when a callback will be fired. If you don't supply the `:on` option the callback will fire for every action. Since using `after_commit` callback only on create, update or delete is @@ -431,4 +431,4 @@ class PictureFile < ApplicationRecord end ``` -WARNING. 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. +WARNING. The `after_commit` and `after_rollback` callbacks are called for all models created, updated, or destroyed within a transaction block. However, if an exception is raised within one of these callbacks, the exception will bubble up and any remaining `after_commit` or `after_rollback` methods will _not_ be executed. As such, if your callback code could raise an exception, you'll need to rescue it and handle it within the callback in order to allow other callbacks to run. diff --git a/guides/source/active_record_migrations.md b/guides/source/active_record_migrations.md index f914122242..a45becf670 100644 --- a/guides/source/active_record_migrations.md +++ b/guides/source/active_record_migrations.md @@ -241,7 +241,7 @@ generates ```ruby class AddUserRefToProducts < ActiveRecord::Migration[5.0] def change - add_reference :products, :user, index: true, foreign_key: true + add_reference :products, :user, foreign_key: true end end ``` @@ -313,7 +313,7 @@ will produce a migration that looks like this class AddDetailsToProducts < ActiveRecord::Migration[5.0] def change add_column :products, :price, :decimal, precision: 5, scale: 2 - add_reference :products, :supplier, polymorphic: true, index: true + add_reference :products, :supplier, polymorphic: true end end ``` diff --git a/guides/source/active_record_postgresql.md b/guides/source/active_record_postgresql.md index 5eb19f5214..d7e35490ef 100644 --- a/guides/source/active_record_postgresql.md +++ b/guides/source/active_record_postgresql.md @@ -435,7 +435,7 @@ create_table :documents do |t| t.string 'body' end -execute "CREATE INDEX documents_idx ON documents USING gin(to_tsvector('english', title || ' ' || body));" +add_index :documents, "to_tsvector('english', title || ' ' || body)", using: :gin, name: 'documents_idx' # app/models/document.rb class Document < ApplicationRecord @@ -503,9 +503,9 @@ second = Article.create! title: "Brace yourself", status: "draft", published_at: 1.month.ago -Article.count # => 1 -first.archive! Article.count # => 2 +first.archive! +Article.count # => 1 ``` NOTE: This application only cares about non-archived `Articles`. A view also diff --git a/guides/source/active_record_querying.md b/guides/source/active_record_querying.md index 9a13e3bda7..38b1ffc4c8 100644 --- a/guides/source/active_record_querying.md +++ b/guides/source/active_record_querying.md @@ -50,7 +50,7 @@ class Role < ApplicationRecord end ``` -Active Record will perform queries on the database for you and is compatible with most database systems, including MySQL, MariaDB, PostgreSQL and SQLite. Regardless of which database system you're using, the Active Record method format will always be the same. +Active Record will perform queries on the database for you and is compatible with most database systems, including MySQL, MariaDB, PostgreSQL, and SQLite. Regardless of which database system you're using, the Active Record method format will always be the same. Retrieving Objects from the Database ------------------------------------ @@ -81,10 +81,9 @@ The methods are: * `reorder` * `reverse_order` * `select` -* `distinct` * `where` -All of the above methods return an instance of `ActiveRecord::Relation`. +Finder methods that return a collection, such as `where` and `group`, return an instance of `ActiveRecord::Relation`. Methods that find a single entity, such as `find` and `first`, return a single instance of the model. The primary operation of `Model.find(options)` can be summarized as: @@ -204,7 +203,7 @@ The SQL equivalent of the above is: SELECT * FROM clients ORDER BY clients.id ASC LIMIT 3 ``` -On a collection that is ordered using `order`, `first` will return the first record ordered by the specified attribute for `order`. +On a collection that is ordered using `order`, `first` will return the first record ordered by the specified attribute for `order`. ```ruby client = Client.order(:first_name).first @@ -255,7 +254,7 @@ The SQL equivalent of the above is: SELECT * FROM clients ORDER BY clients.id DESC LIMIT 3 ``` -On a collection that is ordered using `order`, `last` will return the last record ordered by the specified attribute for `order`. +On a collection that is ordered using `order`, `last` will return the last record ordered by the specified attribute for `order`. ```ruby client = Client.order(:first_name).last @@ -314,7 +313,7 @@ We often need to iterate over a large set of records, as when we send a newslett This may appear straightforward: ```ruby -# This is very inefficient when the users table has thousands of rows. +# This may consume too much memory if the table is big. User.all.each do |user| NewsMailer.weekly(user).deliver_now end @@ -328,7 +327,7 @@ TIP: The `find_each` and `find_in_batches` methods are intended for use in the b #### `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: +The `find_each` method retrieves records in batches and then yields _each_ one to the block. In the following example, `find_each` retrieves users in batches of 1000 and yields them to the block one by one: ```ruby User.find_each do |user| @@ -336,7 +335,9 @@ User.find_each do |user| end ``` -To add conditions to a `find_each` operation you can chain other Active Record methods such as `where`: +This process is repeated, fetching more batches as needed, until all of the records have been processed. + +`find_each` works on model classes, as seen above, and also on relations: ```ruby User.where(weekly_subscriber: true).find_each do |user| @@ -344,11 +345,16 @@ User.where(weekly_subscriber: true).find_each do |user| end ``` -##### Options for `find_each` +as long as they have no ordering, since the method needs to force an order +internally to iterate. -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`. +If an order is present in the receiver the behaviour depends on the flag +`config.active_record.error_on_ignored_order`. If true, `ArgumentError` is +raised, otherwise the order is ignored and a warning issued, which is the +default. This can be overridden with the option `:error_on_ignore`, explained +below. -Three additional options, `:batch_size`, `:start` and `:finish`, are available as well. +##### Options for `find_each` **`:batch_size`** @@ -364,10 +370,10 @@ end 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. -For example, to send newsletters only to users with the primary key starting from 2000, and to retrieve them in batches of 5000: +For example, to send newsletters only to users with the primary key starting from 2000: ```ruby -User.find_each(start: 2000, batch_size: 5000) do |user| +User.find_each(start: 2000) do |user| NewsMailer.weekly(user).deliver_now end ``` @@ -375,12 +381,12 @@ end **`:finish`** Similar to the `:start` option, `:finish` allows you to configure the last ID of the sequence whenever the highest ID is not the one you need. -This would be useful, for example, if you wanted to run a batch process, using a subset of records based on `:start` and `:finish` +This would be useful, for example, if you wanted to run a batch process using a subset of records based on `:start` and `:finish`. -For example, to send newsletters only to users with the primary key starting from 2000 up to 10000 and to retrieve them in batches of 5000: +For example, to send newsletters only to users with the primary key starting from 2000 up to 10000: ```ruby -User.find_each(start: 2000, finish: 10000, batch_size: 5000) do |user| +User.find_each(start: 2000, finish: 10000) do |user| NewsMailer.weekly(user).deliver_now end ``` @@ -389,20 +395,36 @@ 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 `:start` and `:finish` options on each worker. +**`:error_on_ignore`** + +Overrides the application config to specify if an error should be raised when an +order is present in the relation. + #### `find_in_batches` 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 -# Give add_invoices an array of 1000 invoices at a time +# Give add_invoices an array of 1000 invoices at a time. Invoice.find_in_batches do |invoices| export.add_invoices(invoices) end ``` +`find_in_batches` works on model classes, as seen above, and also on relations: + +```ruby +Invoice.pending.find_in_batches do |invoice| + pending_invoices_export.add_invoices(invoices) +end +``` + +as long as they have no ordering, since the method needs to force an order +internally to iterate. + ##### Options for `find_in_batches` -The `find_in_batches` method accepts the same `:batch_size`, `:start` and `:finish` options as `find_each`. +The `find_in_batches` method accepts the same options as `find_each`. Conditions ---------- @@ -578,6 +600,7 @@ If you want to call `order` multiple times, subsequent orders will be appended t Client.order("orders_count ASC").order("created_at DESC") # SELECT * FROM clients ORDER BY orders_count ASC, created_at DESC ``` +WARNING: If you are using **MySQL 5.7.5** and above, then on selecting fields from a result set using methods like `select`, `pluck` and `ids`; the `order` method will raise an `ActiveRecord::StatementInvalid` exception unless the field(s) used in `order` clause are included in the select list. See the next section for selecting fields from the result set. Selecting Specific Fields ------------------------- @@ -990,13 +1013,13 @@ There are multiple ways to use the `joins` method. You can just supply the raw SQL specifying the `JOIN` clause to `joins`: ```ruby -Author.joins("INNER JOIN posts ON posts.author_id = author.id AND posts.published = 't'") +Author.joins("INNER JOIN posts ON posts.author_id = authors.id AND posts.published = 't'") ``` This will result in the following SQL: ```sql -SELECT clients.* FROM clients INNER JOIN posts ON posts.author_id = author.id AND posts.published = 't' +SELECT authors.* FROM authors INNER JOIN posts ON posts.author_id = authors.id AND posts.published = 't' ``` #### Using Array/Hash of Named Associations @@ -1121,7 +1144,7 @@ If you want to select a set of records whether or not they have associated records you can use the `left_outer_joins` method. ```ruby -Author.left_outer_joins(:posts).uniq.select('authors.*, COUNT(posts.*) AS posts_count').group('authors.id') +Author.left_outer_joins(:posts).distinct.select('authors.*, COUNT(posts.*) AS posts_count').group('authors.id') ``` Which produces: @@ -1227,7 +1250,8 @@ articles, all the articles would still be loaded. By using `joins` (an INNER JOIN), the join conditions **must** match, otherwise no records will be returned. - +NOTE: If an association is eager loaded as part of a join, any fields from a custom select clause will not present be on the loaded models. +This is because it is ambiguous whether they should appear on the parent record, or the child. Scopes ------ diff --git a/guides/source/active_record_validations.md b/guides/source/active_record_validations.md index 1cf4abce10..665e97c470 100644 --- a/guides/source/active_record_validations.md +++ b/guides/source/active_record_validations.md @@ -278,12 +278,6 @@ form was submitted. This is typically used when the user needs to agree to your application's terms of service, confirm that some text is read, 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. If -the field does exist in your database, the `accept` option must be set to -`true` or else the validation will not run. - ```ruby class Person < ApplicationRecord validates :terms_of_service, acceptance: true @@ -292,16 +286,31 @@ end This check is performed only if `terms_of_service` is not `nil`. The default error message for this helper is _"must be accepted"_. +You can also pass custom message via the `message` option. + +```ruby +class Person < ApplicationRecord + validates :terms_of_service, acceptance: { message: 'must be abided' } +end +``` -It can receive an `:accept` option, which determines the value that will be -considered acceptance. It defaults to "1" and can be easily changed. +It can also receive an `:accept` option, which determines the allowed values +that will be considered as accepted. It defaults to `['1', true]` and can be +easily changed. ```ruby class Person < ApplicationRecord validates :terms_of_service, acceptance: { accept: 'yes' } + validates :eula, acceptance: { accept: ['TRUE', 'accepted'] } end ``` +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. If +the field does exist in your database, the `accept` option must be set to +or include `true` or else the validation will not run. + ### `validates_associated` You should use this helper when your model has associations with other models @@ -383,7 +392,8 @@ 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. +attribute's value. For full options to the message argument please see the +[message documentation](#message). The default error message is _"is reserved"_. @@ -418,7 +428,8 @@ end 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. +`:message` option to show how you can include the attribute's value. For full +options please see the [message documentation](#message). The default error message for this helper is _"is not included in the list"_. @@ -759,6 +770,9 @@ class Coffee < ApplicationRecord end ``` +For full options to the message argument please see the +[message documentation](#message). + ### `:allow_blank` The `:allow_blank` option is similar to the `:allow_nil` option. This option @@ -783,7 +797,8 @@ for each validation helper. The `:message` option accepts a `String` or `Proc`. A `String` `:message` value can optionally contain any/all of `%{value}`, `%{attribute}`, and `%{model}` which will be dynamically replaced when -validation fails. +validation fails. This replacement is done using the I18n gem, and the +placeholders must match exactly, no spaces are allowed. A `Proc` `:message` value is given two arguments: the object being validated, and a hash with `:model`, `:attribute`, and `:value` key-value pairs. diff --git a/guides/source/active_support_core_extensions.md b/guides/source/active_support_core_extensions.md index d7f9201b26..60a6c37f82 100644 --- a/guides/source/active_support_core_extensions.md +++ b/guides/source/active_support_core_extensions.md @@ -252,7 +252,7 @@ Note that `try` will swallow no-method errors, returning nil instead. If you wan ```ruby @number.try(:nest) # => nil -@number.try!(:nest) # NoMethodError: undefined method `nest' for 1:Fixnum +@number.try!(:nest) # NoMethodError: undefined method `nest' for 1:Integer ``` NOTE: Defined in `active_support/core_ext/object/try.rb`. @@ -368,7 +368,7 @@ account.to_query('company[name]') so its output is ready to be used in a query string. -Arrays return the result of applying `to_query` to each element with `_key_[]` as key, and join the result with "&": +Arrays return the result of applying `to_query` to each element with `key[]` as key, and join the result with "&": ```ruby [3.4, -45.6].to_query('sample') @@ -707,64 +707,6 @@ M.parents # => [X::Y, X, Object] NOTE: Defined in `active_support/core_ext/module/introspection.rb`. -#### 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 -``` - -Arguments may be bare constant names: - -```ruby -Math.qualified_const_get("E") # => 2.718281828459045 -``` - -These methods are analogous to their built-in counterparts. In particular, -`qualified_constant_defined?` accepts an optional second argument 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 -``` - -`qualified_const_defined?` behaves this way: - -```ruby -N.qualified_const_defined?("C::X", false) # => false -N.qualified_const_defined?("C::X", true) # => true -N.qualified_const_defined?("C::X") # => true -``` - -As the last example implies, the second argument defaults to true, -as in `const_defined?`. - -For coherence with the built-in 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`. - ### Reachable A named module is reachable if it is stored in its corresponding constant. It means you can reach the module object via the constant. @@ -1012,7 +954,8 @@ class A class_attribute :x, instance_reader: false end -A.new.x = 1 # NoMethodError +A.new.x = 1 +A.new.x # NoMethodError ``` 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?`. @@ -1661,19 +1604,6 @@ Given a string with a qualified constant reference expression, `deconstantize` r "Admin::Hotel::ReservationUtils".deconstantize # => "Admin::Hotel" ``` -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 -``` - NOTE: Defined in `active_support/core_ext/string/inflections.rb`. #### `parameterize` @@ -1742,7 +1672,7 @@ NOTE: Defined in `active_support/core_ext/string/inflections.rb`. The method `constantize` resolves the constant reference expression in its receiver: ```ruby -"Fixnum".constantize # => Fixnum +"Integer".constantize # => Integer module M X = 1 @@ -2106,7 +2036,7 @@ Addition only assumes the elements respond to `+`: ```ruby [[1, 2], [2, 3], [3, 4]].sum # => [1, 2, 2, 3, 3, 4] %w(foo bar baz).sum # => "foobarbaz" -{a: 1, b: 2, c: 3}.sum # => [:b, 2, :c, 3, :a, 1] +{a: 1, b: 2, c: 3}.sum # => [:b, 2, :c, 3, :a, 1] ``` The sum of an empty collection is zero by default, but this is customizable: @@ -2349,7 +2279,7 @@ Contributor.limit(2).order(:rank).to_xml To do so it sends `to_xml` to every item in turn, and collects the results under a root node. All items must respond to `to_xml`, an exception is raised otherwise. -By default, the name of the root element is the underscorized and dasherized plural of the name of the class of the first item, provided the rest of elements belong to that type (checked with `is_a?`) and they are not hashes. In the example above that's "contributors". +By default, the name of the root element is the underscored and dasherized plural of the name of the class of the first item, provided the rest of elements belong to that type (checked with `is_a?`) and they are not hashes. In the example above that's "contributors". If there's any element that does not belong to the type of the first one the root node becomes "objects": @@ -2611,8 +2541,7 @@ To do so, the method loops over the pairs and builds nodes that depend on the _v ```ruby XML_TYPE_NAMES = { "Symbol" => "symbol", - "Fixnum" => "integer", - "Bignum" => "integer", + "Integer" => "integer", "BigDecimal" => "decimal", "Float" => "float", "TrueClass" => "boolean", @@ -2987,6 +2916,24 @@ end NOTE: Defined in `active_support/core_ext/regexp.rb`. +### `match?` + +Rails implements `Regexp#match?` for Ruby versions prior to 2.4: + +```ruby +/oo/.match?('foo') # => true +/oo/.match?('bar') # => false +/oo/.match?('foo', 1) # => true +``` + +The backport has the same interface and lack of side-effects in the caller like +not setting `$1` and friends, but it does not have the speed benefits. Its +purpose is to be able to write 2.4 compatible code. Rails itself uses this +predicate internally for example. + +Active Support defines `Regexp#match?` only if not present, so code running +under 2.4 or later does run the original one and gets the performance boost. + Extensions to `Range` --------------------- diff --git a/guides/source/active_support_instrumentation.md b/guides/source/active_support_instrumentation.md index 03af3cf819..3fc9d9bfa9 100644 --- a/guides/source/active_support_instrumentation.md +++ b/guides/source/active_support_instrumentation.md @@ -231,12 +231,13 @@ Active Record ### sql.active_record -| Key | Value | -| ---------------- | --------------------- | -| `:sql` | SQL statement | -| `:name` | Name of the operation | -| `:connection_id` | `self.object_id` | -| `:binds` | Bind parameters | +| Key | Value | +| ---------------- | ---------------------------------------- | +| `:sql` | SQL statement | +| `:name` | Name of the operation | +| `:connection_id` | `self.object_id` | +| `:binds` | Bind parameters | +| `:cached` | `true` is added when cached queries used | INFO. The adapters will add their own data as well. diff --git a/guides/source/api_app.md b/guides/source/api_app.md index 56a0767131..f373d313cc 100644 --- a/guides/source/api_app.md +++ b/guides/source/api_app.md @@ -202,7 +202,7 @@ An API application comes with the following middleware by default: - `Rack::Sendfile` - `ActionDispatch::Static` -- `ActionDispatch::LoadInterlock` +- `ActionDispatch::Executor` - `ActiveSupport::Cache::Strategy::LocalCache::Middleware` - `Rack::Runtime` - `ActionDispatch::RequestId` @@ -212,6 +212,7 @@ An API application comes with the following middleware by default: - `ActionDispatch::RemoteIp` - `ActionDispatch::Reloader` - `ActionDispatch::Callbacks` +- `ActiveRecord::Migration::CheckPending` - `Rack::Head` - `Rack::ConditionalGet` - `Rack::ETag` @@ -289,7 +290,7 @@ You can learn more about how to use `Rack::Sendfile` with popular front-ends in [the Rack::Sendfile documentation](http://rubydoc.info/github/rack/rack/master/Rack/Sendfile). -Here are some values for popular servers, once they are configured, to support +Here are some values for this header for some popular servers, once these servers are configured to support accelerated file sending: ```ruby @@ -339,7 +340,7 @@ API application, especially if one of your API clients is the browser: - `Rack::MethodOverride` - `ActionDispatch::Cookies` - `ActionDispatch::Flash` -- For sessions management +- For session management * `ActionDispatch::Session::CacheStore` * `ActionDispatch::Session::CookieStore` * `ActionDispatch::Session::MemCacheStore` @@ -373,10 +374,8 @@ controller modules by default: - `AbstractController::Rendering` and `ActionController::ApiRendering`: Basic support for rendering. - `ActionController::Renderers::All`: Support for `render :json` and friends. - `ActionController::ConditionalGet`: Support for `stale?`. -- `ActionController::BasicImplicitRender`: Makes sure to return an empty response - if there's not an explicit one. -- `ActionController::StrongParameters`: Support for parameters white-listing in - combination with Active Model mass assignment. +- `ActionController::BasicImplicitRender`: Makes sure to return an empty response, if there isn't an explicit one. +- `ActionController::StrongParameters`: Support for parameters white-listing in combination with Active Model mass assignment. - `ActionController::ForceSSL`: Support for `force_ssl`. - `ActionController::DataStreaming`: Support for `send_file` and `send_data`. - `AbstractController::Callbacks`: Support for `before_action` and @@ -386,8 +385,8 @@ controller modules by default: hooks defined by Action Controller (see [the instrumentation guide](active_support_instrumentation.html#action-controller) for more information regarding this). -- `ActionController::ParamsWrapper`: Wraps the parameters hash into a nested hash - so you don't have to specify root elements sending POST requests for instance. +- `ActionController::ParamsWrapper`: Wraps the parameters hash into a nested hash, + so that you don't have to specify root elements sending POST requests for instance. Other plugins may add additional modules. You can get a list of all modules included into `ActionController::API` in the rails console: @@ -395,6 +394,13 @@ included into `ActionController::API` in the rails console: ```bash $ bin/rails c >> ActionController::API.ancestors - ActionController::Metal.ancestors +=> [ActionController::API, + ActiveRecord::Railties::ControllerRuntime, + ActionDispatch::Routing::RouteSet::MountedHelpers, + ActionController::ParamsWrapper, + ... , + AbstractController::Rendering, + ActionView::ViewPaths] ``` ### Adding Other Modules @@ -409,7 +415,7 @@ Some common modules you might want to add: and translation methods. - `ActionController::HttpAuthentication::Basic` (or `Digest` or `Token`): Support for basic, digest or token HTTP authentication. -- `AbstractController::Layouts`: Support for layouts when rendering. +- `ActionView::Layouts`: Support for layouts when rendering. - `ActionController::MimeResponds`: Support for `respond_to`. - `ActionController::Cookies`: Support for `cookies`, which includes support for signed and encrypted cookies. This requires the cookies middleware. diff --git a/guides/source/api_documentation_guidelines.md b/guides/source/api_documentation_guidelines.md index cd208c2e13..34b9c0d2ca 100644 --- a/guides/source/api_documentation_guidelines.md +++ b/guides/source/api_documentation_guidelines.md @@ -20,7 +20,7 @@ The [Rails API documentation](http://api.rubyonrails.org) is generated with in the rails root directory, run `bundle install` and execute: ```bash - ./bin/rails rdoc + bundle exec rake rdoc ``` Resulting HTML files can be found in the ./doc/rdoc directory. @@ -120,7 +120,7 @@ On the other hand, big chunks of structured documentation may have a separate "E The results of expressions follow them and are introduced by "# => ", vertically aligned: ```ruby -# For checking if a fixnum is even or odd. +# For checking if an integer is even or odd. # # 1.even? # => false # 1.odd? # => true diff --git a/guides/source/asset_pipeline.md b/guides/source/asset_pipeline.md index 93acebf000..41dfeea84d 100644 --- a/guides/source/asset_pipeline.md +++ b/guides/source/asset_pipeline.md @@ -435,11 +435,11 @@ 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 can be greatly reduced because the browser -makes fewer requests. Compression also reduces file size, enabling the -browser to download them faster. +necessary, concatenates them into one single file and then compresses them +(based on value of `Rails.application.config.assets.js_compressor`). By serving +one file rather than many, the load time of pages can be greatly reduced because +the browser makes fewer requests. Compression also reduces file size, enabling +the browser to download them faster. For example, a new Rails application includes a default @@ -485,7 +485,7 @@ which contains these lines: Rails creates both `app/assets/javascripts/application.js` and `app/assets/stylesheets/application.css` regardless of whether the ---skip-sprockets option is used when creating a new rails application. This is +--skip-sprockets option is used when creating a new Rails application. This is so you can easily add asset pipelining later if you like. The directives that work in JavaScript files also work in stylesheets @@ -586,6 +586,19 @@ in your application are included in the `config.assets.precompile` list. If `config.assets.digest` is also true, the asset pipeline will require that all requests for assets include digests. +### Raise an Error When an Asset is Not Found + +If you are using sprockets-rails >= 3.2.0 you can configure what happens +when an asset lookup is performed and nothing is found. If you turn off "asset fallback" +then an error will be raised when an asset cannot be found. + +```ruby +config.assets.unknown_asset_fallback = false +``` + +If "asset fallback" is enabled then when an asset cannot be found the path will be +output instead and no error raised. The asset fallback behavior is enabled by default. + ### Turning Digests Off You can turn off digests by updating `config/environments/development.rb` to @@ -724,7 +737,7 @@ If you have other manifests or individual stylesheets and JavaScript files to include, you can add them to the `precompile` array in `config/initializers/assets.rb`: ```ruby -Rails.application.config.assets.precompile += ['admin.js', 'admin.css', 'swfObject.js'] +Rails.application.config.assets.precompile += %w( admin.js admin.css ) ``` NOTE. Always specify an expected compiled filename that ends with .js or .css, @@ -1024,7 +1037,7 @@ to tell our CDN (and browser) that the asset is "public", that means any cache can store the request. Also we commonly want to set `max-age` which is how long the cache will store the object before invalidating the cache. The `max-age` value is set to seconds with a maximum possible value of `31536000` which is one -year. You can do this in your rails application by setting +year. You can do this in your Rails application by setting ``` config.public_file_server.headers = { @@ -1105,18 +1118,13 @@ NOTE: You will need an [ExecJS](https://github.com/rails/execjs#readme) supported runtime in order to use `uglifier`. If you are using Mac OS X or Windows you have a JavaScript runtime installed in your operating system. -NOTE: The `config.assets.compress` initialization option is no longer used in -Rails to enable either CSS or JavaScript compression. Setting it will have no -effect on the application. Instead, setting `config.assets.css_compressor` and -`config.assets.js_compressor` will control compression of CSS and JavaScript -assets. ### Serving GZipped version of assets -By default, gzipped version of compiled assets will be generated, along -with the non-gzipped version of assets. Gzipped assets help reduce the transmission of -data over the wire. You can configure this by setting the `gzip` flag. +By default, gzipped version of compiled assets will be generated, along with +the non-gzipped version of assets. Gzipped assets help reduce the transmission +of data over the wire. You can configure this by setting the `gzip` flag. ```ruby config.assets.gzip = false # disable gzipped assets generation @@ -1291,12 +1299,12 @@ config.assets.js_compressor = :uglifier # Don't fallback to assets pipeline if a precompiled asset is missed config.assets.compile = false -# Generate digests for assets URLs. This is planned for deprecation. +# Generate digests for assets URLs. config.assets.digest = true # Precompile additional assets (application.js, application.css, and all # non-JS/CSS are already added) -# config.assets.precompile += %w( search.js ) +# config.assets.precompile += %w( admin.js admin.css ) ``` Rails 4 and above no longer set default config values for Sprockets in `test.rb`, so diff --git a/guides/source/association_basics.md b/guides/source/association_basics.md index 4977d4f30e..3837cda553 100644 --- a/guides/source/association_basics.md +++ b/guides/source/association_basics.md @@ -387,7 +387,7 @@ The corresponding migration might look like this: class CreateSuppliers < ActiveRecord::Migration[5.0] def change create_table :suppliers do |t| - t.string :name + t.string :name t.timestamps end @@ -550,8 +550,8 @@ But what if you want to reload the cache, because data might have been changed b ```ruby author.books # retrieves books from the database author.books.size # uses the cached copy of books -author.books.reload.empty? # discards the cached copy of books - # and goes back to the database +author.books.reload.empty? # discards the cached copy of books + # and goes back to the database ``` ### Avoiding Name Collisions @@ -1007,7 +1007,7 @@ class Author < ApplicationRecord end ``` -In this case, saving or destroying an book will update the timestamp on the associated author. You can also specify a particular timestamp attribute to update: +In this case, saving or destroying a book will update the timestamp on the associated author. You can also specify a particular timestamp attribute to update: ```ruby class Book < ApplicationRecord @@ -1477,7 +1477,7 @@ WARNING: Objects will _always_ be removed from the database, ignoring the `:depe ##### `collection=(objects)` -The `collection=` method makes the collection contain only the supplied objects, by adding and deleting as appropriate. +The `collection=` method makes the collection contain only the supplied objects, by adding and deleting as appropriate. The changes are persisted to the database. ##### `collection_singular_ids` @@ -1489,7 +1489,7 @@ The `collection_singular_ids` method returns an array of the ids of the objects ##### `collection_singular_ids=(ids)` -The `collection_singular_ids=` method makes the collection contain only the objects identified by the supplied primary key values, by adding and deleting as appropriate. +The `collection_singular_ids=` method makes the collection contain only the objects identified by the supplied primary key values, by adding and deleting as appropriate. The changes are persisted to the database. ##### `collection.clear` @@ -1841,7 +1841,7 @@ article = Article.create(name: 'a1') person.articles << article person.articles << article person.articles.inspect # => [#<Article id: 5, name: "a1">, #<Article id: 5, name: "a1">] -Reading.all.inspect # => [#<Reading id: 12, person_id: 5, article_id: 5>, #<Reading id: 13, person_id: 5, article_id: 5>] +Reading.all.inspect # => [#<Reading id: 12, person_id: 5, article_id: 5>, #<Reading id: 13, person_id: 5, article_id: 5>] ``` In the above case there are two readings and `person.articles` brings out both of @@ -1860,7 +1860,7 @@ article = Article.create(name: 'a1') person.articles << article person.articles << article person.articles.inspect # => [#<Article id: 7, name: "a1">] -Reading.all.inspect # => [#<Reading id: 16, person_id: 7, article_id: 7>, #<Reading id: 17, person_id: 7, article_id: 7>] +Reading.all.inspect # => [#<Reading id: 16, person_id: 7, article_id: 7>, #<Reading id: 17, person_id: 7, article_id: 7>] ``` In the above case there are still two readings. However `person.articles` shows @@ -2006,7 +2006,7 @@ The `collection.destroy` method removes one or more objects from the collection ##### `collection=(objects)` -The `collection=` method makes the collection contain only the supplied objects, by adding and deleting as appropriate. +The `collection=` method makes the collection contain only the supplied objects, by adding and deleting as appropriate. The changes are persisted to the database. ##### `collection_singular_ids` @@ -2018,7 +2018,7 @@ The `collection_singular_ids` method returns an array of the ids of the objects ##### `collection_singular_ids=(ids)` -The `collection_singular_ids=` method makes the collection contain only the objects identified by the supplied primary key values, by adding and deleting as appropriate. +The `collection_singular_ids=` method makes the collection contain only the objects identified by the supplied primary key values, by adding and deleting as appropriate. The changes are persisted to the database. ##### `collection.clear` diff --git a/guides/source/autoloading_and_reloading_constants.md b/guides/source/autoloading_and_reloading_constants.md index 246fde69d5..61657023e7 100644 --- a/guides/source/autoloading_and_reloading_constants.md +++ b/guides/source/autoloading_and_reloading_constants.md @@ -449,9 +449,10 @@ Alright, Rails has a collection of directories similar to `$LOAD_PATH` in which to look up `post.rb`. That collection is called `autoload_paths` and by default it contains: -* All subdirectories of `app` in the application and engines. For example, - `app/controllers`. They do not need to be the default ones, any custom - directories like `app/workers` belong automatically to `autoload_paths`. +* All subdirectories of `app` in the application and engines present at boot + time. For example, `app/controllers`. They do not need to be the default + ones, any custom directories like `app/workers` belong automatically to + `autoload_paths`. * Any existing second level directories called `app/*/concerns` in the application and engines. diff --git a/guides/source/caching_with_rails.md b/guides/source/caching_with_rails.md index 745f09f523..fd7626250c 100644 --- a/guides/source/caching_with_rails.md +++ b/guides/source/caching_with_rails.md @@ -100,8 +100,8 @@ called key-based expiration. Cache fragments will also be expired when the view fragment changes (e.g., the HTML in the view changes). The string of characters at the end of the key is a -template tree digest. It is an md5 hash computed based on the contents of the -view fragment you are caching. If you change the view fragment, the md5 hash +template tree digest. It is an MD5 hash computed based on the contents of the +view fragment you are caching. If you change the view fragment, the MD5 hash will change, expiring the existing file. TIP: Cache stores like Memcached will automatically delete old cache files. @@ -198,11 +198,11 @@ render "comments/comments" render 'comments/comments' render('comments/comments') -render "header" => render("comments/header") +render "header" translates to render("comments/header") -render(@topic) => render("topics/topic") -render(topics) => render("topics/topic") -render(message.topics) => render("topics/topic") +render(@topic) translates to render("topics/topic") +render(topics) translates to render("topics/topic") +render(message.topics) translates to render("topics/topic") ``` On the other hand, some calls need to be changed to make caching work properly. @@ -258,7 +258,7 @@ comment format anywhere in the template, like: If you use a helper method, for example, inside a cached block and you then update that helper, you'll have to bump the cache as well. It doesn't really matter how -you do it, but the md5 of the template file must change. One recommendation is to +you do it, but the MD5 of the template file must change. One recommendation is to simply be explicit in a comment, like: ```html+erb @@ -270,7 +270,7 @@ simply be explicit in a comment, like: Sometimes you need to cache a particular value or query result instead of caching view fragments. Rails' caching mechanism works great for storing __any__ kind of information. -The most efficient way to implement low-level caching is using the `Rails.cache.fetch` method. This method does both reading and writing to the cache. When passed only a single argument, the key is fetched and value from the cache is returned. If a block is passed, the result of the block will be cached to the given key and the result is returned. +The most efficient way to implement low-level caching is using the `Rails.cache.fetch` method. This method does both reading and writing to the cache. When passed only a single argument, the key is fetched and value from the cache is returned. If a block is passed, that block will be executed in the event of a cache miss. The return value of the block will be written to the cache under the given cache key, and that return value will be returned. In case of cache hit, the cached value will be returned without executing the block. Consider the following example. An application has a `Product` model with an instance method that looks up the product’s price on a competing website. The data returned by this method would be perfect for low-level caching: @@ -381,7 +381,7 @@ config.cache_store = :memory_store, { size: 64.megabytes } ``` If you're running multiple Ruby on Rails server processes (which is the case -if you're using mongrel_cluster or Phusion Passenger), then your Rails server +if you're using Phusion Passenger or puma clustered mode), then your Rails server process instances won't be able to share cache data with each other. This cache store is not appropriate for large application deployments. However, it can work well for small, low traffic sites with only a couple of server processes, @@ -512,6 +512,30 @@ class ProductsController < ApplicationController end ``` +Sometimes we want to cache response, for example a static page, that never gets +expired. To achieve this, we can use `http_cache_forever` helper and by doing +so browser and proxies will cache it indefinitely. + +By default cached responses will be private, cached only on the user's web +browser. To allow proxies to cache the response, set `public: true` to indicate +that they can serve the cached response to all users. + +Using this helper, `last_modified` header is set to `Time.new(2011, 1, 1).utc` +and `expires` header is set to a 100 years. + +WARNING: Use this method carefully as browser/proxy won't be able to invalidate +the cached response unless browser cache is forcefully cleared. + +```ruby +class HomeController < ApplicationController + def index + http_cache_forever(public: true) do + render + end + end +end +``` + ### Strong v/s Weak ETags Rails generates weak ETags by default. Weak ETags allow semantically equivalent diff --git a/guides/source/command_line.md b/guides/source/command_line.md index 0905c4bd16..9d7ecce947 100644 --- a/guides/source/command_line.md +++ b/guides/source/command_line.md @@ -209,7 +209,7 @@ Description: Create rails files for model generator. ``` -NOTE: For a list of available field types, refer to the [API documentation](http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/TableDefinition.html#method-i-column) for the column method for the `TableDefinition` class. +NOTE: For a list of available field types for the `type` parameter, refer to the [API documentation](http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/SchemaStatements.html#method-i-add_column) for the add_column method for the `SchemaStatements` module. The `index` parameter generates a corresponding index for the column. But instead of generating a model directly (which we'll be doing later), let's set up a scaffold. A **scaffold** in Rails is a full set of model, database migration for that model, controller to manipulate it, views to view and manipulate the data, and a test suite for each of the above. @@ -433,7 +433,7 @@ Ruby version 2.2.2 (x86_64-linux) RubyGems version 2.4.6 Rack version 1.6 JavaScript Runtime Node.js (V8) -Middleware Rack::Sendfile, ActionDispatch::Static, ActionDispatch::LoadInterlock, #<ActiveSupport::Cache::Strategy::LocalCache::Middleware:0x007ffd131a7c88>, Rack::Runtime, Rack::MethodOverride, ActionDispatch::RequestId, Rails::Rack::Logger, ActionDispatch::ShowExceptions, ActionDispatch::DebugExceptions, ActionDispatch::RemoteIp, ActionDispatch::Reloader, ActionDispatch::Callbacks, ActiveRecord::Migration::CheckPending, ActiveRecord::ConnectionAdapters::ConnectionManagement, ActiveRecord::QueryCache, ActionDispatch::Cookies, ActionDispatch::Session::CookieStore, ActionDispatch::Flash, Rack::Head, Rack::ConditionalGet, Rack::ETag +Middleware Rack::Sendfile, ActionDispatch::Static, ActionDispatch::Executor, #<ActiveSupport::Cache::Strategy::LocalCache::Middleware:0x007ffd131a7c88>, Rack::Runtime, Rack::MethodOverride, ActionDispatch::RequestId, Rails::Rack::Logger, ActionDispatch::ShowExceptions, ActionDispatch::DebugExceptions, ActionDispatch::RemoteIp, ActionDispatch::Reloader, ActionDispatch::Callbacks, ActiveRecord::Migration::CheckPending, ActionDispatch::Cookies, ActionDispatch::Session::CookieStore, ActionDispatch::Flash, Rack::Head, Rack::ConditionalGet, Rack::ETag Application root /home/foobar/commandsapp Environment development Database adapter sqlite3 @@ -497,7 +497,13 @@ app/models/article.rb: NOTE. When using specific annotations and custom annotations, the annotation name (FIXME, BUG etc) is not displayed in the output lines. -By default, `rails notes` will look in the `app`, `config`, `db`, `lib` and `test` directories. If you would like to search other directories, you can provide them as a comma separated list in an environment variable `SOURCE_ANNOTATION_DIRECTORIES`. +By default, `rails notes` will look in the `app`, `config`, `db`, `lib` and `test` directories. If you would like to search other directories, you can configure them using `config.annotations.register_directories` option. + +```ruby +config.annotations.register_directories("spec", "vendor") +``` + +You can also provide them as a comma separated list in the environment variable `SOURCE_ANNOTATION_DIRECTORIES`. ```bash $ export SOURCE_ANNOTATION_DIRECTORIES='spec,vendor' diff --git a/guides/source/configuring.md b/guides/source/configuring.md index 87d023ef2a..3df8a0ed26 100644 --- a/guides/source/configuring.md +++ b/guides/source/configuring.md @@ -60,22 +60,22 @@ These configuration methods are to be called on a `Rails::Railtie` object, such * `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 built-in in browsers using different domain aliases. Shorter version of `config.action_controller.asset_host`. -* `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_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 false in development mode, and true in test and production modes. +* `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. * `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`. * `config.beginning_of_week` sets the default beginning of week for the application. Accepts a valid week day symbol (e.g. `:monday`). -* `config.cache_store` configures which cache store to use for Rails caching. Options include one of the symbols `:memory_store`, `:file_store`, `:mem_cache_store`, `:null_store`, or an object that implements the cache API. Defaults to `:file_store` if the directory `tmp/cache` exists, and to `:memory_store` otherwise. +* `config.cache_store` configures which cache store to use for Rails caching. Options include one of the symbols `:memory_store`, `:file_store`, `:mem_cache_store`, `:null_store`, or an object that implements the cache API. Defaults to `:file_store`. -* `config.colorize_logging` specifies whether or not to use ANSI color codes when logging information. Defaults to true. +* `config.colorize_logging` specifies whether or not to use ANSI color codes when logging information. Defaults to `true`. -* `config.consider_all_requests_local` is a flag. If true then any error will cause detailed debugging information to be dumped in the HTTP response, and the `Rails::Info` controller will show the application runtime context in `/rails/info/properties`. True by default in development and test environments, and false in production mode. For finer-grained control, set this to false and implement `local_request?` in controllers to specify which requests should provide debugging information on errors. +* `config.consider_all_requests_local` is a flag. If `true` then any error will cause detailed debugging information to be dumped in the HTTP response, and the `Rails::Info` controller will show the application runtime context in `/rails/info/properties`. `true` by default in development and test environments, and `false` in production mode. For finer-grained control, set this to `false` and implement `local_request?` in controllers to specify which requests should provide debugging information on errors. * `config.console` allows you to set class that will be used as console you run `rails console`. It's best to run it in `console` block: @@ -88,19 +88,21 @@ application. Accepts a valid week day symbol (e.g. `:monday`). end ``` -* `config.eager_load` when true, eager loads all registered `config.eager_load_namespaces`. This includes your application, engines, Rails frameworks and any other registered namespace. +* `config.eager_load` when `true`, eager loads all registered `config.eager_load_namespaces`. This includes your application, engines, Rails frameworks and any other registered namespace. -* `config.eager_load_namespaces` registers namespaces that are eager loaded when `config.eager_load` is true. All namespaces in the list must respond to the `eager_load!` method. +* `config.eager_load_namespaces` registers namespaces that are eager loaded when `config.eager_load` is `true`. All namespaces in the list must respond to the `eager_load!` method. * `config.eager_load_paths` accepts an array of paths from which Rails will eager load on boot if cache classes is enabled. Defaults to every folder in the `app` directory of the application. +* `config.enable_dependency_loading`: when true, enables autoloading, even if the application is eager loaded and `config.cache_classes` is set as true. Defaults to false. + * `config.encoding` sets up the application-wide encoding. Defaults to UTF-8. * `config.exceptions_app` sets the exceptions application invoked by the ShowException middleware when an exception happens. Defaults to `ActionDispatch::PublicExceptions.new(Rails.public_path)`. * `config.debug_exception_response_format` sets the format used in responses when errors occur in development mode. Defaults to `:api` for API only apps and `:default` for normal apps. -* `config.file_watcher` is the class used to detect file updates in the file system when `config.reload_classes_only_on_change` is true. Rails ships with `ActiveSupport::FileUpdateChecker`, the default, and `ActiveSupport::EventedFileUpdateChecker` (this one depends on the [listen](https://github.com/guard/listen) gem). Custom classes must conform to the `ActiveSupport::FileUpdateChecker` API. +* `config.file_watcher` is the class used to detect file updates in the file system when `config.reload_classes_only_on_change` is `true`. Rails ships with `ActiveSupport::FileUpdateChecker`, the default, and `ActiveSupport::EventedFileUpdateChecker` (this one depends on the [listen](https://github.com/guard/listen) gem). Custom classes must conform to the `ActiveSupport::FileUpdateChecker` API. * `config.filter_parameters` used for filtering out the parameters that you don't want shown in the logs, such as passwords or credit card @@ -129,18 +131,18 @@ defaults to `:debug` for all environments. The available log levels are: `:debug mylogger = MyLogger.new(STDOUT) mylogger.formatter = config.log_formatter - config.logger = ActiveSupport::TaggedLogging.new(mylogger) + config.logger = ActiveSupport::TaggedLogging.new(mylogger) ``` * `config.middleware` allows you to configure the application's middleware. This is covered in depth in the [Configuring Middleware](#configuring-middleware) section below. -* `config.reload_classes_only_on_change` enables or disables reloading of classes only when tracked files change. By default tracks everything on autoload paths and is set to true. If `config.cache_classes` is true, this option is ignored. +* `config.reload_classes_only_on_change` enables or disables reloading of classes only when tracked files change. By default tracks everything on autoload paths and is set to `true`. If `config.cache_classes` is `true`, this option is ignored. * `secrets.secret_key_base` is used for specifying a key which allows sessions for the application to be verified against a known secure key to prevent tampering. Applications get `secrets.secret_key_base` initialized to a random key present in `config/secrets.yml`. -* `config.public_file_server.enabled` configures Rails to serve static files from the public directory. This option defaults to true, but in the production environment it is set to false because the server software (e.g. NGINX or Apache) used to run the application should serve static files instead. If you are running or testing your app in production mode using WEBrick (it is not recommended to use WEBrick in production) set the option to true. Otherwise, you won't be able to use page caching and request for files that exist under the public directory. +* `config.public_file_server.enabled` configures Rails to serve static files from the public directory. This option defaults to `true`, but in the production environment it is set to `false` because the server software (e.g. NGINX or Apache) used to run the application should serve static files instead. If you are running or testing your app in production mode using WEBrick (it is not recommended to use WEBrick in production) set the option to `true.` Otherwise, you won't be able to use page caching and request for files that exist under the public directory. -* `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: +* `config.session_store` 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. Defaults to a cookie store with application name as the session key. Custom session stores can also be specified: ```ruby config.session_store :my_custom_store @@ -153,22 +155,22 @@ defaults to `:debug` for all environments. The available log levels are: `:debug ### Configuring Assets * `config.assets.enabled` a flag that controls whether the asset -pipeline is enabled. It is set to true by default. +pipeline is enabled. It is set to `true` by default. * `config.assets.raise_runtime_errors` Set this flag to `true` to enable additional runtime error checking. Recommended in `config/environments/development.rb` to minimize unexpected behavior when deploying to `production`. -* `config.assets.compress` a flag that enables the compression of compiled assets. It is explicitly set to true in `config/environments/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.gzip` a flag that enables the creation of gzipped version of compiled assets, along with non-gzipped assets. Set to `true` by default. +* `config.assets.gzip` a flag that enables the creation of gzipped version of compiled assets, along with non-gzipped assets. Set to `true` by default. * `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.unknown_asset_fallback` allows you to modify the behavior of the asset pipeline when an asset is not in the pipeline, if you use sprockets-rails 3.2.0 or newer. Defaults to `true`. + * `config.assets.prefix` defines the prefix where assets are served from. Defaults to `/assets`. * `config.assets.manifest` defines the full path to be used for the asset precompiler's manifest file. Defaults to a file named `manifest-<random>.json` in the `config.assets.prefix` directory within the public folder. @@ -179,7 +181,9 @@ pipeline is enabled. It is set to true by default. * `config.assets.compile` is a boolean that can be used to turn on live Sprockets compilation in production. -* `config.assets.logger` accepts a logger conforming to the interface of Log4r or the default Ruby `Logger` class. Defaults to the same configured at `config.logger`. Setting `config.assets.logger` to false will turn off served assets logging. +* `config.assets.logger` accepts a logger conforming to the interface of Log4r or the default Ruby `Logger` class. Defaults to the same configured at `config.logger`. Setting `config.assets.logger` to `false` will turn off served assets logging. + +* `config.assets.quiet` disables logging of assets requests. Set to `true` by default in `development.rb`. ### Configuring Generators @@ -217,7 +221,7 @@ Every Rails application comes with a standard set of middleware which it uses in * `ActionDispatch::SSL` forces every request to be served using HTTPS. Enabled if `config.force_ssl` is set to `true`. Options passed to this can be configured by setting `config.ssl_options`. * `ActionDispatch::Static` is used to serve static assets. Disabled if `config.public_file_server.enabled` is `false`. Set `config.public_file_server.index_name` if you need to serve a static directory index file that is not named `index`. For example, to serve `main.html` instead of `index.html` for directory requests, set `config.public_file_server.index_name` to `"main"`. -* `ActionDispatch::LoadInterlock` allows thread safe code reloading. Disabled if `config.allow_concurrency` is `false`, which causes `Rack::Lock` to be loaded. `Rack::Lock` wraps the app in mutex so it can only be called by a single thread at a time. +* `ActionDispatch::Executor` allows thread safe code reloading. Disabled if `config.allow_concurrency` is `false`, which causes `Rack::Lock` to be loaded. `Rack::Lock` wraps the app in mutex so it can only be called by a single thread at a time. * `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 begun. After request is complete, flushes all the logs. @@ -226,8 +230,6 @@ Every Rails application comes with a standard set of middleware which it uses in * `ActionDispatch::RemoteIp` checks for IP spoofing attacks and gets valid `client_ip` from request headers. Configurable with the `config.action_dispatch.ip_spoofing_check`, and `config.action_dispatch.trusted_proxies` options. * `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. @@ -246,6 +248,12 @@ This will put the `Magical::Unicorns` middleware on the end of the stack. You ca config.middleware.insert_before Rack::Head, Magical::Unicorns ``` +Or you can insert a middleware to exact position by using indexes. For example, if you want to insert `Magical::Unicorns` middleware on top of the stack, you can do it, like so: + +```ruby +config.middleware.insert_before 0, Magical::Unicorns +``` + There's also `insert_after` which will insert a middleware after another: ```ruby @@ -276,6 +284,28 @@ All these configuration options are delegated to the `I18n` library. * `config.i18n.load_path` sets the path Rails uses to look for locale files. Defaults to `config/locales/*.{yml,rb}`. +* `config.i18n.fallbacks` sets fallback behavior for missing translations. Here are 3 usage examples for this option: + + * You can set the option to `true` for using default locale as fallback, like so: + + ```ruby + config.i18n.fallbacks = true + ``` + + * Or you can set an array of locales as fallback, like so: + + ```ruby + config.i18n.fallbacks = [:tr, :en] + ``` + + * Or you can set different fallbacks for locales individually. For example, if you want to use `:tr` for `:az` and `:de`, `:en` for `:da` as fallbacks, you can do it, like so: + + ```ruby + config.i18n.fallbacks = { az: :tr, da: [:de, :en] } + #or + config.i18n.fallbacks.map = { az: :tr, da: [:de, :en] } + ``` + ### Configuring Active Record `config.active_record` includes a variety of configuration options: @@ -292,17 +322,17 @@ All these configuration options are delegated to the `I18n` library. * `config.active_record.schema_migrations_table_name` lets you set a string to be used as the name of the schema migrations 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.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`. * `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.error_on_ignored_order_or_limit` specifies if an error should be raised if the order or limit of a query is ignored during a batch query. The options are true (raise error) or false (warn). Default is false. +* `config.active_record.error_on_ignored_order` specifies if an error should be raised if the order of a query is ignored during a batch query. The options are `true` (raise error) or `false` (warn). Default is `false`. -* `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 Active Record will use optimistic locking and is true by default. +* `config.active_record.lock_optimistically` controls whether Active Record will use optimistic locking and is `true` by default. * `config.active_record.cache_timestamp_format` controls the format of the timestamp value in the cache key. Default is `:nsec`. @@ -310,13 +340,13 @@ All these configuration options are delegated to the `I18n` library. * `config.active_record.partial_writes` is a boolean value and controls whether or not partial writes are used (i.e. whether updates only set attributes that are dirty). Note that when using partial writes, you should also use optimistic locking `config.active_record.lock_optimistically` since concurrent updates may write attributes based on a possibly stale read state. The default value is `true`. -* `config.active_record.maintain_test_schema` is a boolean value which controls whether Active Record should try to keep your test database schema up-to-date with `db/schema.rb` (or `db/structure.sql`) when you run your tests. The default is true. +* `config.active_record.maintain_test_schema` is a boolean value which controls whether Active Record should try to keep your test database schema up-to-date with `db/schema.rb` (or `db/structure.sql`) when you run your tests. The default is `true`. * `config.active_record.dump_schema_after_migration` is a flag which controls whether or not schema dump should happen (`db/schema.rb` or - `db/structure.sql`) when you run migrations. This is set to false in + `db/structure.sql`) when you run migrations. This is set to `false` in `config/environments/production.rb` which is generated by Rails. The - default value is true if this configuration is not set. + default value is `true` if this configuration is not set. * `config.active_record.dump_schemas` controls which database schemas will be dumped when calling db:structure:dump. The options are `:schema_search_path` (the default) which dumps any schemas listed in schema_search_path, @@ -334,11 +364,11 @@ All these configuration options are delegated to the `I18n` library. * `config.active_record.index_nested_attribute_errors` allows errors for nested has_many relationships to be displayed with an index as well as the error. - Defaults to false. + Defaults to `false`. The MySQL adapter adds one additional configuration option: -* `ActiveRecord::ConnectionAdapters::Mysql2Adapter.emulate_booleans` controls whether Active Record will consider all `tinyint(1)` columns as booleans. True by default. +* `ActiveRecord::ConnectionAdapters::Mysql2Adapter.emulate_booleans` controls whether Active Record will consider all `tinyint(1)` columns as booleans. Defaults to `true`. The schema dumper adds one additional configuration option: @@ -350,7 +380,7 @@ The schema dumper adds one additional configuration option: * `config.action_controller.asset_host` sets the host for the assets. Useful when CDNs are used for hosting assets rather than the application server itself. -* `config.action_controller.perform_caching` configures whether the application should perform the caching features provided by the Action Controller component or not. Set to false in development mode, true in production. +* `config.action_controller.perform_caching` configures whether the application should perform the caching features provided by the Action Controller component or not. Set to `false` in development mode, `true` in production. * `config.action_controller.default_static_extension` configures the extension used for cached pages. Defaults to `.html`. @@ -374,6 +404,22 @@ The schema dumper adds one additional configuration option: * `config.action_controller.always_permitted_parameters` sets a list of whitelisted parameters that are permitted by default. The default values are `['controller', 'action']`. +* `config.action_controller.enable_fragment_cache_logging` determines whether to log fragment cache reads and writes in verbose format as follows: + + ``` + Read fragment views/v1/2914079/v1/2914079/recordings/70182313-20160225015037000000/d0bdf2974e1ef6d31685c3b392ad0b74 (0.6ms) + Rendered messages/_message.html.erb in 1.2 ms [cache hit] + Write fragment views/v1/2914079/v1/2914079/recordings/70182313-20160225015037000000/3b4e249ac9d168c617e32e84b99218b5 (1.1ms) + Rendered recordings/threads/_thread.html.erb in 1.5 ms [cache miss] + ``` + + By default it is set to `false` which results in following output: + + ``` + Rendered messages/_message.html.erb in 1.2 ms [cache hit] + Rendered recordings/threads/_thread.html.erb in 1.5 ms [cache miss] + ``` + ### Configuring Action Dispatch * `config.action_dispatch.session_store` sets the name of the store for session data. The default is `:cookie_store`; other valid options include `:active_record_store`, `:mem_cache_store` or the name of your own custom class. @@ -392,6 +438,10 @@ The schema dumper adds one additional configuration option: * `config.action_dispatch.tld_length` sets the TLD (top-level domain) length for the application. Defaults to `1`. +* `config.action_dispatch.ignore_accept_header` is used to determine whether to ignore accept headers from a request. Defaults to `false`. + +* `config.action_dispatch.x_sendfile_header` specifies server specific X-Sendfile header. This is useful for accelerated file sending from server. For example it can be set to 'X-Sendfile' for Apache. + * `config.action_dispatch.http_auth_salt` sets the HTTP Auth salt value. Defaults to `'http authentication'`. @@ -406,7 +456,7 @@ encrypted cookies salt value. Defaults to `'signed encrypted cookie'`. * `config.action_dispatch.perform_deep_munge` configures whether `deep_munge` method should be performed on the parameters. See [Security Guide](security.html#unsafe-query-generation) - for more information. It defaults to true. + for more information. It defaults to `true`. * `config.action_dispatch.rescue_responses` configures what exceptions are assigned to an HTTP status. It accepts a hash and you can specify pairs of exception/status. By default, this is defined as: @@ -423,6 +473,8 @@ encrypted cookies salt value. Defaults to `'signed encrypted cookie'`. 'ActionDispatch::ParamsParser::ParseError' => :bad_request, 'ActionController::BadRequest' => :bad_request, 'ActionController::ParameterMissing' => :bad_request, + 'Rack::QueryParser::ParameterTypeError' => :bad_request, + 'Rack::QueryParser::InvalidParameterError' => :bad_request, 'ActiveRecord::RecordNotFound' => :not_found, 'ActiveRecord::StaleObjectError' => :conflict, 'ActiveRecord::RecordInvalid' => :unprocessable_entity, @@ -461,7 +513,7 @@ encrypted cookies salt value. Defaults to `'signed encrypted cookie'`. * `config.action_view.embed_authenticity_token_in_remote_forms` allows you to set the default behavior for `authenticity_token` in forms with `remote: - true`. By default it's set to false, which means that remote forms will not + true`. By default it's set to `false`, which means that remote forms will not include `authenticity_token`, which is helpful when you're fragment-caching the form. Remote forms get the authenticity from the `meta` tag, so embedding is unnecessary unless you support browsers without JavaScript. In such case @@ -480,9 +532,9 @@ encrypted cookies salt value. Defaults to `'signed encrypted cookie'`. error should be raised for missing translations. * `config.action_view.automatically_disable_submit_tag` determines whether - submit_tag should automatically disable on click, this defaults to true. + submit_tag should automatically disable on click, this defaults to `true`. -* `config.action_view.debug_missing_translation` determines whether to wrap the missing translations key in a `<span>` tag or not. This defaults to true. +* `config.action_view.debug_missing_translation` determines whether to wrap the missing translations key in a `<span>` tag or not. This defaults to `true`. ### Configuring Action Mailer @@ -497,16 +549,19 @@ There are a number of settings available on `config.action_mailer`: * `:user_name` - If your mail server requires authentication, set the username in this setting. * `:password` - If your mail server requires authentication, set the password in this setting. * `: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`. + * `:enable_starttls_auto` - Detects if STARTTLS is enabled in your SMTP server and starts to use it. It defaults to `true`. + * `:openssl_verify_mode` - When using TLS, you can set how OpenSSL checks the certificate. This is useful if you need to validate a self-signed and/or a wildcard certificate. This can be one of the OpenSSL verify constants, `:none` or `:peer` -- or the constant directly `OpenSSL::SSL::VERIFY_NONE` or `OpenSSL::SSL::VERIFY_PEER`, respectively. + * `:ssl/:tls` - Enables the SMTP connection to use SMTP/TLS (SMTPS: SMTP over direct TLS connection). * `config.action_mailer.sendmail_settings` allows detailed configuration for the `sendmail` delivery method. It accepts a hash of options, which can include any of these options: * `:location` - The location of the sendmail executable. Defaults to `/usr/sbin/sendmail`. - * `:arguments` - The command line arguments. Defaults to `-i -t`. + * `:arguments` - The command line arguments. Defaults to `-i`. -* `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 and defaults to `:smtp`. See the [configuration section in the Action Mailer guide](action_mailer_basics.html#action-mailer-configuration) for more info. -* `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.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_options` configures Action Mailer defaults. Use to set options like `from` or `reply_to` for every mailer. These default to: @@ -552,7 +607,7 @@ There are a number of settings available on `config.action_mailer`: * `config.action_mailer.deliver_later_queue_name` specifies the queue name for mailers. By default this is `mailers`. -* `config.action_mailer.perform_caching` specifies whether the mailer templates should perform fragment caching or not. By default this is false in all environments. +* `config.action_mailer.perform_caching` specifies whether the mailer templates should perform fragment caching or not. By default this is `false` in all environments. ### Configuring Active Support @@ -561,7 +616,7 @@ There are a few configuration options available in Active Support: * `config.active_support.bare` enables or disables the loading of `active_support/all` when booting Rails. Defaults to `nil`, which means `active_support/all` is loaded. -* `config.active_support.test_order` sets the order that test cases are executed. Possible values are `:random` and `:sorted`. This option is set to `:random` in `config/environments/test.rb` in newly-generated applications. If you have an application that does not specify a `test_order`, it will default to `:sorted`, *until* Rails 5.0, when the default will become `:random`. +* `config.active_support.test_order` sets the order in which the test cases are executed. Possible values are `:random` and `:sorted`. Defaults to `:random`. * `config.active_support.escape_html_entities_in_json` enables or disables the escaping of HTML entities in JSON serialization. Defaults to `true`. @@ -569,7 +624,7 @@ There are a few configuration options available in Active Support: * `config.active_support.time_precision` sets the precision of JSON encoded time values. Defaults to `3`. -* `ActiveSupport.halt_callback_chains_on_return_false` specifies whether Active Record and Active Model callback chains can be halted by returning `false` in a 'before' callback. When set to `false`, callback chains are halted only when explicitly done so with `throw(:abort)`. When set to `true`, callback chains are halted when a callback returns false (the previous behavior before Rails 5) and a deprecation warning is given. Defaults to `true` during the deprecation period. New Rails 5 apps generate an initializer file called `callback_terminator.rb` which sets the value to `false`. This file is *not* added when running `rails app:update`, so returning `false` will still work on older apps ported to Rails 5 and display a deprecation warning to prompt users to update their code. +* `ActiveSupport.halt_callback_chains_on_return_false` specifies whether Active Record and Active Model callback chains can be halted by returning `false` in a 'before' callback. When set to `false`, callback chains are halted only when explicitly done so with `throw(:abort)`. When set to `true`, callback chains are halted when a callback returns `false` (the previous behavior before Rails 5) and a deprecation warning is given. Defaults to `true` during the deprecation period. New Rails 5 apps generate an initializer file called `new_framework_defaults.rb` which sets the value to `false`. This file is *not* added when running `rails app:update`, so returning `false` will still work on older apps ported to Rails 5 and display a deprecation warning to prompt users to update their code. * `ActiveSupport::Logger.silencer` is set to `false` to disable the ability to silence logging in a block. The default is `true`. @@ -900,7 +955,7 @@ Rails will now prepend "/app1" when generating links. #### Using Passenger -Passenger makes it easy to run your application in a subdirectory. You can find the relevant configuration in the [Passenger manual](http://www.modrails.com/documentation/Users%20guide%20Apache.html#deploying_rails_to_sub_uri). +Passenger makes it easy to run your application in a subdirectory. You can find the relevant configuration in the [Passenger manual](https://www.phusionpassenger.com/library/deploy/apache/deploy/ruby/#deploying-an-app-to-a-sub-uri-or-subdirectory). #### Using a Reverse Proxy @@ -1063,7 +1118,7 @@ Below is a comprehensive list of all the initializers found in Rails in the orde * `action_controller.compile_config_methods`: Initializes methods for the config settings specified so that they are quicker to access. -* `active_record.initialize_timezone`: Sets `ActiveRecord::Base.time_zone_aware_attributes` to true, as well as setting `ActiveRecord::Base.default_timezone` to UTC. When attributes are read from the database, they will be converted into the time zone specified by `Time.zone`. +* `active_record.initialize_timezone`: Sets `ActiveRecord::Base.time_zone_aware_attributes` to `true`, as well as setting `ActiveRecord::Base.default_timezone` to UTC. When attributes are read from the database, they will be converted into the time zone specified by `Time.zone`. * `active_record.logger`: Sets `ActiveRecord::Base.logger` - if it's not already set - to `Rails.logger`. @@ -1122,13 +1177,13 @@ Below is a comprehensive list of all the initializers found in Rails in the orde * `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.eager_load` is true, runs the `config.before_eager_load` hooks and then calls `eager_load!` which will load all `config.eager_load_namespaces`. +* `eager_load!`: If `config.eager_load` is `true`, runs the `config.before_eager_load` hooks and then calls `eager_load!` which will load all `config.eager_load_namespaces`. * `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.eager_load` is set to true. +* `disable_dependency_loading`: Disables the automatic dependency loading if the `config.eager_load` is set to `true`. Database pooling ---------------- @@ -1143,7 +1198,7 @@ development: timeout: 5000 ``` -Since the connection pooling is handled inside of Active Record by default, all application servers (Thin, mongrel, Unicorn etc.) should behave the same. The database connection pool is initially empty. As demand for connections increases it will create them until it reaches the connection pool limit. +Since the connection pooling is handled inside of Active Record by default, all application servers (Thin, Puma, Unicorn etc.) should behave the same. The database connection pool is initially empty. As demand for connections increases it will create them until it reaches the connection pool limit. Any one request will check out a connection the first time it requires access to the database. At the end of the request it will check the connection back in. This means that the additional connection slot will be available again for the next request in the queue. @@ -1164,21 +1219,25 @@ NOTE. If you are running in a multi-threaded environment, there could be a chanc Custom configuration -------------------- -You can configure your own code through the Rails configuration object with custom configuration. It works like this: +You can configure your own code through the Rails configuration object with +custom configuration under either the `config.x` namespace, or `config` directly. +The key difference between these two is that you should be using `config.x` if you +are defining _nested_ configuration (ex: `config.x.nested.nested.hi`), and just +`config` for _single level_ configuration (ex: `config.hello`). ```ruby - config.payment_processing.schedule = :daily - config.payment_processing.retries = 3 + config.x.payment_processing.schedule = :daily + config.x.payment_processing.retries = 3 config.super_debugger = true ``` These configuration points are then available through the configuration object: ```ruby - Rails.configuration.payment_processing.schedule # => :daily - Rails.configuration.payment_processing.retries # => 3 - Rails.configuration.super_debugger # => true - Rails.configuration.super_debugger.not_set # => nil + Rails.configuration.x.payment_processing.schedule # => :daily + Rails.configuration.x.payment_processing.retries # => 3 + Rails.configuration.x.payment_processing.not_set # => nil + Rails.configuration.super_debugger # => true ``` You can also use `Rails::Application.config_for` to load whole configuration files: @@ -1233,11 +1292,11 @@ Evented File System Monitor If the [listen gem](https://github.com/guard/listen) is loaded Rails uses an evented file system monitor to detect changes when `config.cache_classes` is -false: +`false`: ```ruby group :development do - gem 'listen', '~> 3.0.4' + gem 'listen', '>= 3.0.5', '< 3.2' end ``` diff --git a/guides/source/contributing_to_ruby_on_rails.md b/guides/source/contributing_to_ruby_on_rails.md index 12d0280116..4f938f5deb 100644 --- a/guides/source/contributing_to_ruby_on_rails.md +++ b/guides/source/contributing_to_ruby_on_rails.md @@ -25,7 +25,7 @@ Reporting an Issue Ruby on Rails uses [GitHub Issue Tracking](https://github.com/rails/rails/issues) to track issues (primarily bugs and contributions of new code). If you've found a bug in Ruby on Rails, this is the place to start. You'll need to create a (free) GitHub account in order to submit an issue, to comment on them or to create pull requests. -NOTE: Bugs in the most recent released version of Ruby on Rails are likely to get the most attention. Also, the Rails core team is always interested in feedback from those who can take the time to test _edge Rails_ (the code for the version of Rails that is currently under development). Later in this guide you'll find out how to get edge Rails for testing. +NOTE: Bugs in the most recent released version of Ruby on Rails are likely to get the most attention. Also, the Rails core team is always interested in feedback from those who can take the time to test _edge Rails_ (the code for the version of Rails that is currently under development). Later in this guide, you'll find out how to get edge Rails for testing. ### Creating a Bug Report @@ -40,7 +40,9 @@ Then, don't get your hopes up! Unless you have a "Code Red, Mission Critical, th Having a way to reproduce your issue will be very helpful for others to help confirm, investigate and ultimately fix your issue. You can do this by providing an executable test case. To make this process easier, we have prepared several bug report templates for you to use as a starting point: * Template for Active Record (models, database) issues: [gem](https://github.com/rails/rails/blob/master/guides/bug_report_templates/active_record_gem.rb) / [master](https://github.com/rails/rails/blob/master/guides/bug_report_templates/active_record_master.rb) +* Template for testing Active Record (migration) issues: [gem](https://github.com/rails/rails/blob/master/guides/bug_report_templates/active_record_migrations_gem.rb) / [master](https://github.com/rails/rails/blob/master/guides/bug_report_templates/active_record_migrations_master.rb) * Template for Action Pack (controllers, routing) issues: [gem](https://github.com/rails/rails/blob/master/guides/bug_report_templates/action_controller_gem.rb) / [master](https://github.com/rails/rails/blob/master/guides/bug_report_templates/action_controller_master.rb) +* Template for Active Job issues: [gem](https://github.com/rails/rails/blob/master/guides/bug_report_templates/active_job_gem.rb) / [master](https://github.com/rails/rails/blob/master/guides/bug_report_templates/active_job_master.rb) * Generic template for other issues: [gem](https://github.com/rails/rails/blob/master/guides/bug_report_templates/generic_gem.rb) / [master](https://github.com/rails/rails/blob/master/guides/bug_report_templates/generic_master.rb) These templates include the boilerplate code to set up a test case against either a released version of Rails (`*_gem.rb`) or edge Rails (`*_master.rb`). @@ -58,7 +60,7 @@ WARNING: Please do not report security vulnerabilities with public GitHub issue Please don't put "feature request" items into GitHub Issues. If there's a new feature that you want to see added to Ruby on Rails, you'll need to write the code yourself - or convince someone else to partner with you to write the code. -Later in this guide you'll find detailed instructions for proposing a patch to +Later in this guide, you'll find detailed instructions for proposing a patch to Ruby on Rails. If you enter a wish list item in GitHub Issues with no code, you can expect it to be marked "invalid" as soon as it's reviewed. @@ -130,11 +132,11 @@ learn about Ruby on Rails, and the API, which serves as a reference. You can help improve the Rails guides by making them more coherent, consistent or readable, adding missing information, correcting factual errors, fixing typos, or bringing them up to date with the latest edge Rails. -You can either open a pull request to [Rails](http://github.com/rails/rails) or -ask the [Rails core team](http://rubyonrails.org/core) for commit access on +You can either open a pull request to [Rails](https://github.com/rails/rails) or +ask the [Rails core team](http://rubyonrails.org/community/#core) for commit access on docrails if you contribute regularly. Please do not open pull requests in docrails, if you'd like to get feedback on your -change, ask for it in [Rails](http://github.com/rails/rails) instead. +change, ask for it in [Rails](https://github.com/rails/rails) instead. Docrails is merged with master regularly, so you are effectively editing the Ruby on Rails documentation. @@ -174,8 +176,8 @@ Translation efforts we know about (various versions): * **Italian**: [https://github.com/rixlabs/docrails](https://github.com/rixlabs/docrails) * **Spanish**: [http://wiki.github.com/gramos/docrails](http://wiki.github.com/gramos/docrails) -* **Polish**: [http://github.com/apohllo/docrails/tree/master](http://github.com/apohllo/docrails/tree/master) -* **French** : [http://github.com/railsfrance/docrails](http://github.com/railsfrance/docrails) +* **Polish**: [https://github.com/apohllo/docrails/tree/master](https://github.com/apohllo/docrails/tree/master) +* **French** : [https://github.com/railsfrance/docrails](https://github.com/railsfrance/docrails) * **Czech** : [https://github.com/rubyonrails-cz/docrails/tree/czech](https://github.com/rubyonrails-cz/docrails/tree/czech) * **Turkish** : [https://github.com/ujk/docrails/tree/master](https://github.com/ujk/docrails/tree/master) * **Korean** : [https://github.com/rorlakr/rails-guides](https://github.com/rorlakr/rails-guides) @@ -189,7 +191,7 @@ Contributing to the Rails Code ### Setting Up a Development Environment -To move on from submitting bugs to helping resolve existing issues or contributing your own code to Ruby on Rails, you _must_ be able to run its test suite. In this section of the guide you'll learn how to setup the tests on your own computer. +To move on from submitting bugs to helping resolve existing issues or contributing your own code to Ruby on Rails, you _must_ be able to run its test suite. In this section of the guide, you'll learn how to setup the tests on your own computer. #### The Easy Way @@ -299,9 +301,9 @@ Please see the benchmark/ips [README](https://github.com/evanphx/benchmark-ips/b ### Running Tests It is not customary in Rails to run the full test suite before pushing -changes. The railties test suite in particular takes a long time, and even -more if the source code is mounted in `/vagrant` as happens in the recommended -workflow with the [rails-dev-box](https://github.com/rails/rails-dev-box). +changes. The railties test suite in particular takes a long time, and takes an +especially long time if the source code is mounted in `/vagrant` as happens in +the recommended workflow with the [rails-dev-box](https://github.com/rails/rails-dev-box). As a compromise, test what your code obviously affects, and if the change is not in railties, run the whole test suite of the affected component. If all @@ -662,7 +664,7 @@ Changes that are merged into master are intended for the next major release of R For simple fixes, the easiest way to backport your changes is to [extract a diff from your changes in master and apply them to the target branch](http://ariejan.net/2009/10/26/how-to-create-and-apply-a-patch-with-git). -First make sure your changes are the only difference between your current branch and master: +First, make sure your changes are the only difference between your current branch and master: ```bash $ git log master..HEAD @@ -677,7 +679,7 @@ $ git format-patch master --stdout > ~/my_changes.patch Switch over to the target branch and apply your changes: ```bash -$ git checkout -b my_backport_branch 3-2-stable +$ git checkout -b my_backport_branch 4-2-stable $ git apply ~/my_changes.patch ``` diff --git a/guides/source/credits.html.erb b/guides/source/credits.html.erb index 1d995581fa..5adbd12ac0 100644 --- a/guides/source/credits.html.erb +++ b/guides/source/credits.html.erb @@ -22,7 +22,7 @@ Ruby on Rails Guides: Credits <h3 class="section">Rails Guides Designers</h3> <%= author('Jason Zimdars', 'jz') do %> - Jason Zimdars is an experienced creative director and web designer who has lead UI and UX design for numerous websites and web applications. You can see more of his design and writing at <a href="http://www.thinkcage.com/">Thinkcage.com</a> or follow him on <a href="http://twitter.com/JZ">Twitter</a>. + Jason Zimdars is an experienced creative director and web designer who has lead UI and UX design for numerous websites and web applications. You can see more of his design and writing at <a href="http://www.thinkcage.com/">Thinkcage.com</a> or follow him on <a href="https://twitter.com/jasonzimdars">Twitter</a>. <% end %> <h3 class="section">Rails Guides Authors</h3> @@ -32,7 +32,7 @@ Ruby on Rails Guides: Credits <% end %> <%= author('Oscar Del Ben', 'oscardelben', 'oscardelben.jpg') do %> -Oscar Del Ben is a software engineer at <a href="http://www.wildfireapp.com/">Wildfire</a>. He's a regular open source contributor (<a href="https://github.com/oscardelben">GitHub account</a>) and tweets regularly at <a href="https://twitter.com/oscardelben">@oscardelben</a>. +Oscar Del Ben is a software engineer at <a href="http://www.businessinsider.com/google-buys-wildfire-2012-8">Wildfire</a>. He's a regular open source contributor (<a href="https://github.com/oscardelben">GitHub account</a>) and tweets regularly at <a href="https://twitter.com/oscardelben">@oscardelben</a>. <% end %> <%= author('Frederick Cheung', 'fcheung') do %> @@ -64,7 +64,7 @@ Oscar Del Ben is a software engineer at <a href="http://www.wildfireapp.com/">Wi <% end %> <%= author('Pratik Naik', 'lifo') do %> - Pratik Naik is a Ruby on Rails developer at <a href="https://basecamp.com/">Basecamp</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 a semi-active <a href="http://twitter.com/lifo">twitter account</a>. + Pratik Naik is a Ruby on Rails developer at <a href="https://basecamp.com/">Basecamp</a> and maintains a blog at <a href="http://m.onkey.org">has_many :bugs, :through => :rails</a>. He also has a semi-active <a href="http://twitter.com/lifo">twitter account</a>. <% end %> <%= author('Emilio Tagua', 'miloops') do %> diff --git a/guides/source/debugging_rails_applications.md b/guides/source/debugging_rails_applications.md index f0d0f9753a..df3003a6a8 100644 --- a/guides/source/debugging_rails_applications.md +++ b/guides/source/debugging_rails_applications.md @@ -946,16 +946,10 @@ development that will end your tailing of development.log. Have all information about your Rails app requests in the browser — in the Developer Tools panel. Provides insight to db/rendering/total times, parameter list, rendered views and more. +* [Pry](https://github.com/pry/pry) An IRB alternative and runtime developer console. References ---------- -* [ruby-debug Homepage](http://bashdb.sourceforge.net/ruby-debug/home-page.html) -* [debugger Homepage](https://github.com/cldwalker/debugger) * [byebug Homepage](https://github.com/deivid-rodriguez/byebug) * [web-console Homepage](https://github.com/rails/web-console) -* [Article: Debugging a Rails application with ruby-debug](http://www.sitepoint.com/debug-rails-app-ruby-debug/) -* [Ryan Bates' debugging ruby (revised) screencast](http://railscasts.com/episodes/54-debugging-ruby-revised) -* [Ryan Bates' stack trace screencast](http://railscasts.com/episodes/24-the-stack-trace) -* [Ryan Bates' logger screencast](http://railscasts.com/episodes/56-the-logger) -* [Debugging with ruby-debug](http://bashdb.sourceforge.net/ruby-debug.html) diff --git a/guides/source/development_dependencies_install.md b/guides/source/development_dependencies_install.md index cc24e6f666..20cd34c182 100644 --- a/guides/source/development_dependencies_install.md +++ b/guides/source/development_dependencies_install.md @@ -288,3 +288,46 @@ NOTE: Using the rake task to create the test databases ensures they have the cor NOTE: You'll see the following warning (or localized warning) during activating HStore extension in PostgreSQL 9.1.x or earlier: "WARNING: => is deprecated as an operator". If you're using another database, check the file `activerecord/test/config.yml` or `activerecord/test/config.example.yml` for default connection information. You can edit `activerecord/test/config.yml` to provide different credentials on your machine if you must, but obviously you should not push any such changes back to Rails. + +### Action Cable Setup + +Action Cable uses Redis as its default subscriptions adapter ([read more](action_cable_overview.html#broadcasting)). Thus, in order to have Action Cable's tests passing you need to install and have Redis running. + +#### Install Redis From Source + +Redis' documentation discourage installations with package managers as those are usually outdated. Installing from source and bringing the server up is straight forward and well documented on [Redis' documentation](http://redis.io/download#installation). + +#### Install Redis From Package Manager + +On OS X, you can run: + +```bash +$ brew install redis +``` + +Follow the instructions given by Homebrew to start these. + +In Ubuntu just run: + +```bash +$ sudo apt-get install redis-server +``` + +On Fedora or CentOS (requires EPEL enabled), just run: + +```bash +$ sudo yum install redis +``` + +If you are running Arch Linux just run: + +```bash +$ sudo pacman -S redis +$ sudo systemctl start redis +``` + +FreeBSD users will have to run the following: + +```bash +# portmaster databases/redis +``` diff --git a/guides/source/documents.yaml b/guides/source/documents.yaml index 03943d0f25..2925fb4b58 100644 --- a/guides/source/documents.yaml +++ b/guides/source/documents.yaml @@ -85,9 +85,8 @@ description: This guide provides you with all you need to get started creating, enqueuing, and executing background jobs. - name: Testing Rails Applications - work_in_progress: true url: testing.html - description: This is a rather comprehensive guide to the various testing facilities in Rails. It covers everything from 'What is a test?' to the testing APIs. Enjoy. + description: This is a rather comprehensive guide to the various testing facilities in Rails. It covers everything from 'What is a test?' to Integration Testing. Enjoy. - name: Securing Rails Applications url: security.html @@ -101,9 +100,9 @@ url: configuring.html description: This guide covers the basic configuration settings for a Rails application. - - name: Rails Command Line Tools and Rake Tasks + name: The Rails Command Line url: command_line.html - description: This guide covers the command line tools and rake tasks provided by Rails. + description: This guide covers the command line tools provided by Rails. - name: Asset Pipeline url: asset_pipeline.html @@ -139,6 +138,10 @@ name: Using Rails for API-only Applications url: api_app.html description: This guide explains how to effectively use Rails to develop a JSON API application. + - + name: Action Cable Overview + url: action_cable_overview.html + description: This guide explains how Action Cable works, and how to use WebSockets to create real-time features. - name: Extending Rails @@ -191,6 +194,10 @@ url: upgrading_ruby_on_rails.html description: This guide helps in upgrading applications to latest Ruby on Rails versions. - + name: Ruby on Rails 5.0 Release Notes + url: 5_0_release_notes.html + description: Release notes for Rails 5.0. + - name: Ruby on Rails 4.2 Release Notes url: 4_2_release_notes.html description: Release notes for Rails 4.2. diff --git a/guides/source/engines.md b/guides/source/engines.md index eafac4828c..0020112a1c 100644 --- a/guides/source/engines.md +++ b/guides/source/engines.md @@ -11,9 +11,9 @@ After reading this guide, you will know: * 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. +* How to build features for the engine. +* How to hook the engine into an application. +* How to override engine functionality in the application. -------------------------------------------------------------------------------- @@ -25,7 +25,7 @@ their host applications. A Rails application is actually just a "supercharged" engine, with the `Rails::Application` class inheriting a lot of its behavior from `Rails::Engine`. -Therefore, engines and applications can be thought of almost the same thing, +Therefore, engines and applications can be thought of as almost the same thing, just with subtle differences, as you'll see throughout this guide. Engines and applications also share a common structure. @@ -46,7 +46,7 @@ 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 -`articles_path` and use an engine also that provides a path also called +`articles_path` and use an engine that also provides a path also called `articles_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. @@ -184,7 +184,7 @@ end By inheriting from the `Rails::Engine` class, this gem notifies Rails that there's an engine at the specified path, and will correctly mount the engine inside the application, performing tasks such as adding the `app` directory of -the engine to the load path for models, mailers, controllers and views. +the engine to the load path for models, mailers, controllers, and views. The `isolate_namespace` method here deserves special notice. This call is responsible for isolating the controllers, models, routes and other things into @@ -1364,7 +1364,7 @@ You can define assets for precompilation in `engine.rb`: ```ruby initializer "blorgh.assets.precompile" do |app| - app.config.assets.precompile += %w(admin.css admin.js) + app.config.assets.precompile += %w( admin.js admin.css ) end ``` diff --git a/guides/source/getting_started.md b/guides/source/getting_started.md index 13b4763b6f..31d5c4f71d 100644 --- a/guides/source/getting_started.md +++ b/guides/source/getting_started.md @@ -68,7 +68,7 @@ The Rails philosophy includes two major guiding principles: again, our code is more maintainable, more extensible, and less buggy. * **Convention Over Configuration:** Rails has opinions about the best way to do many things in a web application, and defaults to this set of conventions, rather than - require that you specify every minutiae through endless configuration files. + require that you specify minutiae through endless configuration files. Creating a New Rails Project ---------------------------- @@ -93,7 +93,7 @@ current version of Ruby installed: ```bash $ ruby -v -ruby 2.3.0p0 +ruby 2.3.1p112 ``` TIP: A number of tools exist to help you quickly install Ruby and Ruby @@ -148,6 +148,10 @@ This will create a Rails application called Blog in a `blog` directory and install the gem dependencies that are already mentioned in `Gemfile` using `bundle install`. +NOTE: If you're using Windows Subsystem for Linux then there are currently some +limitations on file system notifications that mean you should disable the `spring` +and `listen` gems which you can do by running `rails new blog --skip-spring --skip-listen`. + TIP: You can see all of the command line options that the Rails application builder accepts by running `rails new -h`. @@ -164,7 +168,7 @@ of the files and folders that Rails created by default: | File/Folder | Purpose | | ----------- | ------- | -|app/|Contains the controllers, models, views, helpers, mailers and assets for your application. You'll focus on this folder for the remainder of this guide.| +|app/|Contains the controllers, models, views, helpers, mailers, channels, jobs and assets for your application. You'll focus on this folder for the remainder of this guide.| |bin/|Contains the rails script that starts your app and can contain other scripts you use to setup, update, deploy or run your application.| |config/|Configure your application's routes, database, and more. This is covered in more detail in [Configuring Rails Applications](configuring.html).| |config.ru|Rack configuration for Rack based servers used to start the application.| @@ -178,6 +182,7 @@ of the files and folders that Rails created by default: |test/|Unit tests, fixtures, and other test apparatus. These are covered in [Testing Rails Applications](testing.html).| |tmp/|Temporary files (like cache and pid files).| |vendor/|A place for all third-party code. In a typical Rails application this includes vendored gems.| +|.gitignore|This file tells git which files (or patterns) it should ignore. See [Github - Ignoring files](https://help.github.com/articles/ignoring-files) for more info about ignoring files. Hello, Rails! ------------- @@ -263,6 +268,7 @@ invoke test_unit create test/controllers/welcome_controller_test.rb invoke helper create app/helpers/welcome_helper.rb +invoke test_unit invoke assets invoke coffee create app/assets/javascripts/welcome.coffee @@ -298,9 +304,6 @@ Rails.application.routes.draw do get 'welcome/index' # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html - - # Serve websocket cable requests in-process - # mount ActionCable.server => '/cable' end ``` @@ -315,10 +318,6 @@ It should look something like the following: Rails.application.routes.draw do get 'welcome/index' - # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html - - # Serve websocket cable requests in-process - # mount ActionCable.server => '/cable' root 'welcome#index' end ``` @@ -355,6 +354,7 @@ resource. You need to add the _article resource_ to the ```ruby Rails.application.routes.draw do + get 'welcome/index' resources :articles @@ -390,7 +390,7 @@ create and read. The form for doing this will look like this: It will look a little basic for now, but that's ok. We'll look at improving the styling for it afterwards. -### Laying down the ground work +### Laying down the groundwork Firstly, you need a place within the application to create a new article. A great place for that would be at `/articles/new`. With the route already @@ -461,7 +461,7 @@ available, Rails will raise an exception. In the above image, the bottom line has been truncated. Let's see what the full error message looks like: ->Missing template articles/new, application/new with {locale:[:en], formats:[:html], handlers:[:erb, :builder, :coffee]}. Searched in: * "/path/to/blog/app/views" +>ArticlesController#new is missing a template for this request format and variant. request.formats: ["text/html"] request.variant: [] NOTE! For XHR/Ajax or API requests, this action would normally respond with 204 No Content: an empty white screen. Since you're loading it in a web browser, we assume that you expected to actually render a template, not… nothing, so we're showing an error to be extra-clear. If you expect 204 No Content, carry on. That's what you'll get from an XHR or API request. Give it a shot. That's quite a lot of text! Let's quickly go through and understand what each part of it means. @@ -471,27 +471,24 @@ The first part identifies which template is missing. In this case, it's the then it will attempt to load a template called `application/new`. It looks for one here because the `ArticlesController` inherits from `ApplicationController`. -The next part of the message contains a hash. The `:locale` key in this hash -simply indicates which spoken language template should be retrieved. By default, -this is the English - or "en" - template. The next key, `:formats` specifies the -format of template to be served in response. The default format is `:html`, and -so Rails is looking for an HTML template. The final key, `:handlers`, is telling -us what _template handlers_ could be used to render our template. `:erb` is most -commonly used for HTML templates, `:builder` is used for XML templates, and -`:coffee` uses CoffeeScript to build JavaScript templates. - -The final part of this message tells us where Rails has looked for the templates. -Templates within a basic Rails application like this are kept in a single -location, but in more complex applications it could be many different paths. +The next part of the message contains `request.formats` which specifies +the format of template to be served in response. It is set to `text/html` as we +requested this page via browser, so Rails is looking for an HTML template. +`request.variants` specifies what kind of physical devices would be served by +the response and helps Rails determine which template to use in the response. +It is empty because no information has been provided. The simplest template that would work in this case would be one located at `app/views/articles/new.html.erb`. The extension of this file name is important: the first extension is the _format_ of the template, and the second extension -is the _handler_ that will be used. Rails is attempting to find a template -called `articles/new` within `app/views` for the application. The format for -this template can only be `html` and the handler must be one of `erb`, -`builder` or `coffee`. Because you want to create a new HTML form, you will be -using the `ERB` language which is designed to embed Ruby in HTML. +is the _handler_ that will be used to render the template. Rails is attempting +to find a template called `articles/new` within `app/views` for the +application. The format for this template can only be `html` and the default +handler for HTML is `erb`. Rails uses other handlers for other formats. +`builder` handler is used to build XML templates and `coffee` handler uses +CoffeeScript to build JavaScript templates. Since you want to create a new +HTML form, you will be using the `ERB` language which is designed to embed Ruby +in HTML. Therefore the file should be called `articles/new.html.erb` and needs to be located inside the `app/views` directory of the application. @@ -532,7 +529,7 @@ method called `form_for`. To use this method, add this code into <% end %> ``` -If you refresh the page now, you'll see the exact same form as in the example. +If you refresh the page now, you'll see the exact same form from our example above. Building forms in Rails is really just that easy! When you call `form_for`, you pass it an identifying object for this @@ -610,9 +607,11 @@ class ArticlesController < ApplicationController end ``` -If you re-submit the form now, you'll see another familiar error: a template is -missing. That's ok, we can ignore that for now. What the `create` action should -be doing is saving our new article to the database. +If you re-submit the form now, you may not see any change on the page. Don't worry! +This is because Rails by default returns `204 No Content` response for an action if +we don't specify what the response should be. We just added the `create` action +but didn't specify anything about how the response should be. In this case, the +`create` action should save our new article to the database. When a form is submitted, the fields of the form are sent to Rails as _parameters_. These parameters can then be referenced inside the controller @@ -634,8 +633,7 @@ this situation, the only parameters that matter are the ones from the form. TIP: Ensure you have a firm grasp of the `params` method, as you'll use it fairly regularly. Let's consider an example URL: **http://www.example.com/?username=dhh&email=dhh@email.com**. In this URL, `params[:username]` would equal "dhh" and `params[:email]` would equal "dhh@email.com". -If you re-submit the form one more time you'll now no longer get the missing -template error. Instead, you'll see something that looks like the following: +If you re-submit the form one more time, you'll see something that looks like the following: ```ruby <ActionController::Parameters {"title"=>"First Article!", "text"=>"This is my first article."} permitted: false> @@ -702,8 +700,8 @@ in case you want to reverse it later. When you run this migration it will create an `articles` table with one string column and a text column. It also creates two timestamp fields to allow Rails to track article creation and update times. -TIP: For more information about migrations, refer to [Rails Database Migrations] -(migrations.html). +TIP: For more information about migrations, refer to [Active Record Migrations] +(active_record_migrations.html). At this point, you can use a bin/rails command to run the migration: @@ -1157,7 +1155,7 @@ new articles. Create a file called `app/views/articles/edit.html.erb` and make it look as follows: ```html+erb -<h1>Editing article</h1> +<h1>Edit article</h1> <%= form_for :article, url: article_path(@article), method: :patch do |f| %> diff --git a/guides/source/i18n.md b/guides/source/i18n.md index 0edfa072f8..887774961a 100644 --- a/guides/source/i18n.md +++ b/guides/source/i18n.md @@ -109,12 +109,11 @@ The **translations load path** (`I18n.load_path`) is an array of paths to files NOTE: The backend lazy-loads these translations when a translation is looked up for the first time. This backend can be swapped with something else even after translations have already been announced. -The default `config/application.rb` file has instructions on how to add locales from another directory and how to set a different default locale. +You can change the default locale as well as configure the translations load paths in `config/application.rb` as follows: ```ruby -# 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 + config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s] + config.i18n.default_locale = :de ``` The load path must be specified before any translations are looked up. To change the default locale from an initializer instead of `config/application.rb`: @@ -867,7 +866,7 @@ This way you can provide special translations for various error messages at diff #### Error Message Interpolation -The translated model name, translated attribute name, and value are always available for interpolation. +The translated model name, translated attribute name, and value are always available for interpolation as `model`, `attribute` and `value` respectively. So, for example, instead of the default error message `"cannot be blank"` you could use the attribute name like this : `"Please fill in your %{attribute}"`. @@ -889,6 +888,7 @@ So, for example, instead of the default error message `"cannot be blank"` you co | inclusion | - | :inclusion | - | | exclusion | - | :exclusion | - | | associated | - | :invalid | - | +| non-optional association | - | :required | - | | numericality | - | :not_a_number | - | | numericality | :greater_than | :greater_than | count | | numericality | :greater_than_or_equal_to | :greater_than_or_equal_to | count | @@ -1121,9 +1121,9 @@ Contributing to Rails I18n I18n support in Ruby on Rails was introduced in the release 2.2 and is still evolving. The project follows the good Ruby on Rails development tradition of evolving solutions in gems and real applications first, and only then cherry-picking the best-of-breed of most widely useful features for inclusion in the core. -Thus we encourage everybody to experiment with new ideas and features in gems or other libraries and make them available to the community. (Don't forget to announce your work on our [mailing list](http://groups.google.com/group/rails-i18n!)) +Thus we encourage everybody to experiment with new ideas and features in gems or other libraries and make them available to the community. (Don't forget to announce your work on our [mailing list](http://groups.google.com/group/rails-i18n)!) -If you find your own locale (language) missing from our [example translations data](https://github.com/svenfuchs/rails-i18n/tree/master/rails/locale) repository for Ruby on Rails, please [_fork_](https://github.com/guides/fork-a-project-and-submit-your-modifications) the repository, add your data and send a [pull request](https://github.com/guides/pull-requests). +If you find your own locale (language) missing from our [example translations data](https://github.com/svenfuchs/rails-i18n/tree/master/rails/locale) repository for Ruby on Rails, please [_fork_](https://github.com/guides/fork-a-project-and-submit-your-modifications) the repository, add your data and send a [pull request](https://help.github.com/articles/about-pull-requests/). Resources diff --git a/guides/source/initialization.md b/guides/source/initialization.md index 89e5346d86..57ed35d0d8 100644 --- a/guides/source/initialization.md +++ b/guides/source/initialization.md @@ -16,7 +16,7 @@ After reading this guide, you will know: -------------------------------------------------------------------------------- This guide goes through every method call that is -required to boot up the Ruby on Rails stack for a default Rails 4 +required to boot up the Ruby on Rails stack for a default Rails application, explaining each part in detail along the way. For this guide, we will be focusing on what happens when you execute `rails server` to boot your app. @@ -318,7 +318,7 @@ def parse!(args) args, options = args.dup, {} opt_parser = OptionParser.new do |opts| - opts.banner = "Usage: rails server [mongrel, thin, etc] [options]" + opts.banner = "Usage: rails server [puma, thin, etc] [options]" opts.on("-p", "--port=port", Integer, "Runs Rails on the specified port.", "Default: 3000") { |v| options[:Port] = v } ... @@ -464,7 +464,7 @@ The `options[:config]` value defaults to `config.ru` which contains this: ```ruby # This file is used by Rack-based servers to start the application. -require ::File.expand_path('../config/environment', __FILE__) +require_relative 'config/environment' run <%= app_const %> ``` @@ -485,7 +485,7 @@ end The `initialize` method of `Rack::Builder` 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 `require` line for `config/environment.rb` in `config.ru` is the first to run: ```ruby -require ::File.expand_path('../config/environment', __FILE__) +require_relative 'config/environment' ``` ### `config/environment.rb` @@ -495,7 +495,7 @@ This file is the common file required by `config.ru` (`rails server`) and Passen This file begins with requiring `config/application.rb`: ```ruby -require File.expand_path('../application', __FILE__) +require_relative 'application' ``` ### `config/application.rb` @@ -503,7 +503,7 @@ require File.expand_path('../application', __FILE__) This file requires `config/boot.rb`: ```ruby -require File.expand_path('../boot', __FILE__) +require_relative 'boot' ``` But only if it hasn't been required before, which would be the case in `rails server` @@ -663,7 +663,7 @@ DEFAULT_OPTIONS = { } def self.run(app, options = {}) - options = DEFAULT_OPTIONS.merge(options) + options = DEFAULT_OPTIONS.merge(options) if options[:Verbose] app = Rack::CommonLogger.new(app, STDOUT) diff --git a/guides/source/layout.html.erb b/guides/source/layout.html.erb index 6db76b528e..943fd3fd7f 100644 --- a/guides/source/layout.html.erb +++ b/guides/source/layout.html.erb @@ -111,7 +111,7 @@ <%= 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' %>. + documentation is very welcome in the <%= link_to 'rubyonrails-docs mailing list', 'https://groups.google.com/forum/#!forum/rubyonrails-docs' %>. </p> </div> </div> @@ -127,13 +127,11 @@ <script type="text/javascript" src="javascripts/jquery.min.js"></script> <script type="text/javascript" src="javascripts/responsive-tables.js"></script> <script type="text/javascript" src="javascripts/guides.js"></script> - <script type="text/javascript" src="javascripts/syntaxhighlighter/shCore.js"></script> - <script type="text/javascript" src="javascripts/syntaxhighlighter/shBrushRuby.js"></script> - <script type="text/javascript" src="javascripts/syntaxhighlighter/shBrushXml.js"></script> - <script type="text/javascript" src="javascripts/syntaxhighlighter/shBrushSql.js"></script> - <script type="text/javascript" src="javascripts/syntaxhighlighter/shBrushPlain.js"></script> + <script type="text/javascript" src="javascripts/syntaxhighlighter.js"></script> <script type="text/javascript"> - SyntaxHighlighter.all(); + syntaxhighlighterConfig = { + autoLinks: false, + }; $(guidesIndex.bind); </script> </body> diff --git a/guides/source/layouts_and_rendering.md b/guides/source/layouts_and_rendering.md index 2722789c49..7e4ec5ba7e 100644 --- a/guides/source/layouts_and_rendering.md +++ b/guides/source/layouts_and_rendering.md @@ -630,6 +630,8 @@ to use in this case. redirect_back(fallback_location: root_path) ``` +NOTE: `redirect_to` and `redirect_back` do not halt and return immediately from method execution, but simply set HTTP responses. Statements occurring after them in a method will be executed. You can halt by an explicit `return` or some other halting mechanism, if needed. + #### Getting a Different Redirect Status Code 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: @@ -749,7 +751,7 @@ When Rails renders a view as a response, it does so by combining the view with t ### Asset Tag Helpers -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: +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` diff --git a/guides/source/maintenance_policy.md b/guides/source/maintenance_policy.md index f99b6ebd31..7ced3eab1c 100644 --- a/guides/source/maintenance_policy.md +++ b/guides/source/maintenance_policy.md @@ -44,7 +44,7 @@ from. In special situations, where someone from the Core Team agrees to support more series, they are included in the list of supported series. -**Currently included series:** `5.0.Z`. +**Currently included series:** `5.0.Z`, `4.2.Z`. Security Issues --------------- diff --git a/guides/source/plugins.md b/guides/source/plugins.md index 8f055f8fe3..760ff431c0 100644 --- a/guides/source/plugins.md +++ b/guides/source/plugins.md @@ -30,7 +30,7 @@ Setup ----- Currently, Rails plugins are built as gems, _gemified plugins_. They can be shared across -different rails applications using RubyGems and Bundler if desired. +different Rails applications using RubyGems and Bundler if desired. ### Generate a gemified plugin. @@ -67,7 +67,7 @@ This will tell you that everything got generated properly and you are ready to s Extending Core Classes ---------------------- -This section will explain how to add a method to String that will be available anywhere in your rails application. +This section will explain how to add a method to String that will be available anywhere in your Rails application. In this example you will add a method to String named `to_squawk`. To begin, create a new test file with a few assertions: diff --git a/guides/source/rails_application_templates.md b/guides/source/rails_application_templates.md index 3b773d84f8..3e99ee7021 100644 --- a/guides/source/rails_application_templates.md +++ b/guides/source/rails_application_templates.md @@ -15,14 +15,14 @@ After reading this guide, you will know: Usage ----- -To apply a template, you need to provide the Rails generator with the location of the template you wish to apply using the -m option. This can either be a path to a file or a URL. +To apply a template, you need to provide the Rails generator with the location of the template you wish to apply using the `-m` option. This can either be a path to a file or a URL. ```bash $ rails new blog -m ~/template.rb $ rails new blog -m http://example.com/template.rb ``` -You can use the task `app: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. +You can use the `app:template` Rake task to apply templates to an existing Rails application. The location of the template needs to be passed in via the LOCATION environment variable. Again, this can either be path to a file or a URL. ```bash $ bin/rails app:template LOCATION=~/template.rb diff --git a/guides/source/rails_on_rack.md b/guides/source/rails_on_rack.md index b712965b7f..ed935e1008 100644 --- a/guides/source/rails_on_rack.md +++ b/guides/source/rails_on_rack.md @@ -64,7 +64,7 @@ To use `rackup` instead of Rails' `rails server`, you can put the following insi ```ruby # Rails.root/config.ru -require ::File.expand_path('../config/environment', __FILE__) +require_relative 'config/environment' run Rails.application ``` @@ -104,20 +104,19 @@ For a freshly generated Rails application, this might produce something like: ```ruby use Rack::Sendfile use ActionDispatch::Static -use ActionDispatch::LoadInterlock -use #<ActiveSupport::Cache::Strategy::LocalCache::Middleware:0x000000029a0838> +use ActionDispatch::Executor +use ActiveSupport::Cache::Strategy::LocalCache::Middleware use Rack::Runtime use Rack::MethodOverride use ActionDispatch::RequestId use Rails::Rack::Logger use ActionDispatch::ShowExceptions +use WebConsole::Middleware use ActionDispatch::DebugExceptions use ActionDispatch::RemoteIp use ActionDispatch::Reloader use ActionDispatch::Callbacks use ActiveRecord::Migration::CheckPending -use ActiveRecord::ConnectionAdapters::ConnectionManagement -use ActiveRecord::QueryCache use ActionDispatch::Cookies use ActionDispatch::Session::CookieStore use ActionDispatch::Flash @@ -149,9 +148,9 @@ You can add a new middleware to the middleware stack using any of the following # Push Rack::BounceFavicon at the bottom config.middleware.use Rack::BounceFavicon -# Add Lifo::Cache after ActiveRecord::QueryCache. +# Add Lifo::Cache after ActionDispatch::Executor. # Pass { page_cache: false } argument to Lifo::Cache. -config.middleware.insert_after ActiveRecord::QueryCache, Lifo::Cache, page_cache: false +config.middleware.insert_after ActionDispatch::Executor, Lifo::Cache, page_cache: false ``` #### Swapping a Middleware @@ -219,7 +218,7 @@ Much of Action Controller's functionality is implemented as Middlewares. The fol * Sets `env["rack.multithread"]` flag to `false` and wraps the application within a Mutex. -**`ActionDispatch::LoadInterlock`** +**`ActionDispatch::Executor`** * Used for thread safe code reloading during development. @@ -267,14 +266,6 @@ Much of Action Controller's functionality is implemented as Middlewares. The fol * Checks pending migrations and raises `ActiveRecord::PendingMigrationError` if any migrations are pending. -**`ActiveRecord::ConnectionAdapters::ConnectionManagement`** - -* Cleans active connections after each request, unless the `rack.test` key in the request environment is set to `true`. - -**`ActiveRecord::QueryCache`** - -* Enables the Active Record query cache. - **`ActionDispatch::Cookies`** * Sets cookies for the request. diff --git a/guides/source/routing.md b/guides/source/routing.md index 81321c7405..937e313663 100644 --- a/guides/source/routing.md +++ b/guides/source/routing.md @@ -9,16 +9,16 @@ After reading this guide, you will know: * How to interpret the code in `config/routes.rb`. * How to construct your own routes, using either the preferred resourceful style or the `match` method. -* What parameters to expect an action to receive. +* How to declare route parameters, which are passed onto controller actions. * How to automatically create paths and URLs using route helpers. -* Advanced techniques such as constraints and Rack endpoints. +* Advanced techniques such as creating constraints and mounting Rack endpoints. -------------------------------------------------------------------------------- The Purpose of the Rails Router ------------------------------- -The Rails router recognizes URLs and dispatches them to a controller's action. It can also generate paths and URLs, avoiding the need to hardcode strings in your views. +The Rails router recognizes URLs and dispatches them to a controller's action, or to a Rack application. It can also generate paths and URLs, avoiding the need to hardcode strings in your views. ### Connecting URLs to Code @@ -553,29 +553,23 @@ In particular, simple routing makes it very easy to map legacy URLs to new Rails ### Bound Parameters -When you set up a regular route, you supply a series of symbols that Rails maps to parts of an incoming HTTP request. Two of these symbols are special: `:controller` maps to the name of a controller in your application, and `:action` maps to the name of an action within that controller. For example, consider this route: +When you set up a regular route, you supply a series of symbols that Rails maps to parts of an incoming HTTP request. For example, consider this route: ```ruby -get ':controller(/:action(/:id))' +get 'photos(/:id)', to: :display ``` -If an incoming request of `/photos/show/1` is processed by this route (because it hasn't matched any previous route in the file), then the result will be to invoke the `show` action of the `PhotosController`, and to make the final parameter `"1"` available as `params[:id]`. This route will also route the incoming request of `/photos` to `PhotosController#index`, since `:action` and `:id` are optional parameters, denoted by parentheses. +If an incoming request of `/photos/1` is processed by this route (because it hasn't matched any previous route in the file), then the result will be to invoke the `display` action of the `PhotosController`, and to make the final parameter `"1"` available as `params[:id]`. This route will also route the incoming request of `/photos` to `PhotosController#display`, since `:id` is an optional parameter, denoted by parentheses. ### Dynamic Segments -You can set up as many dynamic segments within a regular route as you like. Anything other than `:controller` or `:action` will be available to the action as part of `params`. If you set up this route: +You can set up as many dynamic segments within a regular route as you like. Any segment will be available to the action as part of `params`. If you set up this route: ```ruby -get ':controller/:action/:id/:user_id' +get 'photos/:id/:user_id', to: 'photos#show' ``` -An incoming path of `/photos/show/1/2` will be dispatched to the `show` action of the `PhotosController`. `params[:id]` will be `"1"`, and `params[:user_id]` will be `"2"`. - -NOTE: You can't use `:namespace` or `:module` with a `:controller` path segment. If you need to do this then use a constraint on :controller that matches the namespace you require. e.g: - -```ruby -get ':controller(/:action(/:id))', controller: /admin\/[^\/]+/ -``` +An incoming path of `/photos/1/2` will be dispatched to the `show` action of the `PhotosController`. `params[:id]` will be `"1"`, and `params[:user_id]` will be `"2"`. TIP: By default, dynamic segments don't accept dots - this is because the dot is used as a separator for formatted routes. If you need to use a dot within a dynamic segment, add a constraint that overrides this – for example, `id: /[^\/]+/` allows anything except a slash. @@ -584,32 +578,24 @@ TIP: By default, dynamic segments don't accept dots - this is because the dot is You can specify static segments when creating a route by not prepending a colon to a fragment: ```ruby -get ':controller/:action/:id/with_user/:user_id' +get 'photos/:id/with_user/:user_id', to: 'photos#show' ``` -This route would respond to paths such as `/photos/show/1/with_user/2`. In this case, `params` would be `{ controller: 'photos', action: 'show', id: '1', user_id: '2' }`. +This route would respond to paths such as `/photos/1/with_user/2`. In this case, `params` would be `{ controller: 'photos', action: 'show', id: '1', user_id: '2' }`. ### The Query String The `params` will also include any parameters from the query string. For example, with this route: ```ruby -get ':controller/:action/:id' +get 'photos/:id', to: 'photos#show' ``` -An incoming path of `/photos/show/1?user_id=2` will be dispatched to the `show` action of the `Photos` controller. `params` will be `{ controller: 'photos', action: 'show', id: '1', user_id: '2' }`. +An incoming path of `/photos/1?user_id=2` will be dispatched to the `show` action of the `Photos` controller. `params` will be `{ controller: 'photos', action: 'show', id: '1', user_id: '2' }`. ### Defining Defaults -You do not need to explicitly use the `:controller` and `:action` symbols within a route. You can supply them as defaults: - -```ruby -get 'photos/:id', to: 'photos#show' -``` - -With this route, Rails will match an incoming path of `/photos/12` to the `show` action of `PhotosController`. - -You can also define other defaults in a route by supplying a hash for the `:defaults` option. This even applies to parameters that you do not specify as dynamic segments. For example: +You can define defaults in a route by supplying a hash for the `:defaults` option. This even applies to parameters that you do not specify as dynamic segments. For example: ```ruby get 'photos/:id', to: 'photos#show', defaults: { format: 'jpg' } diff --git a/guides/source/security.md b/guides/source/security.md index 16c5291037..aea9728c10 100644 --- a/guides/source/security.md +++ b/guides/source/security.md @@ -41,24 +41,24 @@ NOTE: _HTTP is a stateless protocol. Sessions make it stateful._ Most applications need to keep track of certain state of a particular user. This could be the contents of a shopping basket or the user id of the currently logged in user. Without the idea of sessions, the user would have to identify, and probably authenticate, on every request. Rails will create a new session automatically if a new user accesses the application. It will load an existing session if the user has already used the application. -A session usually consists of a hash of values and a session id, usually a 32-character string, to identify the hash. Every cookie sent to the client's browser includes the session id. And the other way round: the browser will send it to the server on every request from the client. In Rails you can save and retrieve values using the session method: +A session usually consists of a hash of values and a session ID, usually a 32-character string, to identify the hash. Every cookie sent to the client's browser includes the session ID. And the other way round: the browser will send it to the server on every request from the client. In Rails you can save and retrieve values using the session method: ```ruby session[:user_id] = @current_user.id User.find(session[:user_id]) ``` -### Session id +### Session ID -NOTE: _The session id is a 32 byte long MD5 hash value._ +NOTE: _The session ID is a 32-character random hex string._ -A session id consists of the hash value of a random string. The random string is the current time, a random number between 0 and 1, the process id number of the Ruby interpreter (also basically a random number) and a constant string. Currently it is not feasible to brute-force Rails' session ids. To date MD5 is uncompromised, but there have been collisions, so it is theoretically possible to create another input text with the same hash value. But this has had no security impact to date. +The session ID is generated using `SecureRandom.hex` which generates a random hex string using platform specific methods (such as OpenSSL, /dev/urandom or Win32) for generating cryptographically secure random numbers. Currently it is not feasible to brute-force Rails' session IDs. ### Session Hijacking -WARNING: _Stealing a user's session id lets an attacker use the web application in the victim's name._ +WARNING: _Stealing a user's session ID lets an attacker use the web application in the victim's name._ -Many web applications have an authentication system: a user provides a user name and password, the web application checks them and stores the corresponding user id in the session hash. From now on, the session is valid. On every request the application will load the user, identified by the user id in the session, without the need for new authentication. The session id in the cookie identifies the session. +Many web applications have an authentication system: a user provides a user name and password, the web application checks them and stores the corresponding user id in the session hash. From now on, the session is valid. On every request the application will load the user, identified by the user id in the session, without the need for new authentication. The session ID in the cookie identifies the session. Hence, the cookie serves as temporary authentication for the web application. Anyone who seizes a cookie from someone else, may use the web application as this user - with possibly severe consequences. Here are some ways to hijack a session, and their countermeasures: @@ -89,7 +89,7 @@ This will also be a good idea, if you modify the structure of an object and old NOTE: _Rails provides several storage mechanisms for the session hashes. The most important is `ActionDispatch::Session::CookieStore`._ -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: +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: * Cookies imply a strict size limit of 4kB. This is fine as you should not store large amounts of data in a session anyway, as described before. _Storing the current user's database id in a session is usually ok_. @@ -131,22 +131,22 @@ It works like this: * The user takes the cookie from the first step (which they previously copied) and replaces the current cookie in the browser. * The user has their original credit back. -Including a nonce (a random value) in the session solves replay attacks. A nonce is valid only once, and the server has to keep track of all the valid nonces. It gets even more complicated if you have several application servers (mongrels). Storing nonces in a database table would defeat the entire purpose of CookieStore (avoiding accessing the database). +Including a nonce (a random value) in the session solves replay attacks. A nonce is valid only once, and the server has to keep track of all the valid nonces. It gets even more complicated if you have several application servers. Storing nonces in a database table would defeat the entire purpose of CookieStore (avoiding accessing the database). The best _solution against it is not to store this kind of data in a session, but in the database_. In this case store the credit in the database and the logged_in_user_id in the session. ### Session Fixation -NOTE: _Apart from stealing a user's session id, the attacker may fix a session id known to them. This is called session fixation._ +NOTE: _Apart from stealing a user's session ID, the attacker may fix a session ID known to them. This is called session fixation._  -This attack focuses on fixing a user's session id known to the attacker, and forcing the user's browser into using this id. It is therefore not necessary for the attacker to steal the session id afterwards. Here is how this attack works: +This attack focuses on fixing a user's session ID known to the attacker, and forcing the user's browser into using this ID. It is therefore not necessary for the attacker to steal the session ID afterwards. Here is how this attack works: -* The attacker creates a valid session id: They load the login page of the web application where they want to fix the session, and take the session id in the cookie from the response (see number 1 and 2 in the image). +* The attacker creates a valid session ID: They load the login page of the web application where they want to fix the session, and take the session ID in the cookie from the response (see number 1 and 2 in the image). * They maintain the session by accessing the web application periodically in order to keep an expiring session alive. -* The attacker forces the user's browser into using this session id (see number 3 in the image). As you may not change a cookie of another domain (because of the same origin policy), the attacker has to run a JavaScript from the domain of the target web application. Injecting the JavaScript code into the application by XSS accomplishes this attack. Here is an example: `<script>document.cookie="_session_id=16d5b78abb28e3d6206b60f22a03c8d9";</script>`. Read more about XSS and injection later on. -* The attacker lures the victim to the infected page with the JavaScript code. By viewing the page, the victim's browser will change the session id to the trap session id. +* The attacker forces the user's browser into using this session ID (see number 3 in the image). As you may not change a cookie of another domain (because of the same origin policy), the attacker has to run a JavaScript from the domain of the target web application. Injecting the JavaScript code into the application by XSS accomplishes this attack. Here is an example: `<script>document.cookie="_session_id=16d5b78abb28e3d6206b60f22a03c8d9";</script>`. Read more about XSS and injection later on. +* The attacker lures the victim to the infected page with the JavaScript code. By viewing the page, the victim's browser will change the session ID to the trap session ID. * As the new trap session is unused, the web application will require the user to authenticate. * From now on, the victim and the attacker will co-use the web application with the same session: The session became valid and the victim didn't notice the attack. @@ -168,7 +168,7 @@ Another countermeasure is to _save user-specific properties in the session_, ver NOTE: _Sessions that never expire extend the time-frame for attacks such as cross-site request forgery (CSRF), session hijacking and session fixation._ -One possibility is to set the expiry time-stamp of the cookie with the session id. However the client can edit cookies that are stored in the web browser so expiring sessions on the server is safer. Here is an example of how to _expire sessions in a database table_. Call `Session.sweep("20 minutes")` to expire sessions that were used longer than 20 minutes ago. +One possibility is to set the expiry time-stamp of the cookie with the session ID. However the client can edit cookies that are stored in the web browser so expiring sessions on the server is safer. Here is an example of how to _expire sessions in a database table_. Call `Session.sweep("20 minutes")` to expire sessions that were used longer than 20 minutes ago. ```ruby class Session < ApplicationRecord @@ -196,11 +196,11 @@ This attack method works by including malicious code or a link in a page that ac  -In the [session chapter](#sessions) you have learned that most Rails applications use cookie-based sessions. Either they store the session id in the cookie and have a server-side session hash, or the entire session hash is on the client-side. In either case the browser will automatically send along the cookie on every request to a domain, if it can find a cookie for that domain. The controversial point is that if the request comes from a site of a different domain, it will also send the cookie. Let's start with an example: +In the [session chapter](#sessions) you have learned that most Rails applications use cookie-based sessions. Either they store the session ID in the cookie and have a server-side session hash, or the entire session hash is on the client-side. In either case the browser will automatically send along the cookie on every request to a domain, if it can find a cookie for that domain. The controversial point is that if the request comes from a site of a different domain, it will also send the cookie. Let's start with an example: * Bob browses a message board and views a post from a hacker where there is a crafted HTML image element. The element references a command in Bob's project management application, rather than an image file: `<img src="http://www.webapp.com/project/1/destroy">` * Bob's session at `www.webapp.com` is still alive, because he didn't log out a few minutes ago. -* By viewing the post, the browser finds an image tag. It tries to load the suspected image from `www.webapp.com`. As explained before, it will also send along the cookie with the valid session id. +* By viewing the post, the browser finds an image tag. It tries to load the suspected image from `www.webapp.com`. As explained before, it will also send along the cookie with the valid session ID. * The web application at `www.webapp.com` verifies the user information in the corresponding session hash and destroys the project with the ID 1. It then returns a result page which is an unexpected result for the browser, so it will not display the image. * Bob doesn't notice the attack - but a few days later he finds out that project number one is gone. @@ -249,7 +249,7 @@ There are many other possibilities, like using a `<script>` tag to make a cross- Note: We can't distinguish a `<script>` tag's origin—whether it's a tag on your own site or on some other malicious site—so we must block all `<script>` across the board, even if it's actually a safe same-origin script served from your own site. In these cases, explicitly skip CSRF protection on actions that serve JavaScript meant for a `<script>` tag. -To protect against all other forged requests, we introduce a _required security token_ that our site knows but other sites don't know. We include the security token in requests and verify it on the server. This is a one-liner in your application controller, and is the default for newly created rails applications: +To protect against all other forged requests, we introduce a _required security token_ that our site knows but other sites don't know. We include the security token in requests and verify it on the server. This is a one-liner in your application controller, and is the default for newly created Rails applications: ```ruby protect_from_forgery with: :exception @@ -287,7 +287,7 @@ Another class of security vulnerabilities surrounds the use of redirection and f WARNING: _Redirection in a web application is an underestimated cracker tool: Not only can the attacker forward the user to a trap web site, they may also create a self-contained attack._ -Whenever the user is allowed to pass (parts of) the URL for redirection, it is possibly vulnerable. The most obvious attack would be to redirect users to a fake web application which looks and feels exactly as the original one. This so-called phishing attack works by sending an unsuspicious link in an email to the users, injecting the link by XSS in the web application or putting the link into an external site. It is unsuspicious, because the link starts with the URL to the web application and the URL to the malicious site is hidden in the redirection parameter: http://www.example.com/site/redirect?to= www.attacker.com. Here is an example of a legacy action: +Whenever the user is allowed to pass (parts of) the URL for redirection, it is possibly vulnerable. The most obvious attack would be to redirect users to a fake web application which looks and feels exactly as the original one. This so-called phishing attack works by sending an unsuspicious link in an email to the users, injecting the link by XSS in the web application or putting the link into an external site. It is unsuspicious, because the link starts with the URL to the web application and the URL to the malicious site is hidden in the redirection parameter: http://www.example.com/site/redirect?to=www.attacker.com. Here is an example of a legacy action: ```ruby def legacy @@ -567,7 +567,7 @@ 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, _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. _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. Developer tools let you review and change every form's hidden fields. _JavaScript can be used to validate user input data, but certainly not to prevent attackers from sending malicious requests with unexpected values_. The Firebug addon 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. Injection --------- @@ -677,14 +677,12 @@ INFO: _The most widespread, and one of the most devastating security vulnerabili An entry point is a vulnerable URL and its parameters where an attacker can start an attack. -The most common entry points are message posts, user comments, and guest books, but project titles, document names and search result pages have also been vulnerable - just about everywhere where the user can input data. But the input does not necessarily have to come from input boxes on web sites, it can be in any URL parameter - obvious, hidden or internal. Remember that the user may intercept any traffic. Applications, such as the [Live HTTP Headers Firefox plugin](http://livehttpheaders.mozdev.org/), or client-site proxies make it easy to change requests. +The most common entry points are message posts, user comments, and guest books, but project titles, document names and search result pages have also been vulnerable - just about everywhere where the user can input data. But the input does not necessarily have to come from input boxes on web sites, it can be in any URL parameter - obvious, hidden or internal. Remember that the user may intercept any traffic. Applications or client-site proxies make it easy to change requests. There are also other attack vectors like banner advertisements. XSS attacks work like this: An attacker injects some code, the web application saves it and displays it on a page, later presented to a victim. Most XSS examples simply display an alert box, but it is more powerful than that. XSS can steal the cookie, hijack the session, redirect the victim to a fake website, display advertisements for the benefit of the attacker, change elements on the web site to get confidential information or install malicious software through security holes in the web browser. During the second half of 2007, there were 88 vulnerabilities reported in Mozilla browsers, 22 in Safari, 18 in IE, and 12 in Opera. The [Symantec Global Internet Security threat report](http://eval.symantec.com/mktginfo/enterprise/white_papers/b-whitepaper_internet_security_threat_report_xiii_04-2008.en-us.pdf) also documented 239 browser plug-in vulnerabilities in the last six months of 2007. [Mpack](http://pandalabs.pandasecurity.com/mpack-uncovered/) is a very active and up-to-date attack framework which exploits these vulnerabilities. For criminal hackers, it is very attractive to exploit an SQL-Injection vulnerability in a web application framework and insert malicious code in every textual table column. In April 2008 more than 510,000 sites were hacked like this, among them the British government, United Nations, and many more high targets. -A relatively new, and unusual, form of entry points are banner advertisements. In earlier 2008, malicious code appeared in banner ads on popular sites, such as MySpace and Excite, according to [Trend Micro](http://blog.trendmicro.com/myspace-excite-and-blick-serve-up-malicious-banner-ads/). - #### HTML/JavaScript Injection The most common XSS language is of course the most popular client-side scripting language JavaScript, often in combination with HTML. _Escaping user input is essential_. @@ -722,7 +720,7 @@ The log files on www.attacker.com will read like this: GET http://www.attacker.com/_app_session=836c1c25278e5b321d6bea4f19cb57e2 ``` -You can mitigate these attacks (in the obvious way) by adding the **httpOnly** flag to cookies, so that document.cookie may not be read by JavaScript. Http only cookies can be used from IE v6.SP1, Firefox v2.0.0.5 and Opera 9.5. Safari is still considering, it ignores the option. But other, older browsers (such as WebTV and IE 5.5 on Mac) can actually cause the page to fail to load. Be warned that cookies [will still be visible using Ajax](https://www.owasp.org/index.php/HTTPOnly#Browsers_Supporting_HttpOnly), though. +You can mitigate these attacks (in the obvious way) by adding the **httpOnly** flag to cookies, so that document.cookie may not be read by JavaScript. HTTP only cookies can be used from IE v6.SP1, Firefox v2.0.0.5, Opera 9.5, Safari 4 and Chrome 1.0.154 onwards. But other, older browsers (such as WebTV and IE 5.5 on Mac) can actually cause the page to fail to load. Be warned that cookies [will still be visible using Ajax](https://www.owasp.org/index.php/HTTPOnly#Browsers_Supporting_HttpOnly), though. ##### Defacement @@ -967,7 +965,7 @@ When `params[:token]` is one of: `[nil]`, `[nil, nil, ...]` or `['foo', nil]` it will bypass the test for `nil`, but `IS NULL` or `IN ('foo', NULL)` where clauses still will be added to the SQL query. -To keep rails secure by default, `deep_munge` replaces some of the values with +To keep Rails secure by default, `deep_munge` replaces some of the values with `nil`. Below table shows what the parameters look like based on `JSON` sent in request: diff --git a/guides/source/testing.md b/guides/source/testing.md index 34c831c802..0ac5121b12 100644 --- a/guides/source/testing.md +++ b/guides/source/testing.md @@ -37,10 +37,12 @@ controllers/ helpers/ mailers/ test_helper.rb fixtures/ integration/ models/ ``` -The `models` directory is meant to hold tests for your models, the `controllers` directory is meant to hold tests for your controllers and the `integration` directory is meant to hold tests that involve any number of controllers interacting. There is also a directory for testing your mailers and one for testing view helpers. +The `helpers`, `mailers`, and `models` directories are meant to hold tests for view helpers, mailers, and models, respectively. The `controllers` directory is meant to hold tests for controllers, routes, and views. The `integration` directory is meant to hold tests for interactions between controllers. Fixtures are a way of organizing test data; they reside in the `fixtures` directory. +A `jobs` directory will also be created when an associated test is first generated. + The `test_helper.rb` file holds the default configuration for your tests. @@ -146,18 +148,28 @@ Let us run this newly added test (where `6` is the number of line where the test ```bash $ bin/rails test test/models/article_test.rb:6 +Run options: --seed 44656 + +# Running: + F -Finished tests in 0.044632s, 22.4054 tests/s, 22.4054 assertions/s. +Failure: +ArticleTest#test_should_not_save_article_without_title [/path/to/blog/test/models/article_test.rb:6]: +Expected true to be nil or false + + +bin/rails test test/models/article_test.rb:6 - 1) Failure: -test_should_not_save_article_without_title(ArticleTest) [test/models/article_test.rb:6]: -Failed assertion, no message given. -1 tests, 1 assertions, 1 failures, 0 errors, 0 skips + +Finished in 0.023918s, 41.8090 runs/s, 41.8090 assertions/s. + +1 runs, 1 assertions, 1 failures, 0 errors, 0 skips + ``` -In the output, `F` denotes a failure. You can see the corresponding trace shown under `1)` along with the name of the failing test. The next few lines contain the stack trace followed by a message that mentions the actual value and the expected value by the assertion. The default assertion messages provide just enough information to help pinpoint the error. To make the assertion failure message more readable, every assertion provides an optional message parameter, as shown here: +In the output, `F` denotes a failure. You can see the corresponding trace shown under `Failure` along with the name of the failing test. The next few lines contain the stack trace followed by a message that mentions the actual value and the expected value by the assertion. The default assertion messages provide just enough information to help pinpoint the error. To make the assertion failure message more readable, every assertion provides an optional message parameter, as shown here: ```ruby test "should not save article without title" do @@ -169,8 +181,8 @@ end Running this test shows the friendlier assertion message: ```bash - 1) Failure: -test_should_not_save_article_without_title(ArticleTest) [test/models/article_test.rb:6]: +Failure: +ArticleTest#test_should_not_save_article_without_title [/path/to/blog/test/models/article_test.rb:6]: Saved the article without a title ``` @@ -186,11 +198,15 @@ Now the test should pass. Let us verify by running the test again: ```bash $ bin/rails test test/models/article_test.rb:6 +Run options: --seed 31252 + +# Running: + . -Finished tests in 0.047721s, 20.9551 tests/s, 20.9551 assertions/s. +Finished in 0.027476s, 36.3952 runs/s, 36.3952 assertions/s. -1 tests, 1 assertions, 0 failures, 0 errors, 0 skips +1 runs, 1 assertions, 0 failures, 0 errors, 0 skips ``` Now, if you noticed, we first wrote a test which fails for a desired @@ -215,16 +231,25 @@ Now you can see even more output in the console from running the tests: ```bash $ bin/rails test test/models/article_test.rb -E +Run options: --seed 1808 + +# Running: + +.E + +Error: +ArticleTest#test_should_report_error: +NameError: undefined local variable or method 'some_undefined_variable' for #<ArticleTest:0x007fee3aa71798> + test/models/article_test.rb:11:in 'block in <class:ArticleTest>' + -Finished tests in 0.030974s, 32.2851 tests/s, 0.0000 assertions/s. +bin/rails test test/models/article_test.rb:9 - 1) Error: -test_should_report_error(ArticleTest): -NameError: undefined local variable or method `some_undefined_variable' for #<ArticleTest:0x007fe32e24afe0> - test/models/article_test.rb:10:in `block in <class:ArticleTest>' -1 tests, 0 assertions, 0 failures, 1 errors, 0 skips + +Finished in 0.040609s, 49.2500 runs/s, 24.6250 assertions/s. + +2 runs, 1 assertions, 0 failures, 1 errors, 0 skips ``` Notice the 'E' in the output. It denotes a test with error. @@ -287,7 +312,6 @@ specify to make your test failure messages clearer. | `assert_not_in_delta( expected, actual, [delta], [msg] )` | Ensures that the numbers `expected` and `actual` are not within `delta` of each other.| | `assert_throws( symbol, [msg] ) { block }` | Ensures that the given block throws the symbol.| | `assert_raises( exception1, exception2, ... ) { block }` | Ensures that the given block raises one of the given exceptions.| -| `assert_nothing_raised { block }` | Ensures that the given block doesn't raise any exceptions.| | `assert_instance_of( class, obj, [msg] )` | Ensures that `obj` is an instance of `class`.| | `assert_not_instance_of( class, obj, [msg] )` | Ensures that `obj` is not an instance of `class`.| | `assert_kind_of( class, obj, [msg] )` | Ensures that `obj` is an instance of `class` or is descending from it.| @@ -318,6 +342,7 @@ Rails adds some custom assertions of its own to the `minitest` framework: | --------------------------------------------------------------------------------- | ------- | | [`assert_difference(expressions, difference = 1, message = nil) {...}`](http://api.rubyonrails.org/classes/ActiveSupport/Testing/Assertions.html#method-i-assert_difference) | Test numeric difference between the return value of an expression as a result of what is evaluated in the yielded block.| | [`assert_no_difference(expressions, message = nil, &block)`](http://api.rubyonrails.org/classes/ActiveSupport/Testing/Assertions.html#method-i-assert_no_difference) | Asserts that the numeric result of evaluating an expression is not changed before and after invoking the passed in block.| +| [`assert_nothing_raised { block }`](http://api.rubyonrails.org/classes/ActiveSupport/TestCase.html#method-i-assert_nothing_raised) | Ensures that the given block doesn't raise any exceptions.| | [`assert_recognizes(expected_options, path, extras={}, message=nil)`](http://api.rubyonrails.org/classes/ActionDispatch/Assertions/RoutingAssertions.html#method-i-assert_recognizes) | Asserts that the routing of the given path was handled correctly and that the parsed options (given in the expected_options hash) match path. Basically, it asserts that Rails recognizes the route given by expected_options.| | [`assert_generates(expected_path, options, defaults={}, extras = {}, message=nil)`](http://api.rubyonrails.org/classes/ActionDispatch/Assertions/RoutingAssertions.html#method-i-assert_generates) | Asserts that the provided options can be used to generate the provided path. This is the inverse of assert_recognizes. The extras parameter is used to tell the request the names and values of additional request parameters that would be in a query string. The message parameter allows you to specify a custom error message for assertion failures.| | [`assert_response(type, message = nil)`](http://api.rubyonrails.org/classes/ActionDispatch/Assertions/ResponseAssertions.html#method-i-assert_response) | Asserts that the response comes with a specific status code. You can specify `:success` to indicate 200-299, `:redirect` to indicate 300-399, `:missing` to indicate 404, or `:error` to match the 500-599 range. You can also pass an explicit status number or its symbolic equivalent. For more information, see [full list of status codes](http://rubydoc.info/github/rack/rack/master/Rack/Utils#HTTP_STATUS_CODES-constant) and how their [mapping](http://rubydoc.info/github/rack/rack/master/Rack/Utils#SYMBOL_TO_STATUS_CODE-constant) works.| @@ -342,17 +367,21 @@ documentation](http://docs.seattlerb.org/minitest). ### The Rails Test Runner -We can run all of our tests at once by using the `rails test` command. +We can run all of our tests at once by using the `bin/rails test` command. -Or we can run a single test by passing the `rails test` command the filename containing the test cases. +Or we can run a single test file by passing the `bin/rails test` command the filename containing the test cases. ```bash $ bin/rails test test/models/article_test.rb -. +Run options: --seed 1559 -Finished tests in 0.009262s, 107.9680 tests/s, 107.9680 assertions/s. +# Running: -1 tests, 1 assertions, 0 failures, 0 errors, 0 skips +.. + +Finished in 0.027034s, 73.9810 runs/s, 110.9715 assertions/s. + +2 runs, 3 assertions, 0 failures, 0 errors, 0 skips ``` This will run all test methods from the test case. @@ -362,6 +391,10 @@ You can also run a particular test method from the test case by providing the ```bash $ bin/rails test test/models/article_test.rb -n test_the_truth +Run options: -n test_the_truth --seed 43583 + +# Running: + . Finished tests in 0.009064s, 110.3266 tests/s, 110.3266 assertions/s. @@ -372,7 +405,7 @@ Finished tests in 0.009064s, 110.3266 tests/s, 110.3266 assertions/s. You can also run a test at a specific line by providing the line number. ```bash -$ bin/rails test test/models/post_test.rb:44 # run specific test and line +$ bin/rails test test/models/article_test.rb:6 # run specific test and line ``` You can also run an entire directory of tests by providing the path to the directory. @@ -381,6 +414,38 @@ You can also run an entire directory of tests by providing the path to the direc $ bin/rails test test/controllers # run all tests from specific directory ``` +The test runner provides lot of other features too like failing fast, deferring test output +at the end of test run and so on. Check the documentation of the test runner as follows: + +```bash +$ bin/rails test -h +minitest options: + -h, --help Display this help. + -s, --seed SEED Sets random seed. Also via env. Eg: SEED=n rake + -v, --verbose Verbose. Show progress processing files. + -n, --name PATTERN Filter run on /regexp/ or string. + --exclude PATTERN Exclude /regexp/ or string from run. + +Known extensions: rails, pride + +Usage: bin/rails test [options] [files or directories] +You can run a single test by appending a line number to a filename: + + bin/rails test test/models/user_test.rb:27 + +You can run multiple files and directories at the same time: + + bin/rails test test/controllers test/integration/login_test.rb + +By default test failures and errors are reported inline during a run. + +Rails options: + -e, --environment ENV Run tests in the ENV environment + -b, --backtrace Show the complete backtrace + -d, --defer-output Output test failures and errors after the test run + -f, --fail-fast Abort test run on first failure or error + -c, --[no-]color Enable color in the output +``` The Test Database ----------------- @@ -529,7 +594,7 @@ Integration Testing Integration tests are used to test how various parts of your application interact. They are generally used to test important workflows within our application. -For creating Rails integration tests, we use the 'test/integration' directory for our application. Rails provides a generator to create an integration test skeleton for us. +For creating Rails integration tests, we use the `test/integration` directory for our application. Rails provides a generator to create an integration test skeleton for us. ```bash $ bin/rails generate integration_test user_flows @@ -685,9 +750,8 @@ Let's take a look at one such test, `test_should_get_index` from the file `artic # articles_controller_test.rb class ArticlesControllerTest < ActionDispatch::IntegrationTest test "should get index" do - get '/articles' + get articles_url assert_response :success - assert_includes @response.body, 'Articles' end end ``` @@ -695,30 +759,29 @@ end In the `test_should_get_index` test, Rails simulates a request on the action called `index`, making sure the request was successful and also ensuring that the right response body has been generated. -The `get` method kicks off the web request and populates the results into the `@response`. It accepts 4 arguments: - -* The action of the controller you are requesting. - This can be in the form of a string or a route (i.e. `articles_url`). +The `get` method kicks off the web request and populates the results into the `@response`. It can accept up to 6 arguments: +* The URI of the controller action you are requesting. + This can be in the form of a string or a route helper (e.g. `articles_url`). * `params`: option with a hash of request parameters to pass into the action (e.g. query string parameters or article variables). - -* `session`: option with a hash of session variables to pass along with the request. - -* `flash`: option with a hash of flash values. +* `headers`: for setting the headers that will be passed with the request. +* `env`: for customizing the request environment as needed. +* `xhr`: whether the request is Ajax request or not. Can be set to true for marking the request as Ajax. +* `as`: for encoding the request with different content type. Supports `:json` by default. All of these keyword arguments are optional. -Example: Calling the `:show` action, passing an `id` of 12 as the `params` and setting a `user_id` of 5 in the session: +Example: Calling the `:show` action, passing an `id` of 12 as the `params` and setting `HTTP_REFERER` header: ```ruby -get(:show, params: { id: 12 }, session: { user_id: 5 }) +get article_url, params: { id: 12 }, headers: { "HTTP_REFERER" => "http://example.com/home" } ``` -Another example: Calling the `:view` action, passing an `id` of 12 as the `params`, this time with no session, but with a flash message. +Another example: Calling the `:update` action, passing an `id` of 12 as the `params` as an Ajax request. ```ruby -get(view_url, params: { id: 12 }, flash: { message: 'booya!' }) +patch article_url, params: { id: 12 }, xhr: true ``` NOTE: If you try running `test_should_create_article` test from `articles_controller_test.rb` it will fail on account of the newly added model level validation and rightly so. @@ -728,7 +791,7 @@ Let us modify `test_should_create_article` test in `articles_controller_test.rb` ```ruby test "should create article" do assert_difference('Article.count') do - post '/article', params: { article: { title: 'Some title' } } + post articles_url, params: { article: { body: 'Rails is awesome!', title: 'Hello Rails' } } end assert_redirected_to article_path(Article.last) @@ -759,7 +822,7 @@ To test AJAX requests, you can specify the `xhr: true` option to `get`, `post`, ```ruby test "ajax request" do - article = articles(:first) + article = articles(:one) get article_url(article), xhr: true assert_equal 'hello world', @response.body @@ -785,27 +848,38 @@ cookies["are_good_for_u"] cookies[:are_good_for_u] ### Instance Variables Available -You also have access to three instance variables in your functional tests: +You also have access to three instance variables in your functional tests, after a request is made: * `@controller` - The controller processing the request * `@request` - The request object * `@response` - The response object + +```ruby +class ArticlesControllerTest < ActionDispatch::IntegrationTest + test "should get index" do + get articles_url + + assert_equal "index", @controller.action_name + assert_equal "application/x-www-form-urlencoded", @request.media_type + assert_match "Articles", @response.body + end +end +``` + ### Setting Headers and CGI variables [HTTP headers](http://tools.ietf.org/search/rfc2616#section-5.3) and [CGI variables](http://tools.ietf.org/search/rfc3875#section-4.1) -can be set directly on the `@request` instance variable: +can be passed as headers: ```ruby # setting an HTTP Header -@request.headers["Accept"] = "text/plain, text/html" -get articles_url # simulate the request with custom header +get articles_url, headers: { "Content-Type": "text/plain" } # simulate the request with custom header # setting a CGI variable -@request.headers["HTTP_REFERER"] = "http://example.com/home" -post article_url # simulate the request with custom env variable +get articles_url, headers: { "HTTP_REFERER": "http://example.com/home" } # simulate the request with custom env variable ``` ### Testing `flash` notices @@ -841,7 +915,7 @@ F Finished in 0.114870s, 8.7055 runs/s, 34.8220 assertions/s. 1) Failure: -ArticlesControllerTest#test_should_create_article [/Users/zzak/code/bench/sharedapp/test/controllers/articles_controller_test.rb:16]: +ArticlesControllerTest#test_should_create_article [/test/controllers/articles_controller_test.rb:16]: --- expected +++ actual @@ -1 +1 @@ @@ -890,7 +964,7 @@ Let's write a test for the `:show` action: ```ruby test "should show article" do article = articles(:one) - get '/article', params: { id: article.id } + get article_url(article) assert_response :success end ``` @@ -916,7 +990,7 @@ We can also add a test for updating an existing Article. test "should update article" do article = articles(:one) - patch '/article', params: { id: article.id, article: { title: "updated" } } + patch article_url(article), params: { article: { title: "updated" } } assert_redirected_to article_path(article) # Reload association to fetch updated data and assert that title is updated. @@ -959,7 +1033,7 @@ class ArticlesControllerTest < ActionDispatch::IntegrationTest end test "should update article" do - patch '/article', params: { id: @article.id, article: { title: "updated" } } + patch article_url(@article), params: { article: { title: "updated" } } assert_redirected_to article_path(@article) # Reload association to fetch updated data and assert that title is updated. @@ -977,11 +1051,11 @@ To avoid code duplication, you can add your own test helpers. Sign in helper can be a good example: ```ruby -#test/test_helper.rb +# test/test_helper.rb module SignInHelper - def sign_in(user) - session[:user_id] = user.id + def sign_in_as(user) + post sign_in_url(email: user.email, password: user.password) end end @@ -997,7 +1071,7 @@ class ProfileControllerTest < ActionDispatch::IntegrationTest test "should show profile" do # helper is now reusable from any controller test case - sign_in users(:david) + sign_in_as users(:david) get profile_url assert_response :success @@ -1008,7 +1082,7 @@ end Testing Routes -------------- -Like everything else in your Rails application, you can test your routes. +Like everything else in your Rails application, you can test your routes. Route tests reside in `test/controllers/` or are part of controller tests. NOTE: If your application has complex routes, Rails provides a number of useful helpers to test them. @@ -1283,11 +1357,11 @@ Here is an example using the [`travel_to`](http://api.rubyonrails.org/classes/Ac user = User.create(name: 'Gaurish', activation_date: Date.new(2004, 10, 24)) assert_not user.applicable_for_gifting? travel_to Date.new(2004, 11, 24) do - assert_equal Date.new(2004, 10, 24), user.activation_date # inside the travel_to block `Date.current` is mocked + assert_equal Date.new(2004, 10, 24), user.activation_date # inside the `travel_to` block `Date.current` is mocked assert user.applicable_for_gifting? end assert_equal Date.new(2004, 10, 24), user.activation_date # The change was visible only inside the `travel_to` block. ``` -Please see [`ActiveSupport::TimeHelpers` API Documentation](http://api.rubyonrails.org/classes/ActiveSupport/Testing/TimeHelpers.html) +Please see [`ActiveSupport::Testing::TimeHelpers` API Documentation](http://api.rubyonrails.org/classes/ActiveSupport/Testing/TimeHelpers.html) for in-depth information about the available time helpers. diff --git a/guides/source/upgrading_ruby_on_rails.md b/guides/source/upgrading_ruby_on_rails.md index 59eddb6302..2372590cec 100644 --- a/guides/source/upgrading_ruby_on_rails.md +++ b/guides/source/upgrading_ruby_on_rails.md @@ -44,7 +44,7 @@ TIP: Ruby 1.8.7 p248 and p249 have marshaling bugs that crash Rails. Ruby Enterp ### The Update Task -Rails provides the `app:update` task (`rails:update` on 4.2 and earlier). After updating the Rails version +Rails provides the `app:update` task (`rake rails:update` on 4.2 and earlier). After updating the Rails version in the Gemfile, run this task. This will help you with the creation of new files and changes of old files in an interactive session. @@ -68,14 +68,16 @@ Don't forget to review the difference, to see if there were any unexpected chang Upgrading from Rails 4.2 to Rails 5.0 ------------------------------------- -### Ruby 2.2.2+ +For more information on changes made to Rails 5.0 please see the [release notes](5_0_release_notes.html). -From Ruby on Rails 5.0 onwards, Ruby 2.2.2+ is the only supported version. -Make sure you are on Ruby 2.2.2 version or greater, before you proceed. +### Ruby 2.2.2+ required -### Active Record models now inherit from ApplicationRecord by default +From Ruby on Rails 5.0 onwards, Ruby 2.2.2+ is the only supported Ruby version. +Make sure you are on Ruby 2.2.2 version or greater, before you proceed. -In Rails 4.2 an Active Record model inherits from `ActiveRecord::Base`. In Rails 5.0, +### Active Record Models Now Inherit from ApplicationRecord by Default + +In Rails 4.2, an Active Record model inherits from `ActiveRecord::Base`. In Rails 5.0, all models inherit from `ApplicationRecord`. `ApplicationRecord` is a new superclass for all app models, analogous to app @@ -83,7 +85,7 @@ controllers subclassing `ApplicationController` instead of `ActionController::Base`. This gives apps a single spot to configure app-wide model behavior. -When upgrading from Rails 4.2 to Rails 5.0 you need to create an +When upgrading from Rails 4.2 to Rails 5.0, you need to create an `application_record.rb` file in `app/models/` and add the following content: ``` @@ -92,7 +94,9 @@ class ApplicationRecord < ActiveRecord::Base end ``` -### Halting callback chains via `throw(:abort)` +Then make sure that all your models inherit from it. + +### Halting Callback Chains via `throw(:abort)` In Rails 4.2, when a 'before' callback returns `false` in Active Record and Active Model, then the entire callback chain is halted. In other words, @@ -117,12 +121,12 @@ halted the chain when any value was returned. See [#17227](https://github.com/rails/rails/pull/17227) for more details. -### ActiveJob jobs now inherit from ApplicationJob by default +### ActiveJob Now Inherits from ApplicationJob by Default -In Rails 4.2 an ActiveJob inherits from `ActiveJob::Base`. In Rails 5.0 this +In Rails 4.2, an Active Job inherits from `ActiveJob::Base`. In Rails 5.0, this behavior has changed to now inherit from `ApplicationJob`. -When upgrading from Rails 4.2 to Rails 5.0 you need to create an +When upgrading from Rails 4.2 to Rails 5.0, you need to create an `application_job.rb` file in `app/jobs/` and add the following content: ``` @@ -134,6 +138,210 @@ Then make sure that all your job classes inherit from it. See [#19034](https://github.com/rails/rails/pull/19034) for more details. +### Rails Controller Testing + +`assigns` and `assert_template` have been extracted to the `rails-controller-testing` gem. To +continue using these methods in your controller tests, add `gem 'rails-controller-testing'` to +your Gemfile. + +If you are using Rspec for testing, please see the extra configuration required in the gem's +documentation. + +### Autoloading is Disabled After Booting in the Production Environment + +Autoloading is now disabled after booting in the production environment by +default. + +Eager loading the application is part of the boot process, so top-level +constants are fine and are still autoloaded, no need to require their files. + +Constants in deeper places only executed at runtime, like regular method bodies, +are also fine because the file defining them will have been eager loaded while booting. + +For the vast majority of applications this change needs no action. But in the +very rare event that your application needs autoloading while running in +production mode, set `Rails.application.config.enable_dependency_loading` to +true. + +### XML Serialization + +`ActiveModel::Serializers::Xml` has been extracted from Rails to the `activemodel-serializers-xml` +gem. To continue using XML serialization in your application, add `gem 'activemodel-serializers-xml'` +to your Gemfile. + +### Removed Support for Legacy `mysql` Database Adapter + +Rails 5 removes support for the legacy `mysql` database adapter. Most users should be able to +use `mysql2` instead. It will be converted to a separate gem when we find someone to maintain +it. + +### Removed Support for Debugger + +`debugger` is not supported by Ruby 2.2 which is required by Rails 5. Use `byebug` instead. + +### Use bin/rails for running tasks and tests + +Rails 5 adds the ability to run tasks and tests through `bin/rails` instead of rake. Generally +these changes are in parallel with rake, but some were ported over altogether. + +To use the new test runner simply type `bin/rails test`. + +`rake dev:cache` is now `rails dev:cache`. + +Run `bin/rails` to see the list of commands available. + +### `ActionController::Parameters` No Longer Inherits from `HashWithIndifferentAccess` + +Calling `params` in your application will now return an object instead of a hash. If your +parameters are already permitted, then you will not need to make any changes. If you are using `slice` +and other methods that depend on being able to read the hash regardless of `permitted?` you will +need to upgrade your application to first permit and then convert to a hash. + + params.permit([:proceed_to, :return_to]).to_h + +### `protect_from_forgery` Now Defaults to `prepend: false` + +`protect_from_forgery` defaults to `prepend: false` which means that it will be inserted into +the callback chain at the point in which you call it in your application. If you want +`protect_from_forgery` to always run first, then you should change your application to use +`protect_from_forgery prepend: true`. + +### Default Template Handler is Now RAW + +Files without a template handler in their extension will be rendered using the raw handler. +Previously Rails would render files using the ERB template handler. + +If you do not want your file to be handled via the raw handler, you should add an extension +to your file that can be parsed by the appropriate template handler. + +### Added Wildcard Matching for Template Dependencies + +You can now use wildcard matching for your template dependencies. For example, if you were +defining your templates as such: + +```erb +<% # Template Dependency: recordings/threads/events/subscribers_changed %> +<% # Template Dependency: recordings/threads/events/completed %> +<% # Template Dependency: recordings/threads/events/uncompleted %> +``` + +You can now just call the dependency once with a wildcard. + +```erb +<% # Template Dependency: recordings/threads/events/* %> +``` + +### Removed Support for `protected_attributes` Gem + +The `protected_attributes` gem is no longer supported in Rails 5. + +### Removed support for `activerecord-deprecated_finders` gem + +The `activerecord-deprecated_finders` gem is no longer supported in Rails 5. + +### `ActiveSupport::TestCase` Default Test Order is Now Random + +When tests are run in your application, the default order is now `:random` +instead of `:sorted`. Use the following config option to set it back to `:sorted`. + +```ruby +# config/environments/test.rb +Rails.application.configure do + config.active_support.test_order = :sorted +end +``` + +### `ActionController::Live` became a `Concern` + +If you include `ActionController::Live` in another module that is included in your controller, then you +should also extend the module with `ActiveSupport::Concern`. Alternatively, you can use the `self.included` hook +to include `ActionController::Live` directly to the controller once the `StreamingSupport` is included. + +This means that if your application used to have its own streaming module, the following code +would break in production mode: + +```ruby +# This is a work-around for streamed controllers performing authentication with Warden/Devise. +# See https://github.com/plataformatec/devise/issues/2332 +# Authenticating in the router is another solution as suggested in that issue +class StreamingSupport + include ActionController::Live # this won't work in production for Rails 5 + # extend ActiveSupport::Concern # unless you uncomment this line. + + def process(name) + super(name) + rescue ArgumentError => e + if e.message == 'uncaught throw :warden' + throw :warden + else + raise e + end + end +end +``` + +### New Framework Defaults + +#### Active Record `belongs_to` Required by Default Option + +`belongs_to` will now trigger a validation error by default if the association is not present. + +This can be turned off per-association with `optional: true`. + +This default will be automatically configured in new applications. If existing application +want to add this feature it will need to be turned on in an initializer. + + config.active_record.belongs_to_required_by_default = true + +#### Per-form CSRF Tokens + +Rails 5 now supports per-form CSRF tokens to mitigate against code-injection attacks with forms +created by JavaScript. With this option turned on, forms in your application will each have their +own CSRF token that is specified to the action and method for that form. + + config.action_controller.per_form_csrf_tokens = true + +#### Forgery Protection with Origin Check + +You can now configure your application to check if the HTTP `Origin` header should be checked +against the site's origin as an additional CSRF defense. Set the following in your config to +true: + + config.action_controller.forgery_protection_origin_check = true + +#### Allow Configuration of Action Mailer Queue Name + +The default mailer queue name is `mailers`. This configuration option allows you to globally change +the queue name. Set the following in your config: + + config.action_mailer.deliver_later_queue_name = :new_queue_name + +#### Support Fragment Caching in Action Mailer Views + +Set `config.action_mailer.perform_caching` in your config to determine whether your Action Mailer views +should support caching. + + config.action_mailer.perform_caching = true + +#### Configure the Output of `db:structure:dump` + +If you're using `schema_search_path` or other PostgreSQL extentions, you can control how the schema is +dumped. Set to `:all` to generate all dumps, or to `:schema_search_path` to generate from schema search path. + + config.active_record.dump_schemas = :all + +#### Configure SSL Options to Enable HSTS with Subdomains + +Set the following in your config to enable HSTS when using subdomains: + + config.ssl_options = { hsts: { subdomains: true } } + +#### Preserve Timezone of the Receiver + +When using Ruby 2.4, you can preserve the timezone of the receiver when calling `to_time`. + + ActiveSupport.to_time_preserves_timezone = false + Upgrading from Rails 4.1 to Rails 4.2 ------------------------------------- @@ -881,7 +1089,7 @@ Rails 4.0 no longer supports loading plugins from `vendor/plugins`. You must rep * Rails 4.0 has removed the identity map from Active Record, due to [some inconsistencies with associations](https://github.com/rails/rails/commit/302c912bf6bcd0fa200d964ec2dc4a44abe328a6). If you have manually enabled it in your application, you will have to remove the following config that has no effect anymore: `config.active_record.identity_map`. -* The `delete` method in collection associations can now receive `Fixnum` or `String` arguments as record ids, besides records, pretty much like the `destroy` method does. Previously it raised `ActiveRecord::AssociationTypeMismatch` for such arguments. From Rails 4.0 on `delete` automatically tries to find the records matching the given ids before deleting them. +* The `delete` method in collection associations can now receive `Integer` or `String` arguments as record ids, besides records, pretty much like the `destroy` method does. Previously it raised `ActiveRecord::AssociationTypeMismatch` for such arguments. From Rails 4.0 on `delete` automatically tries to find the records matching the given ids before deleting them. * In Rails 4.0 when a column or a table is renamed the related indexes are also renamed. If you have migrations which rename the indexes, they are no longer needed. @@ -979,7 +1187,7 @@ Please read [Pull Request #9978](https://github.com/rails/rails/pull/9978) for d * Rails 4.0 has deprecated `ActionController::Base.page_cache_extension` option. Use `ActionController::Base.default_static_extension` instead. -* Rails 4.0 has removed Action and Page caching from Action Pack. You will need to add the `actionpack-action_caching` gem in order to use `caches_action` and the `actionpack-page_caching` to use `caches_pages` in your controllers. +* Rails 4.0 has removed Action and Page caching from Action Pack. You will need to add the `actionpack-action_caching` gem in order to use `caches_action` and the `actionpack-page_caching` to use `caches_page` in your controllers. * Rails 4.0 has removed the XML parameters parser. You will need to add the `actionpack-xml_parser` gem if you require this feature. @@ -1218,7 +1426,7 @@ config.assets.digest = true # 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 ) +# config.assets.precompile += %w( admin.js admin.css ) # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies. # config.force_ssl = true diff --git a/guides/source/working_with_javascript_in_rails.md b/guides/source/working_with_javascript_in_rails.md index c58aee96db..c1dfcab6f3 100644 --- a/guides/source/working_with_javascript_in_rails.md +++ b/guides/source/working_with_javascript_in_rails.md @@ -328,7 +328,7 @@ this: respond_to do |format| if @user.save format.html { redirect_to @user, notice: 'User was successfully created.' } - format.js {} + format.js format.json { render json: @user, status: :created, location: @user } else format.html { render action: "new" } |