Re-do Getting Started application with Rails 4.

The sample application with the Getting Started Guide was very out of
date. I've re-done it on edge (as of 51b9def5bf108fb566e) so it should
be good to go with Rails 4. It's also in synch with what the guide
actually says.

3 files changed, 42 insertions, 23 deletions

diff --git a/guides/code/getting_started/config/environments/development.rb b/guides/code/getting_started/config/environments/development.rb
index cec2b20c0b..ed2667ac58 100644
--- a/guides/code/getting_started/config/environments/development.rb
+++ b/guides/code/getting_started/config/environments/development.rb
@@ -2,10 +2,13 @@ Blog::Application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
 
   # In the development environment your application's code is reloaded on
-  # every request.  This slows down response time but is perfect for development
+  # every request. This slows down response time but is perfect for development
   # since you don't have to restart the web server when you make code changes.
   config.cache_classes = false
 
+  # Do not eager load code on boot.
+  config.eager_load = false
+
   # Show full error reports and disable caching.
   config.consider_all_requests_local       = true
   config.action_controller.perform_caching = false
@@ -19,16 +22,13 @@ Blog::Application.configure do
   # Only use best-standards-support built into browsers.
   config.action_dispatch.best_standards_support = :builtin
 
-  # Raise exception on mass assignment protection for ActiveRecord models.
-  config.active_record.mass_assignment_sanitizer = :strict
-
   # Log the query plan for queries taking more than this (works
   # with SQLite, MySQL, and PostgreSQL).
   config.active_record.auto_explain_threshold_in_seconds = 0.5
 
-  # Do not compress assets.
-  config.assets.compress = false
+  # Raise an error on page load if there are pending migrations
+  config.active_record.migration_error = :page_load
 
-  # Expands the lines which load the assets.
+  # Debug mode disables concatenation and preprocessing of assets.
   config.assets.debug = true
 end
diff --git a/guides/code/getting_started/config/environments/production.rb b/guides/code/getting_started/config/environments/production.rb
index ecc35b030b..58dab2a319 100644
--- a/guides/code/getting_started/config/environments/production.rb
+++ b/guides/code/getting_started/config/environments/production.rb
@@ -4,24 +4,36 @@ Blog::Application.configure do
   # Code is not reloaded between requests.
   config.cache_classes = true
 
+  # Eager load code on boot. This eager loads most of Rails and
+  # your application in memory, allowing both thread web servers
+  # and those relying on copy on write to perform better.
+  # Rake tasks automatically ignore this option for performance.
+  config.eager_load = true
+
   # Full error reports are disabled and caching is turned on.
   config.consider_all_requests_local       = false
   config.action_controller.perform_caching = true
 
+  # Enable Rack::Cache to put a simple HTTP cache in front of your application
+  # Add `rack-cache` to your Gemfile before enabling this.
+  # For large-scale production use, consider using a caching reverse proxy like nginx, varnish or squid.
+  # config.action_dispatch.rack_cache = true
+
   # Disable Rails's static asset server (Apache or nginx will already do this).
   config.serve_static_assets = false
 
   # Compress JavaScripts and CSS.
-  config.assets.compress = true
+  config.assets.js_compressor  = :uglifier
+  # config.assets.css_compressor = :sass
 
-  # Don't fallback to assets pipeline if a precompiled asset is missed.
+  # Whether to fallback to assets pipeline if a precompiled asset is missed.
   config.assets.compile = false
 
   # Generate digests for assets URLs.
   config.assets.digest = true
 
-  # Defaults to nil
-  # config.assets.manifest = YOUR_PATH
+  # Version of your assets, change this if you want to expire all your assets.
+  config.assets.version = '1.0'
 
   # Specifies the header that your server uses for sending files.
   # config.action_dispatch.x_sendfile_header = "X-Sendfile" # for apache
@@ -30,8 +42,8 @@ Blog::Application.configure do
   # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
   # config.force_ssl = true
 
-  # See everything in the log (default is :info).
-  # config.log_level = :debug
+  # Set to :debug to see everything in the log.
+  config.log_level = :info
 
   # Prepend all log lines with the following tags.
   # config.log_tags = [ :subdomain, :uuid ]
@@ -45,15 +57,14 @@ Blog::Application.configure do
   # Enable serving of images, stylesheets, and JavaScripts from an asset server.
   # config.action_controller.asset_host = "http://assets.example.com"
 
-  # Precompile additional assets (application.js, application.css, and all non-JS/CSS are already added).
+  # Precompile additional assets.
+  # application.js, application.css, and all non-JS/CSS in app/assets folder are already added.
   # config.assets.precompile += %w( search.js )
 
-  # Disable delivery errors, bad email addresses will be ignored.
+  # Ignore bad email addresses and do not raise email delivery errors.
+  # Set this to true and configure the email server for immediate delivery to raise delivery errors.
   # config.action_mailer.raise_delivery_errors = false
 
-  # Enable threaded mode.
-  # config.threadsafe!
-
   # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
   # the I18n.default_locale when a translation can not be found).
   config.i18n.fallbacks = true
@@ -64,4 +75,10 @@ Blog::Application.configure do
   # Log the query plan for queries taking more than this (works
   # with SQLite, MySQL, and PostgreSQL).
   # config.active_record.auto_explain_threshold_in_seconds = 0.5
+
+  # Disable automatic flushing of the log to improve performance.
+  # config.autoflush_log = false
+
+  # Use default logging formatter so that PID and timestamp are not suppressed.
+  config.log_formatter = ::Logger::Formatter.new
 end
diff --git a/guides/code/getting_started/config/environments/test.rb b/guides/code/getting_started/config/environments/test.rb
index f2bc932fb3..00adaa5015 100644
--- a/guides/code/getting_started/config/environments/test.rb
+++ b/guides/code/getting_started/config/environments/test.rb
@@ -2,11 +2,16 @@ Blog::Application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
 
   # The test environment is used exclusively to run your application's
-  # test suite.  You never need to work with it otherwise.  Remember that
+  # test suite. You never need to work with it otherwise. Remember that
   # your test database is "scratch space" for the test suite and is wiped
-  # and recreated between test runs.  Don't rely on the data there!
+  # and recreated between test runs. Don't rely on the data there!
   config.cache_classes = true
 
+  # Do not eager load code on boot. This avoids loading your whole application
+  # just for the purpose of running a single test. If you are using a tool that
+  # preloads Rails for running tests, you may have to set it to true.
+  config.eager_load = false
+
   # Configure static asset server for tests with Cache-Control for performance.
   config.serve_static_assets = true
   config.static_cache_control = "public, max-age=3600"
@@ -26,9 +31,6 @@ Blog::Application.configure do
   # ActionMailer::Base.deliveries array.
   config.action_mailer.delivery_method = :test
 
-  # Raise exception on mass assignment protection for Active Record models.
-  config.active_record.mass_assignment_sanitizer = :strict
-
   # Print deprecation notices to the stderr.
   config.active_support.deprecation = :stderr
 end