[IMPORTANT] Make "sprockets/railtie" require explicit.

This makes "sprockets/railtie" explicit. This means that sprockets will
be loaded when you require "rails/all". If you are not using requiring
"rails/all", you need to manually load it with all other framework
railties.

In order to be complete, this commit also adds --skip-sprockets to
the rails generator.

actionpack/lib/action_controller/railtie.rb

@@ -4,7 +4,6 @@ require "action_dispatch/railtie"
 require "action_view/railtie"
 require "abstract_controller/railties/routes_helpers"
 require "action_controller/railties/paths"
-require "sprockets/railtie"
 
 module ActionController
   class Railtie < Rails::Railtie

actionpack/lib/sprockets/railtie.rb

@@ -1,6 +1,7 @@
 module Sprockets
   autoload :Helpers, "sprockets/helpers"
 
+  # TODO: Get rid of config.assets.enabled
   class Railtie < ::Rails::Railtie
     def self.using_coffee?
       require 'coffee-script'
@@ -11,6 +12,10 @@ module Sprockets
 
     config.app_generators.javascript_engine :coffee if using_coffee?
 
+    rake_tasks do
+      load "sprockets/assets.rake"
+    end
+
     # Configure ActionController to use sprockets.
     initializer "sprockets.set_configs", :after => "action_controller.set_configs" do |app|
       ActiveSupport.on_load(:action_controller) do

railties/CHANGELOG

@@ -8,6 +8,8 @@
 
 *Rails 3.1.0 (unreleased)*
 
+* Make sprockets/railtie require explicit and add --skip-sprockets to app generator [José Valim]
+
 * Added Rails.groups that automatically handles Rails.env and ENV["RAILS_GROUPS"] [José Valim]
 
 * The new rake task assets:clean removes precompiled assets. [fxn]

railties/lib/rails/all.rb

@@ -6,6 +6,7 @@ require "rails"
   action_mailer
   active_resource
   rails/test_unit
+  sprockets
 ).each do |framework|
   begin
     require "#{framework}/railtie"

railties/lib/rails/generators/app_base.rb

@@ -37,6 +37,9 @@ module Rails
         class_option :skip_active_record, :type => :boolean, :aliases => "-O", :default => false,
                                           :desc => "Skip Active Record files"
 
+        class_option :skip_sprockets,     :type => :boolean, :aliases => "-S", :default => false,
+                                          :desc => "Skip Sprockets files"
+
         class_option :database,           :type => :string, :aliases => "-d", :default => "sqlite3",
                                           :desc => "Preconfigure for selected database (options: #{DATABASES.join('/')})"
 
@@ -124,7 +127,7 @@ module Rails
       end
 
       def include_all_railties?
-        !options[:skip_active_record] && !options[:skip_test_unit]
+        !options[:skip_active_record] && !options[:skip_test_unit] && !options[:skip_sprockets]
       end
 
       def comment_if(value)

railties/lib/rails/generators/rails/app/templates/config/application.rb

@@ -8,6 +8,7 @@ require 'rails/all'
 require "action_controller/railtie"
 require "action_mailer/railtie"
 require "active_resource/railtie"
+<%= comment_if :skip_sprockets %> require "sprockets/railtie"
 <%= comment_if :skip_test_unit %> require "rails/test_unit/railtie"
 <% end  -%>
 
@@ -46,7 +47,9 @@ module <%= app_const_base %>
     # Configure sensitive parameters which will be filtered from the log file.
     config.filter_parameters += [:password]
 
+    <% unless  options.skip_sprockets? %>
     # Enable the asset pipeline
     config.assets.enabled = true
+    <% end  %>
   end
 end

railties/lib/rails/generators/rails/plugin_new/templates/rails/application.rb

@@ -1,13 +1,15 @@
 require File.expand_path('../boot', __FILE__)
 
-<% unless  options[:skip_active_record] -%>
+<% if  include_all_railties? -%>
 require 'rails/all'
 <% else  -%>
-# require "active_record/railtie"
+# Pick the frameworks you want:
+<%= comment_if :skip_active_record %>require "active_record/railtie"
 require "action_controller/railtie"
 require "action_mailer/railtie"
 require "active_resource/railtie"
-require "rails/test_unit/railtie"
+<%= comment_if :skip_sprockets %> require "sprockets/railtie"
+<%= comment_if :skip_test_unit %> require "rails/test_unit/railtie"
 <% end  -%>
 
 Bundler.require

railties/lib/rails/tasks.rb

@@ -3,7 +3,6 @@ $VERBOSE = nil
 # Load Rails rakefile extensions
 %w(
   annotations
-  assets
   documentation
   framework
   log

railties/test/generators/app_generator_test.rb

@@ -48,11 +48,12 @@ class AppGeneratorTest < Rails::Generators::TestCase
     ::DEFAULT_APP_FILES
   end
 
-  def test_application_controller_and_layout_files
+  def test_assets
     run_generator
     assert_file "app/views/layouts/application.html.erb", /stylesheet_link_tag\s+"application"/
     assert_file "app/views/layouts/application.html.erb", /javascript_include_tag\s+"application"/
     assert_file "app/assets/stylesheets/application.css"
+    assert_file "config/application.rb", /config\.assets\.enabled = true/
   end
 
   def test_invalid_application_name_raises_an_error
@@ -180,15 +181,20 @@ class AppGeneratorTest < Rails::Generators::TestCase
   def test_generator_if_skip_active_record_is_given
     run_generator [destination_root, "--skip-active-record"]
     assert_no_file "config/database.yml"
+    assert_file "config/application.rb", /#\s+require\s+["']active_record\/railtie["']/
     assert_file "test/test_helper.rb" do |helper_content|
       assert_no_match(/fixtures :all/, helper_content)
     end
     assert_file "test/performance/browsing_test.rb"
   end
 
-  def test_active_record_is_removed_from_frameworks_if_skip_active_record_is_given
-    run_generator [destination_root, "--skip-active-record"]
-    assert_file "config/application.rb", /#\s+require\s+["']active_record\/railtie["']/
+  def test_generator_if_skip_active_record_is_given
+    run_generator [destination_root, "--skip-sprockets"]
+    assert_file "config/application.rb" do |content|
+      assert_match(/#\s+require\s+["']sprockets\/railtie["']/, content)
+      assert_no_match(/config\.assets\.enabled = true/, content)
+    end
+    assert_file "test/performance/browsing_test.rb"
   end
 
   def test_creation_of_a_test_directory