`rake assets:precompile` loads the application but does not initialize it.

To the app developer, this means configuration add in
config/initializers/* will not be executed.

Plugins developers need to special case their initializers that are
meant to be run in the assets group by adding :group => :assets.

Conflicts:

	railties/CHANGELOG
	railties/test/application/assets_test.rb

3 files changed, 71 insertions, 56 deletions

diff --git a/actionpack/lib/sprockets/assets.rake b/actionpack/lib/sprockets/assets.rake
index 7241671db0..5dd48fea98 100644
--- a/actionpack/lib/sprockets/assets.rake
+++ b/actionpack/lib/sprockets/assets.rake
@@ -11,8 +11,9 @@ namespace :assets do
       ENV["RAILS_ENV"]    ||= "production"
       Kernel.exec $0, *ARGV
     else
-      Rake::Task["environment"].invoke
       Rake::Task["tmp:cache:clear"].invoke
+      Rails.application.initialize!(:assets)
+      Sprockets::Bootstrap.new(Rails.application).run
 
       # Ensure that action view is loaded and the appropriate sprockets hooks get executed
       ActionView::Base
diff --git a/actionpack/lib/sprockets/bootstrap.rb b/actionpack/lib/sprockets/bootstrap.rb
new file mode 100644
index 0000000000..ed1ed09374
--- /dev/null
+++ b/actionpack/lib/sprockets/bootstrap.rb
@@ -0,0 +1,65 @@
+module Sprockets
+  class Bootstrap
+    def initialize(app)
+      @app = app
+    end
+
+    # TODO: Get rid of config.assets.enabled
+    def run
+      app, config = @app, @app.config
+      return unless app.assets
+
+      config.assets.paths.each { |path| app.assets.append_path(path) }
+
+      if config.assets.compress
+        # temporarily hardcode default JS compressor to uglify. Soon, it will work
+        # the same as SCSS, where a default plugin sets the default.
+        unless config.assets.js_compressor == false
+          app.assets.js_compressor = LazyCompressor.new { expand_js_compressor(config.assets.js_compressor || :uglifier) }
+        end
+
+        unless config.assets.css_compressor == false
+          app.assets.css_compressor = LazyCompressor.new { expand_css_compressor(config.assets.css_compressor) }
+        end
+      end
+
+      if config.assets.compile
+        app.routes.prepend do
+          mount app.assets => config.assets.prefix
+        end
+      end
+
+      if config.assets.digest
+        app.assets = app.assets.index
+      end
+    end
+
+    protected
+
+    def expand_js_compressor(sym)
+      case sym
+      when :closure
+        require 'closure-compiler'
+        Closure::Compiler.new
+      when :uglifier
+        require 'uglifier'
+        Uglifier.new
+      when :yui
+        require 'yui/compressor'
+        YUI::JavaScriptCompressor.new
+      else
+        sym
+      end
+    end
+
+    def expand_css_compressor(sym)
+      case sym
+      when :yui
+        require 'yui/compressor'
+        YUI::CssCompressor.new
+      else
+        sym
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/actionpack/lib/sprockets/railtie.rb b/actionpack/lib/sprockets/railtie.rb
index 9b31604dbe..edcd4c1113 100644
--- a/actionpack/lib/sprockets/railtie.rb
+++ b/actionpack/lib/sprockets/railtie.rb
@@ -1,5 +1,6 @@
 module Sprockets
-  autoload :Helpers, "sprockets/helpers"
+  autoload :Bootstrap,      "sprockets/bootstrap"
+  autoload :Helpers,        "sprockets/helpers"
   autoload :LazyCompressor, "sprockets/compressors"
   autoload :NullCompressor, "sprockets/compressors"
   autoload :StaticCompiler, "sprockets/static_compiler"
@@ -12,7 +13,7 @@ module Sprockets
       load "sprockets/assets.rake"
     end
 
-    initializer "sprockets.environment" do |app|
+    initializer "sprockets.environment", :group => :assets do |app|
       config = app.config
       next unless config.assets.enabled
 
@@ -51,59 +52,7 @@ module Sprockets
     # are compiled, and so that other Railties have an opportunity to
     # register compressors.
     config.after_initialize do |app|
-      next unless app.assets
-      config = app.config
-
-      config.assets.paths.each { |path| app.assets.append_path(path) }
-
-      if config.assets.compress
-        # temporarily hardcode default JS compressor to uglify. Soon, it will work
-        # the same as SCSS, where a default plugin sets the default.
-        unless config.assets.js_compressor == false
-          app.assets.js_compressor = LazyCompressor.new { expand_js_compressor(config.assets.js_compressor || :uglifier) }
-        end
-
-        unless config.assets.css_compressor == false
-          app.assets.css_compressor = LazyCompressor.new { expand_css_compressor(config.assets.css_compressor) }
-        end
-      end
-
-      if config.assets.compile
-        app.routes.prepend do
-          mount app.assets => config.assets.prefix
-        end
-      end
-
-      if config.assets.digest
-        app.assets = app.assets.index
-      end
+      Sprockets::Bootstrap.new(app).run
     end
-
-    protected
-      def expand_js_compressor(sym)
-        case sym
-        when :closure
-          require 'closure-compiler'
-          Closure::Compiler.new
-        when :uglifier
-          require 'uglifier'
-          Uglifier.new
-        when :yui
-          require 'yui/compressor'
-          YUI::JavaScriptCompressor.new
-        else
-          sym
-        end
-      end
-
-      def expand_css_compressor(sym)
-        case sym
-        when :yui
-          require 'yui/compressor'
-          YUI::CssCompressor.new
-        else
-          sym
-        end
-      end
   end
 end