Move sprockets initializers back to application

railties/lib/rails/application.rb

@@ -137,6 +137,33 @@ module Rails
       @config ||= Application::Configuration.new(find_root_with_flag("config.ru", Dir.pwd))
     end
 
+    def assets
+      @assets ||= build_asset_environment
+    end
+
+    def build_asset_environment
+      return nil if !config.use_sprockets
+      require 'sprockets'
+      env = Sprockets::Environment.new(root.to_s)
+      env.static_root = root.join("public/assets")
+      env
+    end
+
+    initializer :add_sprockets_paths do |app|
+      [
+       "app/javascripts",
+       "app/stylesheets",
+       "vendor/plugins/*/app/javascripts",
+       "vendor/plugins/*/app/stylesheets",
+       "vendor/plugins/*/javascripts",
+       "vendor/plugins/*/stylesheets"
+      ].each do |pattern|
+        Dir[app.root.join(pattern)].each do |dir|
+          app.assets.paths << dir
+        end
+      end
+    end
+
   protected
 
     def default_asset_path

railties/lib/rails/application/configuration.rb

@@ -9,7 +9,8 @@ module Rails
                     :filter_parameters, :helpers_paths, :logger,
                     :preload_frameworks, :reload_plugins,
                     :secret_token, :serve_static_assets, :session_options,
-                    :time_zone, :whiny_nils
+                    :time_zone, :whiny_nils,
+                    :use_sprockets, :compile_assets
 
       attr_writer :log_level
 
@@ -28,6 +29,8 @@ module Rails
         @log_level                   = nil
         @middleware                  = app_middleware
         @generators                  = app_generators
+        @use_sprockets               = false
+        @compile_assets              = []
       end
 
       def compiled_asset_path

railties/lib/rails/application/finisher.rb

@@ -33,6 +33,14 @@ module Rails
         end
       end
 
+      initializer :add_sprockets_route do |app|
+        if config.use_sprockets
+          app.routes.append do
+            mount app.assets => "/assets"
+          end
+        end
+      end
+
       initializer :build_middleware_stack do
         build_middleware_stack
       end

railties/lib/rails/engine.rb

@@ -433,56 +433,11 @@ module Rails
     end
 
     def routes
-      @routes ||= build_route_set
+      @routes ||= ActionDispatch::Routing::RouteSet.new
       @routes.append(&Proc.new) if block_given?
       @routes
     end
 
-    def build_route_set
-      routes = ActionDispatch::Routing::RouteSet.new
-
-      engine = self
-      routes.append do
-        if engine.config.use_sprockets
-          routes.add_route(engine.assets, {:path_info => "/assets"}, {}, {}, nil, false)
-        end
-      end
-
-      routes
-    end
-
-    def self.default_sprockets_paths
-      [
-       "app/javascripts",
-       "app/stylesheets",
-       "vendor/plugins/*/app/javascripts",
-       "vendor/plugins/*/app/stylesheets",
-       "vendor/plugins/*/javascripts",
-       "vendor/plugins/*/stylesheets"
-      ]
-    end
-
-    def assets
-      @assets ||= build_asset_environment
-    end
-
-    def build_asset_environment
-      return nil if !config.use_sprockets
-
-      require 'sprockets'
-
-      env = Sprockets::Environment.new(root.to_s)
-      env.static_root = root.join("public/assets")
-
-      self.class.default_sprockets_paths.each do |pattern|
-        Dir[root.join(pattern)].each do |dir|
-          env.paths << dir
-        end
-      end
-
-      env
-    end
-
     def initializers
       initializers = []
       railties.all { |r| initializers += r.initializers }

railties/lib/rails/engine/configuration.rb

@@ -5,15 +5,12 @@ module Rails
     class Configuration < ::Rails::Railtie::Configuration
       attr_reader :root
       attr_writer :middleware, :eager_load_paths, :autoload_once_paths, :autoload_paths
-      attr_accessor :plugins, :asset_path, :use_sprockets, :compile_assets
+      attr_accessor :plugins, :asset_path
 
       def initialize(root=nil)
         super()
         @root = root
         @generators = app_generators.dup
-
-        @use_sprockets  = false
-        @compile_assets = []
       end
 
       # Returns the middleware stack for the engine.