2 files changed, 28 insertions, 1 deletions
diff --git a/actionpack/lib/action_controller/railtie.rb b/actionpack/lib/action_controller/railtie.rb
index cd2dfafbe6..7496dd57b2 100644
--- a/actionpack/lib/action_controller/railtie.rb
+++ b/actionpack/lib/action_controller/railtie.rb
@@ -51,6 +51,7 @@ module ActionController
 
       ActiveSupport.on_load(:action_controller) do
         include app.routes.url_helpers
+        include app.routes.mounted_helpers(:app)
         options.each { |k,v| send("#{k}=", v) }
       end
     end
@@ -63,4 +64,4 @@ module ActionController
       ActionController::Routing::Routes = proxy
     end
   end
-end
-\ No newline at end of file
+end
diff --git a/actionpack/lib/action_controller/railties/url_helpers.rb b/actionpack/lib/action_controller/railties/url_helpers.rb
new file mode 100644
index 0000000000..3e6f211cda
--- /dev/null
+++ b/actionpack/lib/action_controller/railties/url_helpers.rb
@@ -0,0 +1,26 @@
+module ActionController
+  module Railties
+
+    module UrlHelpers
+      def self.with(routes)
+        Module.new do
+          define_method(:inherited) do |klass|
+            super(klass)
+            klass.send(:include, routes.url_helpers)
+          end
+        end
+      end
+    end
+
+    module MountedHelpers
+      def self.with(routes, name = nil)
+        Module.new do
+          define_method(:inherited) do |klass|
+            super(klass)
+            klass.send(:include, routes.mounted_helpers(name))
+          end
+        end
+      end
+    end
+  end
+end