Switch to asset_path and make it available in the Sprockets::Context (now you can do asset_path("logo.png") in a stylesheet.css.erb file and get fingerprinting)

actionpack/lib/action_view/helpers/asset_tag_helper.rb

@@ -275,7 +275,7 @@ module ActionView
       # plugin authors are encouraged to do so.
       def image_path(source)
         if config.use_sprockets
-          sprockets_asset_path(source)
+          asset_path(source)
         else
           asset_paths.compute_public_path(source, 'images')
         end
@@ -294,7 +294,7 @@ module ActionView
       #   video_path("http://www.railsapplication.com/vid/hd.avi") # => http://www.railsapplication.com/vid/hd.avi
       def video_path(source)
         if config.use_sprockets
-          sprockets_asset_path(source)
+          asset_path(source)
         else
           asset_paths.compute_public_path(source, 'videos')
         end
@@ -313,7 +313,7 @@ module ActionView
       #   audio_path("http://www.railsapplication.com/sounds/horse.wav") # => http://www.railsapplication.com/sounds/horse.wav
       def audio_path(source)
         if config.use_sprockets
-          sprockets_asset_path(source)
+          asset_path(source)
         else
           asset_paths.compute_public_path(source, 'audios')
         end

actionpack/lib/action_view/helpers/asset_tag_helpers/javascript_tag_helpers.rb

@@ -87,7 +87,7 @@ module ActionView
         #   javascript_path "http://www.railsapplication.com/js/xmlhr.js" # => http://www.railsapplication.com/js/xmlhr.js
         def javascript_path(source)
           if config.use_sprockets
-            sprockets_javascript_path(source)
+            asset_path(source, 'js')
           else
             asset_paths.compute_public_path(source, 'javascripts', 'js')
           end

actionpack/lib/action_view/helpers/asset_tag_helpers/stylesheet_tag_helpers.rb

@@ -64,7 +64,7 @@ module ActionView
         #   stylesheet_path "http://www.railsapplication.com/css/style.css" # => http://www.railsapplication.com/css/style.css
         def stylesheet_path(source)
           if config.use_sprockets
-            sprockets_stylesheet_path(source)
+            asset_path(source, 'css')
           else
             asset_paths.compute_public_path(source, 'stylesheets', 'css')
           end

actionpack/lib/action_view/helpers/sprockets_helper.rb

@@ -3,23 +3,14 @@ require 'uri'
 module ActionView
   module Helpers
     module SprocketsHelper
-      def sprockets_asset_path(source, default_ext = nil)
+      def asset_path(source, default_ext = nil)
         compute_sprockets_path(source, 'assets', default_ext)
       end
 
-      def sprockets_javascript_path(source)
-        sprockets_asset_path(source, 'js')
-      end
-
-      def sprockets_stylesheet_path(source)
-        sprockets_asset_path(source, 'css')
-      end
-      
-
       def sprockets_javascript_include_tag(source, options = {})
         options = {
           'type' => "text/javascript",
-          'src'  => sprockets_javascript_path(source)
+          'src'  => asset_path(source, 'js')
         }.merge(options.stringify_keys)
 
         content_tag 'script', "", options
@@ -30,7 +21,7 @@ module ActionView
           'rel'   => "stylesheet",
           'type'  => "text/css",
           'media' => "screen",
-          'href'  => sprockets_stylesheet_path(source)
+          'href'  => asset_path(source, 'css')
         }.merge(options.stringify_keys)
 
         tag 'link', options
@@ -60,10 +51,15 @@ module ActionView
         end
         
         def add_fingerprint(source, dir)
-          source.replace(assets.path($1, config.perform_caching, dir)) if source =~ /^\/#{dir}\/(.+)/
+          if source =~ /^\/#{dir}\/(.+)/
+            source.replace(assets.path($1, performing_caching?, dir))
+          end
         end
 
         def add_asset_host(source)
+          # When included in Sprockets::Context, there's no controller
+          return unless respond_to?(:controller)
+
           host = compute_asset_host(source)
 
           if controller.respond_to?(:request) && host && URI.parse(host).host
@@ -94,6 +90,16 @@ module ActionView
         def assets
           Rails.application.assets
         end
+        
+        def performing_caching?
+          # When included in Sprockets::Context, we need to ask the top-level config as the controller is not available
+          respond_to?(:config) ? config.perform_caching : Rails.application.config.action_controller.perform_caching
+        end
     end
   end
 end
+
+# FIXME: Temp hack for extending Sprockets::Context so 
+class Sprockets::Context
+  include ActionView::Helpers::SprocketsHelper
+end if defined?(Sprockets)

actionpack/test/template/sprockets_helper_test.rb

@@ -33,38 +33,38 @@ class SprocketsHelperTest < ActionView::TestCase
 
   test "asset path" do
     assert_equal "/assets/logo-9c0a079bdd7701d7e729bd956823d153.png",
-      sprockets_asset_path("logo.png")
+      asset_path("logo.png")
 
     assert_equal "/images/logo",
-      sprockets_asset_path("/images/logo")
+      asset_path("/images/logo")
     assert_equal "/images/logo.gif",
-      sprockets_asset_path("/images/logo.gif")
+      asset_path("/images/logo.gif")
 
     assert_equal "/dir/audio",
-      sprockets_asset_path("/dir/audio")
+      asset_path("/dir/audio")
 
     assert_equal "http://www.example.com/video/play",
-      sprockets_asset_path("http://www.example.com/video/play")
+      asset_path("http://www.example.com/video/play")
     assert_equal "http://www.example.com/video/play.mp4",
-      sprockets_asset_path("http://www.example.com/video/play.mp4")
+      asset_path("http://www.example.com/video/play.mp4")
   end
 
   test "javascript path" do
     assert_equal "/assets/application-d41d8cd98f00b204e9800998ecf8427e.js",
-      sprockets_javascript_path(:application)
+      asset_path(:application, "js")
 
     assert_equal "/assets/xmlhr-d41d8cd98f00b204e9800998ecf8427e.js",
-      sprockets_javascript_path("xmlhr")
+      asset_path("xmlhr", "js")
     assert_equal "/assets/dir/xmlhr-d41d8cd98f00b204e9800998ecf8427e.js",
-      sprockets_javascript_path("dir/xmlhr.js")
+      asset_path("dir/xmlhr.js", "js")
 
     assert_equal "/dir/xmlhr.js",
-      sprockets_javascript_path("/dir/xmlhr")
+      asset_path("/dir/xmlhr", "js")
 
     assert_equal "http://www.railsapplication.com/js/xmlhr",
-      sprockets_javascript_path("http://www.railsapplication.com/js/xmlhr")
+      asset_path("http://www.railsapplication.com/js/xmlhr", "js")
     assert_equal "http://www.railsapplication.com/js/xmlhr.js",
-      sprockets_javascript_path("http://www.railsapplication.com/js/xmlhr.js")
+      asset_path("http://www.railsapplication.com/js/xmlhr.js", "js")
   end
 
   test "javascript include tag" do
@@ -80,20 +80,16 @@ class SprocketsHelperTest < ActionView::TestCase
   end
 
   test "stylesheet path" do
-    assert_equal "/assets/application-d41d8cd98f00b204e9800998ecf8427e.css",
-      sprockets_stylesheet_path(:application)
+    assert_equal "/assets/application-d41d8cd98f00b204e9800998ecf8427e.css", asset_path(:application, "css")
 
-    assert_equal "/assets/style-d41d8cd98f00b204e9800998ecf8427e.css",
-      sprockets_stylesheet_path("style")
-    assert_equal "/assets/dir/style-d41d8cd98f00b204e9800998ecf8427e.css",
-      sprockets_stylesheet_path("dir/style.css")
-    assert_equal "/dir/style.css",
-      sprockets_stylesheet_path("/dir/style.css")
+    assert_equal "/assets/style-d41d8cd98f00b204e9800998ecf8427e.css", asset_path("style", "css")
+    assert_equal "/assets/dir/style-d41d8cd98f00b204e9800998ecf8427e.css", asset_path("dir/style.css", "css")
+    assert_equal "/dir/style.css", asset_path("/dir/style.css", "css")
 
     assert_equal "http://www.railsapplication.com/css/style",
-      sprockets_stylesheet_path("http://www.railsapplication.com/css/style")
+      asset_path("http://www.railsapplication.com/css/style", "css")
     assert_equal "http://www.railsapplication.com/css/style.css",
-      sprockets_stylesheet_path("http://www.railsapplication.com/css/style.css")
+      asset_path("http://www.railsapplication.com/css/style.css", "css")
   end
 
   test "stylesheet link tag" do