2 files changed, 11 insertions, 3 deletions
diff --git a/actionpack/lib/sprockets/assets.rake b/actionpack/lib/sprockets/assets.rake
index 7764bd401a..65f0ad4cc8 100644
--- a/actionpack/lib/sprockets/assets.rake
+++ b/actionpack/lib/sprockets/assets.rake
@@ -10,8 +10,7 @@ namespace :assets do
     else
       require "fileutils"
       Rake::Task["tmp:cache:clear"].invoke
-      Rails.application.initialize!(:assets)
-      Sprockets::Bootstrap.new(Rails.application).run
+      Rake::Task["assets:environment"].invoke
 
       unless Rails.application.config.assets.enabled
         raise "Cannot precompile assets if sprockets is disabled. Please set config.assets.enabled to true"
@@ -40,9 +39,14 @@ namespace :assets do
   end
 
   desc "Remove compiled assets"
-  task :clean => [:environment, 'tmp:cache:clear'] do
+  task :clean => ['assets:environment', 'tmp:cache:clear'] do
     config = Rails.application.config
     public_asset_path = File.join(Rails.public_path, config.assets.prefix)
     rm_rf public_asset_path, :secure => true
   end
+
+  task :environment do
+    Rails.application.initialize!(:assets)
+    Sprockets::Bootstrap.new(Rails.application).run
+  end
 end
diff --git a/actionpack/lib/sprockets/helpers/rails_helper.rb b/actionpack/lib/sprockets/helpers/rails_helper.rb
index 1e0e9bef77..fe37553fc1 100644
--- a/actionpack/lib/sprockets/helpers/rails_helper.rb
+++ b/actionpack/lib/sprockets/helpers/rails_helper.rb
@@ -60,6 +60,10 @@ module Sprockets
         options[:body] ? "#{path}?body=1" : path
       end
 
+      def path_to_image(source)
+        asset_paths.compute_public_path(source, asset_prefix)
+      end
+
     private
       def debug_assets?
         compile_assets? && (Rails.application.config.assets.debug || params[:debug_assets])