From d5f7253206122296a050d8fe2376990710859947 Mon Sep 17 00:00:00 2001
From: Sam Pohlenz <sam@sampohlenz.com>
Date: Fri, 1 Jul 2011 17:08:58 +0930
Subject: Refactor sprockets asset paths to allow for alternate asset
 environments

---
 actionpack/lib/sprockets/helpers/rails_helper.rb | 27 ++++++++++++++++--------
 1 file changed, 18 insertions(+), 9 deletions(-)

(limited to 'actionpack')

diff --git a/actionpack/lib/sprockets/helpers/rails_helper.rb b/actionpack/lib/sprockets/helpers/rails_helper.rb
index 63820cc76c..748541746c 100644
--- a/actionpack/lib/sprockets/helpers/rails_helper.rb
+++ b/actionpack/lib/sprockets/helpers/rails_helper.rb
@@ -16,7 +16,10 @@ module Sprockets
           else
             config.default_asset_host_protocol ||= :relative
           end
-          RailsHelper::AssetPaths.new(config, controller)
+          paths = RailsHelper::AssetPaths.new(config, controller)
+          paths.asset_environment = asset_environment
+          paths.asset_prefix      = asset_prefix
+          paths
         end
       end
 
@@ -76,9 +79,19 @@ module Sprockets
           params[:debug_assets] == 'true'
       end
 
+      def asset_prefix
+        Rails.application.config.assets.prefix
+      end
+
+      def asset_environment
+        Rails.application.assets
+      end
+
       class AssetPaths < ::ActionView::AssetPaths #:nodoc:
-        def compute_public_path(source, dir, ext=nil, include_host=true, protocol = nil)
-          super(source, Rails.application.config.assets.prefix, ext, include_host, protocol)
+        attr_accessor :asset_environment, :asset_prefix
+
+        def compute_public_path(source, dir, ext=nil, include_host=true, protocol=nil)
+          super(source, asset_prefix, ext, include_host, protocol)
         end
 
         # Return the filesystem path for the source
@@ -90,14 +103,14 @@ module Sprockets
           source = source.to_s
           return nil if is_uri?(source)
           source = rewrite_extension(source, nil, ext)
-          assets[source]
+          asset_environment[source]
         end
 
         def rewrite_asset_path(source, dir)
           if source[0] == ?/
             source
           else
-            assets.path(source, performing_caching?, dir)
+            asset_environment.path(source, performing_caching?, dir)
           end
         end
 
@@ -109,10 +122,6 @@ module Sprockets
           end
         end
 
-        def assets
-          Rails.application.assets
-        end
-
         # When included in Sprockets::Context, we need to ask the top-level config as the controller is not available
         def performing_caching?
           config.action_controller.present? ? config.action_controller.perform_caching : config.perform_caching
-- 
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