allow absolute paths for the asset caches

Signed-off-by: NMichael Koziarski <michael@koziarski.com>

actionpack/lib/action_view/helpers/asset_tag_helper.rb

@@ -277,7 +277,7 @@ def javascript_include_tag(*sources)
 
         if ActionController::Base.perform_caching && cache
           joined_javascript_name = (cache == true ? "all" : cache) + ".js"
-          joined_javascript_path = File.join(JAVASCRIPTS_DIR, joined_javascript_name)
+          joined_javascript_path = File.join(joined_javascript_name[/^#{File::SEPARATOR}/] ? ASSETS_DIR : JAVASCRIPTS_DIR, joined_javascript_name)
 
           write_asset_file_contents(joined_javascript_path, compute_javascript_paths(sources, recursive)) unless File.exists?(joined_javascript_path)
           javascript_src_tag(joined_javascript_name, options)
@@ -417,7 +417,7 @@ def stylesheet_link_tag(*sources)
 
         if ActionController::Base.perform_caching && cache
           joined_stylesheet_name = (cache == true ? "all" : cache) + ".css"
-          joined_stylesheet_path = File.join(STYLESHEETS_DIR, joined_stylesheet_name)
+          joined_stylesheet_path = File.join(joined_stylesheet_name[/^#{File::SEPARATOR}/] ? ASSETS_DIR : STYLESHEETS_DIR, joined_stylesheet_name)
 
           write_asset_file_contents(joined_stylesheet_path, compute_stylesheet_paths(sources, recursive)) unless File.exists?(joined_stylesheet_path)
           stylesheet_tag(joined_stylesheet_name, options)
@@ -679,4 +679,4 @@ def collect_asset_files(*path)
         end
     end
   end
-end
\ No newline at end of file
+end

actionpack/test/template/asset_tag_helper_test.rb

@@ -317,9 +317,17 @@ def test_caching_javascript_include_tag_when_caching_on
 
     assert File.exist?(File.join(ActionView::Helpers::AssetTagHelper::JAVASCRIPTS_DIR, 'money.js'))
 
+    assert_dom_equal(
+      %(<script src="http://a0.example.com/absolute/test.js" type="text/javascript"></script>),
+      javascript_include_tag(:all, :cache => "/absolute/test")
+    )
+
+    assert File.exist?(File.join(ActionView::Helpers::AssetTagHelper::ASSETS_DIR, 'absolute', 'test.js'))
+
   ensure
     FileUtils.rm_f(File.join(ActionView::Helpers::AssetTagHelper::JAVASCRIPTS_DIR, 'all.js'))
     FileUtils.rm_f(File.join(ActionView::Helpers::AssetTagHelper::JAVASCRIPTS_DIR, 'money.js'))
+    FileUtils.rm_f(File.join(ActionView::Helpers::AssetTagHelper::ASSETS_DIR, 'absolute'))
   end
 
   def test_caching_javascript_include_tag_when_caching_on_with_proc_asset_host
@@ -547,9 +555,17 @@ def test_caching_stylesheet_link_tag_when_caching_on
     )
 
     assert File.exist?(File.join(ActionView::Helpers::AssetTagHelper::STYLESHEETS_DIR, 'money.css'))
+
+    assert_dom_equal(
+      %(<link href="http://a0.example.com/absolute/test.css" media="screen" rel="stylesheet" type="text/css" />),
+      stylesheet_link_tag(:all, :cache => "/absolute/test")
+    )
+
+    assert File.exist?(File.join(ActionView::Helpers::AssetTagHelper::ASSETS_DIR, 'absolute', 'test.css'))
   ensure
     FileUtils.rm_f(File.join(ActionView::Helpers::AssetTagHelper::STYLESHEETS_DIR, 'all.css'))
     FileUtils.rm_f(File.join(ActionView::Helpers::AssetTagHelper::STYLESHEETS_DIR, 'money.css'))
+    FileUtils.rm_f(File.join(ActionView::Helpers::AssetTagHelper::ASSETS_DIR, 'absolute'))
   end
 
   def test_caching_stylesheet_link_tag_when_caching_on_with_proc_asset_host