Added support for naming concrete classes in sweeper declarations [DHH]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8819 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Added support for naming concrete classes in sweeper declarations [DHH]
+
 * Remove ERB trim variables from trace template in case ActionView::Base.erb_trim_mode is changed in the application.  #10098 [tpope, kampers]
 
 * Fix typo in form_helper documentation.  #10650 [xaviershay, kampers]

actionpack/lib/action_controller/caching/sweeping.rb

@@ -22,6 +22,13 @@ module ActionController #:nodoc:
     #   end
     #
     # In the example above, four actions are cached and three actions are responsible for expiring those caches.
+    #
+    # You can also name an explicit class in the declaration of a sweeper, which is needed if the sweeper is in a module:
+    #
+    #   class ListsController < ApplicationController
+    #     caches_action :index, :show, :public, :feed
+    #     cache_sweeper OpenBar::Sweeper, :only => [ :edit, :destroy, :share ]
+    #   end    
     module Sweeping
       def self.included(base) #:nodoc:
         base.extend(ClassMethods)
@@ -31,9 +38,10 @@ module ActionController #:nodoc:
         def cache_sweeper(*sweepers)
           return unless perform_caching
           configuration = sweepers.extract_options!
+
           sweepers.each do |sweeper|
             ActiveRecord::Base.observers << sweeper if defined?(ActiveRecord) and defined?(ActiveRecord::Base)
-            sweeper_instance = Object.const_get(Inflector.classify(sweeper)).instance
+            sweeper_instance = (sweeper.is_a?(Symbol) ? Object.const_get(Inflector.classify(sweeper)) : sweeper).instance
 
             if sweeper_instance.is_a?(Sweeper)
               around_filter(sweeper_instance, :only => configuration[:only])