2 files changed, 20 insertions, 1 deletions
diff --git a/actionpack/lib/action_controller/abstract/callbacks.rb b/actionpack/lib/action_controller/abstract/callbacks.rb
index 6e15b3e81b..3aff83a209 100644
--- a/actionpack/lib/action_controller/abstract/callbacks.rb
+++ b/actionpack/lib/action_controller/abstract/callbacks.rb
@@ -5,7 +5,7 @@ module AbstractController
     depends_on ActiveSupport::NewCallbacks
 
     included do
-      define_callbacks :process_action
+      define_callbacks :process_action, "response_body"
     end
 
     def process_action
diff --git a/actionpack/test/abstract_controller/callbacks_test.rb b/actionpack/test/abstract_controller/callbacks_test.rb
index 410b1e57a6..1de60868c3 100644
--- a/actionpack/test/abstract_controller/callbacks_test.rb
+++ b/actionpack/test/abstract_controller/callbacks_test.rb
@@ -193,5 +193,24 @@ module AbstractController
       end
     end
     
+    class SetsResponseBody < ControllerWithCallbacks
+      before_filter :set_body
+      
+      def index
+        self.response_body = "Fail"
+      end
+      
+      def set_body
+        self.response_body = "Success"
+      end
+    end
+    
+    class TestHalting < ActiveSupport::TestCase
+      test "when a callback sets the response body, the action should not be invoked" do
+        result = SetsResponseBody.process(:index)
+        assert_equal "Success", result.response_body
+      end
+    end
+    
   end
 end
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