From 67247ca8ee850223193a5fe77f5460aefc0336c0 Mon Sep 17 00:00:00 2001
From: Yehuda Katz + Carl Lerche <ykatz+clerche@engineyard.com>
Date: Tue, 19 May 2009 17:41:17 -0700
Subject: Corrected new callbacks semantics with regards to using objects for
 around filters.

---
 activesupport/lib/active_support/new_callbacks.rb | 10 ++--
 activesupport/test/new_callbacks_test.rb          | 62 +++++++++++++++++++++++
 2 files changed, 69 insertions(+), 3 deletions(-)

(limited to 'activesupport')

diff --git a/activesupport/lib/active_support/new_callbacks.rb b/activesupport/lib/active_support/new_callbacks.rb
index 9316d6d2b6..f8108780f1 100644
--- a/activesupport/lib/active_support/new_callbacks.rb
+++ b/activesupport/lib/active_support/new_callbacks.rb
@@ -296,9 +296,13 @@ module ActiveSupport
           method_name
         else
           kind, name = @kind, @name
-          @klass.send(:define_method, method_name) do
-            filter.send("#{kind}_#{name}", self)
-          end
+          @klass.send(:define_method, "#{method_name}_object") { filter }
+
+          @klass.class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
+            def #{method_name}(&blk)
+              #{method_name}_object.send("#{kind}_#{name}", self, &blk)
+            end
+          RUBY_EVAL
           method_name
         end
       end
diff --git a/activesupport/test/new_callbacks_test.rb b/activesupport/test/new_callbacks_test.rb
index dec6106ac1..7bec47224d 100644
--- a/activesupport/test/new_callbacks_test.rb
+++ b/activesupport/test/new_callbacks_test.rb
@@ -396,6 +396,68 @@ module NewCallbacksTest
     end
   end
 
+  class CallbackObject
+    def before_save(caller)
+      caller.record << "before"
+    end
+    
+    def around_save(caller)
+      caller.record << "around before"
+      yield
+      caller.record << "around after"
+    end
+  end
+
+  class UsingObjectBefore
+    include ActiveSupport::NewCallbacks
+    
+    define_callbacks :save
+    save_callback :before, CallbackObject.new
+    
+    attr_accessor :record
+    def initialize
+      @record = []
+    end
+    
+    def save
+      _run_save_callbacks do
+        @record << "yielded"
+      end
+    end 
+  end
+
+  class UsingObjectAround
+    include ActiveSupport::NewCallbacks
+    
+    define_callbacks :save
+    save_callback :around, CallbackObject.new
+    
+    attr_accessor :record
+    def initialize
+      @record = []
+    end
+    
+    def save
+      _run_save_callbacks do
+        @record << "yielded"
+      end
+    end 
+  end
+  
+  class UsingObjectTest < Test::Unit::TestCase
+    def test_before_object
+      u = UsingObjectBefore.new
+      u.save
+      assert_equal ["before", "yielded"], u.record
+    end
+    
+    def test_around_object
+      u = UsingObjectAround.new
+      u.save
+      assert_equal ["around before", "yielded", "around after"], u.record
+    end    
+  end
+
   class CallbackTerminatorTest < Test::Unit::TestCase
     def test_termination
       terminator = CallbackTerminator.new
-- 
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