Run callbacks from object's metaclass [#575 state:resolved]

1 files changed, 9 insertions, 1 deletions

diff --git a/activesupport/lib/active_support/callbacks.rb b/activesupport/lib/active_support/callbacks.rb
index 9c59b7ac76..f125a56246 100644
--- a/activesupport/lib/active_support/callbacks.rb
+++ b/activesupport/lib/active_support/callbacks.rb
@@ -269,7 +269,15 @@ module ActiveSupport
     #   pass
     #   stop
     def run_callbacks(kind, options = {}, &block)
-      self.class.send("#{kind}_callback_chain").run(self, options, &block)
+      callback_chain_method = "#{kind}_callback_chain"
+
+      # Meta class inherits Class so we don't have to merge it in 1.9
+      if RUBY_VERSION >= '1.9'
+        metaclass.send(callback_chain_method).run(self, options, &block)
+      else
+        callbacks = self.class.send(callback_chain_method) | metaclass.send(callback_chain_method)
+        callbacks.run(self, options, &block)
+      end
     end
   end
 end