lib/active_model/callbacks.rb in activemodel-4.2.0.beta3 vs lib/active_model/callbacks.rb in activemodel-4.2.0.beta4

@@ -95,9 +95,12 @@
     #   class AnotherClass
     #     def self.before_create( obj )
     #       # obj is the MyModel instance that the callback is being called on
     #     end
     #   end
+    #
+    # NOTE: +method_name+ passed to `define_model_callbacks` must not end with
+    # `!`, `?` or `=`.
     def define_model_callbacks(*callbacks)
       options = callbacks.extract_options!
       options = {
         terminator: ->(_,result) { result == false },
         skip_after_callbacks_if_terminated: true,