From b3a6fa63343bd69bc895241f60b8d2bd571171a2 Mon Sep 17 00:00:00 2001
From: Michael Rykov <mrykov@gmail.com>
Date: Thu, 14 Mar 2013 11:15:14 -0700
Subject: [PATCH] Ensure that ActionController includes MimeResponds

---
 lib/action_controller/serialization.rb | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/action_controller/serialization.rb b/lib/action_controller/serialization.rb
index c19d1ea3..80c2b814 100644
--- a/lib/action_controller/serialization.rb
+++ b/lib/action_controller/serialization.rb
@@ -30,6 +30,11 @@ module ActionController
     included do
       class_attribute :_serialization_scope
       self._serialization_scope = :current_user
+
+      unless self.respond_to?(:responder=)
+        include ActionController::MimeResponds
+      end
+
       self.responder = ActiveModel::Serializer::Responder
       self.respond_to :json