From 330cafd3d26b0c5fbd7951407450804755c285c0 Mon Sep 17 00:00:00 2001
From: Jack Dempsey <jack.dempsey@gmail.com>
Date: Fri, 25 Mar 2011 03:07:53 +0800
Subject: [PATCH] use reference if available otherwise ref

---
 lib/devise.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/devise.rb b/lib/devise.rb
index 429eec6d..9fc667a6 100644
--- a/lib/devise.rb
+++ b/lib/devise.rb
@@ -243,7 +243,9 @@ module Devise
 
   # Set the mailer reference object to access the mailer.
   def self.mailer=(class_name)
-    @@mailer_ref = ActiveSupport::Dependencies.reference(class_name)
+    @@mailer_ref = ActiveSupport::Dependencies.respond_to?(:reference)
+                    ? ActiveSupport::Dependencies.reference(class_name)
+                    : ActiveSupport::Dependencies.ref(class_name)
   end
   self.mailer = "Devise::Mailer"