1 files changed, 10 insertions, 4 deletions
diff --git a/actionmailer/lib/action_mailer/railties/routes_helpers.rb b/actionmailer/lib/action_mailer/railties/routes_helpers.rb
index 3464ec38e2..b16d581fc6 100644
--- a/actionmailer/lib/action_mailer/railties/routes_helpers.rb
+++ b/actionmailer/lib/action_mailer/railties/routes_helpers.rb
@@ -1,10 +1,16 @@
 module ActionMailer
   module Railties
     module RoutesHelpers
-      def inherited(klass)
-        super(klass)
-        if namespace = klass.parents.detect {|m| m.respond_to?(:_railtie) }
-          klass.send(:include, namespace._railtie.routes.url_helpers)
+      def self.with(routes)
+        Module.new do
+          define_method(:inherited) do |klass|
+            super(klass)
+            if namespace = klass.parents.detect {|m| m.respond_to?(:_railtie) }
+              klass.send(:include, namespace._railtie.routes.url_helpers)
+            else
+              klass.send(:include, routes.url_helpers)
+            end
+          end
         end
       end
     end