1 files changed, 4 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/routing/route_set.rb b/actionpack/lib/action_dispatch/routing/route_set.rb
index 14c5d663a3..c2583e2be6 100644
--- a/actionpack/lib/action_dispatch/routing/route_set.rb
+++ b/actionpack/lib/action_dispatch/routing/route_set.rb
@@ -94,6 +94,10 @@ module ActionDispatch
           @module  = Module.new
         end
 
+        def route_defined?(name)
+          @module.method_defined? name
+        end
+
         def helper_names
           @helpers.map(&:to_s)
         end