1 files changed, 7 insertions, 1 deletions
diff --git a/actionpack/lib/action_dispatch/routing/polymorphic_routes.rb b/actionpack/lib/action_dispatch/routing/polymorphic_routes.rb
index 013cf93dbc..055761fed5 100644
--- a/actionpack/lib/action_dispatch/routing/polymorphic_routes.rb
+++ b/actionpack/lib/action_dispatch/routing/polymorphic_routes.rb
@@ -97,7 +97,7 @@ module ActionDispatch
         end
 
         record = extract_record(record_or_hash_or_array)
-        record = record.to_model if record.respond_to?(:to_model)
+        record = convert_to_model(record)
 
         args = Array === record_or_hash_or_array ?
           record_or_hash_or_array.dup :
@@ -124,6 +124,8 @@ module ActionDispatch
           args.last.kind_of?(Hash) ? args.last.merge!(url_options) : args << url_options
         end
 
+        args.collect! { |a| convert_to_model(a) }
+
         (proxy || self).send(named_route, *args)
       end
 
@@ -154,6 +156,10 @@ module ActionDispatch
           options[:action] ? "#{options[:action]}_" : ''
         end
 
+        def convert_to_model(object)
+          object.respond_to?(:to_model) ? object.to_model : object
+        end
+
         def routing_type(options)
           options[:routing_type] || :url
         end