Add custom polymorphic mapping

Allow the use of `direct` to specify custom mappings for polymorphic_url, e.g:

  resource :basket
  direct(class: "Basket") { [:basket] }

This will then generate the following:

  >> link_to "Basket", @basket
  => <a href="/basket">Basket</a>

More importantly it will generate the correct url when used with `form_for`.

Fixes #1769.

1 files changed, 4 insertions, 4 deletions

diff --git a/actionview/lib/action_view/test_case.rb b/actionview/lib/action_view/test_case.rb
index 2b981caa65..ae4fec4337 100644
--- a/actionview/lib/action_view/test_case.rb
+++ b/actionview/lib/action_view/test_case.rb
@@ -124,6 +124,10 @@ module ActionView
         @_rendered_views ||= RenderedViewsCollection.new
       end
 
+      def _routes
+        @controller._routes if @controller.respond_to?(:_routes)
+      end
+
       # Need to experiment if this priority is the best one: rendered => output_buffer
       class RenderedViewsCollection
         def initialize
@@ -258,10 +262,6 @@ module ActionView
         end]
       end
 
-      def _routes
-        @controller._routes if @controller.respond_to?(:_routes)
-      end
-
       def method_missing(selector, *args)
         begin
           routes = @controller.respond_to?(:_routes) && @controller._routes