Nested Resources failing..?

Hey I was wondering if anyone else was having problems with nested
RESTful routes such as:

map.resources :posts do |posts|
  posts.resources :comments
end

?? It is not working for me, I have to declare it in the old prefix
way, and it works fine...

map.resource :comments, :path_prefix => '/posts/:post_id'

Just wondering if others are having the same trouble before I do some
digging around..

Please keep support requests on the rails-talk mailing list. In your post there, describe the specific issue you’re having. Thanks!

jeremy