Rails 3 - Issue with Nested Routes, It's not allow for a custom collection?

I have the following in my routes.rb:

resources :projects do
  resources :photos, :permissions
    collection do
        get 'yourcurrentprojects', 'userprojectpermission'
    end
end

But when I do, projects/3/permissions/userprojectpermission开发者_运维百科 i get a routing error: No route matches "/projects/3/permissions/userprojectpermission"

Did I define this wrong? Thank you for your help

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I think you should use projects/permissions/userprojectpermission.