Router for nested resources in a "not usual" Ruby on Rails way

I am using Ruby on Rails 3.0.7 and I am trying to set nested resource routing to make it to work in a "not regular" RoR way.

In my routes.rb file I have

resources :articles do
  resources :categories, :only => [:index], :controller => 'articles/categories' # The related controller is Articles::CategoriesController
end

so that I can browse following URLs:

<my_site>/articles/1/categories
<my_site>/articles/2/categories
...

What I would to do is to access new, 开发者_JAVA技巧edit and show controller actions for categories by using the same articles/categories controller used for the nested resource stated above (that is, Articles::CategoriesController) and by accessing these URLs:

<my_site>/articles/categories/new
<my_site>/articles/categories/edit
<my_site>/articles/categories/1
<my_site>/articles/categories/2
...

How can I do that? How I must code the router?

---

Maybe I can do something by using the router collection method like this

resources :articles do
  collection do
   # match something here for the Articles::CategoriesController...
  end

  resources :categories, :only => [:index], :controller => 'articles/categories'
end

but I don't know how to do that.

---

I'm not real sure what you're trying to do with those routes, so I'm not quite sure how to answer your questions. If your intent is to be able to add a new category for a particular article, or edit all the categories for a particular article, you have to pass an ID for the article. If you're trying to create a new article and a new category all at once, you don't need category in the route, just the article and you can do something like form_for([@article,@category]) in your form and use the build method in your controller. If you can clarify, I might be able to help you further (in other words, it's not hard to construct those routes -- but it depends on what you want to do with them.