Handle categories and (nested) resources

I have an application, built with Rails 3.1.3, that has products and categories. The categories are related to other categories, so a category can be a parent or a child category. The products are then related to a child category.

Now, I’m thinking about how I should define the routes. Is it a good idea to somehow nest the categories and products resources? Ideally, I would like URLs like this:

example.com/parent/child/product-1234

like this:

example.com/clothes/underwear/some-socks-1234

or maybe like this to keep it restful?

example.com/p/clothes/c/underwear/

But maybe that’s a bit messy to achieve with the routes? I would have to nest the category with itself I guess?

Any ideas on how to achieve something like this?

Do I create the category routes like this:

resources :categories, :as => “parent” do

resources :categories, :as => “child”

end

or similar?

It’s not that important to have the product nested inside the categories. Maybe it will just make it hard to manage…

Maybe it is better to just create two models/controllers and nest them? That way I get restful routes easily.