~/projects/as[master*]: rake routes | grep cat
   donation_donation_categories GET    /donations/:donation_id/donation_categories(.:format)          {:controller=>"donation_categories", :action=>"index"}
                                POST   /donations/:donation_id/donation_categories(.:format)          {:controller=>"donation_categories", :action=>"create"}
 new_donation_donation_category GET    /donations/:donation_id/donation_categories/new(.:format)      {:controller=>"donation_categories", :action=>"new"}
edit_donation_donation_category GET    /donations/:donation_id/donation_categories/:id/edit(.:format) {:controller=>"donation_categories", :action=>"edit"}
     donation_donation_category GET    /donations/:donation_id/donation_categories/:id(.:format)      {:controller=>"donation_categories", :action=>"show"}
                                PUT    /donations/:donation_id/donation_categories/:id(.:format)      {:controller=>"donation_categories", :action=>"update"}
                                DELETE /donations/:donation_id/donation_categories/:id(.:format)      {:controller=>"donation_categories", :action=>"destroy"}