rails Controller Namespaces and Routing

You may wish to organize groups of controllers under a namespace. Most commonly, you might group a number of administrative controllers under an Admin:: namespace. You would place these controllers under the app/controllers/admin directory, and you can group them together in your router:

namespace :admin do
  resources :posts , :comments
end

This will create a number of routes for each of the posts and comments controller. ForAdmin::PostsController, Rails will create:

HTTP Verb	Path	action	named helper
GET	/admin/posts	index	admin_posts_path
GET	/admin/posts/new	new	new_admin_post_path
POST	/admin/posts	create	admin_posts_path
GET	/admin/posts/:id	show	admin_post_path(:id)
GET	/admin/posts/:id/edit	edit	edit_admin_post_path(:id)
PUT	/admin/posts/:id	update	admin_post_path(:id)
DELETE	/admin/posts/:id	destroy	admin_post_path(:id)

If you want to route /posts (without the prefix /admin) to Admin::PostsController, you could use

scope :module => "admin" do
  resources :posts , :comments
end

or, for a single case

resources :posts , :module => "admin"

If you want to route /admin/posts to PostsController (without the Admin:: module prefix), you could use

scope "/admin" do
  resources :posts , :comments
end

or, for a single case

resources :posts , :path => "/admin/posts"

In each of these cases, the named routes remain the same as if you did not use scope. In the last case, the following paths map to PostsController:

HTTP Verb	Path	action	named helper
GET	/admin/posts	index	posts_path
GET	/admin/posts/new	new	new_post_path
POST	/admin/posts	create	posts_path
GET	/admin/posts/:id	show	post_path(:id)
GET	/admin/posts/:id/edit	edit	edit_post_path(:id)
PUT	/admin/posts/:id	update	post_path(:id)
DELETE	/admin/posts/:id	destroy	post_path(:id)