Mainly used if you have actions on the same controller that deals with “admin” and “non-admin” users. This eliminates the need to put a lot of redundant checking on actions just to differentiate from these roles. And also, it’s a nice way to organize your codes.
map.namespace :admin do |admin| admin.resources :posts end
class Admin::PostsController < ApplicationController before_filter :assert_if_admin # some code. . . private def assert_if_admin unless current_user.is_admin? redirect_to root_path end end end
and that’s it! just change the routes of your links to point to specific actions on the namespaced controller
also, if you have form_for @post added in your code, you can change it to use the namespaced route to: form_for [:admin, @post], this will generate a path /admin/posts/ to your form