Rails 3.2.3 namespaced controllers being overridden by global controllers with same name
controllers, nomethoderror, ruby, ruby-on-rails, ruby-on-rails-3.2
Solution
This is happening because you also happen to have an `Admin` model (a Class) with the same name as your namespace.
This Google group thread provides a good explanation of what exactly is happening.
To fix, I would either rename the model to `AdminUser` or if that is not a possibility, renaming the namespace will also fix the issue.
Problem
When the global application controller is loaded first, the namespaced application controller does not load when loading pages within that namespace. The application controller looks like this: ``` class ApplicationController < ActionController::Base protect_from_forgery end ``` And the namespaced application controller looks like this: ``` class Admin::ApplicationController < ApplicationController def authenticate_admin! if current_admin.nil? redirect_to new_admin_session_url end end private def current_admin @current_admin ||= Admin.find(session[:admin_id]) if session[:admin_id] end helper_method :current_admin end ``` When we use the before_filter "authenticate_admin!" like this: ``` class Admin::AssetsController < Admin::ApplicationController before_filter :authenticate_admin! end ``` A "NoMethodError in Admin::AssetsController#new" is thrown. This only occurs when we hit the global route before the namespaced route. If the server is restarted and the namespaced route is loaded first everything works properly.