routes - Rails: root to not having desired behavior -

i trying set root 'hello#login', render view corresponding /hello/login/ path. when go root path, after having logged out of site user, 422.html page render upon rescuing cancan accessdenied exception in event user not logged in, per following code:

  rescue_from cancan::accessdenied |exception|     if current_user       redirect_to dashboard_index_path, :notice => exception.message       elsif request.env['path_info'] == '/'       render :file => "#{rails.root}/public/422.html", :status => 422, :layout => true     else       render :file => "#{rails.root}/public/422.html", :status => 422, :layout => false     end   end 

i thought had cancan permissions, realized when manually go /home/login/ path, page displays expected without raising cancan error. believe problem routes.rb file. doesn't make sense, since basic.

here routes.rb file:

  devise_for :users, activeadmin::devise.config   activeadmin.routes(self)    resources :users   resources :projects     resources :entries   end    resources :entries    root to: 'hello#login'    match 'dashboard/index' => 'dashboard#index', :as => :dashboard_index   match 'hello/login' => 'hello#login', :as => :hello_login 

here ability.rb model file:

class ability   include cancan::ability    def initialize(user)       if  user       can :manage, :all     else       cannot :manage, :all     end   end end 

finally here hello controller. can see, don't make calls authenticate should getting cancan problems. don't access models fail see why getting behavior getting:

class hellocontroller < applicationcontroller   def login   end end 

thanks help!

micha'el.