How to create a route for two namespaces - ruby-on-rails

Question

I'm trying to split my rails project in a front-end for regular users and a back-end for admins. Therefore i have created a namespace 'admin' so that i can easily control admin.After creating the admin namespace the I changed the routes from
Rails.application.routes.draw do
authenticated :user do
root to: 'dashboard#index', as: :authenticated_root
end
unauthenticated do
root to: "home#index"
end
match '(errors)/:status', to: 'errors#show', constraints: { status: /\d{3}/ }, via: :all
devise_for :users, skip: [:registrations]
as :user do
get 'my/profile/edit' => 'devise/registrations#edit', as: 'edit_user_registration'
patch 'my/profile' => 'devise/registrations#update', as: 'user_registration'
end
resources :users
resources :events do
patch :archive, :unarchive
end
end
to this
Rails.application.routes.draw do
namespace :admin do
authenticated :user do
root to: 'dashboard#index', as: :authenticated_root
end
unauthenticated do
root to: "home#index"
end
match '(errors)/:status', to: 'errors#show', constraints: { status: /\d{3}/ }, via: :all
devise_for :users, skip: [:registrations]
as :user do
get 'my/profile/edit' => 'devise/registrations#edit', as: 'edit_user_registration'
patch 'my/profile' => 'devise/registrations#update', as: 'user_registration'
end
resources :users
resources :events do
patch :archive, :unarchive
end
end
end
After these change I got this page
Rails::WelcomeController#index as HTML
Does anyone know how to do this?

Answer 1

If I understand what you ask, you want to put everything admin related into the admin namespace, but leave everything (for example, the root page) outside.
But in your routing example, you put everything inside the admin namespace, even the root page.
So generally, you want something like:
Rails.application.routes.draw do
namespace :admin do
# put admin stuff here
end
# put everything NOT in the admin interface outside your namespace
# you want a root route here. That's the page that'll be displayed by default
root to :your_root_stuff
# and if you have users who aren't admins, devise and authenticated routes too
# ... other stuff
end