Gem 'rails_admin' , bundle, rails g rails_admin:install, wybieramy model czyli my mamy User, w config/initializers/rails_admin.rb dodajemy nasze ustawienia konfiguracyjne: config.authenticate_with do/authenticate_or_request_with_http_basic do |username, password|/username == 'Master' &&/ password == 'alamakota'/end/config.current_user_method(&:current_user)/end. Nstepnie w routsach wywalamy sciezke i dajemy nasza :  mount RailsAdmin::Engine => '/user/god', as: 'rails_admin'. Korzystamy z : https://github.com/sferik/rails_admin, oraz https://github.com/sferik/rails_admin/wiki/Devise