Rails: rails_admin

rails_admin installed.

$ vim Gemfile

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gem 'rails_admin'

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$ bundle install

$ rails g rails_admin:install

$ rake db:migrate

$ vim config/routes.rb

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  2   devise_for :admin_users

  3   mount RailsAdmin::Engine => '/admin', as: 'rails_admin'

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Japanese
https://gist.github.com/mshibuya/1662352#file-rails_admin-ja-yml