RuboCop configuration which has the same code style checking as official Ruby on Rails.

Official RoR RuboCop Configuration

Add this line to your application's Gemfile:

gem "rubocop-rails_config"

Add this line to your application's .rubocop.yml, or just run rails generate rubocop_rails_config:install:

inherit_gem:
  rubocop-rails_config:
    - config/rails.yml

If you'd like to customize the rubocop setting, you can override it.

For example, if you want to change TargetRubyVersion, you can do it like:

inherit_gem:
  rubocop-rails_config:
    - config/rails.yml

AllCops:
  TargetRubyVersion: 2.3

This overrides config/rails.yml setting with TargetRubyVersion: 2.3.

The gem is available as open source under the terms of the MIT License.