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RuboCop Rails

Gem Version CircleCI

A RuboCop extension focused on enforcing Rails best practices and coding conventions.

Note: This repository manages rubocop-rails gem (>= 2.0.0). rubocop-rails gem (<= 1.5.0) has been renamed to rubocop-rails_config gem.

Installation

Just install the rubocop-rails gem

gem install rubocop-rails

or if you use bundler put this in your Gemfile

gem 'rubocop-rails'

Usage

You need to tell RuboCop to load the Rails extension. There are three ways to do this:

RuboCop configuration file

Put this into your .rubocop.yml.

require: rubocop-rails

Alternatively, use the following array notation when specifying multiple extensions.

require:
  - rubocop-other-extension
  - rubocop-rails

Now you can run rubocop and it will automatically load the RuboCop Rails cops together with the standard cops.

Command line

rubocop --require rubocop-rails

Note: --rails option is required while rubocop command supports --rails option.

Rake task

RuboCop::RakeTask.new do |task|
  task.requires << 'rubocop-rails'
end

The Cops

All cops are located under lib/rubocop/cop/rails, and contain examples/documentation.

In your .rubocop.yml, you may treat the Rails cops just like any other cop. For example:

Rails/FindBy:
  Exclude:
    - lib/example.rb

Compatibility

Rails cops support the following versions:

  • Rails 4.0+

Contributing

Checkout the contribution guidelines.

License

rubocop-rails is MIT licensed. See the accompanying file for the full text.