RBS Rails

RBS files generator for Ruby on Rails.


Add this line to your application's Gemfile:

gem 'rbs_rails', require: false

And then execute:

$ bundle install

Or install it yourself as:

$ gem install rbs_rails


Run the following command. It generates lib/tasks/rbs.rake.

$ bin/rails g rbs_rails:install

Then, the following three tasks are available.

  • rbs_rails:generate_rbs_for_models: Generate RBS files for Active Record models
  • rbs_rails:generate_rbs_for_path_helpers: Generate RBS files for path helpers
  • rbs_rails:all: Execute all tasks of RBS Rails

Install RBS for rails gem

You need to install rails gem's RBS files. I highly recommend using rbs collection.

  1. Add gem 'rails' to your Gemfile.
  2. Then execute the following commands console $ bundle install $ bundle exec rbs collection install

Steep integration

Put the following code as Steepfile.

target :app do
  signature 'sig'

  check 'app'

That's all! Now you can check your Rails app statically with steep check command.


After checking out the repo, run bin/setup to install dependencies.

You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.


Bug reports and pull requests are welcome on GitHub at https://github.com/pocke/rbs_rails.