slim-rails provides Slim generators for Rails 3+. It was based on haml-rails and it does basically the same:

• Any time you generate a controller or scaffold, you'll get Slim templates (instead of ERB)
• When your Rails application loads, Slim will be loaded and initialized automatically
• Slim templates will be respected by the view template cache digestor

To use it, add this line to your Gemfile:

gem "slim-rails"

And that's it.

From the version 0.2.0, there is no need to include gem "slim" in your Gemfile.

Every time you generate a controller or scaffold, you'll get Slim templates.