Render beautiful code samples from your rails app
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Give rails the power to render code samples in rouge colored glory.


Add this line to your application's Gemfile:

gem 'rouge-rails'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rouge-rails


Stylesheets with standard colorschemes are available in the asset pipeline. Include them in your applications application.scss

@import "rouge";


Render a beautifully highlighted code example in a rails view

  1. Place the code sample in a partial somewhere in your views directory and use ".rouge" as the file extension, e.g.:
# app/views/home/_code_sample.rouge
class MyCode
  def example
    puts "hello world"
  1. Render the code sample in your view:
# app/views/home/index.html.erb
<%= render "code_sample", language: :ruby %>

Configure the default colorscheme

Add this code to an initializer in your app

# config/initializers/rouge.rb
Rouge::Rails.configure do |config|
  config.default_colorscheme = "solarized-dark"

Specify a colorscheme for a single partial

<%= render "code_sample", language: :ruby, colorscheme: "github" %>

You can even use ERB inside a rouge template

# app/controllers/home_controller.rb
def index
  @greeting = "hello world"

# app/views/home/_code_sample.rouge
class MyCode
  def example
    puts "<%= @greeting %>"


After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. 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


Bug reports and pull requests are welcome on GitHub at


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