ace-rails-ap
The Ajax.org Cloud9 Editor (Ace) for the Rails 3.1+ asset pipeline.
Usage
Gemfile:
gem 'ace-rails-ap'
application.js:
//= require ace/ace
To include a theme or mode, just put:
//= require ace/theme-[sometheme].js
//= require ace/mode-[somemode].js
After //= require ace/ace in your application.js manifest.
Then just use Ace like normal.