The Ajax.org Cloud9 Editor (Ace) for the Rails 3.1+ asset pipeline.

In your Gemfile, add:

gem 'ace-rails-ap'

Then execute bundle and restart your server.

Add in your application.js file:

//= require ace-rails-ap

To include a theme or mode, add them in your application.js file:

//= require ace/theme-sometheme
//= require ace/mode-somemode

Workers and modes don't need to be included in your application.js file, as they can also be loaded dynamically (see below).

Ace will dynamically load the JavaScript files for workers and modes at run-time.

ace-rails-ap plays nicely with the Rails asset pipeline by automatically configuring the precompilation of the workers and modes, and by setting up Ace to load the fingerprinted files. You have nothing to do, it just works.

You may have done some customisation to allow ace-rails-ap to work in production, such as adding the worker files in assets.precompile of your application.rb and/or using ace.config.setModuleUrl function. You can remove those.

Also replace the previous javascript manifest instruction //= require ace/ace by the new //= require ace-rails-ap, and remove all workers from your javascript manifest.