This gem adds mattheworiordan's jquery.simulate.drag-sortable.js to the asset pipeline.
Add this line to your application's Gemfile:
gem 'jquery-simulate-drag-sortable-rails'
And then execute:
$ bundle
Or install it yourself as:
$ gem install jquery-simulate-drag-sortable-rails
In your application.js, add the following:
//= require jquery.simulate.drag-sortable