Collage

This is a Rack middleware that will package all your Javascript into a single file (very much inspired by Rails’ javascript_include_tag(:all, :cache => true).

Examples:

use Collage, :path => File.dirname(__FILE__) + "/public"

use Collage, 
  :path  => File.dirname(__FILE__) + "/public",
  :files => ["jquery*.js", "*.js"]

Collage also provides a handy helper for your views:

<%= Collage.html_tag("/public") %>