How to compress css files and javascript file in Ruby on rails

I want to compress css files and javascript files i开发者_StackOverflown my project. Is there any plugin to do that? :">

I used bundle-fu, worked great.

• compresses both css and javascript
• has no external dependencies
• is around for a long time (proven)
• is simpler to use than Jammit (no config file).
• more

Jammit is newer and fancyer.

• it has better compression as it can use the latest compressor from google Closure Compiler considered having the best compression
• is harder to use than bundle-fu (makes you define a config file)
• has external dependencies (the java runtime to run the closure or yui compressors, written in java).

I use Jammit for this.

Rails 3.1 will do this automagically, as Ryan Bates shows in his Rails-3.1 Overview.