Looking a a RESTfull Ruby application example

Hello, I’ve read several articles about going RESTfull but I’m still
having problems do understand clearly what’s going on.

So, now I need a small (but complete) source code example of how a
RESTfull is built.

Does somebody have a link or two ?

Thanks

http://www.xml.com/pub/a/2005/11/02/rest-on-rails.html
did you see this one?