how to use google charts in ruby on rails

hey everyone i wanna use google charts in ruby on rails. can any one
tell how to use . wht are the plug-in or gems needed . its urgent
guys .

Thanks in advance

Well, assuming you're talking about the newer google visualization API, you don't really need to use any gems at all - it's just javascript.

That said, I use this to help: https://github.com/winston/google_visualr/

-GR