How do I use open id in ruby on rails?

Question

There doesn't appear to be any recent information about using Open ID in Ruby on Rails... the only walkthroughs that I can find do not work anymore. Does anyone know of a walkthrough or documentation that will actually work with modern versions of ruby on rails and required software?

I've been struggling with this for days and cannot make anything work.

Answer 1

This screencast is well done and fairly recent (july 2009):

Railscast on openid with authlogic

Answer 2

I found the early OpenID Railscast (68) really useful when I implemented OpenID, as well as Dan Webb's guide.