Yii Login + Facebook both

I want to have the standard Yii user login/registration as well as Facebook login in my site. I have searched but couldn’t find tutorial on this that is not hard to follow or outdated. Can anyone guide me on this please, or point me to any resource for this?

Look for Oauth, a resource to read would be http://developers.facebook.com/docs/authentication/

Or

https://www.google.com.pk/search?q=oauth+facebook&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a