title: Facebook fanpage app liking/login in Rails
body: <p>More than looking at a exact solution. I'm trying to figure out the whole process and how it works regarding best practices. I have an app (Car Listing) and I would like to register the user for him to be able to post car listing for sale.</p>
  
  <p>The whole idea is that the user must like the fanpage in order to see/browser the content.</p>
  
  <p>I'm wondering; Do I have to create the User model when the likes the fanpage or when he tries to access the car posting page (cars/new) or does the whole process happens through facebook OAUTH?</p>
  
  <p>I'm a fairly experienced web developer but I'm kind of lost when it comes to registration/liking through facebook. Could someone point me in the right direction?</p>
  
  <p>Thank You</p>