I have many doubts with fbgraph ruby gem. I understand if my page is a independent application which can connect to Facebook.
Now I don´t understand how I should take the user information if my page is on Facebook fan page. I know what Facebook send me params['signed_request'].
However I don’t understand how and when I should use fbgraph ruby wrapper if my site is on Facebook fan page.
I add a filter in my application controller.
This could be modified for other scenarios however this is the simplest example.