Pregunta
Facebook major API change sucks but we have to deal with it. The page endpoint got a new "context" field which returns the number of friends who like this page, and the identity of the friends who also installed my app.
For example:
https://stackoverflow.com/questions/23454488
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Russian/v2.0/579302565453830?pretty=1&fields=context.fields(mutual_friends.limit(1000))
This is possible according to the new documentation: https://developers.facebook.com/docs/facebook-login/social-context/v2.0
I can also get the members of a group, for instance:
/v2.0/573611446041812/members
How can I mix it and get only the members (or at least number of members) that are my friends? /me/friends returns only friends that use my app so this is not an option.
Solución
As /v2.0/me/friends returns only app-using friends, its only possible to surface to a user the subset of a group's members, who are friends of the user, where those friends also use the app.
There is currently no friends_who_are_members (or similar) context edge on the Group node.
Otros consejos
the only way you know if someone is your friend is if that targeted someone is also using your app and granted the necessary permission.
That said, if person A is your friend and A is using your app, 'A' will come up in /me/friends and isn't the answer to your question just the overlap of the two sets?
(/v2.0/blahblah/members) ^ (/me/friends)
?
It turns out that now the /me/friends doesn't return the list of all of my friends, there's no possible way to calculate my friends out of the members of a group. I opened a bug in Facebook, hopefully the'll fix this issue.
