如何从应用程序保存第三方ID Facebook？

Question

So I have a platform that each user is given an id. Let's call it myAppId. I want to my users to be able to connect to facebook. I have a facebook app set up where users can do that. However, when I return the list of friends who use the app, it only returns the facebook_id. I notice in the facebook graph API, there is a third_party_id property. How can I save my platform user ids to the third_party_id property for each user?

Answer 1

You can't. third_party_id is a read-only ID that Facebook generates and permits you to share with third parties like ad networks as a unique identifier. Facebook considers the user's ID to be private information (they don't even give your app the real ID, but one that's specific to your application - and you're still not allowed to give that out to others).

Facebook provides no method for storing data on their systems about a user. Once a user connects to Facebook for your application, you are responsible for storing their Facebook ID in your database alongside their other data in your app.