Realtime Updates: subscribing to notifications?

Question

Could anyone point me in the best direction to "subscribe" to notifications for a user? I tried playing around with the realtime updates API but apparently Facebook blocks subscribing to notifications.

I get an error:

Error Couldn't save 'user': Application cannot subscribe to notifications

when I try to setup realtime updates for my app. If realtime updates isn't a possibility, would the only other way be for my server to poll Facebook to see if anything has changed for the user?

I feel like it should be really easy for Facebook to just enable subscribing to notification fields for the User object...

Answer 1

For anyone else having problems with this, facebook lists everything you can subscribe to at: https://developers.facebook.com/docs/graph-api/real-time-updates/v2.0#subscribefields

However they list three things you cannot subscribe to (for the user object), these are: friend_request, threads, notifications.

Answer 2

您不能，实时更新意味着“用户更新字段”，例如姓名，年龄，性别等。