I would like to make possibility for attending to event in Facebook feed view in my app. Is it possible by POST-request of Graph API?
IF it´s still possible, then by just doing a POST request to the attending endpoint. For example, with the JS SDK:
FB.api('/[event-id]/attending', 'POST', function(response){
console.log(response)
});
Afaik it was possible earlier, and you would need the rsvp_event
permission for this.
Edit: I just tried it in the API Explorer, it definitely works: https://developers.facebook.com/tools/explorer/?method=POST&path=[event-id]%2Fattending&version=v2.5 (of course you need to replace the event ID)