Graph API: event's RSVP check - facebook

Question

I'm currently trying to get an idea of getting Facebook's RSVP for an event, but really stuck on that part:
as I see now, to get user's RSVP I have to make three requests with the following logic:
request eventID/attending/userID ->
if "data" array count == 0 ->
request eventID/maybe/userID ->
if "data" array count == 0 ->
request eventID/declined/userID
else -> means user didn't make any choice previously.
So here it looks like I have to make 3 requests to facebook's graph api to get users's RSVP for a single event.
The question is if there is any way to get an RSVP status for an event doing a single request?
I'm using the latest Facebook SDK and the latest graph api.
Many thanks in advance.

Answer 1

So the best solution here so far is:
one request to /eventID/attending/userID
one request to /eventID/maybe/userID
one request to /eventID/declined/userID (if needed to know if the event invitation was declined)
Call to eventID/attending(maybe/declined)/userID lets us filter rsvp to single user, so we avoid downloading and processing a large amount of data here.
After call you have two options:
If result is true, you get the following response:
{
"data": [
{
"name": "Oleskii Poplavlen",
"id": "10204715567996406",
"rsvp_status": "attending"
}
]}
If result is false, you get the following response:
{
"data": []
}
So while you still have to make multiple requests to get user's RSVP to event, you can avoid downloading loads of other users's rsvps.
Hope that helps someone!

Answer 2

I can get you started to do it in 2 calls:
FB.api('/'+ event_id + '?fields=id,attending{rsvp_status},maybe{rsvp_status}', function(event_response){
// here you should make a call to check if the user has the event and if so get the rsvp_status
FB.api('/'+ user_id + '/events?fields=id,rsvp_status', function(user_response){
// check if user has event, then log the rsvp_status
if(user_response.id == event_response.id) {
console.log(user_response.rsvp_status);
} else {
console.log("user is not going");
});
});
I have not tested this but I've been playing around with this API for quite a while now. This could be an answer to do it in 2 calls, not in 1 unfortunatly.
The first call doesn't need the 'attending' and 'maybe' fields but it's usefull to test with.