[SOLVED] CKSubscription returns error that query must have at least one firing mode when using FiresOnce

CKSubscription returns error that query must have at least one firing mode when using FiresOnce

I have this code. Which works when creating a subscription with a firing mode of FiresOnRecordCreation... but getting error on FiresOnce.. the error is "Query Subscriptions must have at least one type of firing mode"

My goal is that I have a photo. When the first rating of the photo occurs i want to get a notification. I do not want to use FiresOnRecordCreation on the reference as for every rating there will be a notification which is too many. I just want the first notification for the first rating received.

    let database = CKContainer.defaultContainer().publicCloudDatabase
    let predicate = NSPredicate(format:"owningPhoto == %@", ref)
    let subscription = CKSubscription(recordType: "PhotoRatings", predicate: predicate, options: .FiresOnce)

xcode crashes on the subscription but on with FiresOnce.

Solution

besides the .FireOnce you should also indicate if that's for creation, update or deletion. So the call should be something like:

   let subscription = CKSubscription(recordType: "PhotoRatings", predicate: predicate, options: [.FiresOnce, .FiresOnRecordCreation, .FiresOnRecordUpdate, .FiresOnRecordDeletion])