How to tell the source of the changed coredata objects in NSManagedObjectContextObjectsDidChange

Question

I need to know the source of the changed coredata objects returned from NSManagedObjectContextObjectsDidChange. I have some shared objects, and want to send a notification if the source is other than me. But when I change an object, it comes through the same as objects changed by other users. Is there any way to tell the difference?

Elijah · Accepted Answer · 2025-04-25 04:52:48Z

0

I found a way to do this. Not as easy as I hoped, but not too bad. I fetch the CKRecord from CloudKit for the changed object, and it has a modifiedUser property that tells me if it was modified by me.

lastModifiedUserRecordID?.recordName == CKCurrentUserDefaultName

answered Apr 25 at 4:52

Elijah

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2 Comments

HangarRash Apr 25 at 5:13

But wouldn't the same user appear on all of a given user's devices?

Elijah Apr 25 at 20:50

Yes. Which is good, so I don't send a notification to myself no matter what device I'm on. I only want to send notifications when the change came from someone I've shared the object with.

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