Save NSUndoManager transactions one at a time

Question

I need to save the changes not only locally in Core Data, but also on the server.

My concern is that in my case, the user can perform a bunch of interactions in a short time. There is not enough time between interactions to receive a success message returned from the server. This way, I block the GUI until the following message appears - it is now - or choose a different approach.

My new approach would be to allow the user to do a lot of interaction and send the transaction to the undo stackprovided NSUndoManager, included in NSManagedObjectContext, BUT only keep / fix only the transaction, which had received a message about the successful completion . How can I move the “cursor” one at a time, fix the records one by one, although the context already contains so many unsaved changes?

Answer 1

NSUndoManagernot suitable for this task. You can tell him to undo or redo the actions, but you cannot verify these actions or selectively save data in the current undo stack.

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