How to discard CoreData changes in one object when RKObjectManager failed to post object

I know nothing about RKObjectManager, but in order to discard changes to NSManagedObject instance you could call:

[object.managedObjectContext refreshObject:object mergeChanges:NO]

This will discard all changes and turn the object into fault.

see here

Swift solution:

import CoreData

extension NSManagedObject {
    func cancelChanges() {
        managedObjectContext?.refresh(self, mergeChanges: false)
    }
}

Using:

object.cancelChanges()

Related