I have two view controllers, one is a tableView with a NSFetchedResultsController and the other is a regular viewController. My tableView is properly setup with NSFetchedResultsController delegates and is working perfect. I now have realized that just because I declare the same managed object context in each separate view that the tableView/NSFetchedresultsController will not monitor changes that I have made in the regular view controller.
This is how I declare it in each view
lazy var coreDataStack = CoreDataStack(modelName: "myApp")
I understand now that I need to merge my saved changes from my regular viewControllers context to my tableView/NSFetchedresultsController context so that the delegate methods can run but I am unsure how to do so.
When I change create or update an object in the regular VC I add notification observers like this
NotificationCenter.default.addObserver(self, selector: #selector(contextDidSave(_:)), name: Notification.Name.NSManagedObjectContextDidSave, object: nil)
@objc func contextDidSave(_ notification: Notification) {
let frc = ConversationsViewController().fetchedResultsController
frc.managedObjectContext.mergeChanges(fromContextDidSave: notification)
frc.managedObjectContext.processPendingChanges()
print("Object did save: \(notification)")
}
After I create or update an object the regular VC, notification prints successfully but no delegate methods are called in tableView/NSFetchedresultsController. I know that the objects are saving because when I restart the app they are shown in the tableView. I would greatly appreciate if anyone can point me in the right direction as to how I can notify my fetchedResultsController an object has saved. I have seen a similar question NSFetchedResultsController doesn't call controllerDidChangeContent: after update to non-fetched NSManagedObject but it is in Objective C
