Core Data: Do child contexts ever get permanent objectIDs for newly inserted objects?

by

It is a known bug, hopefully fixed soon, but in general, obtaining a permanent ID is sufficient, provided you do so before you save the data in the first child, and you only include the inserted objects:

[moc obtainPermanentIDsForObjects:moc.insertedObjects.allObjects error:&error]

In some complex cases, it is better to get a permanent ID as soon as you create the instance, especially if you have complex relationships.

How and when are you calling obtainPermanentIDsForObjects?

I do not follow the part about the app crashing. Maybe a better explanation would help.

More Related Contents:

  1. Core Data background context best practice
  2. NSPersistentContainer concurrency for saving to core data
  3. Correct implementation of parent/child NSManagedObjectContext
  4. How to get managedObjectContext for viewController other than getting it from appDelegate?
  5. Implementing Fast and Efficient Core Data Import on iOS 5
  6. Any way to pre populate core data?
  7. Core Data: Quickest way to delete all instances of an entity
  8. Adding Core Data to existing iPhone project
  9. Concurrent vs serial queues in GCD
  10. iPhone – Grand Central Dispatch main thread
  11. Sqlite File Location Core Data
  12. Core Data and iOS 7: Different behavior of persistent store
  13. Check if property is set in Core Data?
  14. Xcode is looking for core data entity names with dot; not compiling
  15. How to implement re-ordering of CoreData records?
  16. How to add unique constraints for some fields in Core Data
  17. How to create managedObjectContext using Swift 3 in Xcode 8?
  18. Core Data – Failed to load optimized model at path
  19. Swift 3 Core Data Delete Object
  20. iPhone Core Data “Automatic Lightweight Migration”
  21. How do you update a CoreData entry that has already been saved in Swift?
  22. How to print Core Data debug values?
  23. Core Data in Swift: Only saving last object in a for loop
  24. Core Data multi thread application
  25. Xcode 6 iPhone Simulator Application Support location
  26. Trouble running async functions in background threads (concurrency)
  27. +entityForName: nil is not a legal NSManagedObjectContext parameter searching for entity name ‘Account”
  28. Accessing Core Data Stack in MVVM application
  29. How to properly group a list fetched from CoreData by date?
  30. How to disable no inverse relationship warning for CoreData in Xcode 4.2?

Leave a Comment