👀 Views: 0 💬 Answers: 1 📅 Created: 2025-07-07

core-data ios swift

I'm trying to debug I've been researching this but Hey everyone, I'm running into an issue that's driving me crazy... This might be a silly question, but I'm working with an scenario with Core Data on iOS 17 where my fetch request returns outdated results after performing updates. I'm using a NSManagedObjectContext with a private queue. After saving changes in the context, I expect a subsequent fetch request to reflect those changes, but it seems to pull stale data. Here’s a simplified version of my code: ```swift let fetchRequest: NSFetchRequest<MyEntity> = MyEntity.fetchRequest() fetchRequest.predicate = NSPredicate(format: "attribute == %@", myValue) let context = persistentContainer.viewContext context.perform { do { let results = try context.fetch(fetchRequest) print("Fetched results: \(results)") } catch { print("behavior fetching entities: \(behavior)") } } ``` Before the fetch, I save changes in another context like this: ```swift let privateContext = NSManagedObjectContext(concurrencyType: .privateQueueConcurrencyType) privateContext.parent = persistentContainer.viewContext privateContext.perform { // Update or insert objects in privateContext // ... do { try privateContext.save() // Saving to parent context } catch { print("behavior saving private context: \(behavior)") } } ``` I've confirmed that the changes are being saved correctly in the private context. However, when I perform my fetch in the main context right after saving, I still see the old data. I've tried calling `performChanges` on the main context after saving, but it hasn’t resolved the scenario. Has anyone faced a similar scenario or can suggest best practices for ensuring that my fetch request retrieves the latest data after updates? This is part of a larger CLI tool I'm building. For context: I'm using Swift on Ubuntu. Thanks in advance! I've been using Swift for about a year now. What am I doing wrong? What's the correct way to implement this?