CODEWITHSUNDEEP
core-dataswiftui
joels
joels

Reputation: 7721

Does the @FetchRequest property wrapper automatically notify when changes happen?

If I'm using an NSPersistentCloudKitContainer, I see in the sqlite file that changes are automatically synced. I can also make changes in the CloudKit Dashboard, restart the app and see the changes. If I use @FetchRequest to load some items, should the items array automatically update?

// Fetch some items
@FetchRequest(
        sortDescriptors: [NSSortDescriptor(keyPath: \Item.timestamp, ascending: true)],
        animation: .default)
    private var items: FetchedResults<Item>

// Show them in a List

List(items) { item in
  VStack {
    Text("Item at \(item.timestamp!, formatter: itemFormatter)")
  }
}

Upvotes: 0

Views: 80

Answers (1)

joels
joels

Reputation: 7721

Yes, if you set automaticallyMergesChangesFromParent = true which is not in the default code provided by Apple when you check Use CoreData and CloudKit.

let container = NSPersistentCloudKitContainer(name: "MyApp")
container.viewContext.automaticallyMergesChangesFromParent = true

Upvotes: 1

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