NSPersistentCloudKitContainer

I've successfully followed the sample code from Apple: Synchronizing a local store to the cloud to deduplicate entities that are created in the user's private store. However my app also has a public store that needs deduplication and if I enable the NSPersistentStoreRemoteChangeNotificationPostOptionKey for both the private and public store then no deduplication will occur in my private store. This is reproducible every time by not setting NSPersistentStoreRemoteChangeNotificationPostOptionKey for the public store. Has anyone else experienced this and has anyone got a solution to get it to work? Persistence setup code: private static func makeStoreDescription(for database: Database) -> NSPersistentStoreDescription { let url: URL let scope: CKDatabase.Scope let configuration: String switch database { case .private: url = Self.privateStoreURL scope = .private configuration = Private case .public: url = Self.publicStoreURL scope = .public configuration = Public } let storeDescription = NSPersistentStoreDescri

Hi guys, First of all, I'm sorry if this is the wrong place to post this. I'm in the last steps of my task manager app: getting the tasks to sync between devices. However, I get the error This NSPersistentStoreCoordinator has no persistent stores (unknown). It cannot perform a save operation. What does this error exactly mean? My container is initialised so it should have a persistent store, right? I've also enabled all the proper capabilities I'm pretty sure (eg, I've enabled CloudKit, created a container, enabled background fetch and remote notifications.) Here is the code for my data controller: import CoreData import Foundation class DataController: ObservableObject { let container = NSPersistentCloudKitContainer(name: TaskDataModel) init() { guard let description = container.persistentStoreDescriptions.first else { fatalError(Container descriptions not loaded) } description.setOption(true as NSNumber, forKey: NSPersistentHistoryTrackingKey) container.viewContext.mergePolicy = NSMergeByPropertyOb

I've got a simple Core Data Entity that is synchronized with CloudKit via NSPersistentCloudKitContainer. I can read my local fields, but how can I read fields like Created & Modified from CloudKit? Do I have to add them to my Core Data model and populate them myself? P.S. In his fantastic WWDC talk Using Core Data with CloudKit, at around 21:40, Nick Gillet talks about how Core Data entities in the CloudKit store are prefixed with CD_ to separate the things that it manages from the ones CloudKit implements. Then he says: You wouldn't believe how many people add modify date to their CKRecord. Like it's something redundant.

coredata pushed schema to cloudkit only for those entities for which I created records. But the record data did not get pushed. I set recordName as Queryable and modifiedTimestamp as both Queryable and sortable. Query does not show the records. I look at Xcode console gives this output for one of the entities that got pushed to cloudkit : CoreData: debug: CoreData+CloudKit: -[PFCloudKitSerializer newCKRecordsFromObject:fullyMaterializeRecords:includeRelationships:error:](575): Serializer has finished creating record: , Also schema for some other entities that do not have any core data records did not get pushed to CloudKit. I thought the entire coredata schema should get pushed along with the records. Looks like it is pushing those entities that have some records but without pushing data. I reset the cloudkit environment and tried again, but issue is not resolved. Also the AppDelegate never gets called. I thought the line below should have called AppDelegate @UIApplicationDelegateAdaptor(AppDelegate.self) var

Imagine I have a game with new levels every day. Users play my game and their progress is saved in Core Data, which is then synchronized with CloudKit via NSPersistentCloudKitContainer. Users' progress is about 500Kb for each level/day. That's 5 Mb in 10 days. Or 182 Mb in a year. If the user plays my game for a year, gets a new iPhone, and installs my app again — will the NSPersistentCloudKitContainer eventually download all 182 Mb of users' data!?

I'm using NSPersistentCloudKitContainer with my app and everything has been working fine for the most part. However, every now and then I come across an entity that saves fine into core data but then can't sync to cloud kit and causes the entire cloud kit feature to stop working. The error happens when starting the app and looks like this: error: CoreData+CloudKit: -NSCloudKitMirroringDelegate _requestAbortedNotInitialized:: - Never successfully initialized and cannot execute request ' 3CD51F2A-E632-4FF0-8B8C-C17DCB15A002' due to error: ... 3 Batch Request Failed CKError's omited ... }> The app is for keeping track of Books, so the basic data model is an entity named Book with a relationship named imageData. This maps to an entity named ImageData with a field named data. data is of type binary data and where the cover image for a particular book is stored. This has worked so far for hundreds of entries into core data and cloud kit, but every now and then I see an error like this in the console a

I've built an app and got it working nicely with CoreData, and now I want to integrate it with CloudKit. I have made some minor changes to my code (namely updating NSPersistentContainer to NSPersistentCloudKitContainer and CloudKit works - I can see records appearing in the iCloud dashboard and I can modify records from the iCloud dashboard and the changes reflect on my device. Great. However, if I disable iCloud syncing via Settings on my device (without force-quitting my app) I notice a couple of things: When switching back to my app if I try and edit an entity I sometimes get an app crash If I quit and reload the app all my data has disappeared from my device (it still remains in iCloud). Is this expected behaviour? Ideally, what I would like, is that the data persists locally if a user has added records but then later decides to disable iCloud syncing on the app. Here's my code in case I've done anything funky with the implantation. It feels pretty simple, but maybe that's the problem. CoreDataMa

I have an app that uses NSPersistentCloudKitContainer and a widget that displays a record. I want to add a button with interactive widgets in iOS 17 to modify the visible record via an AppIntent. When I do this the app logs: CoreData: debug: CoreData+CloudKit: -[NSCloudKitMirroringDelegate managedObjectContextSaved:](2945): : Observed context save: - It does not automatically sync this change to iCloud, not until I manually return the app to the foreground, even if I delay returning from the perform() function. Is there a way to sync NSPersistentCloudKitContainer while the app is in the background as a result of this change triggered in the widget? Thanks!

As I understood there is no built-in mechanism to propagate deletion operations to other devices automatically (CoreData + CloudKit - public database), in order to delete or simulate a deletion do I have to add an attribute to the entities I create in order to simulate a tombstone? and if so I would never really delete the items? or if I do delete them how would I do it? I watched WWDC20 however is still not clear for me how to implement it

I’m using NSPersistentCloudKitContainer and I’m utilising the public database and also the user’s private database. For example I have an entity called Category which has a many-to-many relationship to an entity called NewsArticle. So the NewsArticles exist in the public database for the user to browse, but he can add them to a category which will live in his private database. So that’s my question, is it possible for an entity which exists a in the private database to have a relationship to another entity in a public database?

In the following code, I'm saving and syncing objects in Core Data and CloudKit, everything is working fine, once the user creates some objects, the data starts syncing as soon as the user turns the Toggle switch On in the SettingsView. The issue I'm having is that the data continue syncing even after the switch is turned Off until I kill and relaunch the app. After relaunching the app, the data stops syncing. Any idea what could I do to make sure that the data stops syncing as soon as the toggle switch is turned off? Again, everything would work fine if the user would kill and relaunch the app right after turning it off, the data stops syncing. I thought that by calling carViewModel.updateCloudKitContainer() right after turning it off would do the trick since I'm disabling the CloudKit container by making it nil, description.cloudKitContainerOptions = nil but obviously is not enough. Core Data Manager class CoreDataManager{ // Singleton static let instance = CoreDataManager() @AppStorage(UserDefaults.Keys.iC