Is it possible to track history using the new HistoryDescriptor feature in SwiftData? Or can I only get the current most recent data? Or is it possible to output the changed data itself, along with timestamps? I am hoping that it is possible to track by a standard feature like NSPersistentHistoryTransaction in CoreData. Do we still have to use a method in SwiftData that creates more tracking data itself?

I'm seeing a lot of these in my logs: PersistentIdentifier PersistentIdentifier(id: SwiftData.PersistentIdentifier.ID(url: x-swiftdata://Course/BC9CF99A-DE6A-46F1-A18D-8034255A56D8), implementation: SwiftData.PersistentIdentifierImplementation) was remapped to a temporary identifier during save: PersistentIdentifier(id: SwiftData.PersistentIdentifier.ID(url: x-coredata:///Course/t58C849CD-D895-4773-BF53-3F63CF48935B210), implementation: SwiftData.PersistentIdentifierImplementation). This is a fatal logic error in DefaultStore ... though everything seems to work. Does anyone know what this means in this context? Anything I can do to not have this appear?

Here we have yet another bug, I suppose, in SwiftData that happens on iOS18 but it is not an issue on iOS17. There are 2 models defined as follows @Model final public class Note: Identifiable, Codable, Hashable { public private(set) var uuid = UUID().uuidString var heading: String = "" var tags: [Tag]? init(heading: String = "") { self.heading = heading } required public init(from decoder: Decoder) throws { ... } public func encode(to encoder: Encoder) throws { ... } } @Model final public class Tag: Identifiable, Codable { var name: String = "" @Relationship(deleteRule: .nullify, inverse: \Note.tags) var notes: [Note]? init(_ name: String) { self.name = name } required public init(from decoder: Decoder) throws { … } public func encode(to encoder: Encoder) throws { ... } } and a function o add new tags as follows private func addTags(note: Note, tagNames: [String]) { if note.tags == nil { note.tags = [] } for tagName in tagNames { if let tag = fetchTag(tagName) { if !note.tags!.contains(where: {$0.name == tagName}) { note.tags!.append(tag) } } else { // The following line throws the exception on iOS18 when Tag conforms to Codable: // Illegal attempt to map a relationship containing temporary objects to its identifiers. note.tags!.append(Tag(tagName)) } } } This code works perfectly well on iOS17 but on iOS18 I get the exception “Illegal attempt to map a relationship containing temporary objects to its identifiers.” What I noticed that this happens only when Tag model conforms to Codable protocol. Is it a bug? It looks like, otherwise we've got some undocumented changes have been made. In my previous post I mentioned about the other issue about ModelContext that is broken too on iOS18 - I mean it works perfectly well on iOS17. Demo app with an example how to workaround this problem is available here on GitHub. Repro steps: Add a note with some tags (separated by space) Edit this note and add a new tag (tag that does not exists in database) and tap Save. You should noticed that the tag hasn't been added. It works occasionally but hardly to be seen.

Hello, I’m struggling to go from unversioned data model in SwiftData, to starting to version it. Some FYI: I’m using CloudKit I’m using a widget, where I also pass in my data model and setup my container, this is shared over a group container/app group. My migration is very simple, I’m adding a property which is not optional ( has default value set, and a default value in initialiser ). Model: @Model class NicotineModel { var nicotineType: NicotineType = NicotineType.snus var startDate: Date = Date() + 30 var spendingAmount: Int = 0 var nicotinePerDay: Int = 0 var quittingMethod: QuittingMethod = QuittingMethod.coldTurkey // this is the change in the model, V1 doesn't have the quittingMethod property var setupComplete: Bool = false I’ve tried with: static let migrateV1toV2 = MigrationStage.lightweight( fromVersion: SchemaV1.self, toVersion: SchemaV2.self ) But also static let migrateV1toV2 = MigrationStage.custom( fromVersion: SchemaV1.self, toVersion: SchemaV2.self, willMigrate: nil, didMigrate: { context in let nicotineModels2 = try context.fetch(FetchDescriptor<SchemaV2.NicotineModel>()) let nicotineModels = try context.fetch(FetchDescriptor<SchemaV1.NicotineModel>()) for model in nicotineModels { let newModel = SchemaV2.NicotineModel( nicotineType: model.nicotineType, startDate: model.startDate, spendingAmount: model.spendingAmount, nicotinePerDay: model.nicotinePerDay, setupComplete: model.setupComplete, quittingMethod: .coldTurkey ) context.insert(newModel) context.delete(model) } try context.save() } ) and simply static let migrateV1toV2 = MigrationStage.custom( fromVersion: SchemaV1.self, toVersion: SchemaV2.self, willMigrate: nil, didMigrate: { context in let nicotineModels = try context.fetch(FetchDescriptor<SchemaV2.NicotineModel>()) for model in nicotineModels { model.quittingMethod = .coldTurkey } try context.save() } ) This gives me the error on startup SwiftData/ModelCoders.swift:1762: Fatal error: Passed nil for a non-optional keypath \NicotineModel.quittingMethod On https://icloud.developer.apple.com I can see that the record doesn't include my quittingMethod. I'm loosing my mind, what am I doing wrong?

Hi Folks, starting with iOS18 and using Xcode16, accessing fetchedProperties results in an error. I identified the issue to occur as soon as the initialization of a fetched property with external binary data storage starts. Console output during debugging: *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'This expression has evaluation disabled' *** First throw call stack: [...] libc++abi: terminating due to uncaught exception of type NSException Console output when trying to "print" the item via the contact menu of the debugger: Printing description of variable: error: error: Execution was interrupted, reason: internal ObjC exception breakpoint(-6).. The process has been returned to the state before expression evaluation. Message from debugger: killed The identical code works with iOS before iOS 18 (same for iPadOS 18). Does anyone observed a similar issue and figured out a solution already? Cheers, folox

Hello everyone, I'm working on an iOS app that uses CloudKit for data synchronization. I'm encountering an issue where my app can't find the "JournalPrompt" record type in the public database. Here's the relevant code and error messages (I'm using placeholders like [APP_NAME] or [CONTAINER_IDENTIFIER]): private func fetchPromptsFromiCloud() { let container = CKContainer(identifier: "[CONTAINER_IDENTIFIER]") let publicDatabase = container.publicCloudDatabase // Create a predicate to query for the specific record let predicate = NSPredicate(format: "recordID.recordName == %@", "B6663053-FC2E-4645-938B-9FA528D59663") let query = CKQuery(recordType: "JournalPrompt", predicate: predicate) publicDatabase.perform(query, inZoneWith: nil) { [weak self] (records, error) in if let error = error as? CKError { if error.code == .unknownItem { print("JournalPrompt record type does not exist or the specific record was not found in the public database.") } else { print("Error fetching record from iCloud public database: \(error)") } return } guard let record = records?.first else { print("No record found with the specified ID in the public database.") return } print("Found record in public database:") print("Record ID: \(record.recordID.recordName)") print("Text: \(record["text"] as? String ?? "No text")") print("Creation Date: \(record.creationDate ?? Date())") print("Used Count: \(record["usedCount"] as? Int ?? 0)") print("Is Default: \(record["isDefault"] as? Bool ?? false)") } } Error When I run this code, I get the following error: Error fetching record from iCloud public database: <CKError 0x600000c072a0: "Invalid Arguments" (12/1009); "Invalid predicate: recordKey (recordID.recordName) contains invalid characters"> I've also implemented a function to check the CloudKit schema: func checkCloudKitSchema() { checkDatabase(scope: .private) checkDatabase(scope: .public) } private func checkDatabase(scope: CKDatabase.Scope) { let container = CKContainer(identifier: "[CONTAINER_IDENTIFIER]") let database = scope == .private ? container.privateCloudDatabase : container.publicCloudDatabase print("Checking \(scope == .private ? "private" : "public") database") database.fetchAllRecordZones { (zones, error) in if let error = error { print("Error fetching record zones: \(error)") return } print("Available record zones in \(scope == .private ? "private" : "public") database:") zones?.forEach { zone in print("- \(zone.zoneID.zoneName)") } let query = CKQuery(recordType: "JournalPrompt", predicate: NSPredicate(value: true)) database.perform(query, inZoneWith: nil) { (records, error) in if let error = error as? CKError, error.code == .unknownItem { print("JournalPrompt record type does not exist in the \(scope == .private ? "private" : "public") database.") } else if let error = error { print("Error fetching records from \(scope == .private ? "private" : "public") database: \(error)") } else if let records = records, !records.isEmpty { print("JournalPrompt record type exists in the \(scope == .private ? "private" : "public") database.") print("Fetched \(records.count) JournalPrompt records:") for record in records { print("Record ID: \(record.recordID.recordName)") print("Fields:") record.allKeys().forEach { key in print(" - \(key): \(type(of: record[key]))") } print("---") } } else { print("JournalPrompt record type exists in the \(scope == .private ? "private" : "public") database, but no records found.") } } } } When I run this, I get: Checking public database Available record zones in public database: _defaultZone JournalPrompt record type does not exist in the public database. CloudKit Database Setup I've set up my CloudKit Database as follows: And my data model is as follows: Despite this setup, my app can't seem to find or interact with the JournalPrompt record type. I've double-checked that my app's identifier matches the one in the CloudKit dashboard, and I've verified that the record type name is spelled correctly. Questions: Why might my app be unable to find the JournalPrompt record type, even though it's defined in the CloudKit dashboard? Is there anything wrong with my query or error handling that could be causing this issue? Are there any common pitfalls or setup steps I might have missed when integrating CloudKit? Any insights or suggestions would be greatly appreciated. I really appreciate any help you can provide.

Some users of my app are reporting total loss of data while using the app. This is happening specifically when they enable iCloud sync. I am doing following private func setupContainer(enableICloud: Bool) { container = NSPersistentCloudKitContainer(name: "") container.viewContext.automaticallyMergesChangesFromParent = true container.viewContext.mergePolicy = NSMergeByPropertyObjectTrumpMergePolicy guard let description: NSPersistentStoreDescription = container.persistentStoreDescriptions.first else { fatalError() } description.setOption(true as NSNumber, forKey: NSPersistentHistoryTrackingKey) description.setOption(true as NSNumber, forKey: NSPersistentStoreRemoteChangeNotificationPostOptionKey) if enableICloud == false { description.cloudKitContainerOptions = nil } container.loadPersistentStores { description, error in if let error { // Handle error } } } When user clicks on Toggle to enable/disable iCloud sync I just set the description.cloudKitContainerOptions to nil and then user is asked to restart the app. Apart from that I periodically run the clear history func deleteTransactionHistory() { let sevenDaysAgo = Calendar.current.date(byAdding: .day, value: -7, to: Date())! let purgeHistoryRequest = NSPersistentHistoryChangeRequest.deleteHistory(before: sevenDaysAgo) let backgroundContext = container.newBackgroundContext() backgroundContext.performAndWait { try! backgroundContext.execute(purgeHistoryRequest) } }

Hello, everyone! I'm using CloudKit JS with a React SPA to allow users from a mobile app to access their data in a web browser. Currently, the project is still under development so there are no public users beside my team. The way I've integrated CK JS in my app is via their CDN, importing the required url in my index.html file. However, I'm having issues with the Authentication using Apple Sign In. While the Sign In and Sign Out buttons work correctly for me and my teammates, the session is not persisted for everyone. Actually, I'm the only one from me team that does not have to log in every day. I have the following configuration function: export const configureCloudKit = () =&amp;gt; { window.CloudKit.configure({ locale: 'en-us', containers: [ { containerIdentifier: CONTAINER_ID, apiTokenAuth: { apiToken: API_TOKEN, persist: true, signInButton: { id: 'apple-sign-in-button', theme: 'black', }, signOutButton: { id: 'apple-sign-out-button', theme: 'black', }, }, environment: 'development', }, ], }); }; As you can see, I'm using the persist:true option so there shouldn't be any issues with having a persistent session. From my research, I found that CloudKit JS sets a cookie called iCloud.com.myContainerName and if I delete that cookie, when I reload the browser, the session is indeed lost. This happens for all my teammates, same cookie and same behavior. Nevertheless, I also found three cookies that are not present for any of my teammates but me (using Google Chrome). Those are called: X-APPLE-WEBAUTH-AC-PARTITION X-APPLE-WEBAUTH-AC-SERVERINFO X-APPLE-WEBAUTH-AC-TOKEN But even if I delete those cookies, the session is not lost for me. Does anyone know whether I'm doing something wrong with the configuration? Or if there are something I'm not taking into account regarding the cookies handling in my project?

I'm building an application with SwiftUI and SwiftData. Up until a couple days ago, everything was working fine. Then, Xcode auto-updated to v16 in the background, and the next time I opened Xcode and tried to build my app it wouldn't build anymore, citing some errors in expanding the SwiftData @Model macro on one of my objects. Attached are the errors specifically, shown where Xcode shows them (in the expanded @Model macro). In text, they are: Instance method 'access(_:keyPath:)' requires that 'Member' conform to 'Observable' Cannot convert value of type 'Risers.Member' to expected argument type 'Member' Instance method 'withMutation(of:keyPath:_:)' requires that 'Member' conform to 'Observable' Cannot convert value of type 'Risers.Member' to expected argument type 'Member' Here is the SwiftData class in full: import SwiftData import SwiftUI @Model class Member: Identifiable, Hashable { var chorus: Chorus? var id = UUID() var firstName: String var lastName: String var fullName: String { "\(firstName) \(lastName)" } var voicePart: Int var voicePartString: String? { chorus?.voicePartType.prettyName(forPart: voicePart) } @Attribute(.externalStorage) var pictureData: Data init(chorus: Chorus? = nil, firstName: String = "", lastName: String = "", voicePart: Int = 1, pictureData: Data = Data()) { self.chorus = chorus self.firstName = firstName self.lastName = lastName self.voicePart = voicePart self.pictureData = pictureData } init(member: Member) { self.chorus = member.chorus self.firstName = member.firstName self.lastName = member.lastName self.voicePart = member.voicePart self.pictureData = member.pictureData } I tried building again on Xcode 15.4, and it still builds successfully there. Xcode 16.1 beta has not made a difference. Is this my fault, or is Xcode 16 broken?

Hi I’m having real problems trying to get a simple “to do” type app working with cloudkit. It works fine with SwiftData but as soon as I add CloudKit I get lots of “container not found errors “ which I think relates to the relationships between my classes. If I strip out the group sort order class it works fine. I’ve stripped the app back to basics to test - I want to be able to add a “task” (task data) to a “group list “ (group data) also also store the position of the task in that list (group sort order) as there may be lots of tasks in a list. The same task could also be in a different group list with a different position in the list (so another entry and value in group sort order) .. why does the following not work?? any help appreciated! //  TaskData.swift //  TaskOutApp // import Foundation import SwiftData `@Model class TaskData: Identifiable, Equatable { var id = UUID() var title: String = "No Title"     var isDone: Bool = false     var isToday: Bool = false     var creationDate: Date = Date()          var doneDate: Date = Date()     var todayDate: Date = Date()     // Use an array of GroupSortOrder to maintain both group and sort order     var groupSortOrders: [GroupSortOrder]? = nil          init(id: UUID = UUID(), title: String = "No Title", isDone: Bool = false, isToday: Bool = false, creationDate: Date = Date(), doneDate: Date = Date(), todayDate: Date = Date(), groupSortOrders: [GroupSortOrder]? = nil) {         self.id = id         self.title = title         self.isDone = isDone         self.isToday = isToday         self.creationDate = creationDate         self.doneDate = doneDate         self.todayDate = todayDate         self.groupSortOrders = groupSortOrders     }          static func currentDateString() -> String {         let formatter = DateFormatter()         formatter.dateStyle = .short         formatter.timeStyle = .short         return formatter.string(from: Date())     }          static func == (lhs: TaskData, rhs: TaskData) -> Bool {         lhs.id == rhs.id     } } @Model class GroupData: Identifiable {     var id = UUID()     var title: String = "no title"     var icon: String = "no icon"     var creationDate: Date = Date()     var task: [TaskData]? = []          init(id: UUID = UUID(), title: String, icon: String, creationDate: Date = Date(), task: [TaskData] = []) {         self.id = id         self.title = title         self.icon = icon         self.creationDate = creationDate         self.task = task     }          static func currentDateString() -> String {         let formatter = DateFormatter()         formatter.dateStyle = .short         formatter.timeStyle = .short         return formatter.string(from: Date())     } } @Model class GroupSortOrder: Identifiable {     var id = UUID()     var group: GroupData? = nil     var sortOrder: Int = 0          init(id: UUID = UUID(), group: GroupData? = nil, sortOrder: Int = 0) {         self.id = id         self.group = group         self.sortOrder = sortOrder     } }`

Hi, after upgrading to Xcode 16.0 I encountered the fact that when loading preview, I get an error: Fatal error: Inverse already set to another relationship - secondAccount - cannot assign to - firstAccount import Foundation import SwiftData import SwiftUI @Model class TransactionModel { @Relationship(inverse: \AccountModel.accountTransactions) var firstAccount: AccountModel? /// <- here @Relationship(inverse: \AccountModel.accountTransactions) var secondAccount: AccountModel? /// <- here @Relationship(inverse: \DebtorModel.transactions) var debtor: DebtorModel? @Relationship(inverse: \CategoryModel.transactions) var category: CategoryModel? init(account: AccountModel? = nil, secondAccount: AccountModel? = nil, debtor: DebtorModel? = nil, category: CategoryModel? = nil) { self.firstAccount = account self.secondAccount = secondAccount self.debtor = debtor self.category = category } } import SwiftData import SwiftUI @Model final public class AccountModel: Identifiable, Hashable { var accountId: UUID = UUID() var accountTransactions: [TransactionModel]? init(id: UUID = UUID()) { self.accountId = id } } Is this really not possible to implement? In Xcode 15, this worked both on the device and in the editor. Thanks!

Hi, I have a swift data class that has an enum PromptFont as a property. the data class is hosted in CloudKit. upon launch, I started getting this error: below is the property and the enum when I released this app, there was no error, and it was building and running flawlessly. when I build this on a simulator (iPadOS 17.5), it runs just fine

I'm not entirely sure if this API only shows which fields have changed (e.g., change.updatedAttributes), or if it also provides the updated values for those fields. Ultimately, my goal is to allow users to click in the app to view how a model has mutated over time, and I was wondering if this feature could facilitate that.

In my app, I worked with ios18 by default and I had no issue, everything was working fine. However, when I wanted to test it with an iOS 17.5 simulator or real device, it is unusable because it crash when object with a relationship are created. on the first line you can see my relationship, and under it it is the extended relationship macro unmodifiable. has someone already encountered this? any clue of a hide modification of relationship working behavior in ios18? this is really annoying cause it make me unable to reduce the minimum deployment target of my app to ios17

Doing a batch delete on a many-to-one relationship seems to throw this error CoreData: error: Unhandled opt lock error from executeBatchDeleteRequest Constraint trigger violation: Batch delete failed due to mandatory OTO nullify inverse on Student/school and userInfo { NSExceptionOmitCallstacks = 1; NSLocalizedFailureReason = "Constraint trigger violation: Batch delete failed due to mandatory OTO nullify inverse on Student/school"; "_NSCoreDataOptimisticLockingFailureConflictsKey" = ( ); } If I try to delete the School in the one-to-many relationship, both the school and the students are deleted as expected. However, If I try to delete all students the error is thrown. I would expect all students to be removed, while keeping the School intact. Do SwiftData support this? import XCTest import SwiftData @Model class School { var name: String @Relationship(deleteRule: .cascade, inverse: \Student.school) var students: [Student] = [] init(name: String) { self.name = name } } @Model class Student { var name: String var school: School? init(name: String) { self.name = name } } final class Test: XCTestCase { func testScenario() throws { let config = ModelConfiguration(isStoredInMemoryOnly: true) let modelContainer = try ModelContainer(for: School.self, Student.self, configurations: config ) let context = ModelContext(modelContainer) context.autosaveEnabled = false let school = School(name: "school") context.insert(school) let student1 = Student(name: "1") let student2 = Student(name: "2") context.insert(student1) context.insert(student2) student1.school = school student2.school = school XCTAssertEqual(school.students.count, 2) XCTAssertEqual(student1.school?.id, school.id) XCTAssertEqual(student2.school?.id, school.id) try context.save() let newContext = ModelContext(modelContainer) // try newContext.delete(model: School.self) // This works try newContext.delete(model: Student.self) // This one fails } }

I have an app which uses SwiftData and CloudKit all works fine and well. Now I wanted to implement a feature which lets the user know that there are data incoming from the cloud and they have to wait a little bit for the data to show up. Furthermore my app needs to do some data sanitation when it starts up. This sanitation should only be done after the CloudKit updates are processed. So is there a way that my app can know when CloudKit is doing updates and when it is finished? I was looking for some kind of notification but couldn’t find any info on that. I don’t need to know which data are updated or process the data. I just want to get notified when a sync starts and when it has ended. Actually it would suffice to know when a sync is finished.

Given the code below the students array on the school is not being updated. Why? Since the relationship is explicit and non-optional I would expect this to work. import XCTest import SwiftData @Model class School { var name: String @Relationship(deleteRule: .cascade, inverse: \Student.school) var students: [Student] init(name: String, students: [Student]) { self.name = name self.students = students } } @Model class Student { var name: String var school: School init(name: String, school: School) { self.name = name self.school = school } } final class Test: XCTestCase { func testScenario() throws { let modelContainer = try ModelContainer(for: School.self, Student.self ) let context = ModelContext(modelContainer) context.autosaveEnabled = false let school = School(name: "school", students: []) context.insert(school) let student1 = Student(name: "1", school: school) let student2 = Student(name: "2", school: school) context.insert(student1) context.insert(student2) XCTAssertEqual(school.students.count, 2) // XCTAssertEqual failed: ("0") is not equal to ("2") } }

Users will receive a unique ID, if a user enters another user's ID they will go to a view where both have access to the information, being able to change, add, delete... (Paired, available on App Store) Public container is not secure, private with ckshare doesn't seem to work for what I would like, plus the content is very confusing I need something that uses native Apple technologies to build this system.

Since the iOS 18 and Xcode 16, I've been getting some really strange SwiftData errors when passing @Model classes around. SwiftData/BackingData.swift:409: Fatal error: This model instance was destroyed by calling ModelContext.reset and is no longer usable. PersistentIdentifier(id: SwiftData.PersistentIdentifier.ID(url: x-coredata://D0F0E233-8D1D-4020-924B-BA56959140FD/ListModel/p10), implementation: SwiftData.PersistentIdentifierImplementation) The same issue also happens when I try to retrieve a model from the ModelContext using its PersistentIdentifier and try to do anything with it. I have no idea what could be causing this. This is my actor @ModelActor actor ListCrudOperations:ObservableObject{ func add(list:ListModel){ modelContext.insert(list) try? modelContext.save() } func delete(identifier:PersistentIdentifier){ guard let list = self[identifier, as: ListModel.self] else { print("error") return } if list.listType == .task{ list.reminders!.forEach { reminder in TaskModel.delete(modelContext: modelContext, reminder: reminder) NotificationService.deleteReminders(name: reminder.title!, Id: reminder.id) } } else if list.listType == .subscription { list.subscription!.forEach({ sub in Subscription.delete(modelContext: modelContext, subscription: sub) NotificationService.deleteReminders(name: sub.ServiceName, Id: sub.id) }) } else if list.listType == .link { list.links!.forEach ({link in Links.delete(modelContext: modelContext, link: link) NotificationService.deleteNotificationForLink(title: link.name, linkID: link.id) } ) } modelContext.delete(list) try? modelContext.save() } func addReminder(reminder:TaskModel, identifier:PersistentIdentifier){ guard let list = self[identifier, as: ListModel.self] else { print("error") return } list.reminders!.append(reminder) reminder.list = list try? modelContext.save() } func addSubscription(subscription:Subscription, identifier:PersistentIdentifier){ guard let list = self[identifier, as: ListModel.self] else { print("error") return } list.subscription!.append(subscription) subscription.list = list try? modelContext.save() } func addLink(link:Links, identifier: PersistentIdentifier) { guard let list = self[identifier, as: ListModel.self] else { print("error") return } list.links?.append(link) link.list = list try? modelContext.save() } func fetchListByType(type:ListType) -> [ListModel] { let type = SwiftTaskSchemaV8.ListModel.ListType(rawValue: type.rawValue)! let fetchDescriptor = FetchDescriptor<ListModel>() do { let list = try modelContext.fetch(fetchDescriptor) let list2 = try list.filter(#Predicate { $0.listType == type }) return list2 }catch{ return [] } } func fetchListsForMultipleTypes(_ types: [ListType]) -> [ListModel] { return types.flatMap { type in fetchListByType(type: type) } } func fetchAllList() -> [ListModel] { let fetchDescriptor = FetchDescriptor<ListModel>(sortBy: [.init(\.createdDate)]) do { let list = try modelContext.fetch(fetchDescriptor) return list }catch{ return [] } } }``` and this is how i am calling it @Environment(.modelContext) private var context let listOperation = ListCrudOperations(modelContainer: context.container) let list = ListModel(name: name, color: self.color, icon: self.icon, listType: ListModel.ListType(rawValue: picked.rawValue)!) Task { await listOperation.add(list: list) await MainActor.run{ withAnimation(.bouncy){ self.list.append(list) } CrashServices.shared.addLogs(message: "folder added") } }

Hi guys. Can someone please confirm this bug so I report it? The issue is that SwiftData relationships don't update the views in some specific situations on devices running iOS 18 Beta. One clear example is with CloudKit. I created a small example for testing. The following code creates two @models, one to store bands and another to store their records. The following code works with no issues. (You need to connect to a CloudKit container and test it on two devices) import SwiftUI import SwiftData struct ContentView: View { @Environment(\.modelContext) private var modelContext @Query private var records: [Record] var body: some View { NavigationStack { List(records) { record in VStack(alignment: .leading) { Text(record.title) Text(record.band?.name ?? "Undefined") } } .toolbar { ToolbarItem { Button("Add Record") { let randomNumber = Int.random(in: 1...100) let newBand = Band(name: "New Band \(randomNumber)", records: nil) modelContext.insert(newBand) let newRecord = Record(title: "New Record \(randomNumber)", band: newBand) modelContext.insert(newRecord) } } } } } } @Model final class Record { var title: String = "" var band: Band? init(title: String, band: Band?) { self.title = title self.band = band } } @Model final class Band { var name: String = "" var records: [Record]? init(name: String, records: [Record]?) { self.name = name self.records = records } } This view includes a button at the top to add a new record associated with a new band. The data appears on both devices, but if you include more views inside the List, the views on the second device are not updated to show the values of the relationships. For example, if you extract the row to a separate view, the second device shows the relationships as "Undefined". You can try the following code. struct ContentView: View { @Environment(\.modelContext) private var modelContext @Query private var records: [Record] var body: some View { NavigationStack { List { ForEach(records) { record in RecordRow(record: record) } } .toolbar { ToolbarItem { Button("Add Record") { let randomNumber = Int.random(in: 1...100) let newBand = Band(name: "New Band \(randomNumber)", records: nil) modelContext.insert(newBand) let newRecord = Record(title: "New Record \(randomNumber)", band: newBand) modelContext.insert(newRecord) } } } } } } struct RecordRow: View { let record: Record var body: some View { VStack(alignment: .leading) { Text(record.title) Text(record.band?.name ?? "Undefined") } } } Here I use a ForEach loop and move the row to a separate view. Now on the second device the relationships are nil, so the row shows the text "Undefined" instead of the name of the band. I attached an image from my iPad. I inserted all the information on my iPhone. The first three rows were inserted with the first view. But the last two rows were inserted after I extracted the rows to a separate view. Here you can see that the relationships are nil and therefore shown as "Undefined". The views are not updated to show the real value of the relationship. This example shows the issue with CloudKit, but this also happens locally in some situations. The system doesn't detect updates in relationships and therefore doesn't refresh the views. Please, let me know if you can reproduce the issue. I'm using Mac Sequoia 15.1, and two devices with iOS 18.0.