Dear all, I'm building an app leveraging SwiftData and I have the following two classes: Stagione: import SwiftData @Model class Stagione { @Attribute(.unique) var idStagione: String var categoriaStagione: String var miaSquadra: String @Relationship(deleteRule: .cascade) var rosa: [Rosa]? @Relationship(deleteRule: .cascade) var squadra: [Squadre]? @Relationship(deleteRule: .cascade) var partita: [CalendarioPartite]? init(idStagione: String, categoriaStagione: String, miaSquadra: String) { self.idStagione = idStagione self.categoriaStagione = categoriaStagione self.miaSquadra = miaSquadra } } Squadre: import SwiftData @Model class Squadre { var squadraCampionato: String var stagione: Stagione? init(squadraCampionato: String) { self.squadraCampionato = squadraCampionato } } Now, I have a view in which I'm calling a sheet to insert some Squadre: // Presenta il foglio per aggiungere una nuova partita GroupBox(label: Text("Dettagli Partita").font(.headline).padding()) { VStack { HStack { Text("Giornata:") TextField("Giornata", text: $idGiornata) .frame(width: 30) .textFieldStyle(RoundedBorderTextFieldStyle()) .padding() } DatePicker("Data Partita:", selection: $dataPartita, displayedComponents: .date) .padding() HStack { Text("Squadra Casa:") .frame(width: 150) TextField("Squadra Casa", text: $squadraCasa) .textFieldStyle(RoundedBorderTextFieldStyle()) .padding() TextField("Gol Casa", text: $golCasa) .textFieldStyle(RoundedBorderTextFieldStyle()) .padding() } HStack { Text("Squadra Trasferta:") .frame(width: 150) TextField("Squadra Trasferta", text: $squadraTrasferta) .textFieldStyle(RoundedBorderTextFieldStyle()) .padding() TextField("Gol Trasferta", text: $golTrasferta) .textFieldStyle(RoundedBorderTextFieldStyle()) .padding() } HStack { Button("Salva") { if let partitaSelezionata = partitaSelezionata { // Se è stata selezionata una partita, aggiorna i suoi dati if let index = partite.firstIndex(where: { $0.id == partitaSelezionata.id }) { partite[index].idGiornata = Int(idGiornata) ?? 0 partite[index].dataPartita = dataPartita partite[index].squadraCasa = squadraCasa partite[index].golCasa = Int(golCasa) ?? 0 partite[index].squadraTrasferta = squadraTrasferta partite[index].golTrasferta = Int(golTrasferta) ?? 0 } } else { // Altrimenti, aggiungi una nuova partita aggiungiPartita(stagione: stagione) } // Chiudi il foglio di presentazione mostraAggiungiPartita = false // Resetta il campo di input idGiornata = "" dataPartita = Date() squadraCasa = "" golCasa = "" squadraTrasferta = "" golTrasferta = "" } .buttonStyle(.borderedProminent) .disabled(idGiornata.isEmpty || squadraCasa.isEmpty || squadraTrasferta.isEmpty || golCasa.isEmpty || golTrasferta.isEmpty) // Bottone Chiudi Button("Chiudi") { mostraAggiungiPartita = false } .buttonStyle(.borderedProminent) } } .padding() } } I'd like to insert a autocomplete function in the textfields "Squadra Casa" and "Squadra Trasferta", based on the list of Squadre contained in the class "Squadre" and filtered for a specific Stagione. Has anybody of you made something similar? Do you have any suggestions or code example which I can use? Thanks, A.

I am following this document from Apple to implement sharing with CloudKit. In it, Apple says NSPersistentCloudKitContainer uses CloudKit zone sharing to share objects. Each share has its own record zone on the CloudKit server. CloudKit has a limit on how many record zones a database can have. What is the record zone limit for a private CloudKit database? I can find information about record and participant limits but not on record zone limits.

How can we identify whether the remote change notification is triggered because some data was changed on a different device and it is downloaded from CloudKit, or it is triggered from the current device because new entity was saved into database. Because this notification is posted when both remote data is downloaded or local data is created. It would be great if there is a way to understand the origin of the notification.

CoreData: Zone metadata is missing it's encoded share data but is marked for a mutation: <CKRecordZoneID: 0x600003f044e0; zoneName=com.apple.coredata.cloudkit.share.30BE5FAE-3FE0-4142-90C4-E78FFA90B2A2, ownerName=defaultOwner> - <decode: bad range for [%@] got [offs:312 len:1242 within:0]>

I deployed Xcode to iPhone, emulator and iPhone, and iCloud data is synchronized. But I am using testlight for distribution, so I cannot synchronize. I did not respond in iCloud Kit Database developer mode, and now I have changed to production mode, but there is no response, so I cannot synchronize. That's why.

A few months back, I launched an app that operated solely on a local level. Recently, I've begun the process of integrating it with CloudKit, and so far, the model integration has been successful. I've utilized SwiftData for this task, making it relatively straightforward to adjust the models, as shown below: ` @Relationship(deleteRule: .cascade, inverse: \ItemForCategory.category) var itemForCategory : [ItemForCategory]? = [ItemForCategory]() ` In my initial version of the code, the widget functioned perfectly. However, I've encountered an error recently stating Missing return in instance method expected to return 'ItemForCategory?'. @MainActor private func getLastItem () -> ItemForCategory? { guard let modelContainer = try? ModelContainer(for: Category.self) else { return nil } let descriptor = FetchDescriptor<Category>() let appCategories = try? modelContainer.mainContext.fetch(descriptor) let lastItem = appCategories?.compactMap { $0.itemForCategory }.last return lastItem } The error surfaces at the return line of code. I'm hopeful that someone can assist me in resolving this issue. Thank you very much.

I am new to swift. This is my Item.swift. import SwiftData @Model final class Item: Codable { var id: String var soundId: String var soundAppleId: String var soundType: String var type: String var authorId: String var text: String var createdAt: Date var actionsCount: Int var chainsCount: Int var rating: Int var loved: Bool var replay: Bool var heartedByUser: Bool @Relationship var author: Author? init(id: String, soundId: String, soundAppleId: String, soundType: String, type: String, authorId: String, text: String, createdAt: Date, actionsCount: Int, chainsCount: Int, ratings: Int, loved: Bool, replay: Bool, heartedByUser: Bool, author: Author) { self.id = id self.soundId = soundId self.soundAppleId = soundAppleId self.soundType = soundType self.type = type self.authorId = authorId self.text = text self.createdAt = createdAt self.actionsCount = actionsCount self.chainsCount = chainsCount self.rating = ratings self.loved = loved self.replay = replay self.heartedByUser = heartedByUser self.author = author } private enum CodingKeys: String, CodingKey { case id case soundId = "sound_id" case soundAppleId = "sound_apple_id" case soundType = "sound_type" case type case authorId = "author_id" case text case createdAt = "created_at" case actionsCount = "actions_count" case chainsCount = "chains_count" case rating case loved case replay case heartedByUser case author } required init(from decoder: Decoder) throws { let container = try decoder.container(keyedBy: CodingKeys.self) id = try container.decode(String.self, forKey: .id) soundId = try container.decode(String.self, forKey: .soundId) soundAppleId = try container.decode(String.self, forKey: .soundAppleId) soundType = try container.decode(String.self, forKey: .soundType) type = try container.decode(String.self, forKey: .type) authorId = try container.decode(String.self, forKey: .authorId) text = try container.decode(String.self, forKey: .text) let dateString = try container.decode(String.self, forKey: .createdAt) let formatter = DateFormatter() formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'" if let date = formatter.date(from: dateString) { createdAt = date } else { throw DecodingError.dataCorruptedError(forKey: .createdAt, in: container, debugDescription: "Date string does not match format expected by formatter.") } actionsCount = try container.decode(Int.self, forKey: .actionsCount) chainsCount = try container.decode(Int.self, forKey: .chainsCount) rating = try container.decode(Int.self, forKey: .rating) loved = try container.decode(Bool.self, forKey: .loved) replay = try container.decode(Bool.self, forKey: .replay) heartedByUser = try container.decode(Bool.self, forKey: .heartedByUser) author = try container.decode(Author.self, forKey: .author) } func encode(to encoder: Encoder) throws { var container = encoder.container(keyedBy: CodingKeys.self) try container.encode(id, forKey: .id) try container.encode(soundId, forKey: .soundId) try container.encode(soundAppleId, forKey: .soundAppleId) try container.encode(soundType, forKey: .soundType) try container.encode(type, forKey: .type) try container.encode(authorId, forKey: .authorId) try container.encode(text, forKey: .text) let formatter = DateFormatter() formatter.dateFormat = "yyyy-MM-dd" let dateString = formatter.string(from: createdAt) try container.encode(dateString, forKey: .createdAt) try container.encode(actionsCount, forKey: .actionsCount) try container.encode(chainsCount, forKey: .chainsCount) try container.encode(rating, forKey: .rating) try container.encode(loved, forKey: .loved) try container.encode(replay, forKey: .replay) try container.encode(heartedByUser, forKey: .heartedByUser) try container.encode(author, forKey: .author) } } @Model final class Author: Codable { var id: String var image: URL var username: String var bio: String? init(id: String, image: URL, username: String, bio: String?) { self.id = id self.image = image self.username = username self.bio = bio } private enum CodingKeys: String, CodingKey { case id case image case username case bio } required init(from decoder: Decoder) throws { let container = try decoder.container(keyedBy: CodingKeys.self) id = try container.decode(String.self, forKey: .id) image = try container.decode(URL.self, forKey: .image) username = try container.decode(String.self, forKey: .username) bio = try container.decodeIfPresent(String.self, forKey: .bio) } func encode(to encoder: Encoder) throws { var container = encoder.container(keyedBy: CodingKeys.self) try container.encode(id, forKey: .id) try container.encode(image, forKey: .image) try container.encode(username, forKey: .username) try container.encodeIfPresent(bio, forKey: .bio) } } In my ItemView when I try to access something inside author, Swift preview crashes. Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 SwiftData 0x1cb459e90 0x1cb3d3000 + 552592 1 SwiftData 0x1cb45ba7c 0x1cb3d3000 + 559740 2 SwiftData 0x1cb45e5f8 0x1cb3d3000 + 570872 3 SwiftData 0x1cb4190e4 0x1cb3d3000 + 286948 4 audition 0x100b436e0 Item.author.getter + 320 (@__swiftmacro_8audition4ItemC6author18_PersistedPropertyfMa_.swift:9) 5 ContentView.1.preview-thunk.dylib 0x105f23a20 closure #1 in closure #1 in closure #1 in closure #1 in ItemCard.__preview__body.getter + 820 (ContentView.swift:89) 6 SwiftUI 0x1cba41308 0x1cb47b000 + 6054664 7 ContentView.1.preview-thunk.dylib 0x105f22ee4 closure #1 in closure #1 in closure #1 in ItemCard.__preview__body.getter + 472 (ContentView.swift:84) 8 SwiftUI 0x1cc2e6c40 0x1cb47b000 + 15121472 9 ContentView.1.preview-thunk.dylib 0x105f228b8 closure #1 in closure #1 in ItemCard.__preview__body.getter + 388 (ContentView.swift:83) ...

I have a Category model that's defined like so: @Model final class Category { @Attribute(.unique) var id: UUID var name: String var parent_id: UUID? //categories can be children of other categories init(id: UUID, name: String, parent_id: UUID?) { self.id = id self.name = name self.parent_id = parent_id } } And I'm getting my categories from an API call and putting it into my View: import SwiftUI import SwiftData struct CategoryView: View { @Environment(\.modelContext) private var modelContext @Query private var categories: [Category] @Query(filter: #Predicate<Category>{ $0.parent_id == nil }) private var top_level_categories: [Category] var spacing: CGFloat = 25 var body: some View { HStack() { Text("Categories") .font(.title.bold()) Spacer() Text("see all") } .padding([.bottom, .top], 0) VStack(spacing: 20) { ScrollView(.horizontal) { HStack(spacing: spacing) { ForEach(top_level_categories) { category in Text(category.name!) } } } } .onAppear{ getCategories() } } func getCategories() { get_refresh_token { token in guard let token = token else { return } var urlRequest = URLRequest (url: URL(string:"https://api.test.com/categories")!) urlRequest.httpMethod = "GET" urlRequest.addValue("application/json", forHTTPHeaderField: "Content-Type") urlRequest.addValue("Bearer \(token)", forHTTPHeaderField: "Authorization") URLSession.shared .dataTask(with: urlRequest) { (data, response, error) in do { if let data = data { let c = try JSONDecoder().decode([Category].self, from: data) c.forEach { modelContext.insert($0) } try? modelContext.save() } } catch { print(error) } }.resume() } } } This runs fine the first time I run the app but when I run it again, I get the following error: ForEach<Array<Category>, UUID, Text>: the ID XXXXXX-XXXX-XXXX-XXXX-XXXXXX occurs multiple times within the collection, this will give undefined results! Not sure why this is happening since I thought putting the @Attribute(.unique) on ID means that the same category won't get added twice?

I'm using CoreData+CloudKit. It works fine in development, so I deployed to production. But I cannot see the data in CloudKit DataBase in a testflight version. I don't know where I missed. Can I just run in Release mode to check it works?

I am currently writing an app that is about writing stories. As of now, it is fairly simple: ContentView is your "Collection" of stories. PopupView is when you click on a button in ContentView. In popup view you enter the story title. Once you do that, you are brought to a blank page which is StoryView, where the NavigationTitle is what your story title is. Once I finish the story and leave the page / StoryView, it is still there, but once I close the app on my phone and reopen it, the story is gone and is not saved. I am a relatively new developer, so ive been relying on ChatGPT and Google Gemini for the saving parts of this, but it rarely works, and the furthest ive gotten with it is that it saves the story title but doesn't save the content of the story. I have a feeling that the AI is overdoing it as well. If anyone could help, please do so. Ive been trying to fix this for days. If you need me to provide any code, I am happy to do so. [Edited by Moderator]

It still didn't work when I signed in again

I know that this has been posted many times, but I am facing an issue where I can't save a model instance. I know that this is due to enums from others trying to find solutions. The error that shows: CoreData: error: Row (pk = 2) for entity 'ResidentInfo' is missing mandatory text data for property 'name' Solutions that I've tried: removed all enums from their respective structs to being standalone. making sure all enum calls use the full keyPath removing CustomStringConvertible from all enums and moving them to rawValue strings updating Xcode to 15.4b probably other things I've forgotten at this point File is too long to fit in post or comments (I'm sorry it's insanely long, it's a complex model), so I'll try to fit what I can where, are there anythings that stand out that may be an issue? Enums: enum Gender: String, CaseIterable, Codable { case male = "Male" case female = "Female" case transmale = "Trans Male" case transfemale = "Trans Female" case nonbinary = "Nonbinary" case other = "Other" } enum BodyBuild: String, CaseIterable, Codable { case small = "Small" case medium = "Medium" case large = "Large" } enum Status: String, Codable { case incomplete, complete } enum HairColor: String, CaseIterable, Codable { case black = "Black" case blonde = "Blonde" case dirtyBlonde = "Dirty Blonde" case brown = "Brown" case lightBrown = "Light Brown" case darkBrown = "Dark Brown" case red = "Red" } enum EyeColor: String, CaseIterable, Codable { case blue = "Blue" case brown = "Brown" case black = "Black" case green = "Green" case hazel = "Hazel" case gray = "Gray" case heterochromatic = "Heterochromatic" } enum RaceEthnicity: String, CaseIterable, Codable { case native = "American Indian or Alaska Native" case asian = "Asian" case black = "Black or African American" case pi = "Native Hawaiian or Other Pacific Islander" case white = "White" case mixed = "2 or More Races/Mixed" } enum MarkType: String, CaseIterable, Codable { case birthMark = "Birth Mark" case scar = "Scar" case tattoo = "Tattoo" case piercing = "Piercing" case other = "Other" } enum heightFormatStyle: String { case short, long, hash } enum suicideRiskLevel: String, Codable { case low = "Low" case medium = "Medium" case high = "High" } enum MedicationFrequency: String, CaseIterable, Codable { case daily = "Daily" case weekly = "Weekly" case biweekly = "Bi-Weekly" case monthly = "Monthly" case asNeeded = "As Needed" case temporary = "Temporary Use" case other = "Other" } enum SchoolOption: String, CaseIterable, Codable { case ged = "GED" case communityCollege = "Community College" case university = "4-Year College" } enum FamilyDiseaseTypes: String, CaseIterable, Codable { case alcoholism = "Alcoholism" case asthma = "Asthma" case cancer = "Cancer" case drugAbuse = "Drug Abuse" case hypertension = "High Blood Pressure" case nervousBreakdown = "Nervous Breakdown" case sca = "Sickle Cell Anemia" case seizures = "Convulsions, Seizures Epilepsy" case allergies = "Allergies" case birthDefect = "Birth Defect" case diabetes = "Diabetes" case heartDisease = "Heart Disease" case migraines = "Migraine Headaches" case obesity = "Obesity" case tuberculosis = "Tuberculosis" case thyroid = "Glandular/Thyroid Issues" } Structs: struct IdentifyingInformation: Codable { var hairColor: HairColor = HairColor.black var height: Height = Height(feet: 5, inches: 8) var race: RaceEthnicity = RaceEthnicity.native var build: BodyBuild = BodyBuild.small var eyeColor: EyeColor = EyeColor.blue var hispanic: Bool = false var distinguishingMarks: [DistinguishingMark] = [] var currentLivingSitutation: String = "" var currentSupportServices: String = "" struct DistinguishingMark: Codable, Identifiable { var id: UUID = UUID() var type: MarkType = MarkType.tattoo var location: String = "" var description: String = "" var photos: [Data] = [] } struct Height: Codable { var feet: Int var inches: Int func formatted(formatStyle: HeightFormatStyle = .short) -> String { switch formatStyle { case HeightFormatStyle.hash: return "\(feet)'\(inches)\"" case HeightFormatStyle.long: return "\(feet) feet \(inches) inches" case HeightFormatStyle.short: return "\(feet)ft \(inches)in" } } } } struct EmergencyNeeds: Codable { var food: Bool = false var shelter: Bool = false var clothing: Bool = false var hygeine: Bool = false var medical: Bool = false var mentalHealth: Bool = false var otherNeeds: String = "" var abuseNeglectAllegations: Bool = false var abuseReport: AbuseReport? = nil struct AbuseReport: Codable { var reportAccepted: Bool = false var whoAccepted: String = "" var reportNumber: String = "" } } struct RiskAssessment: Codable { var selfHarm: Bool = false var selfHarmAttempt: Bool = false var selfHarmExplanation: String? = nil var currentFeelings: String? = nil var dangerToOthers: Bool = false var dangerToOthersExplanation: String? = nil var suicideAssessmentRequired: Bool { return selfHarm || dangerToOthers } } struct SuicideAssessment: Loopable, Codable { var dateCompleted: Date = Date() var familyMember: Bool = false var treatedMentalIllness: Bool = false var chronicIllness: Bool = false var historyOfSelfDestructiveBehavior: Bool = false var recentLoss: Bool = false var isolatedAloneHopeless: Bool = false var goodbyeNoteOrPosessionDelegation: Bool = false var plan: Bool = false var betterOff: Bool = false var wishToDie: Bool = false var manualReview: Bool = false var comments: String = "" var helpCallMade: Bool = false var riskLevel: suicideRiskLevel { let riskScore = try? allProperties().reduce(0) { result, property in if let isTrue = property.value as? Bool, isTrue { return result + 1 } else { return result } } switch riskScore! { case 0 ... 3: return .low case 4 ... 7: return .medium default: return .high } } } [Continued in comments]

Hello. I recently released a new version (2.6) of my CloudKit syncing CoreData based app. The new version uses v18 of my data model. V18 is exactly like v17, except for a new optional string field in one of the entities. I diffed the two model versions to be extra sure. During my test I did not encounter any crash, and I also tested automatic migration, installing 2.55 and building 2.6 on top of it. No troubles. However my crash logger reports a number of crashes among my users. It's not a huge numbers (10 users over about 900 or more) but I am surprised it crashes at all. The crash happens when I call NSPersistentCloudKitContainer.loadPersistentStores, I get this error in the completion block: The model used to open the store is incompatible with the one used to create the store" I always assumed these slight changes (new field added to an existing model) did not require a manual migration. Any suggestions?

The deletion is working, but it does not refresh the view. This is similar to a question I asked previously but I started a new test project to try and work this out. @Model class Transaction { var timestamp: Date var note: String @Relationship(deleteRule: .cascade) var items: [Item]? init(timestamp: Date, note: String, items: [Item]? = nil) { self.timestamp = timestamp self.note = note self.items = items } func getModifierCount() -> Int { guard let items = items else { return 0 } return items.reduce(0, {result, item in result + (item.modifiers?.count ?? 0) }) } } @Model class Item { var timestamp: Date var note: String @Relationship(deleteRule: .nullify) var transaction: Transaction? @Relationship(deleteRule: .noAction) var modifiers: [Modifier]? init(timestamp: Date, note: String, transaction: Transaction? = nil, modifiers: [Modifier]? = nil) { self.timestamp = timestamp self.note = note self.transaction = transaction self.modifiers = modifiers } } @Model class Modifier { var timestamp: Date var value: Double @Relationship(deleteRule: .nullify) var items: [Item]? init(timestamp: Date, value: Double, items: [Item]? = nil) { self.timestamp = timestamp self.value = value self.items = items } } struct ContentView: View { @Environment(\.modelContext) private var context @Query private var items: [Item] @Query private var transactions: [Transaction] @Query private var modifiers: [Modifier] @State private var addItem = false @State private var addTransaction = false var body: some View { NavigationStack { List { Section(content: { ForEach(items) { item in LabeledText(label: item.timestamp.formatAsString(), value: .int(item.modifiers?.count ?? -1)) } .onDelete(perform: { indexSet in withAnimation { for index in indexSet { context.delete(items[index]) } } }) }, header: { LabeledView(label: "Items", view: { Button("", systemImage: "plus", action: {}) }) }) Section(content: { ForEach(modifiers) { modifier in LabeledText(label: modifier.timestamp.formatAsString(), value: .currency(modifier.value)) } .onDelete(perform: { indexSet in indexSet.forEach { index in context.delete(modifiers[index]) } }) }, header: { LabeledView(label: "Modifiers", view: { Button("", systemImage: "plus", action: {}) }) }) Section(content: { ForEach(transactions) { transaction in LabeledText(label: transaction.note, value: .int(transaction.getModifierCount())) } .onDelete(perform: { indexSet in withAnimation { for index in indexSet { context.delete(transactions[index]) } } }) }, header: { LabeledView(label: "Transactions", view: { Button("", systemImage: "plus", action: {addTransaction.toggle()}) }) }) } .navigationTitle("Testing") .sheet(isPresented: $addTransaction, content: { TransactionEditor() }) } } } } Here's the scenario. Create a transaction with 1 item. That item will contain 1 modifier. ContentView will display Items, Modifiers, and Transactions. For Item, it will display the date and how many modifiers it has. Modifier will display the date and its value. Transactions will display a date and how many modifiers are contained inside of its items. When I delete a modifier, in this case the only one that exist, I should see the count update to 0 for both the Item and the Transaction. This is not happening unless I close the application and reopen it. If I do that, it's updated to 0. I tried to add an ID variable to the view and change it to force a refresh, but it's not updating. This issue also seems to be only with this many to many relationship. Previously, I only had the Transaction and Item models. Deleting an Item would correctly update Transaction, but that was a one to many relationship. I would like for Modifier to have a many to many relationship with Items, so they can be reused. Why is deleting a modifier not updating the items correctly? Why is this not refreshing the view? How can I resolve this issue?

I have a TabView which consists of a few different tabs. One of which does an @Query to retrieve an array of Transaction models. These are then displayed in a list using a ForEach. struct TransactionsTab: View { @Query private var transactions: [Transaction] ... other code Section(content: { ForEach(transactions) { transaction in transaction.getListItem() } }, header: { LabeledView(label: "Recent Transactions", view: { ListButton(mode: .link(destination: { ListView(list: transactions) .navigationTitle("All Transactions") })) }) }) Transaction contains a different model called TransactionItem and that has a variable called amount. That amount variable is used in the getListItem() function to show how much the total transaction was in the list item. The issue is that I can delete a Transaction and the ForEach will update to reflect that. However, if I delete an TransactionItem separately, that getListItem() will not show that it's been deleted. The total amount shown will still be as if the TransactionItem was never deleted. It will only update when the app is closed and reopened. Below is the code that's ran when deleting a model, in this case a TransactionItem. // Deletes a single item private func delete() { deleteWarning = false if let item = itemToDelete { // If last item is being delete, dismiss the view if list.count == 1 { dismissView() } context.delete(item) context.saveContext() itemToDelete = nil } mode = .view } I would think that deleting the model and having it save will cause the transaction query to update. What's going on here to cause it to not update? By the way, saveContext() just calls the ModelContext save function. extension ModelContext { func saveContext() { do { try self.save() } catch { print("Could not save context: \(error.localizedDescription)") } } }

Many of Apple's tutorials on SwiftData are written alongside SwiftUI, including the sample code. Would it be a bad idea to use SwiftData separately? If I don't use SwiftUI, would it be wiser to choose a different database instead?

I've been coding for a while after creating the project, but I can't remember clearly if I selected SwiftData initially.

iOS17 using swiftData & CloudKit. compiles correctly, then throws error "App installation failed: Unable To Install " Please try again later. Failed to load Info.plist from bundle at path ... /.../simulatorlocation/.app/Frameworks/SwiftData.framework/Info.plist: No such file or directory. same error occurs on physical device 15Pro running iOS17.5 how do I fix this? here is the error: Please try again later. Failed to load Info.plist from bundle at path /Users//Library/Developer/CoreSimulator/Devices/996C811C-EE2D-47AE-881A-D1D2FA830BCC/data/Library/Caches/com.apple.mobile.installd.staging/temp.kkR2I8/extracted/Payload/.app/Frameworks/SwiftData.framework; Extra info about "/Users//Library/Developer/CoreSimulator/Devices/996C811C-EE2D-47AE-881A-D1D2FA830BCC/data/Library/Caches/com.apple.mobile.installd.staging/temp.kkR2I8/extracted/Payload/.app/Frameworks/SwiftData.framework/Info.plist": Couldn't stat /Users//Library/Developer/CoreSimulator/Devices/996C811C-EE2D-47AE-881A-D1D2FA830BCC/data/Library/Caches/com.apple.mobile.installd.staging/temp.kkR2I8/extracted/Payload/.app/Frameworks/SwiftData.framework/Info.plist: No such file or directory

Hello. See the code below. struct ContentView: View { var body: some View { TabView { VehicleTab() .tabItem({ Label("Vehicles", systemImage: "car.fill")}) .modelContainer(for: Vehicle.self) TransactionsTab() .tabItem { Label("Transactions", systemImage: "dollarsign") } .modelContainer(for: Transaction.self) } } } Using the .modelContainer() in this way seems to be causing some issue. I was under the assumption that this would just create a container for each view. I get the error below in this configuration. If I comment out either one of the .modelContainer() modifiers, it works fine. Query encountered an error: Error Domain=NSCocoaErrorDomain Code=256 "The file “default.store” couldn’t be opened." Are you not able to do what I'm doing? Is there a way to have two separate containers?

We currently have a shoebox-based architecture but want to transition to a document-based architecture, so UIManagedDocument seems like an obvious choice. However, the UIManagedDocument API seems outdated given the relatively newer NSPersistentContainer API. Also, it’s not clear if UIManagedDocument’s managedObjectContext can be used on the main thread or not. Ideally, I would like to see a persistentContainer property added to UIManagedDocument which could then be used to obtain the view context or a background managed object context. Does anyone have any suggestions on the latest best practices for document-based architectures using CoreData? I’m more interested in Swift implementations, but knowing best practices for SwiftUI and SwiftData would be helpful too.