“SwiftData inheritance relationship”

Here is my models: import SwiftData @Model final public class FirstModel { let name: String @Relationship(deleteRule: .cascade, inverse: SecondModel.parent) var children = [SecondModel]() init(name: String) { self.name = name } } @Model final public class SecondModel { let parent: FirstModel let name: String @Relationship(deleteRule: .cascade, inverse: ThirdModel.parent) var children = [ThirdModel]() init(name: String, parent: FirstModel) { self.name = name self.parent = parent } } @Model final public class ThirdModel { let parent: SecondModel let name: String init(name: String, parent: SecondModel) { self.name = name self.parent = parent } } Then I create my model entries: let schema = Schema([ FirstModel.self, SecondModel.self, ThirdModel.self ]) let container = try ModelContainer(for: schema) let context = ModelContext(container) let firstModel = FirstModel(name: my first model) let secondModel = SecondModel(name: my second model, parent: firstModel) let thirdModel = ThirdModel(n

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 Accou

First the Model: import Foundation import SwiftData //Model for Earned Value Analysis @Model final class CostReport{ var aCWP: Double //Actual Cost of Work Performed var bCWP: Double //Budgeted Cost of Work Performed var bCWS: Double // Budgeted Cost of Work Scheduled var cumACWP: Double// Cumlative Actual Cost of Work Performed var cumBCWP: Double // Cumlative Budgeted Cost of Work Performed var cumBCWS: Double // Cumlative Budgeted Cost of Work Scheduled var startDateOfPeriod: Date var endDateOfPeriod: Date var contract: Contract? init(aCWP: Double = 0.0, bCWP: Double = 0.0, bCWS: Double = 0.0, cumACWP: Double = 0.0, cumBCWP: Double = 0.0, cumBCWS: Double = 0.0, startDateOfPeriod: Date = .now, endDateOfPeriod: Date = .now, contract: Contract) { self.aCWP = aCWP self.bCWP = bCWP self.bCWS = bCWS self.cumACWP = cumACWP self.cumBCWP = cumBCWP self.cumBCWS = cumBCWS self.startDateOfPeriod = startDateOfPeriod self.endDateOfPeriod = endDateOfPeriod self.contract = contract } } @Model //Model for Contract

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 = Dat

On page https://developer.apple.com/library/ios/documentation/Swift/Conceptual/Swift_Programming_Language/Initialization.html#//apple_ref/doc/uid/TP40014097-CH18-ID231, a page on Initialization, at the section called Required Initializers, I find the following sentence:Write therequired modifier before the definition of a class initializer to indicate that every subclass of the class must implement that initializer:What does it mean to implement the initializer? Does that mean I have to explicitly write code for the inherited initializer, or could I consider the inherited initializers implemented without writing additional code in the subclass by virtue of inheritance? I thought initializers are automatically inherited by subclasses from the superclass by virtue of inheritance, without having to write explicit code for them in the subclass.

I have a Debug.xcconfig file: SWIFT_ACTIVE_COMPILATION_CONDITIONS = DEBUG I have a AppUAT.Debug.xcconfig file that includes the above file and tries to use inheritance to only add a new value: #include Debug.xcconfig SWIFT_ACTIVE_COMPILATION_CONDITIONS = $(inherited) UAT Build Settings will only show: Active Compilation Conditions == UAT I put the quotes there to show $(inherited) is nil and the space is literally carried over from the space after $(inherited). What am I doing wrong?

I am building an app where tasks can be shown on multiple selected days. The user will select a day and the available tasks should be shown. I am struggling to build a view hierarchy where the visible tasks will update when added to the currently shown day. A simplified model looks like the below: @Model final class Day { private(set) var dayID: UUID = UUID() var show: [Item]? } @Model final class Item { private(set) var itemID: UUID = UUID() @Relationship(inverse: Day.show) var showDays: [Day]? } I have a view representing a day, and I would like it to display a list of associated tasks below. The view doesn't update if I list a day's tasks directly, e.g. List(day.show) {} I get a compile error if I build a sub view that queries Item using the day's show array: let show = day.show ?? [] let predicate = #Predicate { item in show.contains(where: { $0.itemID == item.itemID }) } I get runtime error if I flip the predicate: let dayID = day.dayID let predicate: Predicate = #Predicate { item in item.showDa