我正在用SwiftData重构我的模型层。我已经让我的模型工作，容器设置和工作，现在我想开始使用CRUD操作的后台上下文。
下面是我如何设置我的容器：

@Observable class OhMyModelController {
    public static var shared = OhMyModelController()
    let modelContainer: ModelContainer
    let workContext: ModelContext
    
    public init() {
        let schema: Schema = Schema([TestModelClass.self])
        let inMemory: Bool = Configuration.mode == .unitTesting ? true : false
        let modelConfiguration = ModelConfiguration(Configuration.mode.rawValue, inMemory: inMemory, readOnly: false, sharedAppContainerIdentifier: Configuration.appGroupName, cloudKitContainerIdentifier: Configuration.cloudKitContainerIdentifier)
        self.modelContainer = try! ModelContainer(for: schema, configurations: [modelConfiguration])
        self.workContext = ModelContext(self.modelContainer)
    }
}

下面是我添加或删除的方式（使用环境中容器的主上下文或我在控制器中创建的workContext）：

public func create(_ context: ModelContext?) {
        let contextToUse: ModelContext = context != nil ? context! : workContext
        contextToUse.insert(object: TestModelClass(name: "Test"))
        try? contextToUse.save()
    }
    
    public func delete(_ test: TestModelClass, on context: ModelContext?) {
        let contextToUse: ModelContext = context != nil ? context! : workContext
        contextToUse.delete(test)
        try? contextToUse.save()
    }

下面是我用于测试的视图：

struct SwiftDataTest: View {
    @Environment(\.modelController) var modelController: OhMyModelController
    @Environment(\.modelContext) var modelContext: ModelContext
    @Query() var tests: [TestModelClass]
    var body: some View {
        VStack {
            List {
                ForEach(tests) { test in
                    Text(test.name)
                        .onTapGesture(perform: {
                            modelController.delete(test, on: modelContext)
                        })
                }
            }
            Button(action: {
                modelController.create(modelContext)
            }, label: {
                Text("Testers will test!")
            })
        }
    }
}

在@Environment modelContext和workContext上插入和删除工作，它们只是没有保持彼此最新。SwiftData是否有与automaticallyMergesChangesFromParent等效的功能？这似乎很奇怪，认为一切都是如此容易，但然后我将不得不手动跟踪和合并更改使用保存通知？