advanced patterns when using Combine with Core Data on iOS 17
I'm upgrading from an older version and Hey everyone, I'm running into an issue that's driving me crazy... Does anyone know how to I'm experimenting with I've searched everywhere and can't find a clear answer. Quick question that's been bugging me - I've searched everywhere and can't find a clear answer. I'm working with an scenario while integrating Combine with Core Data in my iOS 17 app. I have a simple data model with an `Entity` that has a `name` attribute. I'm using a `@FetchRequest` in my SwiftUI view to fetch data and then trying to use Combine to update the UI whenever the data changes. Despite setting up my publishers, my view isn't updating as expected when new items are added to Core Data. Here’s a simplified version of my code: ```swift class DataModel: ObservableObject { @Published var entities: [Entity] = [] private var cancellables = Set<AnyCancellable>() init() { fetchEntities() } func fetchEntities() { let request: NSFetchRequest<Entity> = Entity.fetchRequest() let context = PersistenceController.shared.container.viewContext do { entities = try context.fetch(request) // Observing Core Data changes NotificationCenter.default.publisher(for: .NSManagedObjectContextDidSave) .sink { [weak self] _ in self?.fetchEntities() } .store(in: &cancellables) } catch { print("Failed to fetch entities: (behavior)") } } } ``` In my SwiftUI view, I have: ```swift struct ContentView: View { @StateObject private var dataModel = DataModel() var body: some View { List(dataModel.entities, id: \ .self) { entity in Text(entity.name) } } } ``` The scenario I'm experiencing is that even when I add a new `Entity` instance to my Core Data context and save it, the list in my `ContentView` does not update automatically. I tried adding debug prints inside the `fetchEntities()` method, and they confirm that the method is called after the save notification, but the `entities` property does not seem to trigger a view refresh. I'm not seeing any errors in the console, but I suspect there's an scenario with how I'm observing the context changes. Anyone encountered a similar scenario or know how to properly integrate Combine with Core Data for automatic updates in SwiftUI? I'm working on a CLI tool that needs to handle this. How would you solve this? The project is a desktop app built with Swift. This is happening in both development and production on Windows 10. Any examples would be super helpful. My development environment is CentOS. What am I doing wrong? This is happening in both development and production on Windows 11. Thanks for your help in advance!