I have created Book Entity using core data. As users click on the BookCardView, it should know what book is clicked on. My approach is create UserCardViewModel, which keep track what book was selected

class UserCardViewModel: ObservableObject {
  @Published var selectedCard : Book = Book()
}

In UserView

struct UserView: View {
  @StateObject var userCardModel = UserCardViewModel()

  var body: some View {
    ForEach(books){book in
      BookCardView(selectedCard: $userCardModel.selectedCard)
    }
}

The code was built successfully but it show errors on debug like Failed to call designated initializer on NSManagedObject class 'Book' I guess the problem is in UserCardViewModel as I try to initialize instance of Book without given context. Any ideas how to fix this problem

if Book using Core Data, I think the type should be FetchResults<Book>.Element . but I init like this:

class Current: ObservableObject {
    @Published var currentArticle = FetchedResults<Article>.Element()
}

still wrong ...