You have to use the data API. It is the only way for custom view.

I use relationships and when I delete some items from a list, the data are deleted from the database but they are not removed from the list. I use a simple workaround: After saving the data, I reload the view. import SwiftUI struct CustomView: View { ... var body: some View { ...  do { try self.managedObjectContext.save() CustomView() } catch { ... } } }