Data flow and managed objects in SwiftUI

• the detail view only ever shows the first item in the entries. In this case, "Butter Detail" is always presented.

• when tapped, the detail text crashes the app with the error "An NSManagedObjectContext cannot delete objects in other contexts". I though @StateObject could help me here but I'm still unclear on its implementation.

Code Block 
struct ContentView: View {
@Environment(\.managedObjectContext) var managedObjectContext
@FetchRequest(entity: Entry.entity(), sortDescriptors: [NSSortDescriptor(keyPath: \Entry.name, ascending: true)], predicate: nil) var entries: FetchedResults<Entry>
@State var isPresented = false
var body: some View {
        VStack {
            Button(action: {
                Entry.create(in: managedObjectContext)
            }) {
                Text("Button")
            }
            Text("\(entries.count)")
            List{
                ForEach(entries, id: \.self) { entry in
                    Text(entry.name ?? "Unknown")
                        .onTapGesture {
                            isPresented = true
                        }
                        .sheet(isPresented: $isPresented) {
                            Detail(entry: entry)
                   }
                }
            }
        }
    }
}
struct Detail: View {
@Environment(\.managedObjectContext) var managedObjectContext
@StateObject var entry: Entry
    var body: some View {
        Text("\(entry.name ?? "Error") Detail")
            .onTapGesture {
                do {
                    managedObjectContext.delete(entry)
                    try managedObjectContext.save()
                } catch {
                    print(error)
                }
            }
    }
}