Saving core data entity in popover in SwiftUI throws nilError without passing .environment to SubView again

Question

Playin\' with SwiftUI and Core Data brought me into a curious problem. So the situation is the following:

I have a main view \"AppView\" and a sub view named \"SubVi

Answer 1

WOW THIS DROVE ME NUTS! Especially because the errors tells you absolutely no information as to how to fix.

Here is the fix until the bug in Xcode is resolved:

        .navigationBarItems(trailing:
            Button(action: {
                self.add = true
            }, label: {
                Text("Add Todo List")
            }).sheet(isPresented: $add, content: {
                AddTodoListView().environment(\.managedObjectContext, managedObjectContext)
            })
        )

Just add .environment(\.managedObjectContext, managedObjectContext) to your secondary view (a Modal, in this example).