How to force FetchRequest update in SwiftUI

Issue #623

Listen to context changes notification and change SwiftUI View state

let changes = [NSDeletedObjectsKey: ids]
NSManagedObjectContext.mergeChanges(
    fromRemoteContextSave: changes,
    into: [context]
)
try context.save()

struct ListView: View {
    @Environment(\.managedObjectContext)
    var context

    private var didSave = NotificationCenter.default.publisher(for: .NSManagedObjectContextDidSave)
    @State
    private var refreshing: Bool = false

    var body: some View {
        makeContent()
            .onReceive(didSave) { _ in
                self.refreshing.toggle()
            }
    }
}

We need to actually use that State variable for it to have effect

if refreshing {
    Text("")
} else {
    Text("")
}