View with FetchRequest doesnt update on change

Hello guys,

this is my first post to this forum and really hope that somebody can help me here.
I would highly appreciate every help!

I am writing my first app with Swift UI (never used UIKit before) which I want to publish later on.

This is also my first app which has CoreData implemented.

For example I use the following entities:

Family, Person

1 Persons can have 1 Family
1 Family can have many Persons


My App is structured as the following:

ContentView:

Contains a TabView with 2 other views in it. A Settings View and a View with a LazyVGrid.

LazyVGrid View:

This View shows a GridItem for every Family. I get the Families with the following Fetchrequest:

Code Block 
@Environment(\.managedObjectContext) private var viewContext
// These are the Families from the FetchRequest
@FetchRequest(entity: Family.entity(),
	sortDescriptors: [NSSortDescriptor(keyPath: \Family.created, ascending: false)]
) var families: FetchedResults<Family>

Every GridItem is linking to a "FamilyDetailView" via NavigationLink. So i pass the family as the following:

Code Block 
NavigationLink(destination: FamilyDetailView(family: family).environment(\.managedObjectContext, self.viewContext), label: {Text("Family Name")

In the FamilyDetailView i get the Family with a property wrapper:

Code Block 
@State var family : Family

In this FamilyDetailView is the problem i have.

Here I also have a LazyVGrid, which shows 1 NavigationLink for every Person in the Family in a GridItem . In this GridItem I also show for example the "name" of the Person.

When tapping the NavigationLink i get to the last View, the PersonDetailView. This View gets the Person which is also an entity which has a relationship to the Family Entity.

I pass it as the follow:

Code Block 
NavigationLink(
destination: PersonDetailView(person: person),
label: {Text("Person")})

In the PersonDetailView I now change the name of the person and save the changed to CoreData.

The change is saved without a problem, the problem is that when I go back, using the topleading back button from the NavigationView, the Views are not updated. I have to restart the App to see the changes..

I know that the Problem has to be with passing the Data, but I cant figuring out what I did wrong.

I really appreciate everyone trying to help me!

Thank you very very much!!