This is what i have:

class Users: ObservableObject, Codable {
    @Published var users =  [User]()

}

struct User: Codable, Identifiable {
    var name: String
    var id: String
    var age: Int
    var company: String
    var about: String
    var friends: [Friend]
}

struct Friend: Codable {
    var id: String
    var name: String
}

How do i make the class Users codable? I lost track of all the ways with init, requered init and so on.

My first version was to leave away the class Users and use an array [User] to make the app work. But now I want to show the friends on the details view and pass a class to that view. I tried to pass [User] as an observedObject but that did not work (as expected) as it would have been an array of classes [Class]. (Of course i changed the User struct to a class for that.)

This is the rest of my current code:

struct ContentView: View {

    //Local demo data for designing
    @State var listOfUsers: [User] = Bundle.main.decode("friendface.json")
    //@State private var users = [User]()

    var body: some View {
        NavigationView {
            VStack {
                List(listOfUsers) { user in
                    NavigationLink(destination: DetailView(user: user)) {
                        VStack(alignment: .leading) {
                            Text(user.name)
                            HStack {
                                Text("Age: \(user.age)")
                                    .font(.subheadline)
                                Spacer()
                                Text("\(user.friends.count) Friends")
                                    .font(.subheadline)
                            }
                        }
                    }

                }
            }
            .navigationTitle("Friends")
            .onAppear(perform: loadData)
        }

    }

    func loadData() {
        guard let url = URL(string: "https://www.hackingwithswift.com/samples/friendface.json") else {
            fatalError("Invalid URL")
        }
        let request = URLRequest(url: url)
        URLSession.shared.dataTask(with: request) { data, response, error in
            if let data = data {
                guard let loaded = try? JSONDecoder().decode([User].self, from: data) else {
                    print("Failed to decode from bundle")
                    return
                }
                DispatchQueue.main.async {
                    self.listOfUsers = loaded
                }
            }
        }.resume()
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

struct DetailView: View {
    let user: User
    var body: some View {
        VStack {
            Text(user.company)
            Text("Age: \(user.age)")

        }
        .navigationBarTitle(user.name)
    }
}

Hi @JEK587

You are doing well (better then I was when I did it!). Just a few pointer

You do not need this as you are not passing it around the whole app so keep it simple. So you can delete it

class Users: ObservableObject, Codable {
    @Published var users =  [User]()

}

Next you better of putting struct Friend: Codable inside struct User: Codable, Identifiable this keeps it so cant be called without the User struct eg

struct User: Codable, Identifiable {
    struct Friend: Codable {
        var id: String
        var name: String
    }

    var name: String
    var id: String
    var age: Int
    var company: String
    var about: String
    var friends: [Friend]
}

lastly

Do you have a file called friendface.json in the project(Bundle)? If not then this will not work and deleted, however the commented code is correct @State private var listOfUsers = [User]()

Thank you for your help, yes i added a .json to the project to see how it looks like without running it.