Creating a series of master detail lists from a single JSON file in SwiftUI

Question

I\'m trying to work through understanding how I can make data flow nicely through an app I\'m building. I just want a basic master detail view where it starts with a list of all

Answer 1

Your CityModel and TownModel need to conform to Identifiable, just add an id to them like you did in UserModel.

Than you need to edit your UserList NavigationLink:

NavigationLink(destination: CityList(cities: user.cities)) {
    Text(user.firstName)
}

The Navigation is now like this: UserList -> CityList -> TownList

CityList:

struct CityList: View {

    var cities: [CityModel]

    var body: some View {
        List (cities) { city in
            NavigationLink(destination: TownList(towns: city.towns)) {
                Text(city.name)
            }
        }
    }
}

TownList:

struct TownList: View {

    var towns: [TownModel]

    var body: some View {
        List (towns) { town in
            Text(town.name)
        }
    }
}

I hope that helps, in my test project it works!