I've been stuck at this for hours now and I've tried everything I could think of. I've loaded the JSON data into structs and just want to make the Core Data entities from that (I'm not trying to go directly from JSON to Core Data).
The regular things show up just fine but I can't get the friends (and tags) to work properly no matter what I do.
I've set up a one to many relationship with "CDFriend" and this is my content view right now:
//
// ContentView.swift
// FriendFace
//
//
import SwiftUI
struct ContentView: View {
@Environment(\.managedObjectContext) var moc
@State var usersAll = [User]()
@FetchRequest(entity: CDUser.entity(), sortDescriptors:[]) var userCDList: FetchedResults<CDUser>
var body: some View {
NavigationView{
// List(usersAll, id: \.id) { user in
// NavigationLink(destination:userView(user: user, allUsers: usersAll)){
// Text(user.name)
// }
// }.navigationBarTitle("FriendFace")
// .onAppear(perform: loadData)
List(userCDList, id: \.id) { user in
NavigationLink(destination:userView(user: user, allUsers: usersAll)){
Text(user.wrappedName)
}
}.navigationBarTitle("FriendFace")
.onAppear(perform: loadData)
}
}
func buildCD(){
for user in usersAll {
let newUser = CDUser(context: self.moc)
newUser.name = user.name
newUser.id = user.id
newUser.isActive = user.isActive
newUser.age = Int16(user.age)
newUser.company = user.company
newUser.email = user.email
newUser.address = user.address
newUser.about = user.about
newUser.registered = user.registered
newUser.tags = ""
var tempFriendsArray = Array<CDFriend>()
for friend in user.friends{
let newFriend = CDFriend(context: moc)
newFriend.name = friend.name
newFriend.id = friend.id
tempFriendsArray.append(newFriend)
}
newUser.friends = NSSet(array: tempFriendsArray)
try? self.moc.save()
}
}
func loadData(){
guard let url = URL(string: "https://www.hackingwithswift.com/samples/friendface.json") else {
print ("invalid url")
return
}
let request = URLRequest(url: url)
URLSession.shared.dataTask(with: request) { data, response, error in
if let data = data{
if let decodedResponse = try? JSONDecoder().decode([User].self, from: data){
DispatchQueue.main.async {
self.usersAll = decodedResponse
buildCD()
}
return
}
}
print("Fetch failed: \(error?.localizedDescription ?? "Unknown error")")
}.resume()
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
I also tried using this:
newUser.addToFriends(newFriend)
instead of making a temporary array but this didnt work either.
I'd really appreciate any help!
I'm really on the verge of giving up on this challenge...
