Conditional use in view for SwiftUI - swiftui

Question

I have a model with data string of name and a bool of UE. I'm trying to display item.name whenever UE is true. My issue is when whenever I run the code the data doesn't seem to read the UE. I got an error displaying the item.UE as a text view. The data that I am getting it from is from a database the item.name works without the conditional.
struct AttendingUsersView: View {
#ObservedObject var model = UserViewModel()
var body: some View {
VStack {
List (model.list) { item in
if item.UE == true {
Text(item.name)
} else {
Text("This isnt working")
}
}
DismissButton
}
}
I've tried displaying the item.UE to see what it would display but I get an error saying "No exact matches in call to initializer".
UserViewModel file
class UserViewModel: ObservableObject {
#Published var list = [Username]()
func addData(name: String, UE: Bool) {
//get a reference to the database
let db = Firestore.firestore()
// Add a new document in collection "username"
db.collection("usernames").document(UserDefaults.standard.object(forKey: "value") as! String).setData([
// MARK: Change the parameters to the users inputed choices
"name": name,
"UE": UE
]) { err in
if let err = err {
print("Error writing document: \(err)")
} else {
print("Document successfully written!")
}
}
}
func getData() {
//get a reference to the database
let db = Firestore.firestore()
//Read the documents at a specific path
db.collection("usernames").getDocuments { snapshot, error in
//checking for errors
if error == nil {
//no errors
if let snapshot = snapshot {
// update
DispatchQueue.main.async {
// Get all the documents and create usernames
self.list = snapshot.documents.map { d in
//Create a Username
return Username(id: d.documentID, name: d["name"] as? String ?? "", UE: (d["UE"] != nil)) //cast as a string and if not found return as a empty string
}
}
}
} else {
//Handle the error
}
}
}
}
Username model
struct Username: Identifiable {
var id: String
var name: String
var ue: Bool
}

Answer 1

Try this, with fixes for your ue in your getData, and
in the view display.
struct ContentView: View {
var body: some View {
AttendingUsersView()
}
}
struct AttendingUsersView: View {
#StateObject var model = UserViewModel() // <-- here
var body: some View {
VStack {
List (model.list) { item in
if item.ue { // <-- here
Text(item.name)
} else {
Text("This is working ue is false")
}
}
// DismissButton
}
}
}
class UserViewModel: ObservableObject {
// for testing
#Published var list:[Username] = [Username(id: "1", name: "item-1", ue: false),
Username(id: "2", name: "item-2", ue: true),
Username(id: "3", name: "item-3", ue: false)]
func addData(name: String, UE: Bool) {
//get a reference to the database
let db = Firestore.firestore()
// Add a new document in collection "username"
db.collection("usernames").document(UserDefaults.standard.object(forKey: "value") as! String).setData([
// MARK: Change the parameters to the users inputed choices
"name": name,
"UE": UE
]) { err in
if let err = err {
print("Error writing document: \(err)")
} else {
print("Document successfully written!")
}
}
}
func getData() {
//get a reference to the database
let db = Firestore.firestore()
//Read the documents at a specific path
db.collection("usernames").getDocuments { snapshot, error in
//checking for errors
if error == nil {
//no errors
if let snapshot = snapshot {
// update
DispatchQueue.main.async {
// Get all the documents and create usernames
self.list = snapshot.documents.map { d in
//Create a Username
// -- here, ue:
return Username(id: d.documentID, name: d["name"] as? String ?? "", ue: (d["UE"] != nil)) // <-- here ue:
}
}
}
} else {
//Handle the error
}
}
}
}
struct Username: Identifiable {
var id: String
var name: String
var ue: Bool
}