Why my TableView not updating cells which are fetched from database? - swift

Question

I have TableView and every cell contains one reservation fetched from Firestore. I added refresh controller but no data reloads. I don't know where can be a problem. When I changed one reservation status for eg. canceled in Firebase it changes but in tableview after reloads no UI label change to "canceled". I must to display another controller and go back to update UI label in cell.
override func viewDidLoad()
{
super.viewDidLoad()
reservationsTableView.delegate = self
reservationsTableView.dataSource = self
navigationItem.hidesBackButton = true
searchReservations = Reservations
refreshControl.addTarget(self, action: #selector(refresh(send: )), for: UIControl.Event.valueChanged)
reservationsTableView.addSubview(refreshControl)
loadReservations()
}
#objc func refresh(send: UIRefreshControl)
{
DispatchQueue.main.async {
self.loadReservations()
self.refreshControl.endRefreshing()
self.reservationsTableView.reloadData()
}
}
}
func loadReservations()
{
Reservations = []
guard let uid = Auth.auth().currentUser?.uid else { return }
let userCollection = Firestore.firestore().collection("Users")
let thisUserDoc = userCollection.document(uid)
let snapshot = thisUserDoc.collection("Reservations").getDocuments { (querySnapshot, error) in
if let e = error {
print(e)
}
else
{
if let snapshotDocuments = querySnapshot?.documents
{
for doc in snapshotDocuments
{
let data = doc.data()
// let rid = doc.documentID
if let Time = data["Time"] as? String, let Date = data["Date"] as? String, let Guests = data["Guests"] as? String, let RestaurantName = data["RestaurantName"] as? String, let Name = data["Name"] as? String, let Status = data["Status"] as? String, let Phone = data["Phone"] as? String, let Id = data["Id"] as? String, let RestaurantId = data["RestaurantID"] as? String, let Id2 = data["Id2"] as? String, let guestId = data["GuestId"] as? String
{
let newReservation = Reservation(id: Id, userId: guestId, id2: Id2,restaurantId: RestaurantId ,restaurantName: RestaurantName, name: Name, phone: Phone, guests: Guests, time: Time, date: Date, status: Status)
self.Reservations.append(newReservation)
DispatchQueue.main.async {
self.reservationsTableView.reloadData()
}
}
}
}
}
}
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return searchReservations.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: K.reusableCellReservationsC, for: indexPath) as! ReservationCellC
cell.guestName.text = searchReservations[indexPath.row].name
cell.contact.text = searchReservations[indexPath.row].phone
cell.reservationTime.text = searchReservations[indexPath.row].time
cell.reservationDate.text = searchReservations[indexPath.row].date
cell.reservationGuets.text = searchReservations[indexPath.row].guests
cell.reservationStatus.text = searchReservations[indexPath.row].status
cell.cancelBtn.tag = indexPath.row
cell.cancelBtn.addTarget(self, action: #selector(btnCanceledCellTapped(sender: )), for: .touchUpInside)
cell.confirmBtn.addTarget(self, action: #selector(btnConfirmedCellTapped(sender: )), for: .touchUpInside)
cell.lateBtn.addTarget(self, action: #selector(btnLateCellTapped(sender: )), for: .touchUpInside)
return cell
}

Answer 1

What's this line
searchReservations = Reservations
By the way you are appending reservations as below
self.Reservations.append(newReservation)
But you are having row count as
searchReservations.count
This is wrong. It has to be return Reservations.count or you must append values as self.searchReservations.append(newReservation)