Data Parsing firebase - ios

Question

I plan to retrieval data from Database Firebase to TableView by this code what is wrong with my code and how can i fix it to let all details send to my table view
Firebase database
Run at Phone
And this is my data in the database:
import UIKit
import Firebase
class Ordersv: UIViewController, UITableViewDataSource, UITableViewDelegate {
var array = [String]()
var ref: DatabaseReference!
var handle: DatabaseHandle!
#IBOutlet weak var TableView: UITableView!
#IBAction func add (_ sender: Any){
if textField.text != ""{
ref.child("list").childByAutoId().setValue(textField.text)
textField.text = ""
}
}
#IBOutlet weak var textField: UITextField!
override func viewDidLoad() {
super.viewDidLoad()
handle = ref?.ref.child ("Orders/Customer/Detils/").observe(.value, with: { (snapshot) in
if let item = snapshot.value as? String {
self.array.append(item)
self.TableView.reloadData()
}
})
self.TableView.delegate = self
self.TableView.dataSource = self
// Do any additional setup after loading the view.
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return array.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = TableView.dequeueReusableCell(withIdentifier: "Cell")! as UITableViewCell
cell.textLabel?.text = array[indexPath.row]
return cell
}
}

Answer 1

There are a few things wrong wit the code:
You never initialize ref.
When you observe .value, you get multiple nodes back. Your code doesn't handle this fact.
To fix both, I recommend:
let ref = Database.database().reference()
handle = ref.child("Orders/Customer/Detils/").observe(.childAdded, with: { (snapshot) in
let value = snapshot.value as? NSDictionary
let name = value?["Name"] as? String ?? ""
self.array.append(name)
self.TableView.reloadData()
})
The above code observes the .childAdded event, which fires immediately for each existing child node, and then once for every subsequent child that is added.