How to retrieve a list in Firebase database folder? - ios

Question

I have a folder in my Database called "Cars", within the folder is a list of car brands, I want to retrieve all the brands and put it in a UITableView. Then when you press on a brand it will show the models of the brand. I have a trouble retrieving the list of cars at the moment. This is the screenshot of my Database and my code for the view controller.
import UIKit
import Firebase
import FirebaseDatabase
import SDWebImage
struct carStruct {
let cars : String!
}
class CarMakeViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
var cars = [carStruct]()
override func viewDidLoad() {
super.viewDidLoad()
let ref = Database.database().reference().child("Cars")
ref.observeSingleEvent(of: .value, with: { snapshot in
print(snapshot.childrenCount)
for rest in snapshot.children.allObjects as! [DataSnapshot] {
guard let value = rest.value as? Dictionary<String,Any> else { continue }
guard let make = value["Cars"] as? String else { continue }
let cars = carStruct(cars: make)
self.cars.append(cars)
}
self.cars = self.cars.reversed(); self.tableView.reloadData()
})
}
#IBOutlet weak var tableView: UITableView!
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return cars.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cellMake")
let label1 = cell?.viewWithTag(21) as! UILabel
label1.text = cars[indexPath.row].cars
return cell!
}
}

Answer 1

I think you should make another struct for holding data that is inside of the model of the car (so, for this struct you should dig little bit deeper). As for retrieving data now, I suggest you to read this article, which helped me a lot not long ago.