Firebase Retrieve Image as Url pass tableView as Image (Swift) - ios

Question

I'm trying to retrieve my data as URL and pass my another viewController.
Here is my retrieve data's code:
private func loadPlaces() {
let ref = FIRDatabase.database().reference()
ref.child("places").queryOrderedByKey().observeSingleEvent(of: .value, with: { snapshot in
let images = snapshot.value as! [String : AnyObject]
// self.places.removeAll()
for (_, value) in images {
let userToShow = historicalPlaces()
if let img = value["imagePath"] as? String,
let name = value["name"] as? String,
let information = value["information"] as? String
{
userToShow.historyImage = img
userToShow.historyName = name
userToShow.information = information
self.places.append(userToShow)
}
}
self.tableView.reloadData()
})
// ref.removeAllObservers()
}
In this code I'm using extension which can read URL.
Extension code here.
extension UIImageView {
func downloadImage(from imgURL: String!) {
let url = URLRequest(url: URL(string: imgURL)!)
let task = URLSession.shared.dataTask(with: url) {
(data, response, error) in
if error != nil {
print(error!)
return
}
DispatchQueue.main.async {
self.image = UIImage(data: data!)
}
}
task.resume()
}
}
and here I print my images and labels to viewController.
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cellIdentifier = "historyTableViewCell"
guard let cell = tableView.dequeueReusableCell(withIdentifier: cellIdentifier, for: indexPath) as? HistoryTableViewCell else {
fatalError("The dequeued cell is not an instance of historyTableViewCell.")
}
let place = places[indexPath.row]
cell.nameLabel.text = place.historyName
cell.photoImageView.downloadImage(from: place.historyImage!)
return cell
}
and this is the cell control code:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
super.prepare(for: segue, sender: sender)
switch(segue.identifier ?? "") {
case "ShowDetail":
guard let historyDetail = segue.destination as? selectedPlaceViewController else {
fatalError("Unexpected destination: \(segue.destination)")
}
guard let selectedPlace = sender as? HistoryTableViewCell else {
fatalError("Unexpected sender: \(sender)")
}
guard let indexPath = tableView.indexPath(for: selectedPlace) else {
fatalError("The selected cell is not being displayed by the table")
}
let Place = places[indexPath.row]
historyDetail.selectedPlaces = Place
default:
fatalError("Unexpected Segue Identifier; \(segue.identifier)")
}
}
now whenever I click the cell which has view and label print it's images and labels to another viewController.
I try something like this:
import UIKit
class selectedPlaceViewController: UIViewController, UITextFieldDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
#IBOutlet weak var nameTextField: UITextField!
#IBOutlet weak var photoImageView: UIImageView!
var selectedPlaces: historicalPlaces?
override func viewDidLoad() {
super.viewDidLoad()
nameTextField.delegate = self
if let history = selectedPlaces {
navigationItem.title = history.historyName
nameTextField.text = history.historyName
// photoImageView.downloadImage(from: selectedPlaces [IndexPath.init(row: 0, section: 0)].historyImage!)
}
}
}
In this code I can retrieve labels from another viewController but I can't retrieve images. How can I retrieve Images from another viewCell URL to image.