User profile information is not showing up using swift and firestore database - swift

Question

pic of database
I am trying to show a label with the user's status on their profile page. after logging in the user gets presented with a VC that has a side menu. on that side menu is a "profile" option. once choosing this they go to their profile controller. right now i simply need to search users/current uid/ "MembershipStatus" and present this result into a label called "welcomeLabel".
I am returning nul
import UIKit
import Firebase
class NonMemberProfileController: UIViewController {
// MARK: - Properties
var welcomeLabel: UILabel = {
let label = UILabel()
label.textColor = .white
label.font = UIFont.systemFont(ofSize: 28)
label.translatesAutoresizingMaskIntoConstraints = false
label.alpha = 0
return label
}()
// MARK: - Init
override func viewDidLoad()
{
super.viewDidLoad()
authenticateUserAndConfigureView()
}
func loadUserData()
{
guard let uid = Auth.auth().currentUser?.uid else {return}
//.child("MembershipStatus")
Database.database().reference().child("users").child(uid).observeSingleEvent(of: .value) {
(snapshot) in
if snapshot.hasChild("MembershipStatus"){
print("true we have bingo")
} else {
print("no bueno")
dump(snapshot)
}
guard let status = snapshot.value as? String else { return }
self.welcomeLabel.text = "Welcome, \(status)"
print("this is lkjfdskjklsfad" + status)
UIView.animate(withDuration: 0.5, animations: {
self.welcomeLabel.alpha = 1
})
}
}
func authenticateUserAndConfigureView(){
if Auth.auth().currentUser == nil {
DispatchQueue.main.async {
let navController = UINavigationController(rootViewController: LoginViewController())
navController.navigationBar.barStyle = .black
self.present(navController, animated: true, completion: nil)
}
} else {
configureNavigationBar()
loadUserData()
}
}
// MARK: - Selectors
#objc func handleDismiss() {
dismiss(animated: true, completion: nil)
}
// MARK: - Helper Functions
func configureNavigationBar() {
view.backgroundColor = UIColor.lightGray
navigationItem.title = "Profile"
navigationController?.navigationBar.barTintColor = .darkGray
navigationController?.navigationBar.barStyle = .black
navigationItem.leftBarButtonItem = UIBarButtonItem(image: #imageLiteral(resourceName: "Home_2x").withRenderingMode(.alwaysOriginal), style: .plain, target: self, action: #selector(handleDismiss))
navigationItem.rightBarButtonItem = UIBarButtonItem(image: #imageLiteral(resourceName: "baseline_settings_white_24dp").withRenderingMode(.alwaysOriginal), style: .plain, target: self, action: #selector(handleDismiss))
view.addSubview(welcomeLabel)
welcomeLabel.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
welcomeLabel.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
}
}

Answer 1

You are using Cloud Firestore for data storage but your code is reading data form RealTime Database. You have to read data like this:
let userRef = Firestore.firestore().collection("users").document(uid)
userRef.getDocument { (documentSnapshot, error) in guard
let document = documentSnapshot?.data() else {
print(error)
return
}
print(document)
}