swift Passing data from containverView error - swift

Question

Heloo, i have this problem when im using contaienerView with static tableview. i want to pass my data from my main view controller to my tableview, and im having this break where it said my data is null, but it wasnt null because i already fill that data that i want to pass in. im using firebase and dictionary. heres my code :
my main controller :
class MainController: UITableViewController, AddPatientController {
private var patientLists = [PatientList]() // empty array buat isi list yg isinya nama pasien
var Segue : String = "PatientName"
var Segue2 : String = "PatientNotes"
let user : User = Auth.auth().currentUser!
private var rootRef : DatabaseReference!
override func viewDidLoad() {
super.viewDidLoad()
self.rootRef = Database.database().reference()
populateList()
}
private func populateList() {// 5. func buat fetch data dari db ke hp
self.rootRef.child(self.user.emailWithoutSpecialChar).observe(.value) { (snapshot) in
self.patientLists.removeAll()
let pasienListDict = snapshot.value as? [String:Any] ?? [:] //7. ini berarti return buat kl dict nya kosong, ini buat akses ke valuenya yg isinya itu dict[String:Any]
for (key,_) in pasienListDict {
if let pasienlistdict = pasienListDict[key] as? [String:Any]{
if let pasienlist = PatientList(pasienlistdict) {
self.patientLists.append(pasienlist)
// ini buat ngemasukin ke dalem dictionarynya, ini buat store datanya dan ngambil datanya dari firebase db
}
}
}
DispatchQueue.main.async {
self.tableView.reloadData()
}
}
} override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == Segue {
let nc = segue.destination as! UINavigationController
let addPatientName = nc.viewControllers.first as! AddListController
addPatientName.delegate = self
}
else if segue.identifier == Segue2 {
guard let indexPath = self.tableView.indexPathForSelectedRow else {return}
let nc = segue.destination as! PasienProfileController
nc.pasien = self.patientLists[indexPath.row]
}
}
and this is my controller that should recieve the data
class NotesController: UITableViewController, AddNotesDelegate {
var pasien : PatientList!
private var rootRef : DatabaseReference!
var Segue1 : String = "AddNotes"
var Segue2 : String = "PasienNotes"
override func viewDidLoad() {
super.viewDidLoad()
self.title = pasien.name // this is the line where my code break cause it says the data is null
self.rootRef = Database.database().reference()
}
my pasienprofilecontroller and my pasienProfileTableController( the containverView one) :
class PasienTableController: UITableViewController {
#IBOutlet weak var dataKunjunganLbl: UILabel!
#IBOutlet weak var diagnosaPasienLbl: UILabel!
#IBOutlet weak var alergiPasienLbl: UILabel!
var delegete : PasienTableControllerDelegate?
var patientList = [PatientList]()
override func viewDidLoad() {
super.viewDidLoad()
tableView.dataSource = self
tableView.delegate = self
}
class PasienProfileController: UIViewController {
#IBOutlet weak var TinggiLbl: UILabel!
#IBOutlet weak var beratLbl: UILabel!
#IBOutlet weak var GolDarahLbl: UILabel!
#IBOutlet weak var NamaLbl: UILabel!
#IBOutlet weak var ImagePic: UIImageView!
var pasien : PatientList!
#IBOutlet weak var ContainerView: UIView!
override func viewDidLoad() {
super.viewDidLoad()
self.ImagePic.makeRounded()
self.NamaLbl.text = pasien.name
}
this is the image of my storyboard to get a clear picture of what im trying to do
so my "Patient" view controller is my main controller, which after that it will show the profile pasien controller, which is uiview with container view that contain static tableview. and when i try to hit that " Data Kunjungan Pasien" Cell, it gets the error
so is theres something wrong with my logic? why it keep saying null while it can successfully show the data from Patient view to patientProfileView?
*this is my git if you guys wanna clone and check my error https://gitlab.com/afipermanaa/skripsi.git
Thanks for the help

Answer 1

I dont get it
if you want to pass the data from prepareForSegue with this code
else if segue.identifier == Segue2 {
guard let indexPath = self.tableView.indexPathForSelectedRow else {return}
let nc = segue.destination as! PasienProfileController
nc.pasien = self.patientLists[indexPath.row]
}
to NotesController why do you cast "nc" as PasienProfileController ?
its not the same class
i don't see where you set pasien value.
I hope it helps you if not please explain

Answer 2

cannot comment due to low rep, so I tried to explain it as clear as possible.
you may try to define that variable
private var patientLists = [PatientList]()
as static like below.
private static var patientLists = [PatientList]()
when you try to pass it through segue with this code
let nc = segue.destination as! PasienProfileController
nc.pasien = self.patientLists[indexPath.row]
your class creates a new instance of patientList array when there is 'self'. so, when you define as static, there won't be any new instance of it.

Answer 3

private static var patientLists = [PatientList]()