Saving Checkmarks on TableView loaded from Firebase Database Swift - ios

Question

So im populating a table View from firebase database. I am able to add and remove check marks. But i can't seem to figure out how to save it. Since the tableView reloads the data every time the view appears.
here is my view controller
import UIKit
import FirebaseDatabase
import Firebase
class guestListViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
#IBOutlet weak var guestListTableView: UITableView!
var guestListDBRef : DatabaseReference!
var guestListText = [AdminTextModel]()
var keyArray : [String] = []
override func viewDidLoad() {
super.viewDidLoad()
guestListDBRef = Database.database().reference().child("RSVP")
guestListDBRef.queryOrdered(byChild: "name").observe(DataEventType.value, with: {(snapshot) in
if snapshot.childrenCount > 0 {
for guestListLabel in snapshot.children.allObjects as! [DataSnapshot] {
let guestListTextObject = guestListLabel.value as? [String: AnyObject]
let name = guestListTextObject?["name"]
let date = guestListTextObject?["date"]
let guestListTextLabels = AdminTextModel(name: name as! String?, date: date as! String?)
self.guestListText.append(guestListTextLabels)
self.guestListTableView.rowHeight = 45
self.guestListTableView.reloadData()
self.getKeys()
}
}
})
// Do any additional setup after loading the view.
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return guestListText.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let guestListTextCell = tableView.dequeueReusableCell(withIdentifier: "guestList") as! guestListTableViewCell
let text: AdminTextModel
text = guestListText[indexPath.row]
guestListTextCell.guestListNameLabel.text = text.name
guestListTextCell.guestListDateLabel.text = text.date
return guestListTextCell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if tableView.cellForRow(at: indexPath)?.accessoryType == UITableViewCellAccessoryType.checkmark {
tableView.cellForRow(at: indexPath)?.accessoryType = UITableViewCellAccessoryType.none
} else {
tableView.cellForRow(at: indexPath)?.accessoryType = UITableViewCellAccessoryType.checkmark
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}
My AdminTextModel
import Foundation
class AdminTextModel {
var name: String?
var date: String?
init(name: String?, date: String?) {
self.name = name
self.date = date
}
}
And my TableViewCell
import UIKit
class guestListTableViewCell: UITableViewCell {
#IBOutlet weak var guestListDateLabel: UILabel!
#IBOutlet weak var guestListNameLabel: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
Let me know if you have any input!
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Answer 1

Change your model to this
class AdminTextModel {
var name: String?
var date: String?
var isChecked: Bool?
init(name: String?, date: String?, isChecked: Bool?) {
self.name = name
self.date = date
self.isChecked = isChecked
}
}
The isChecked property should also be saved in your firebase database
Now fetch the data and set the checkmark to true or false based on the isChecked property.
This will retain the checkmark even after reloading the screen

Answer 2

Thank you!, I went ahead and implemented that iParesh, but i think my issue lies here. Since im using childByAutoID.
let onlinesRef = Database.database().reference().child("RSVP").child("yourchild name")

Answer 3

As per Moaz Khan change model class and also need to change in cellForRowAt with below code
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let guestListTextCell = tableView.dequeueReusableCell(withIdentifier: "guestList") as! guestListTableViewCell
let text: AdminTextModel
text = guestListText[indexPath.row]
guestListTextCell.guestListNameLabel.text = text.name
guestListTextCell.guestListDateLabel.text = text.date
if text.isChecked {
cell.accessoryType = .checkmark
}else {
cell.accessoryType = .none
}
return guestListTextCell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let isChecked = !self.guestListText[indexPath.row].isChecked
let key = self.guestListText[indexPath.row].key
Checkedservice.checkuncheck(key: key, isChecked: isChecked) { (seccess) in
guard seccess else { return }
self.guestListText[indexPath.section].isChecked = isChecked
self.tableView.reloadRows(at: [indexPath], with: .none)
}
}
Check mark service for firebase
struct Checkedservice {
static func checkuncheck(key: String, isChecked: Bool, success: #escaping (Bool) -> Void) {
let onlinesRef = Database.database().reference().child("RSVP").child(key).child("isChecked")
onlinesRef.setValue(isChecked) {(error, _ ) in
if let error = error {
assertionFailure(error.localizedDescription)
success(false)
}
success(true)
}
}
}
Update model class
class AdminTextModel {
var key: String?
var name: String?
var date: String?
var isChecked: Bool?
init(key: String?, name: String?, date: String?, isChecked: Bool?) {
self.key = key
self.name = name
self.date = date
self.isChecked = isChecked
}
}