Delegate method is not being called and giving a nil value - ios

Question

For some reason, the delegate method is not being called. I am printing the delegate property in the console but it returns nil. I was looking for other answers here, but none of them were helpful for me.
protocol FilterSwitchDelegate {
func switchValueChanged(tagValue:Int)
}
class FilterTableViewCell: UITableViewCell {
#IBOutlet weak var filterLabel: UILabel!
#IBOutlet weak var filterSwitch: UISwitch!
var delegate:FilterSwitchDelegate?
#IBAction func filterSwitchValueChanged(_ sender: UISwitch) {
print(sender.tag)
delegate?.switchValueChanged(tagValue: sender.tag)
}
}
//In FilterViewController I am calling this delegate method
class FilterViewController: UIViewController {
#IBOutlet weak var tableView: UITableView!
var dataSource = FilterTableViewCell()
var filterModel = [FilterVCDataModel]()
var ids = [Int]()
override func viewDidLoad() {
super.viewDidLoad()
dataSource.delegate = self
}
}
extension FilterViewController: FilterSwitchDelegate {
func switchValueChanged(tagValue: Int) {
ids.remove(at: tagValue)
print(ids)
}
}
TableView dataSource and delegate methods
extension FilterViewController:UITableViewDelegate,UITableViewDataSource{
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return filterModel.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "filterCell", for: indexPath) as! FilterTableViewCell
cell.filterSwitch.tag = indexPath.row
cell.filterLabel.text = filterModel[indexPath.row].filterData["title"] as? String
return cell
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 66
}
}

Answer 1

in the cellForRow you have to dequeue your cell.
let cell = tableView.dequeueReusableCell(withIdentifier: "yourId") as? FilterTableViewCell
cell.delegate = self
return cell
and the job is done