IOS TableView how can I update an element in my TableView - swift

Question

I am using Swift 4 and I finally got my TableView cell working correctly . I have a like button and when a user clicks it I update only the cell that was clicked and show a new image either like or unliked, in addition I show a LikeCounter +1 for like and -1 for unlike .That's all working.
My question is how can I make it so that I only update those 2 elements on button clicked ?
right now it updates the Table View Cell . This is my code
#IBAction func voteAction(_ sender: UIButton)
{
if let indexPathm = TableView.indexPathForView(sender) {
if streamsModel.VoteStatus[sender.tag] == "0" {
streamsModel.VoteStatus[sender.tag] = "1"
streamsModel.Votes[sender.tag] = streamsModel.Votes[sender.tag] + 1
} else {
streamsModel.VoteStatus[sender.tag] = "0"
streamsModel.Votes[sender.tag] = streamsModel.Votes[sender.tag] - 1
}
TableView.reloadRows(at: [indexPathm],with: .none)
}
}
Once you click that button then it goes here
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "HomeTVC", for: indexPath) as! HomeTVC
cell.vote_status = streamsModel.VoteStatus[indexPath.row]
if streamsModel.VoteStatus[indexPath.row] != "0" {
cell.voteImage.setImage(UIImage(named: "liked"), for: .normal)
} else {
cell.voteImage.setImage(UIImage(named: "unliked"), for: .normal) }
}
I have a lot more cell elements in that TableViewCell however I would only like to update and isolate that specific piece of code in my TableViewCell .
I have tried doing it using this method Update label in custom UITableView Cell however I find that if I scroll down and then back up it reverts whatever changes I did .
// This works however if you scroll down then back up
// it reverts back to the original status
let button = sender as! UIButton
let view = button.superview!
let cell = view.superview as! HomeTVC
let indexPath = tableView.indexPathForCell(cell)
println(indexPath)
if(indexPath != nil){
if streamsModel.VoteStatus[indexPath.row] != "0" {
cell.voteImage.setImage(UIImage(named: "liked"), for: .normal)
} else {
cell.voteImage.setImage(UIImage(named: "unliked"), for: .normal) }
}
}
So now I'm calling but it's updating the whole cell .
TableView.reloadRows(at: [indexPathm],with: .none)

Answer 1

You can retrieve the cell and update only the properties of the cell directly like this:
if let cell = tableView.cellForRow(at: indexPath) as? HomeTVC {
// Update the cell
}
EDIT:
I missed the second part of the question, sorry. I think that the problem here is that you're not updating your model, so when you scroll up the delegate calls tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) and sets the value as saved previously on the model. You have to update the value of streamsModel.VoteStatus when the button is pressed.