Hide Cell when the condition is met - swift

Question

Hello StackOverflowers!
I am trying to hide cells when condition is met - in this case when the user survey comment is empty. The data is loaded from Firebase This is what I have tried so far: hiding the cell as well as selecting it. Then follow with heightForRow for selectedRows. But it's not working. Please help! Thank you~~~
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return comment.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "CommentsTableCell", for: indexPath) as! CommentsCell
let surveyCommentList = self.comment[indexPath.row]
cell.selectionStyle = UITableViewCell.SelectionStyle.none
if surveyCommentList.surveyComment == "" {
cell.isHidden = true
cell.isSelected = true
} else {
cell.surveyCommentText.text = surveyCommentList.surveyComment
}
return cell
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
if let selectedRows = tableView.indexPathsForSelectedRows, selectedRows.contains(indexPath) {
return 0
} else {
return 50
}
}

Answer 1

This is the correct implementation :
// Define a new filtered array from your comments that filters empty Comments
let filteredComments = comment.filter({!$0.surveyComment.isEmpty)
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return filteredComments.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "CommentsTableCell", for: indexPath) as! CommentsCell
let surveyCommentList = self.filteredComments[indexPath.row]
cell.selectionStyle = UITableViewCell.SelectionStyle.none
cell.surveyCommentText.text = surveyCommentList.surveyComment
}
return cell
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 50
}