Function creating 2 identical instances of class instead of only 1 - swift

Question

I am relatively new to iOS development, any help will be greatly appreciated!
I'm trying to create a new instance of a class 'Event'.
class Event {
var EventName: String
var EventPhoto: UIImage?
init?(EventName: String, EventPhoto: UIImage?) {
guard !EventName.isEmpty else {
return nil
}
// Initial initilization of the values
self.EventName = EventName
self.EventPhoto = EventPhoto
// If some of the values are left blank, this will return nil to signal the problem
}
}
Below is the override function, which from my understanding is responsible for creating the instance:
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
super.prepare(for: segue, sender: sender)
guard let button = sender as? UIBarButtonItem, button === saveButton else {
os_log("Cancelling Action, The Save Button Was not Pressed", log: OSLog.default,type: .debug)
return
}
let EventName = NewEventNameField.text ?? ""
let EventPhoto = NewEventImage.image
event = Event(EventName: EventName, EventPhoto: EventPhoto)
}
From my understanding, the override function should create a new instance of the class, which would then be displayed in a table view controller displaying a table of 'events'. My problem here is; when the function is called by the "create instance" button, it creates 2 identical instances with the same EventName and EventPhoto extracted from a textfield and an image in the view controller. In the tableview, there are basically 2 events that are exactly the same being displayed, which is what I am having trouble with since I don't see the code calling init twice anywhere, and can't figure out why the instances was created twice. After being created the 2 instances act independently and function like 2 separate instances would.
Thanks!

Answer 1

Thank You for the help, I found the issue in TableViewController's code file:
#IBAction func unwindToEventList(sender: UIStoryboardSegue){
if let sourceViewController = sender.source as?
NewEventViewController, let event = sourceViewController.event{
if let selectedIndexPath = tableView.indexPathForSelectedRow {
events[selectedIndexPath.row] = event
tableView.reloadRows(at: [selectedIndexPath], with: .none)
} else {
//Adding a new event instead of editing it.
let newIndexPath = IndexPath(row: events.count, section: 0)
events.append(event)
tableView.insertRows(at: [newIndexPath], with: .automatic)
}
//let newIndexPath = IndexPath(row: events.count, section: 0)
//events.append(event)
//tableView.insertRows(at: [newIndexPath], with: .automatic)
}
}
Turns out that I accidentally appended the instance to the list events and inserted it into the table an extra time outside the if statement.