How is tableview implicitly reloaded when I deleted an object from realm? - ios

Question

I have a tableview where I am using SwipeCellkit for custom cell deletion. When the delete button is pressed I delete the specified object in realm,
however, I did not reload the tableview but still the tableview row has been deleted. I want to know how it has done (is realm doing implicit tableview reloading?)
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = super.tableView(tableView, cellForRowAt: indexPath)
cell.textLabel?.text = categoryArray?[indexPath.row].name
return cell
}
func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath, for orientation: SwipeActionsOrientation) -> [SwipeAction]? {
guard orientation == .right else { return nil }
let deleteAction = SwipeAction(style: .destructive, title: "Delete") { action, indexPath in
// handle action by updating model with deletion
self.updateModel(at: indexPath)
}
// customize the action appearance
deleteAction.image = UIImage(named: "delete-icon")
return [deleteAction]
}
func updateModel(at indexPath: IndexPath) {
if let category = self.categoryArray?[indexPath.row]
{
do{
try self.realm.write {
self.realm.delete(category)
}
}catch{
print("eror deleting object")
}
}
}

Answer 1

This has nothing to do with the Realm.
This is because of the deleteAction that you're returning in editActionsForRowAtIndexPath method.
More precisely, the SwipeActionStyle.destructive is responsible for creating a delete action.
As mentioned in the docs:
The built-in .destructive, and .destructiveAfterFill expansion styles
are configured to automatically perform row deletion when the action
handler is invoked (automatic fulfillment).
Hope this helps