Wrong Action when select "No" in Alert

[GlebGamaunov]

Now in app, when showing alert with "Are you sure you want to delete this post?", when select "No" Post deleted :-( How to fix this problem? @sergdort

let deleteTrigger = deleteButton.rx.tap.flatMap {
            return Observable<Void>.create { observer in

                let alert = UIAlertController(title: "Delete Post",
                    message: "Are you sure you want to delete this post?",
                    preferredStyle: .alert
                )
                let yesAction = UIAlertAction(title: "Yes", style: .destructive, handler: { _ -> () in observer.onNext(()) })
                let noAction = UIAlertAction(title: "No", style: .cancel, handler: { _ -> () in observer.onNext(()) })
                alert.addAction(yesAction)
                alert.addAction(noAction)

                self.present(alert, animated: true, completion: nil)

                return Disposables.create()
            }
        }

let input = EditPostViewModel.Input(
            editTrigger: editButton.rx.tap.asDriver(),
            deleteTrigger: deleteTrigger.asDriverOnErrorJustComplete(),
            title: titleTextField.rx.text.orEmpty.asDriver(),
            details: detailsTextView.rx.text.orEmpty.asDriver()
        )