expense = $expense; } /** * Get the notification's delivery channels. * * @param mixed $notifiable * @return array */ public function via($notifiable) { return ['database']; } /** * Get the mail representation of the notification. * * @param mixed $notifiable * @return \Illuminate\Notifications\Messages\MailMessage */ public function toMail($notifiable) { } /** * Get the array representation of the notification. * * @param mixed $notifiable * @return array */ public function toDatabase($notifiable) { return [ 'transaction_id' => $this->expense->id, 'ref_no' => $this->expense->ref_no, ]; } }