Laravel Notification - via specified by user

Question

How can the method via in a notification class can be dinamic by the users preferences, one user maybe want to receive via email, the other one, dont

public function via($notifiable) {
    return ['database', 'broadcast', 'mail'];
}

Answer 1

That function is receiving the User ($notifiable) as a parameter, you could call a method on the $notifiable to retrieve the list of channels you want the notification to use.

public function via($notifiable) {
    return $notifiable->getNotificationPreferences();
}