Ekapp/skolehjem/app/Notifications/PushNews.php

<?php

namespace App\Notifications;

use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Notifications\Messages\MailMessage;
use Illuminate\Notifications\Notification;
use NotificationChannels\WebPush\WebPushChannel;
use NotificationChannels\WebPush\WebPushMessage;

class PushNews extends Notification
{
    use Queueable;

    /**
     * Create a new notification instance.
     *
     * @return void
     */
    public function __construct()
    {
        //
    }

    public function via($notifiable)
    {
        return [WebPushChannel::class];
    }

    public function toWebPush($notifiable, $notification)
    {
        return (new WebPushMessage)
            ->title('Ny Nyhed')
            ->icon('/images/icons/appIcon.png')
            ->body('Der er en ny nyhed i ekapp\'en')
	        ->badge('/images/icons/appIcon.png')
            ->action('Se nyheder', route('root.index'));
    }

    /**
     * Get the mail representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return \Illuminate\Notifications\Messages\MailMessage
     */
    public function toMail($notifiable)
    {
        return (new MailMessage)
                    ->line('The introduction to the notification.')
                    ->action('Notification Action', url('/'))
                    ->line('Thank you for using our application!');
    }

    /**
     * Get the array representation of the notification.
     *
     * @param  mixed  $notifiable
     * @return array
     */
    public function toArray($notifiable)
    {
        return [
            //
        ];
    }
}