einundzwanzig-app/app/Notifications/ModelCreatedNotification.php

<?php

namespace App\Notifications;

use Illuminate\Bus\Queueable;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Notifications\Messages\MailMessage;
use Illuminate\Notifications\Notification;

class ModelCreatedNotification extends Notification implements ShouldQueue
{
    use Queueable;

    /**
     * Create a new notification instance.
     * @return void
     */
    public function __construct(public $model, public string $resource)
    {
        //
    }

    /**
     * Get the notification's delivery channels.
     *
     * @param  mixed  $notifiable
     */
    public function via($notifiable): array
    {
        return ['mail'];
    }

    /**
     * Get the mail representation of the notification.
     *
     * @param  mixed  $notifiable
     */
    public function toMail($notifiable): MailMessage
    {
        return (new MailMessage)
            ->subject('New model created: '.get_class($this->model))
            ->line('Model: '.get_class($this->model))
            ->action('Show', url('/nova/resources/'.$this->resource))
            ->line(' ')
            ->line(' ')
            ->line(' ')
            ->line($this->model->toJson());
    }

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