Order.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Str;

class Order extends Model
{
    use HasFactory;

    protected $fillable = ["token"];

    protected static function boot()
    {
        parent::boot();
        self::creating(function(Order $order) {
            do {
                $token = Str::uuid();
            } while (Order::where("token", $token)->first() instanceof Order);
            $order->token = $token;
        });
    }
}