kknongchang_2506/app/Module/TransferOld/Validator/OutApp.php

<?php

namespace App\Module\TransferOld\Validator;

use App\Module\TransferOld\Model\TransferApp;
use Dcore\Validator;

class OutApp extends Validator
{

    public function validate(mixed $value, array $data): bool
    {
        $field = $this->args[0]??"transferApp";
        $app = TransferApp::query()->where('out_id2', $value)->first();
        if($app){
            $this->validationSet($field,$app);
            return true;
        }
        return false;
    }

}