config-manage/app/Transformers/ProvinceTransformer.php

<?php

namespace App\Transformers;

use App\Models\ConfigProvince;
use League\Fractal\TransformerAbstract;

class ProvinceTransformer extends TransformerAbstract
{

    public function transform(ConfigProvince $province)
    {
        return [
            'id'  => $province['id'],
            'parent_id'  => $province['parent_id'],
            'name'    => $province['name'],
            'level'    => $province['level'],
            'sort'    => $province['sort'],
        ];
    }
}