jcapi/app/api/controller/v1/SGB.php

<?php

namespace app\api\controller\v1;

use app\api\model\TestModel;

class SGB
{

    public function index()
    {
        $model_id = request()->param('model_id');
        $result = (new TestModel())->getProductInfo($model_id,$where='');
        return showSuccess($result);
    }
}