portal.mkgtu.ru/frontend/modules/api/v1/resources/User.php

<?php

namespace frontend\modules\api\v1\resources;




class User extends \common\models\User
{
    public function fields()
    {
        return ['id', 'username', 'created_at'];
    }

    public function extraFields()
    {
        return ['userProfile'];
    }
}