Комментарии - отображение доп. полей вместо/вместе с ником

            $item['user'] = [
                'id'         => $item['user_id'],
                'slug'       => $item['user_slug'],
                'nickname'   => $item['user_nickname'],
                'is_online'  => $item['is_online'],
                'avatar'     => $item['user_avatar'],
                'is_deleted' => empty($item['user_date_log']) || $item['user_is_deleted'],
                'surname' => $this->getField('cms_users', $item['user_id'], 'surname'),
                'firstname' => $this->getField('cms_users', $item['user_id'], 'firstname')
            ];

<a href="<?php echo $author_url; ?>" class="user <?php if($entry['user_id'] && $target_user_id == $entry['user_id']){?>btn btn-success btn-sm border-0<?php } ?>">
<?php echo $entry['user']['nickname'].' ('.$entry['user']['surname'].' '.$entry['user']['firstname'].')'; ?></a>

$model->select('u.firstname', 'user_firstname');
$model->select('u.surname', 'user_surname');

$entry['user_firstname']
$entry['user_surname']