Как определить переменную page_url массиве ленты RSS?

<link><br /><b>Notice</b>:  Undefined index: page_url in <b>.../templates/default/controllers/rss/feed.tpl.php</b> on line <b>42</b><br /></link>
<guid><br /><b>Notice</b>:  Undefined index: page_url in <b>.../templates/default/controllers/rss/feed.tpl.php</b> on line <b>43</b></guid>

$feed['items'] = $this->model->getMycomponentItems($feed['ctype_name'], function ($item, $model, $ctype_name){
 
            $item['page_url'] = href_to_abs($ctype_name, 'item', $id);
 
            return $item;
 
        });

$item['page_url'] = href_to_abs($ctype_name, $item['id']);

$item['page_url'] = '123456';

$item['page_url'] = '123456';

<?php
 
class onMycomponentRssFeedList extends cmsAction {
 
	public function run($feed){
 
 
        $category = $author = array();
 
 
        $this->model->orderBy('date_pub', 'desc')->
		limit($feed['limit']);
 
 
 
 
        $feed['items'] = $this->model->getMcItems($feed['ctype_name'], function ($item, $model, $ctype_name){
 
            $item['page_url'] = href_to_abs($ctype_name, $item['slug'].'.html');
            /*$item['comments_url'] = $item['page_url'].'#comments';*/
 
 
            return $item;
 
        });
 
       $feed = cmsEventsManager::hook('before_render_'.$feed['ctype_name'].'_feed_list', $feed);
 
        return array($feed, $category, $author);
 
    }
 
}
 

        $feed['items'] = $this->model->getMcItems($feed['ctype_name'], function ($item){
 
            $item['page_url'] = '123456';
 
 
            return $item;
 
        });
dump($feed);
 

        return $this->get($ctype_name, function ($item){
            $item['page_url'] = '123456';
            return $item;
        });