Duplicate content in K2

You have to modify some code from K2 template files, it is recommended to make a good document or override changes are to be made to avoid problems in future updates of the component.

For items of K2 must components/com_k2/templates/default/item.php modify the file add the following code:

<?php
if ($this->item->link!= JRequest::getURI()) JApplication::redirect($this->item->link,'','' ,true);
?>

For the categories of K2 have to modify the file components/com_k2/templates/default/category_item.php add the following code:

<?php
$this->original_link = JRoute::_(K2HelperRoute::getCategoryRoute(JRequest::getVar('id'),
0));
if (JRequest::getInt('start') > 0) $this->original_link .= "?start=" . JRequest::getVar('start');
$this->real_link = JRequest::getURI();
if ($this->original_link != $this->real_link) JApplication::redirect($this->original_link,'','' ,true);
?>
These changes redirect all duplicate url's to a single URL.

If you have installed the Xmap Sitemap component Generartor also have a problem with the URL's of K2, to solve it you have to make a few small changes to the code of Xmap plugin for K2.

We have to modify the file com_k2.php normally found in the directory plugins/xmap/com_k2.

Change the following line, which is in about 317:

$node->link = 'index.php?option=com_k2&view=itemlist&task=category&id='.$row->id.':'.$row->alias;

To

$node->link = 'index.php?option=com_k2&view=itemlist&task=category&id='.$row->id.':'.$row->alias . '&Itemid=' .$parent->id;

For url's of the categories, change the following line, which is in about 323:

$node->link = 'index.php?option=com_k2&view=item&id='.$row->id.':'.$row->alias;

To

$node->link = 'index.php?option=com_k2&view=item&id='.$row->id.':'.$row->alias . '&Itemid=' .$parent->id;

If we want Google not to index K2 tags, which are cosideradas duplicate content as we add the following line to your robots.txt file:

Disallow: */itemlist/tag/*

Performing these actions improve the SEO of our website with Joomla! and K2.