I want to show some related product in magento theme. For that I updated catalog.xml file with following code.

<reference name="content">
<block type="catalog/product_view" name="product.info" template="catalog/product/view.phtml">
<block type="catalog/product_list_related" name="catalog.product.related" as="related" template="catalog/product/list/related.phtml"/>

And added below code in catalog/product/view.phtml file.

<?php echo $this->getChildHtml('related'); ?>

After this few changes I got this error

 Fatal error: Call to a member function addToChildGroup() on a non-object in magento/app/code/core/Mage/Core/Block/Abstract.php on line 815

Please suggest what could be the issue of this error.

  • on which file this is show the error
    – Amit Bera
    Commented Oct 30, 2014 at 11:14
  • It shows on product detail page Commented Oct 30, 2014 at 11:19
  • Please post the full catalog.xml catalog_product_view section and any snippets from other layout xml files like a custom theme one that might influence this. My guess is somewhere the reference is being added to a parent group. Have you tried using another name or as for the block? Commented Apr 14, 2015 at 6:45

2 Answers 2


Try using the following snippet for the related block xml it appears you are missing some information that this block needs.

<block type="catalog/product_list_related" name="catalog.product.related" as="related" after="product.info.upsell" template="catalog/product/list/related.phtml">
  <action method="setColumnCount">
  <action method="setItemLimit">
  • Thanks for the code, But this also not worked.. Commented Oct 31, 2014 at 5:50

Please use the following code

<?php echo $this->getChildHtml('catalog.product.related'); ?>

in place of

<?php echo $this->getChildHtml('related'); ?>
  • I did not agree with your solution because I am using as="related" in xml, so both option will work. There is another issue in my code. Which I am not able to figure out. Commented Oct 31, 2014 at 5:48

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