====== Mostrar Atributs a la graella de productes ======
El mètode Mage_Catalog_Block_Product_List ja el tenim creat a **app/code/core/Mage/Catalog/Block/Product/List.php**

<code>
public function addAttribute($code)
{
  $this->_getProductCollection()->addAttributeToSelect($code);
  return $this;
}
</code>

Editem app/design/frontend/<template>/default/layout/catalog.xml

Busquem la línia comentada **Category default layout** i afegim el action del atribut que volem afegir, per exemple, manufacturer.

<code>
<block type="catalog/product_list" name="product_list" template="catalog/product/list.phtml">
  <action method="addAttribute"><attribute>manufacturer</attribute></action>
</block>
</code>

Editem app/design/frontend/<template>/default/template/catalog/product/list.phtml

Afegim dins del foreach de **Grid Mode** i List mode**
<code>
<!-- these are regular text attributes -->
<?php echo $_product->getMyAttribute()?><br />
<?php echo $_product->getAnotherCustomAttribute()?>
</code>

I a la posició que volem mostrar els atributs:
  <?php echo $_product->getAttributeText('your_attribute')?>

Per exemple:
  <?php echo $_product->getAttributeText('manufacturer')?>

Documentació extreta de [[http://www.magentocommerce.com/wiki/how-to/add-attributes-to-product-grid| How to add attributes to product grid in category]]