/**
* Retrieve related product collection assigned to product
*
* @throws Mage_Core_Exception
* @return Mage_Catalog_Model_Resource_Eav_Mysql4_Product_Collection
*/
public function getLinkCollection()
{
if (is_null($this->_linkCollection)) {
parent::getLinkCollection();
/**
* Updating collection with desired items
*/
Mage::dispatchEvent('catalog_product_upsell', array('product' => $this->getProduct(), 'collection' => $this->_linkCollection, 'limit' => $this->getPositionLimit()));
}
return $this->_linkCollection;
}
/**
* Get ids of all related products
*
* @return array
*/
public function getAllIds()
{
if (is_null($this->_allProductIds)) {
if (!$this->isShuffled()) {
return parent::getAllIds();
}
$ids = parent::getAllIds();
$ids = new Varien_Object(array('items' => array_flip($ids)));
/**
* Updating collection with desired items
*/
Mage::dispatchEvent('catalog_product_upsell', array('product' => $this->getProduct(), 'collection' => $ids, 'limit' => null));
$this->_allProductIds = array_keys($ids->getItems());
shuffle($this->_allProductIds);
}
return $this->_allProductIds;
}
