/**
* Get current product ids
*
* @param Mage_Catalog_Model_Resource_Product_Link_Product_Collection $collection
* @param string $idFieldName
*
* @return array
*/
protected function _getProductIds($collection, $idFieldName)
{
if ($collection->getProduct() && $collection->getProduct()->getId()) {
return array($collection->getProduct()->getData($idFieldName));
}
$ids = array();
$product = Mage::registry('product');
if ($product instanceof Mage_Catalog_Model_Product) {
$ids[] = $product->getData($idFieldName);
}
if ($collection->getLinkModel()->getLinkTypeId() == Mage_Catalog_Model_Product_Link::LINK_TYPE_CROSSSELL) {
$quote = Mage::getSingleton('checkout/session')->getQuote();
foreach ($quote->getAllItems() as $item) {
if ($product = $item->getProduct()) {
$ids[] = $product->getData($idFieldName);
}
}
}
return $ids;
}
