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Since i required to get the count of the number of distinct products in the cart , i changed the helper class (since i do not know how to override it) as follows.
public function getCount(){
if (is_null($this->_itemCount)) {
$quoteId = Mage::getSingleton('checkout/session')->getQuoteId();
$this->_itemCount = Mage::getResourceModel('checkout/cart')->fetchItemsQty($quoteId);
}
return $this->_itemCount;
}
public function getItemCount()
{
if (is_null($this->_itemSummaryCount)) {
$quoteId = Mage::getSingleton('checkout/session')->getQuoteId();
$this->_itemSummaryCount = Mage::getResourceModel('checkout/cart')->fetchItemsSummaryQty($quoteId);
}
return $this->_itemSummaryCount;
}
And I added the fetchItemsQty function to the resource “Mage_Checkout_Model_Mysql4_Cart”
public function fetchItemsQty($quoteId){
$entityType = Mage::getSingleton('eav/config')->getEntityType('quote_item');
$qtyEntityTypeId = $entityType->getEntityTypeId();
$attribute = Mage::getSingleton('eav/config')->getAttribute($qtyEntityTypeId, 'qty');
$qtyAttributeId = $attribute->getAttributeId();
$qtyAttributeTable = $this->getMainTable().'_'.$attribute->getBackendType();
$read = $this->getConnection('read');
$select = $read->select()
->from(array('qty'=>$qtyAttributeTable), 'count(*)')
->join(array('e'=>$this->getMainTable()), 'e.entity_id=qty.entity_id', array())
->where('e.parent_id=?', $quoteId)
->where('qty.entity_type_id=?', $qtyEntityTypeId)
->where('qty.attribute_id=?', $qtyAttributeId);
$qty = $read->fetchOne($select);
return $qty;
}
Perhaps it is possible that these modifications can be implemented in the core codebase? Or is this not necessary and does an easey way to obtain the above already exist?
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