Method canDisplayAddtocartAdvanced

/*
 * Used in checkout to check products when adding or updating cart
 */
public function canDisplayAddtocartAdvanced($item)
{
    if ($this->canDisplayAddtocart()) {
        if (isset($item->id) && (int) $item->id > 0) {
            if ($item->type == 3) {
                // PRODUCTTYPE - price on demand product cannot be added to cart
                // PhocacartLog::add(3, 'Warning', $item->id, 'Product could not be added to cart or ordered because its type (Product on demand) does not allow it' . ' ' . JText::_('COM_PHOCACART_PRODUCT'). ': ' . $item->title );
                return false;
            } else {
                return true;
            }
        }
    }
    return false;
}