我安装了自定义扩展程序。它运行成功，所有文件都在其位置。但我在我的列表页面上收到此错误
Fatal error: Call to a member function setFinalPrice() on a non-object in /var/zpanel/hostdata/zadmin/public_html/unisport_com/app/code/core/Mage/Sales/Model/Quote/Item/Abstract.php on line 89.
我谷歌这个错误，但没有找到任何适当的解决方案。一种解决方案是复制原始的Abstract.php文件可能是因为扩展已经覆盖了这个文件。但我从备份中检查了相同的代码并复制了原始文件，但没有任何对我有用。
这个档案有什么问题？有人可以帮忙吗？
下面是Abstract.php文件的代码：
<?php
/**
* Magento
*
* NOTICE OF LICENSE
*
* This source file is subject to the Open Software License (OSL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/osl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@magentocommerce.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade Magento to newer
* versions in the future. If you wish to customize Magento for your
* needs please refer to http://www.magentocommerce.com for more information.
*
* @category Mage
* @package Mage_Sales
* @copyright Copyright (c) 2013 Magento Inc. (http://www.magentocommerce.com)
* @license http://opensource.org/licenses/osl-3.0.php Open Software License (OSL 3.0)
*/
/**
* Quote item abstract model
*
* Price attributes:
* - price - initial item price, declared during product association
* - original_price - product price before any calculations
* - calculation_price - prices for item totals calculation
* - custom_price - new price that can be declared by user and recalculated during calculation process
* - original_custom_price - original defined value of custom price without any convertion
*
* @category Mage
* @package Mage_Sales
* @author Magento Core Team <core@magentocommerce.com>
*/
abstract class Mage_Sales_Model_Quote_Item_Abstract extends Mage_Core_Model_Abstract
implements Mage_Catalog_Model_Product_Configuration_Item_Interface
{
/**
* Parent item for sub items for bundle product, configurable product, etc.
*
* @var Mage_Sales_Model_Quote_Item_Abstract
*/
protected $_parentItem = null;
/**
* Children items in bundle product, configurable product, etc.
*
* @var array
*/
protected $_children = array();
/**
*
* @var array
*/
protected $_messages = array();
/**
* Retrieve Quote instance
*
* @return Mage_Sales_Model_Quote
*/
abstract function getQuote();
/**
* Retrieve product model object associated with item
*
* @return Mage_Catalog_Model_Product
*/
public function getProduct()
{
$product = $this->_getData('product');
if ($product === null && $this->getProductId()) {
$product = Mage::getModel('catalog/product')
->setStoreId($this->getQuote()->getStoreId())
->load($this->getProductId());
$this->setProduct($product);
}
/**
* Reset product final price because it related to custom options
*/
$product->setFinalPrice(null);
if (is_array($this->_optionsByCode)) {
$product->setCustomOptions($this->_optionsByCode);
}
return $product;
}
/**
* Returns special download params (if needed) for custom option with type = 'file'
* Needed to implement Mage_Catalog_Model_Product_Configuration_Item_Interface.
* Return null, as quote item needs no additional configuration.
*
* @return null|Varien_Object
*/
public function getFileDownloadParams()
{
return null;
}
/**
* Specify parent item id before saving data
*
* @return Mage_Sales_Model_Quote_Item_Abstract
*/
protected function _beforeSave()
{
parent::_beforeSave();
if ($this->getParentItem()) {
$this->setParentItemId($this->getParentItem()->getId());
}
return $this;
}
/**
* Set parent item
*
* @param Mage_Sales_Model_Quote_Item $parentItem
* @return Mage_Sales_Model_Quote_Item
*/
public function setParentItem($parentItem)
{
if ($parentItem) {
$this->_parentItem = $parentItem;
$parentItem->addChild($this);
}
return $this;
}
/**
* Get parent item
*
* @return Mage_Sales_Model_Quote_Item
*/
public function getParentItem()
{
return $this->_parentItem;
}
/**
* Get chil items
*
* @return array
*/
public function getChildren()
{
return $this->_children;
}
/**
* Add child item
*
* @param Mage_Sales_Model_Quote_Item_Abstract $child
* @return Mage_Sales_Model_Quote_Item_Abstract
*/
public function addChild($child)
{
$this->setHasChildren(true);
$this->_children[] = $child;
return $this;
}
/**
* Adds message(s) for quote item. Duplicated messages are not added.
*
* @param mixed $messages
* @return Mage_Sales_Model_Quote_Item_Abstract
*/
public function setMessage($messages)
{
$messagesExists = $this->getMessage(false);
if (!is_array($messages)) {
$messages = array($messages);
}
foreach ($messages as $message) {
if (!in_array($message, $messagesExists)) {
$this->addMessage($message);
}
}
return $this;
}
/**
* Add message of quote item to array of messages
*
* @param string $message
* @return Mage_Sales_Model_Quote_Item_Abstract
*/
public function addMessage($message)
{
$this->_messages[] = $message;
return $this;
}
/**
* Get messages array of quote item
*
* @param bool $string flag for converting messages to string
* @return array|string
*/
public function getMessage($string = true)
{
if ($string) {
return join("\n", $this->_messages);
}
return $this->_messages;
}
/**
* Removes message by text
*
* @param string $text
* @return Mage_Sales_Model_Quote_Item_Abstract
*/
public function removeMessageByText($text)
{
foreach ($this->_messages as $key => $message) {
if ($message == $text) {
unset($this->_messages[$key]);
}
}
return $this;
}
/**
* Clears all messages
*
* @return Mage_Sales_Model_Quote_Item_Abstract
*/
public function clearMessage()
{
$this->unsMessage(); // For older compatibility, when we kept message inside data array
$this->_messages = array();
return $this;
}
/**
* Retrieve store model object
*
* @return Mage_Core_Model_Store
*/
public function getStore()
{
return $this->getQuote()->getStore();
}
/**
* Checking item data
*
* @return Mage_Sales_Model_Quote_Item_Abstract
*/
public function checkData()
{
$this->setHasError(false);
$this->clearMessage();
$qty = $this->_getData('qty');
try {
$this->setQty($qty);
} catch (Mage_Core_Exception $e) {
$this->setHasError(true);
$this->setMessage($e->getMessage());
} catch (Exception $e) {
$this->setHasError(true);
$this->setMessage(Mage::helper('sales')->__('Item qty declaration error.'));
}
try {
$this->getProduct()->getTypeInstance(true)->checkProductBuyState($this->getProduct());
} catch (Mage_Core_Exception $e) {
$this->setHasError(true)
->setMessage($e->getMessage());
$this->getQuote()->setHasError(true)
->addMessage(Mage::helper('sales')->__('Some of the products below do not have all the required options.'));
} catch (Exception $e) {
$this->setHasError(true)
->setMessage(Mage::helper('sales')->__('Item options declaration error.'));
$this->getQuote()->setHasError(true)
->addMessage(Mage::helper('sales')->__('Items options declaration error.'));
}
if ($this->getProduct()->getHasError()) {
$this->setHasError(true)
->setMessage(Mage::helper('sales')->__('Some of the selected options are not currently available.'));
$this->getQuote()->setHasError(true)
->addMessage($this->getProduct()->getMessage(), 'options');
}
if ($this->getHasConfigurationUnavailableError()) {
$this->setHasError(true)
->setMessage(Mage::helper('sales')->__('Selected option(s) or their combination is not currently available.'));
$this->getQuote()->setHasError(true)
->addMessage(Mage::helper('sales')->__('Some item options or their combination are not currently available.'), 'unavailable-configuration');
$this->unsHasConfigurationUnavailableError();
}
return $this;
}
/**
* Get original (not related with parent item) item quantity
*
* @return int|float
*/
public function getQty()
{
return $this->_getData('qty');
}
/**
* Get total item quantity (include parent item relation)
*
* @return int|float
*/
public function getTotalQty()
{
if ($this->getParentItem()) {
return $this->getQty()*$this->getParentItem()->getQty();
}
return $this->getQty();
}
/**
* Calculate item row total price
*
* @return Mage_Sales_Model_Quote_Item
*/
public function calcRowTotal()
{
$qty = $this->getTotalQty();
// Round unit price before multiplying to prevent losing 1 cent on subtotal
$total = $this->getStore()->roundPrice($this->getCalculationPriceOriginal()) * $qty;
$baseTotal = $this->getStore()->roundPrice($this->getBaseCalculationPriceOriginal()) * $qty;
$this->setRowTotal($this->getStore()->roundPrice($total));
$this->setBaseRowTotal($this->getStore()->roundPrice($baseTotal));
return $this;
}
/**
* Get item price used for quote calculation process.
* This method get custom price (if it is defined) or original product final price
*
* @return float
*/
public function getCalculationPrice()
{
$price = $this->_getData('calculation_price');
if (is_null($price)) {
if ($this->hasCustomPrice()) {
$price = $this->getCustomPrice();
} else {
$price = $this->getConvertedPrice();
}
$this->setData('calculation_price', $price);
}
return $price;
}
/**
* Get item price used for quote calculation process.
* This method get original custom price applied before tax calculation
*
* @return float
*/
public function getCalculationPriceOriginal()
{
$price = $this->_getData('calculation_price');
if (is_null($price)) {
if ($this->hasOriginalCustomPrice()) {
$price = $this->getOriginalCustomPrice();
} else {
$price = $this->getConvertedPrice();
}
$this->setData('calculation_price', $price);
}
return $price;
}
/**
* Get calculation price used for quote calculation in base currency.
*
* @return float
*/
public function getBaseCalculationPrice()
{
if (!$this->hasBaseCalculationPrice()) {
if ($this->hasCustomPrice()) {
$price = (float) $this->getCustomPrice();
if ($price) {
$rate = $this->getStore()->convertPrice($price) / $price;
$price = $price / $rate;
}
} else {
$price = $this->getPrice();
}
$this->setBaseCalculationPrice($price);
}
return $this->_getData('base_calculation_price');
}
/**
* Get original calculation price used for quote calculation in base currency.
*
* @return float
*/
public function getBaseCalculationPriceOriginal()
{
if (!$this->hasBaseCalculationPrice()) {
if ($this->hasOriginalCustomPrice()) {
$price = (float) $this->getOriginalCustomPrice();
if ($price) {
$rate = $this->getStore()->convertPrice($price) / $price;
$price = $price / $rate;
}
} else {
$price = $this->getPrice();
}
$this->setBaseCalculationPrice($price);
}
return $this->_getData('base_calculation_price');
}
/**
* Get whether the item is nominal
* TODO: fix for multishipping checkout
*
* @return bool
*/
public function isNominal()
{
if (!$this->hasData('is_nominal')) {
$this->setData('is_nominal', $this->getProduct() ? '1' == $this->getProduct()->getIsRecurring() : false);
}
return $this->_getData('is_nominal');
}
/**
* Data getter for 'is_nominal'
* Used for converting item to order item
*
* @return int
*/
public function getIsNominal()
{
return (int)$this->isNominal();
}
/**
* Get original price (retrieved from product) for item.
* Original price value is in quote selected currency
*
* @return float
*/
public function getOriginalPrice()
{
$price = $this->_getData('original_price');
if (is_null($price)) {
$price = $this->getStore()->convertPrice($this->getBaseOriginalPrice());
$this->setData('original_price', $price);
}
return $price;
}
/**
* Set original price to item (calculation price will be refreshed too)
*
* @param float $price
* @return Mage_Sales_Model_Quote_Item_Abstract
*/
public function setOriginalPrice($price)
{
return $this->setData('original_price', $price);
}
/**
* Get Original item price (got from product) in base website currency
*
* @return float
*/
public function getBaseOriginalPrice()
{
return $this->_getData('base_original_price');
}
/**
* Specify custom item price (used in case whe we have apply not product price to item)
*
* @param float $value
* @return Mage_Sales_Model_Quote_Item_Abstract
*/
public function setCustomPrice($value)
{
$this->setCalculationPrice($value);
$this->setBaseCalculationPrice(null);
return $this->setData('custom_price', $value);
}
/**
* Get item price. Item price currency is website base currency.
*
* @return decimal
*/
public function getPrice()
{
return $this->_getData('price');
}
/**
* Specify item price (base calculation price and converted price will be refreshed too)
*
* @param float $value
* @return Mage_Sales_Model_Quote_Item_Abstract
*/
public function setPrice($value)
{
$this->setBaseCalculationPrice(null);
$this->setConvertedPrice(null);
return $this->setData('price', $value);
}
/**
* Get item price converted to quote currency
* @return float
*/
public function getConvertedPrice()
{
$price = $this->_getData('converted_price');
if (is_null($price)) {
$price = $this->getStore()->convertPrice($this->getPrice());
$this->setData('converted_price', $price);
}
return $price;
}
/**
* Set new value for converted price
* @param float $value
* @return Mage_Sales_Model_Quote_Item_Abstract
*/
public function setConvertedPrice($value)
{
$this->setCalculationPrice(null);
$this->setData('converted_price', $value);
return $this;
}
/**
* Clone quote item
*
* @return Mage_Sales_Model_Quote_Item
*/
public function __clone()
{
$this->setId(null);
$this->_parentItem = null;
$this->_children = array();
$this->_messages = array();
return $this;
}
/**
* Checking if there children calculated or parent item
* when we have parent quote item and its children
*
* @return bool
*/
public function isChildrenCalculated()
{
if ($this->getParentItem()) {
$calculate = $this->getParentItem()->getProduct()->getPriceType();
} else {
$calculate = $this->getProduct()->getPriceType();
}
if ((null !== $calculate) && (int)$calculate === Mage_Catalog_Model_Product_Type_Abstract::CALCULATE_CHILD) {
return true;
}
return false;
}
/**
* Checking can we ship product separatelly (each child separately)
* or each parent product item can be shipped only like one item
*
* @return bool
*/
public function isShipSeparately()
{
if ($this->getParentItem()) {
$shipmentType = $this->getParentItem()->getProduct()->getShipmentType();
} else {
$shipmentType = $this->getProduct()->getShipmentType();
}
if ((null !== $shipmentType) &&
(int)$shipmentType === Mage_Catalog_Model_Product_Type_Abstract::SHIPMENT_SEPARATELY) {
return true;
}
return false;
}
/**
* Calculate item tax amount
*
* @deprecated logic moved to tax totals calculation model
* @return Mage_Sales_Model_Quote_Item
*/
public function calcTaxAmount()
{
$store = $this->getStore();
if (!Mage::helper('tax')->priceIncludesTax($store)) {
if (Mage::helper('tax')->applyTaxAfterDiscount($store)) {
$rowTotal = $this->getRowTotalWithDiscount();
$rowBaseTotal = $this->getBaseRowTotalWithDiscount();
} else {
$rowTotal = $this->getRowTotal();
$rowBaseTotal = $this->getBaseRowTotal();
}
$taxPercent = $this->getTaxPercent()/100;
$this->setTaxAmount($store->roundPrice($rowTotal * $taxPercent));
$this->setBaseTaxAmount($store->roundPrice($rowBaseTotal * $taxPercent));
$rowTotal = $this->getRowTotal();
$rowBaseTotal = $this->getBaseRowTotal();
$this->setTaxBeforeDiscount($store->roundPrice($rowTotal * $taxPercent));
$this->setBaseTaxBeforeDiscount($store->roundPrice($rowBaseTotal * $taxPercent));
} else {
if (Mage::helper('tax')->applyTaxAfterDiscount($store)) {
$totalBaseTax = $this->getBaseTaxAmount();
$totalTax = $this->getTaxAmount();
if ($totalTax && $totalBaseTax) {
$totalTax -= $this->getDiscountAmount() * ($this->getTaxPercent() / 100);
$totalBaseTax -= $this->getBaseDiscountAmount() * ($this->getTaxPercent() / 100);
$this->setBaseTaxAmount($store->roundPrice($totalBaseTax));
$this->setTaxAmount($store->roundPrice($totalTax));
}
}
}
if (Mage::helper('tax')->discountTax($store) && !Mage::helper('tax')->applyTaxAfterDiscount($store)) {
if ($this->getDiscountPercent()) {
$baseTaxAmount = $this->getBaseTaxBeforeDiscount();
$taxAmount = $this->getTaxBeforeDiscount();
$baseDiscountDisposition = $baseTaxAmount/100*$this->getDiscountPercent();
$discountDisposition = $taxAmount/100*$this->getDiscountPercent();
$this->setDiscountAmount($this->getDiscountAmount()+$discountDisposition);
$this->setBaseDiscountAmount($this->getBaseDiscountAmount()+$baseDiscountDisposition);
}
}
return $this;
}
/**
* Get item tax amount
*
* @deprecated
* @return decimal
*/
public function getTaxAmount()
{
return $this->_getData('tax_amount');
}
/**
* Get item base tax amount
*
* @deprecated
* @return decimal
*/
public function getBaseTaxAmount()
{
return $this->_getData('base_tax_amount');
}
/**
* Get item price (item price always exclude price)
*
* @deprecated
* @return decimal
*/
protected function _calculatePrice($value, $saveTaxes = true)
{
$store = $this->getQuote()->getStore();
if (Mage::helper('tax')->priceIncludesTax($store)) {
$bAddress = $this->getQuote()->getBillingAddress();
$sAddress = $this->getQuote()->getShippingAddress();
$address = $this->getAddress();
if ($address) {
switch ($address->getAddressType()) {
case Mage_Sales_Model_Quote_Address::TYPE_BILLING:
$bAddress = $address;
break;
case Mage_Sales_Model_Quote_Address::TYPE_SHIPPING:
$sAddress = $address;
break;
}
}
if ($this->getProduct()->getIsVirtual()) {
$sAddress = $bAddress;
}
$priceExcludingTax = Mage::helper('tax')->getPrice(
$this->getProduct()->setTaxPercent(null),
$value,
false,
$sAddress,
$bAddress,
$this->getQuote()->getCustomerTaxClassId(),
$store
);
$priceIncludingTax = Mage::helper('tax')->getPrice(
$this->getProduct()->setTaxPercent(null),
$value,
true,
$sAddress,
$bAddress,
$this->getQuote()->getCustomerTaxClassId(),
$store
);
if ($saveTaxes) {
$qty = $this->getQty();
if ($this->getParentItem()) {
$qty = $qty*$this->getParentItem()->getQty();
}
if (Mage::helper('tax')->displayCartPriceInclTax($store)) {
$rowTotal = $value*$qty;
$rowTotalExcTax = Mage::helper('tax')->getPrice(
$this->getProduct()->setTaxPercent(null),
$rowTotal,
false,
$sAddress,
$bAddress,
$this->getQuote()->getCustomerTaxClassId(),
$store
);
$rowTotalIncTax = Mage::helper('tax')->getPrice(
$this->getProduct()->setTaxPercent(null),
$rowTotal,
true,
$sAddress,
$bAddress,
$this->getQuote()->getCustomerTaxClassId(),
$store
);
$totalBaseTax = $rowTotalIncTax-$rowTotalExcTax;
$this->setRowTotalExcTax($rowTotalExcTax);
}
else {
$taxAmount = $priceIncludingTax - $priceExcludingTax;
$this->setTaxPercent($this->getProduct()->getTaxPercent());
$totalBaseTax = $taxAmount*$qty;
}
$totalTax = $this->getStore()->convertPrice($totalBaseTax);
$this->setTaxBeforeDiscount($totalTax);
$this->setBaseTaxBeforeDiscount($totalBaseTax);
$this->setTaxAmount($totalTax);
$this->setBaseTaxAmount($totalBaseTax);
}
$value = $priceExcludingTax;
}
return $value;
}
}