Magento 第一次付款后，我无法在购物车中添加产品

我有一个magento商店，所有这些都认为运行良好，第一次添加到购物车运行良好，成功结帐和付款完成。当我想在我的购物车中添加另一个产品时，我无法在我的购物车中添加任何产品，在注销并再次登录后，其工作正常，但在付款完成后，我无法在购物车中添加产品。我搜索了很多，但是没有成功。请帮我把这个问题简短地说出来。我正在使用magento 1.8.0.0

错误消息：

a:5:{i:0;s:313:"SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`intercon_2Einter`.`sales_flat_quote_item`, CONSTRAINT `FK_SALES_FLAT_QUOTE_ITEM_QUOTE_ID_SALES_FLAT_QUOTE_ENTITY_ID` FOREIGN KEY (`quote_id`) REFERENCES `sales_flat_quote` (`entity_id`) ON DE)";i:1;s:4159:"#0 /home/intercon/domains/dekabelexpert.nl/public_html/lib/Varien/Db/Statement/Pdo/Mysql.php(110): Zend_Db_Statement_Pdo->_execute(Array)
#1 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Zend/Db/Statement.php(291): Varien_Db_Statement_Pdo_Mysql->_execute(Array)
#2 /home/intercon/domains/dekabelexpert.nl/public_html/lib/Zend/Db/Adapter/Abstract.php(479): Zend_Db_Statement->execute(Array)
#3 /home/intercon/domains/dekabelexpert.nl/public_html/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('INSERT INTO `sa...', Array)
#4 /home/intercon/domains/dekabelexpert.nl/public_html/lib/Varien/Db/Adapter/Pdo/Mysql.php(428): Zend_Db_Adapter_Pdo_Abstract->query('INSERT INTO `sa...', Array)
#5 /home/intercon/domains/dekabelexpert.nl/public_html/lib/Zend/Db/Adapter/Abstract.php(574): Varien_Db_Adapter_Pdo_Mysql->query('INSERT INTO `sa...', Array)
#6 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Mage/Core/Model/Resource/Db/Abstract.php(453): Zend_Db_Adapter_Abstract->insert('sales_flat_quot...', Array)
#7 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Mage/Core/Model/Abstract.php(318): Mage_Core_Model_Resource_Db_Abstract->save(Object(Mage_Sales_Model_Quote_Item))
#8 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Mage/Sales/Model/Quote/Item.php(735): Mage_Core_Model_Abstract->save()
#9 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/local/Ajax/ProductAdjust/Model/Observer.php(92): Mage_Sales_Model_Quote_Item->save()
#10 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Mage/Core/Model/App.php(1338): Ajax_ProductAdjust_Model_Observer->updatePrice(Object(Varien_Event_Observer))
#11 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Mage/Core/Model/App.php(1317): Mage_Core_Model_App->_callObserverMethod(Object(Ajax_ProductAdjust_Model_Observer), 'updatePrice', Object(Varien_Event_Observer))
#12 /home/intercon/domains/dekabelexpert.nl/public_html/app/Mage.php(447): Mage_Core_Model_App->dispatchEvent('sales_quote_add...', Array)
#13 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Mage/Sales/Model/Quote.php(942): Mage::dispatchEvent('sales_quote_add...', Array)
#14 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Mage/Sales/Model/Quote.php(1083): Mage_Sales_Model_Quote->addItem(Object(Mage_Sales_Model_Quote_Item))
#15 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Mage/Sales/Model/Quote.php(992): Mage_Sales_Model_Quote->_addCatalogProduct(Object(Mage_Catalog_Model_Product), '1')
#16 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Mage/Sales/Model/Quote.php(1046): Mage_Sales_Model_Quote->addProductAdvanced(Object(Mage_Catalog_Model_Product), Object(Varien_Object), 'full')
#17 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Mage/Checkout/Model/Cart.php(265): Mage_Sales_Model_Quote->addProduct(Object(Mage_Catalog_Model_Product), Object(Varien_Object))
#18 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/local/Softprodigy/Multipleaddtocart/controllers/AddController.php(89): Mage_Checkout_Model_Cart->addProduct(Object(Mage_Catalog_Model_Product), Array)
#19 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Softprodigy_Multipleaddtocart_AddController->checksingleAction()
#20 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('checksingle')
#21 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#22 /home/intercon/domains/dekabelexpert.nl/public_html/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#23 /home/intercon/domains/dekabelexpert.nl/public_html/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#24 /home/intercon/domains/dekabelexpert.nl/public_html/index.php(87): Mage::run('', 'store')
#25

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我也有同样的问题：

• 付款后在购物车中插入产品会导致上述SQL错误
• 在空购物车中插入一个产品会导致“空购物车”，即使添加另一个产品会导致购物车同时设置了两个项目

我把范围缩小到了我在

销售

上的一个观察者。在这个观察者中，我修改了QuoteItem（设置价格和添加选项），然后保存了它。我认为是储蓄造成了问题

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我在事件之后将逻辑移到了

sales\u quote\u save\u，两个错误都消失了。希望有帮助。
我在使用
sales\u quote\u add\u item
event observer时遇到了这个问题。我试图在将产品添加到购物车时以编程方式编辑产品价格

我在Observer类中保存报价项

后来，我发现我们不需要保存QuoteItem对象，因为它在以后通过引用传递时会自动保存

因此，解决方案是删除/注释行：

// $quoteItem->save();

这似乎与编程无关。应将其移至。
// $quoteItem->save();