Magento 2.3.3 Admin shows thousands of cart items for customers inflammation shopping cart tab

I am facing this issue in the backend admin, in the customer Information, & Shopping Cart tab. It looks like the getQuote() function returns all cart items if no active quote is found for customer id.

Screenshot :

Please follow the below steps to fix this issue :=>

Please create the following extension with a plugin

1) Vendor/Module/etc/adminhtml/di.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <preference for="Magento\Customer\Block\Adminhtml\Edit\Tab\Cart" type="Vendor\Module\Rewrite\Customer\Block\Adminhtml\Edit\Tab\Cart"/>
    <type name="Magento\Sales\Block\Adminhtml\ShoppingCartsTab">
        <plugin sortOrder="1" name="FixShoppingCartsTab"
                type="Vendor\Module\Plugin\Block\SalesShoppingCartsTab"/>
    </type>
</config>

<?xml version="1.0"?>

<plugin sortOrder="1" name="FixShoppingCartsTab"

type="Vendor\Module\Plugin\Block\SalesShoppingCartsTab"/>

</type>

</config>

2)Vendor/Module/Rewrite/Customer/Block/Adminhtml/Edit/Tab/Cart.php

<?php
namespace Vendor\Module\Rewrite\Customer\Block\Adminhtml\Edit\Tab;

use Magento\Backend\Block\Widget\Grid\Extended;
use Magento\Framework\Exception\NoSuchEntityException;

class Cart extends \Magento\Customer\Block\Adminhtml\Edit\Tab\Cart
{
    /**
     * Added fix when customer do not have any active quote
     * Magento 2 issue: https://github.com/magento/magento2/issues/26437
     * Pull request: https://github.com/magento/magento2/pull/26489
     */
    protected function _prepareCollection()
    {
        $quote = $this->getQuote();

        if ($quote && $quote->getId()) {
            $collection = $quote->getItemsCollection(false);
            $collection->addFieldToFilter('parent_item_id', ['null' => true]);
        } else {
            $collection = $this->_dataCollectionFactory->create();
        }

        $this->setCollection($collection);

        return Extended::_prepareCollection();
    }

    protected function getQuote()
    {
        if (null === $this->quote) {
            $customerId = $this->getCustomerId();
            $storeIds = $this->_storeManager->getWebsite($this->getWebsiteId())->getStoreIds();

            try {
                $this->quote = $this->quoteFactory->create()->setSharedStoreIds($storeIds)->loadByCustomer($customerId);
            } catch (NoSuchEntityException $e) {
                $this->quote = $this->quoteFactory->create()->setSharedStoreIds($storeIds);
            }
        }
        return $this->quote;
    }
}

<?php

namespace Vendor\Module\Rewrite\Customer\Block\Adminhtml\Edit\Tab;

use Magento\Backend\Block\Widget\Grid\Extended;

use Magento\Framework\Exception\NoSuchEntityException;

class Cart extends \Magento\Customer\Block\Adminhtml\Edit\Tab\Cart

{

/**

* Added fix when customer do not have any active quote

* Magento 2 issue: https://github.com/magento/magento2/issues/26437

* Pull request: https://github.com/magento/magento2/pull/26489

protected function _prepareCollection()

{

$quote = $this->getQuote();

if ($quote && $quote->getId()) {

$collection = $quote->getItemsCollection(false);

$collection->addFieldToFilter('parent_item_id', ['null' => true]);

} else {

$collection = $this->_dataCollectionFactory->create();

}

$this->setCollection($collection);

return Extended::_prepareCollection();

}

protected function getQuote()

{

if (null === $this->quote) {

$customerId = $this->getCustomerId();

$storeIds = $this->_storeManager->getWebsite($this->getWebsiteId())->getStoreIds();

try {

$this->quote = $this->quoteFactory->create()->setSharedStoreIds($storeIds)->loadByCustomer($customerId);

} catch (NoSuchEntityException $e) {

$this->quote = $this->quoteFactory->create()->setSharedStoreIds($storeIds);

}

return $this->quote;

}

3) Vendor/Module/Plugin/Block/SalesShoppingCartsTab.php

<?php
namespace Vendor\Module\Plugin\Block;

use Magento\Sales\Block\Adminhtml\ShoppingCartsTab;

class SalesShoppingCartsTab
{
    public function afterGetTabUrl(ShoppingCartsTab $subject, $result)
    {
        return $subject->getUrl('customer/*/carts', ['_current' => true]);
    }
}

<?php

namespace Vendor\Module\Plugin\Block;

use Magento\Sales\Block\Adminhtml\ShoppingCartsTab;

class SalesShoppingCartsTab

{

public function afterGetTabUrl(ShoppingCartsTab $subject, $result)

{

return $subject->getUrl('customer/*/carts', ['_current' => true]);

}

That’s it! You are done.

Note: This will only work for Magento 2.3.3 and higher.

Please share your thoughts if this article helpful to you.

Thanks.

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