totals items的数据流程

• MagentoQuoteModelCartTotalsItem(MagentoQuoteApiDataTotalsItemInterface)

• MagentoCheckoutModelDefaultConfigProvider::getConfig()

• MagentoCheckoutBlockOnepage::getCheckoutConfig()

• window.checkoutConfig.totalsData.items

• quote.totals().items (Magento_Checkout/js/model/quote as quote)

可用plugin修改Magento\Checkout\Model\DefaultConfigProvider::getConfig()来改变totals items

以下是为totals 中的product item添加brand属性的过程

etc/frontend/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"><type name="Magento\Checkout\Model\DefaultConfigProvider"><plugin name="infinity_checkout_model_defaultconfigprovider" type="Infinity\Checkout\Plugin\Magento\Checkout\Model\DefaultConfigProvider" /></type>
</config>

namespace Infinity\Checkout\Plugin\Magento\Checkout\Model;class DefaultConfigProvider
{protected $productRepository;public function __construct(\Magento\Catalog\Model\ProductRepository $productRepository) {$this->productRepository = $productRepository;}public function afterGetConfig(\Magento\Checkout\Model\DefaultConfigProvider $subject, $return) {if(!empty($return['totalsData']['items']) &&is_array($return['totalsData']['items']) &&!empty($return['quoteItemData']) &&is_array($return['quoteItemData'])) {$items = $return['totalsData']['items'];$quoteItemData = $return['quoteItemData'];$quoteItemData = array_column($quoteItemData, NULL, 'item_id');foreach($items as $key => $item) {$id = $quoteItemData[$item['item_id']]['product_id'];if($id) {$product = $this->productRepository->getById($id);$items[$key]['brand'] = $product->getAttributeText('general_brand');}}$return['totalsData']['items'] = $items;}return $return;}
}