Shopware订单对象中获取产品自定义字段的正确方法

use Shopware\Core\Framework\Context;
use Shopware\Core\Framework\DataAbstractionLayer\Search\Criteria;
use Shopware\Core\Framework\DataAbstractionLayer\Search\Filter\EqualsFilter;
use Shopware\Core\System\SalesChannel\Repository\SalesChannelRepositoryInterface; // 假设通过销售渠道仓库获取订单

// ... 在一个服务或控制器中 ...

public function getOrderWithProductCustomFields(string $orderId): ?OrderEntity
{
    $criteria = new Criteria();
    $criteria->addFilter(new EqualsFilter('id', $orderId));
    $criteria->addAssociations([
        'deliveries.shippingOrderAddress.salutation',
        'deliveries.shippingOrderAddress.country',
        'orderCustomer.customer.group',
        'lineItems.product.translations', // 初始尝试，关联产品翻译
    ]);

    // 假设通过 orderRepository 注入
    $orderObject = $this->orderRepository->search($criteria, Context::createDefaultContext())->first();

    if ($orderObject) {
        $firstLineItem = $orderObject->getLineItems()->first();
        if ($firstLineItem && $firstLineItem->getProduct()) {
            // 尝试获取自定义字段，此时可能为空
            $customFields = $firstLineItem->getProduct()->getCustomFields();
            // 尝试访问产品翻译，会报错：Attempted to call an undefined method named "getProductTranslations"
            // $firstLineItem->getProduct()->getProductTranslations();
        }
    }
    return $orderObject;
}

use Shopware\Core\Framework\Context;
use Shopware\Core\Framework\DataAbstractionLayer\Search\Criteria;
use Shopware\Core\Framework\DataAbstractionLayer\Search\Filter\EqualsFilter;
use Shopware\Core\Checkout\Order\OrderEntity; // 引入OrderEntity
use Shopware\Core\Framework\DataAbstractionLayer\EntityRepository; // 引入EntityRepository

// ... 在一个服务或控制器中 ...
class OrderService
{
    private EntityRepository $orderRepository;

    public function __construct(EntityRepository $orderRepository)
    {
        $this->orderRepository = $orderRepository;
    }

    public function getOrderWithProductCustomFields(string $orderId): ?OrderEntity
    {
        $criteria = new Criteria();
        $criteria->addFilter(new EqualsFilter('id', $orderId));
        $criteria->addAssociations([
            'deliveries.shippingOrderAddress.salutation',
            'deliveries.shippingOrderAddress.country',
            'orderCustomer.customer.group',
            'lineItems.product.default', // 关键修改：关联产品默认数据
        ]);

        $orderObject = $this->orderRepository->search($criteria, Context::createDefaultContext())->first();

        if ($orderObject) {
            $firstLineItem = $orderObject->getLineItems()->first();
            if ($firstLineItem && $firstLineItem->getProduct()) {
                // 现在可以正确获取自定义字段
                $customFields = $firstLineItem->getProduct()->getCustomFields();

                // 示例：访问特定自定义字段
                if ($customFields && isset($customFields['emakers_custom_field_warehouse_name'])) {
                    $warehouseName = $customFields['emakers_custom_field_warehouse_name'];
                    // ... 处理 $warehouseName ...
                }
                return $orderObject;
            }
        }
        return null;
    }
}