I am suppose to:

  1. Load extension attribute when an order is loaded using the OrderRepositoryInterface.

  2. Implement functionality to save extension attribute data when an order is saved using the OrderRepositoryInterface.

I am confused with how to do this. How do I do this the right way?

  • 1
    For proper answer, please clarify what are you mean under first question. I think you can use entity repository or load method for load related entity Jun 5, 2022 at 2:56

1 Answer 1


For partial save order attribute(s) I suggest to use following logic


namespace Acme\StackExchange\Plugin\Sales\Api;

use Magento\Sales\Api\Data\OrderInterface;
use Magento\Sales\Api\OrderManagementInterface;
use Magento\Sales\Model\ResourceModel\Order as OrderResource;

class OrderManagementInterfacePlugin
     * @var OrderResource
    protected $orderResource;

    public function __construct(
        OrderResource $orderResource
    ) {
        $this->orderResource = $orderResource;

    public function afterPlace(
        OrderManagementInterface $subject,
        OrderInterface $result,
        OrderInterface $order
    ): OrderInterface {
        $order->setData('some_attribute', 'value');
        $this->orderResource->saveAttribute($order, 'some_attribute');

        return $result;

You can use array for list of attributes in saveAttribute method

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