How to get transaction id of an order in magento 2?

Question

How to get transaction id of order in Magento 2?

Answer 1

Edit:

Try to inject Magento\Sales\Api\Data\TransactionSearchResultInterfaceFactory into your constructor:

protected $transactions;

public function __constructor(
  \Magento\Sales\Api\Data\TransactionSearchResultInterfaceFactory $transactions,
  ......
)
{
  $this->transactions = $transactions;
}

In your method:

$transactions = $this->transactions->create()->addOrderIdFilter($orderId);
$transactions->getItems();

If Magento\Sales\Api\Data\TransactionSearchResultInterfaceFactory doesn't work, try to use \Magento\Sales\Model\ResourceModel\Order\Payment\Transaction\CollectionFactory. I'm not test yet both of them.

Answer 2

This will work.

class MyClass
{
    /**
     * @var \Magento\Sales\Api\TransactionRepositoryInterface
     */
    private $repository;

    /**
     * @var \Magento\Framework\Api\SearchCriteriaBuilder
     */
    private $searchCriteriaBuilder;

    /**
     * MyClass constructor.
     *
     * @param \Magento\Sales\Api\TransactionRepositoryInterface $repository
     * @param \Magento\Framework\Api\SearchCriteriaBuilder      $searchCriteriaBuilder
     */
    public function __construct(
        \Magento\Sales\Api\TransactionRepositoryInterface $repository,
        \Magento\Framework\Api\SearchCriteriaBuilder $searchCriteriaBuilder
    ) {
        $this->repository            = $repository;
        $this->searchCriteriaBuilder = $searchCriteriaBuilder;
    }

    /**
     * @param int $id
     *
     * @return \Magento\Sales\Api\Data\TransactionInterface[]
     */
    public function getTransactionByOrderId($id)
    {
        $this->searchCriteriaBuilder->addFilter('order_id', $id);
        $list = $this->repository->getList(
            $this->searchCriteriaBuilder->create()
        );

        return $list->getItems();
    }
}

Answer 3

You can use \Magento\Sales\Api\Data\TransactionSearchResultInterface for transaction Id.

$transaction = $objectManager->create('\Magento\Sales\Api\Data\TransactionSearchResultInterfaceFactory')->create()->addOrderIdFilter($block->getOrderId())->getFirstItem();

$transactionId = $transaction->getData('txn_id');

The $transactionId is your required transaction Id.