How is the «sales_order_payment_transaction_html_txn_id» event triggered and handled?

dmitry_fedyuk · August 19, 2016, 11:09pm

magento/magento2/blob/2.1.0/app/code/Magento/Sales/Model/Order/Payment/Transaction.php#L885-L894


/**
 * Get HTML format for transaction id
 *
 * @return string
 */
public function getHtmlTxnId()
{
    $this->_eventManager->dispatch($this->_eventPrefix . '_html_txn_id', $this->_getEventData());
    return isset($this->_data['html_txn_id']) ? $this->_data['html_txn_id'] : $this->getTxnId();
}

github.com

magento/magento2/blob/2.1.0/app/code/Magento/Paypal/etc/events.xml#L12-L14


<event name="sales_order_payment_transaction_html_txn_id">
    <observer name="paypal_transaction_html" instance="Magento\Paypal\Observer\HtmlTransactionIdObserver"/>
</event>

github.com

magento/magento2/blob/2.1.0/app/code/Magento/Paypal/Observer/HtmlTransactionIdObserver.php#L30-L46


/**
 * Update transaction with HTML representation of txn_id
 *
 * @param EventObserver $observer
 * @return void
 */
public function execute(EventObserver $observer)
{
    /** @var \Magento\Sales\Model\Order\Payment\Transaction $transaction */
    $transaction = $observer->getDataObject();
    $order = $transaction->getOrder();
    $payment = $order->getPayment();
    $methodInstance = $payment->getMethodInstance();
    $paymentCode = $methodInstance->getCode();
    $transactionLink = $this->paypalData->getHtmlTransactionId($paymentCode, $transaction->getTxnId());
    $transaction->setData('html_txn_id', $transactionLink);
}