Unable to get Response Parameters in Notification and Success url SOFORT API - zend-framework

Question

public function sofyAction()
{
$args = [ 'config_key' => $this->getConfigKey() ];
$sofy = new Api($args);
$helper = $this->getServiceLocator()->get('ViewHelperManager')->get('ServerUrl');
$successUrl = $helper($this->url()->fromRoute('sofort_response'));
$params = [
'amount' => 1500,
'currency_code' => 'EUR',
'reason' => 'Vouhcer Order',
'success_url' => $successUrl,
'customer_protection' => false,
'notification_url' => 'MY_PRIVATE_RESPONSE_URL',
];
$trans = $sofy->createTransaction($params);
return $this->redirect()->toUrl($trans['payment_url']);
}
How to get response and transaction ID as given it API document in Notification URL and on success URL too , please unable to find any help or guide for it ?

Answer 1

The easiest way is to let Payum do notification related job for you. To do so you either:
have to create manually a notification token using Payum's token factory (I am not sure it is present in the Zend module, it is quite old). Use the token as notification_url. Nothing more. Sofort will send a request to that url and Payum does the rest.
Make sure the token factory is passed to a gateway object and later is injected to capture action object. Leave the notification_url field empty and Payum will generate a new one.
use your own url as notification one and add there all the info you need (as a query string). I wouldn't recommend it since you expose sensitive data and once could try to exploit it.

Answer 2

I solved it this way by appending ?trx=-TRANSACTION- with success and notification url and than in response i recieved Transaction id as parameter and later loaded TransactionData with that transactionId . Payum Token way wasn't working for me ! Obiously had to use its config key to create Payum/Sofort/Api isnstance,
REQUEST:
$args = [ 'config_key' => $sofortConfigKey ];
$sofortPay = new Api($args);
// ?trx=-TRANSACTION- will append transacion ID as response param !
$params = [
'amount' => $coupon['price'],
'currency_code' => $coupon['currency'],
'reason' => $coupon['description'],
'success_url' => $successUrl.'?trx=-TRANSACTION-',
'abort_url' => $abortUrl.'?trx=-TRANSACTION-',
'customer_protection' => false,
'notification_url' => '_URL_'.'?trx=-TRANSACTION-',
];
$transactionParams = $sofortPay->createTransaction($params);
return $this->redirect()->toUrl($transactionParams['payment_url']);
RESPONSE:
$args = [ 'config_key' => $configKey ];
$sofy = new Api( $args );
$transNumber = $this->getRequest()->getQuery('trx');
$fields = $sofy->getTransactionData($transNumber);
Took help from API document. Payum documentation is worst. SOFORT API DOC