Credit Card errors not showing

[chronicent]

I have added a payment gateway for my zen cart. the problem is that once i complete the final step (step 3) to confirm the order, it just returns to the step 2 rather than displaying a error message or success message. but in the address bar it shows the error

index.php?main_page=checkout_payment&error_message=There+has+been+an+error+proce ssing+your+credit+card.+Please+try+again.

how do i get it to show in the checkout page ??

[DrByte]

Depends which payment module addon you're using. Many are using the older method of showing long error messages via the URL, which can be problematic since it may make it look like hacker activity. The newer correct approach is to pass such messages via the $messageStack, which means you'll have to change the code to have it do that.

[chronicent]

i am using the Voice Commerce gateway. can u explain roughly how can i do it through the $messagestack?
do i have to edit the given module files or the zen cart core file??

[DrByte]

You'd have to edit the 3rd-party module's code. I can't tell you exactly what line, because I've never heard of the module you're referring to, and it's not available in our contributed addons area.

Chances are you'll find a line like the following in both the confirmation() and before_process() methods of the class:

      zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, $payment_error_return, 'SSL', true, false));

There may be LOTS of other zen_redirect calls in the file, and they should not be touched, so do exercise caution when editing.

The use of $payment_error_return as a variable containing a parameter such as 'error_message=xxxxxxxxxxxxxxxxxxxxxxxxx' is the problem. In those cases, that line should be replaced with 3 lines:

      global $messageStack;
      $messageStack->add_session('checkout_payment', $error, 'error');
      zen_redirect(zen_href_link(FILENAME_CHECKOUT_PAYMENT, '', 'SSL', true, false));

The variable $payment_error_return may be different in your module ... it all depends on what the author of the module chose to use for her variable names.