Changes to OpenCart payment's controller inline with WorldPay updates

If you use WorldPay to process your payments on your OpenCart shop you may have recently received emails from them about updates to their system.

For a client running OpenCart v. 1.5.1.3.1 I've just made the following changes to their WorldPay controller, so as to call to a different WorldPay URL.

In catalog/controller/payment/worldpay.php on around line 12

$this->data['action'] = 'https://select.worldpay.com/wcc/purchase';

became...

$this->data['action'] = 'https://secure.worldpay.com/wcc/purchase';

Meanwhile I've checked a client's site running OpenCart v.1.5.4.1 and the same area of code already looks like:

if (!$this->config->get('worldpay_test')){ $this->data['action'] = 'https://secure.worldpay.com/wcc/purchase'; }else{ $this->data['action'] = 'https://secure-test.worldpay.com/wcc/purchase'; }

Hope that helps anyone who missed the email and is wondering why their WorldPay payments have stopped working after the 30th May!