function generateRandomString($length = 11) {
        $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
        $charactersLength = strlen($characters);
        $randomString = '';
        for ($i = 0; $i < $length; $i++) {
            $randomString .= $characters[rand(0, $charactersLength - 1)];
        }
        return $randomString;
    }

    function doCustomOrder($data, $form) {
        $config = SiteConfig::current_site_config();
        $data['OrderID'] = $this->generateRandomString();

        $form->saveInto($enquiry = CustomOrder::create());
        $enquiry->Date = date('d-m-Y H:i:s');
        $enquiry->DateSubmitted = date('d-m-Y H:i:s');
        $enquiry->write();
        $this->CustomOrders()->add($enquiry);

        $From = $data['Email'];
        $To = "";
        $Subject = $config->Title." Custom Order";
        $email = new Email($From, $To, $Subject);
        $email->setTemplate('CustomOrderConfirmation');
        $email->populateTemplate($data);
        $email->send();
        $this->redirect("/sent");
    }