AccountController.php

<?php

require_once 'Mage/Customer/controllers/AccountController.php';

class Elbert_Sample_Customer_AccountController extends Mage_Customer_AccountController
{
    public function createPostAction()
    {
        $session = $this->_getSession();
        if ($session->isLoggedIn()) {
            $this->_redirect('*/*/');
            return;
        }
        $session->setEscapeMessages(true); // prevent XSS injection in user input
        if ($this->getRequest()->isPost()) {

            $errors = array();

            if (!$customer = Mage::registry('current_customer')) {
                $customer = Mage::getModel('customer/customer')->setId(null);
            }

            /* @var $customerForm Mage_Customer_Model_Form */
            $customerForm = Mage::getModel('customer/form');
            $customerForm->setFormCode('customer_account_create')
                ->setEntity($customer);

            $customerData = $customerForm->extractData($this->getRequest());

            if ($this->getRequest()->getParam('is_subscribed', false)) {
                $customer->setIsSubscribed(1);
            }

            /**
             * Initialize customer group id
             */
            $customer->getGroupId();

            if ($this->getRequest()->getPost('create_address')) {
                /* @var $address Mage_Customer_Model_Address */
                $address = Mage::getModel('customer/address');
                /* @var $addressForm Mage_Customer_Model_Form */
                $addressForm = Mage::getModel('customer/form');
                $addressForm->setFormCode('customer_register_address')
                    ->setEntity($address);

                $addressData    = $addressForm->extractData($this->getRequest(), 'address', false);
                $addressErrors  = $addressForm->validateData($addressData);

                if ($addressErrors === true) {
                    $address->setId(null)
                        ->setIsDefaultBilling($this->getRequest()->getParam('default_billing', false))
                        ->setIsDefaultShipping($this->getRequest()->getParam('default_shipping', false));
                    $addressForm->compactData($addressData);
                    $customer->addAddress($address);

                    $addressErrors = $address->validate();
                    if (is_array($addressErrors)) {
                        $errors = array_merge($errors, $addressErrors);
                    }
                } else {
                    $errors = array_merge($errors, $addressErrors);
                }

                // Tundra/Elbert -->
                if ($this->getRequest()->getPost('create_shipping_address')) {
                    $shippingAddress = Mage::getModel('customer/address');

                    $shippingAddressForm = Mage::getModel('customer/form');
                    $shippingAddressForm->setFormCode('customer_register_address')
                        ->setEntity($shippingAddress);

                    $shippingAddressData = array(
                        'firstname'  => $addressData['firstname'],
                        'lastname'   => $addressData['lastname'],
                        'company'    => $this->getRequest()->getPost('shipping_company'),
                        'street'     => $this->getRequest()->getPost('shipping_street'),
                        'city'       => $this->getRequest()->getPost('shipping_city'),
                        'country_id' => $this->getRequest()->getPost('shipping_country_id'),
                        'region'     => $this->getRequest()->getPost('shipping_region'),
                        'region_id'  => $this->getRequest()->getPost('shipping_region_id'),
                        'postcode'   => $this->getRequest()->getPost('shipping_postcode'),
                        'telephone'  => $this->getRequest()->getPost('shipping_telephone'),
                        'fax'        => $this->getRequest()->getPost('shipping_fax')
                        );

                    $shippingAddressErrors = $addressForm->validateData($shippingAddressData);

                    if ($shippingAddressErrors === true) {
                        $shippingAddress->setId(null)
                            ->setIsDefaultBilling($this->getRequest()->getParam('shipping_default_billing', false))
                            ->setIsDefaultShipping($this->getRequest()->getParam('shipping_default_shipping', false));

                        $shippingAddressForm->compactData($shippingAddressData);

                        $customer->addAddress($shippingAddress);

                        $shippingAddressErrors = $shippingAddress->validate();

                        if (is_array($shippingAddressErrors)) {
                            $errors = array_merge($errors, $shippingAddressErrors);
                        }
                    } else {
                        $errors = array_merge($errors, $shippingAddressErrors);
                    }
                }
                // <-- Tundra/Elbert
            }

            try {
                $customerErrors = $customerForm->validateData($customerData);
                if ($customerErrors !== true) {
                    $errors = array_merge($customerErrors, $errors);
                } else {
                    $customerForm->compactData($customerData);
                    $customer->setPassword($this->getRequest()->getPost('password'));
                    $customer->setConfirmation($this->getRequest()->getPost('confirmation'));
                    $customerErrors = $customer->validate();
                    if (is_array($customerErrors)) {
                        $errors = array_merge($customerErrors, $errors);
                    }
                }

                $validationResult = count($errors) == 0;

                if (true === $validationResult) {
                    $customer->save();

                    if ($customer->isConfirmationRequired()) {
                        $customer->sendNewAccountEmail('confirmation', $session->getBeforeAuthUrl());
                        $session->addSuccess($this->__('Account confirmation is required. Please, check your email for the confirmation link. To resend the confirmation email please <a href="%s">click here</a>.', Mage::helper('customer')->getEmailConfirmationUrl($customer->getEmail())));
                        $this->_redirectSuccess(Mage::getUrl('*/*/index', array('_secure'=>true)));
                        return;
                    } else {
                        $session->setCustomerAsLoggedIn($customer);
                        $url = $this->_welcomeCustomer($customer);
                        $this->_redirectSuccess($url);
                        return;
                    }
                } else {
                    $session->setCustomerFormData($this->getRequest()->getPost());
                    if (is_array($errors)) {
                        foreach ($errors as $errorMessage) {
                            $session->addError($errorMessage);
                        }
                    } else {
                        $session->addError($this->__('Invalid customer data'));
                    }
                }
            } catch (Mage_Core_Exception $e) {
                $session->setCustomerFormData($this->getRequest()->getPost());
                if ($e->getCode() === Mage_Customer_Model_Customer::EXCEPTION_EMAIL_EXISTS) {
                    $url = Mage::getUrl('customer/account/forgotpassword');
                    $message = $this->__('There is already an account with this email address. If you are sure that it is your email address, <a href="%s">click here</a> to get your password and access your account.', $url);
                    $session->setEscapeMessages(false);
                } else {
                    $message = $e->getMessage();
                }
                $session->addError($message);
            } catch (Exception $e) {
                $session->setCustomerFormData($this->getRequest()->getPost())
                    ->addException($e, $this->__('Cannot save the customer.'));
            }
        }

        $this->_redirectError(Mage::getUrl('*/*/create', array('_secure' => true)));
    }