public function validateReviewForm(Customweb_Payment_ExternalCheckout_IContext $context, Customweb_Core_Http_IRequest $request)
{
if (!$context instanceof Customweb_SaferpayCw_Model_ExternalCheckoutContext) {
throw new Customweb_Core_Exception_CastException('Customweb_SaferpayCw_Model_ExternalCheckoutContext');
}
$this->redirectOnEmptyBasket();
$parameters = $request->getParameters();
$helper = Mage::helper('SaferpayCw');
$quote = $context->getQuote();
if ($context->hasBasketChanged($quote, $request)) {
$context->updateFromQuote($quote);
$context->save();
throw new Exception(Mage::helper('SaferpayCw')->__('The shopping cart has been altered!'));
}
if ($context->getShippingMethodName() == null) {
throw new Exception($helper->__('Please select a shipping method before sending the order.'));
}
$requiredAgreements = Mage::helper('checkout')->getRequiredAgreementIds();
if ($requiredAgreements) {
if (empty($parameters['agreement']) || !is_array($parameters['agreement'])) {
$parameters['agreement'] = array();
}
$postedAgreements = array_keys($parameters['agreement']);
$diff = array_diff($requiredAgreements, $postedAgreements);
if ($diff) {
throw new Exception($helper->__('Please agree to all the terms and conditions before placing the order.'));
}
}
}