我有一些产品只能销往特定地区。所以我添加了一个 javascript 弹出窗口，询问用户他们的运输邮政编码，然后我点击了一个网络服务来确认我可以把这个项目卖给他们。
此外，在购物车页面上，我要求提供运输邮政编码，以便计算正确的运费。
我想如果我已经在向用户询问他们的 zip，我会自动将其设置为 Add to Cart 并为他们提供适当的运费/方法。
我假设我可以简单地扩展购物车控制器的 addAction 来设置 zip 并收集费率，但似乎没有保存 zip，我也无法收集费率。
这是我正在使用的功能：
public function addAction()
{
$cart = $this->_getCart();
$params = $this->getRequest()->getParams();
try {
if (isset($params['qty'])) {
$filter = new Zend_Filter_LocalizedToNormalized(
array('locale' => Mage::app()->getLocale()->getLocaleCode())
);
$params['qty'] = $filter->filter($params['qty']);
}
$product = $this->_initProduct();
$related = $this->getRequest()->getParam('related_product');
/**
* Check product availability
*/
if (!$product) {
$this->_goBack();
return;
}
$cart->addProduct($product, $params);
if (!empty($related)) {
$cart->addProductsByIds(explode(',', $related));
}
if((isset($params['territory_value_submitted']) && !empty($params['territory_value_submitted']))) {
$shipping_address = $cart->getQuote()->getShippingAddress();
$billing_address = $cart->getQuote()->getBillingAddress();
Mage::log('Current Zip: '.$shipping_address->getPostcode());
Mage::log('New Zip: '.$params['territory_value_submitted']);
if($shipping_address->getPostcode() != $params['territory_value_submitted']) {
$region = '';
// use web service to lookup coresponding state for this zip code
$state_lookup_response = file_get_contents(WEB_SERVICE_URL.'?zip='.$params['territory_value_submitted'].'&field=state');
if($state_lookup_response != '') {
$region = $state_lookup_response;
}
$shipping_address
->setCountryId('')
->setCity('')
->setPostcode($params['territory_value_submitted'])
->setRegion($region)
->setRegionId('')
->setCollectShippingRates(true)
->save();
Mage::log('Set Zip: '.$shipping_address->getPostalcode());
$current_bill_zip = $billing_address->getPostcode();
if(empty($current_bill_zip)) {
$billing_address
->setCountryId('')
->setCity('')
->setPostcode($params['territory_value_submitted'])
->setRegion($region)
->setRegionId('')
->save();
}
$ship_method = $shipping_address->getShippingMethod();
if(empty($ship_method)) {
$shipping_address->collectShippingRates();
$rates = $shipping_address->getAllShippingRates();
Mage::log('Available Rate Count: '.count($rates));
//if a free shipping method exists, choose that as the default
if($this->_getQuote()->getShippingAddress()->getShippingRateByCode('productmatrix_Free_Shipping') !== false) {
$this->_getQuote()->getShippingAddress()->setShippingMethod('productmatrix_Free_Shipping');
}
//if a standard shipping method exists, choose that as the default
elseif($this->_getQuote()->getShippingAddress()->getShippingRateByCode('productmatrix_Standard_Delivery') !== false) {
$this->_getQuote()->getShippingAddress()->setShippingMethod('productmatrix_Standard_Delivery');
}
$shipping_address->save();
}
$cart->getQuote()->save();
}
}
$cart->save();
$this->_getSession()->setCartWasUpdated(true);
/**
* @todo remove wishlist observer processAddToCart
*/
Mage::dispatchEvent('checkout_cart_add_product_complete',
array('product' => $product, 'request' => $this->getRequest(), 'response' => $this->getResponse())
);
if (!$this->_getSession()->getNoCartRedirect(true)) {
if (!$cart->getQuote()->getHasError()){
$message = $this->__('%s was added to your shopping cart.', Mage::helper('core')->htmlEscape($product->getName()));
$this->_getSession()->addSuccess($message);
}
$this->_goBack();
}
} catch (Mage_Core_Exception $e) {
if ($this->_getSession()->getUseNotice(true)) {
$this->_getSession()->addNotice($e->getMessage());
} else {
$messages = array_unique(explode("\n", $e->getMessage()));
foreach ($messages as $message) {
$this->_getSession()->addError($message);
}
}
$url = $this->_getSession()->getRedirectUrl(true);
if ($url) {
$this->getResponse()->setRedirect($url);
} else {
$this->_redirectReferer(Mage::helper('checkout/cart')->getCartUrl());
}
} catch (Exception $e) {
$this->_getSession()->addException($e, $this->__('Cannot add the item to shopping cart.'));
Mage::logException($e);
$this->_goBack();
}
}
更奇怪的是，当我在同一个会话中多次运行该过程时，记录的内容会发生变化。
这是将相同产品添加到购物车 3 次的日志，始终使用以下邮政编码10001：
2012-04-04T19:58:20+00:00 DEBUG (7): Current Zip:
2012-04-04T19:58:20+00:00 DEBUG (7): New Zip: 10001
2012-04-04T19:58:20+00:00 DEBUG (7): Set Zip:
2012-04-04T19:58:20+00:00 DEBUG (7): Available Rate Count: 0
2012-04-04T19:58:36+00:00 DEBUG (7): Current Zip:
2012-04-04T19:58:36+00:00 DEBUG (7): New Zip: 10001
2012-04-04T19:58:36+00:00 DEBUG (7): Set Zip:
2012-04-04T19:58:36+00:00 DEBUG (7): Available Rate Count: 0
2012-04-04T19:59:00+00:00 DEBUG (7): Current Zip: 10001
2012-04-04T19:59:00+00:00 DEBUG (7): New Zip: 10001
请注意，Set Zip第二次添加中的 为空，但Current Zip第三次添加中的 不是。并且第三次添加不会尝试收集运费，因为新的 zip 与当前的 zip 相同。
有谁知道是什么阻止了数据被正确加载或保存？