magento禁用扁平运输方式

Question

我们希望在购物车总额$ 90及以上免运费：如果在购买折扣后购物车总价值低于90美元，则免运费不适用且7.95美元的固定运费应适用。

我正在为magento实现自定义API，这反映了一旦页面在magento用户帐户中刷新。但是API（mycart.php）显示了旧的结果（显示'flatrate'而不是'free_shipping'超过$ 90）

我在购物车级别应用运费。

我的示例代码：

$quote = $this->_getQuote($cart_id, $store);

        try {
            if($sub_total >= 90){               
                $shipping_code = "freeshipping_freeshipping";               
                //$quote->getShippingAddress()->setFreeShipping(1);
                //$quote->save();
            }
            else {
                $shipping_code = "flatrate_flatrate";               
            }   

            if ($quote->getShippingAddress()->getCountryId() == '') {               
                $quote->getShippingAddress()->setCountryId($this->_country);
            }                   

            $address = $quote->getShippingAddress();

            $address->setShippingMethod($shipping_code)->setCollectShippingRates(true);
            $address->save();

Answer 1

Disable To set up flat rate shipping navigate to 
System -> Configuration and click on Shipping Methods 
in the left column. 

Answer 2

我已使用以下代码段解决了问题：

$quote->collectTotals();    
$quote->save();