我使用ajax在我的bigcommerce网站上添加星期六送货附加费。基本上，我在点击星期六交货日期时将附加费作为另一种产品添加：
$.ajax({type:"GET", url:"http://www.url.com/cart.php?action=add&product_id=138", success: function(text)
我们注意到的问题是此方法将整个订单的交货日期更改为当前日期。产品本身没有自己的交货日期。
我试图通过添加＆＃34; delivery_date＆＃34;来解决这个问题。和＆＃34; deliveryDate＆＃34; （从xml产品导出）到ajax调用，但它没有产生任何结果。
这是一个示例订单导出：
<orders>
<order>
<Order_ID><![CDATA[358]]></Order_ID>
<Customer_ID><![CDATA[0]]></Customer_ID>
<Customer_Name><![CDATA[]]></Customer_Name>
<Customer_Email><![CDATA[]]></Customer_Email>
<Customer_Phone><![CDATA[]]></Customer_Phone>
<Order_Date><![CDATA[11/05/2016]]></Order_Date>
<Order_Status><![CDATA[Awaiting Payment]]></Order_Status>
<Subtotal_inc_tax><![CDATA[140.00]]></Subtotal_inc_tax>
<Subtotal_ex_tax><![CDATA[140.00]]></Subtotal_ex_tax>
<Tax_Total><![CDATA[0.00]]></Tax_Total>
<Shipping_Cost_inc_tax><![CDATA[0.00]]></Shipping_Cost_inc_tax>
<Shipping_Cost_ex_tax><![CDATA[0.00]]></Shipping_Cost_ex_tax>
<Ship_Method><![CDATA[Free Shipping]]></Ship_Method>
<Handling_Cost_inc_tax><![CDATA[0.0000]]></Handling_Cost_inc_tax>
<Handling_Cost_ex_tax><![CDATA[0.0000]]></Handling_Cost_ex_tax>
<Order_Total_inc_tax><![CDATA[140.00]]></Order_Total_inc_tax>
<Order_Total_ex_tax><![CDATA[140.00]]></Order_Total_ex_tax>
<Payment_Method><![CDATA[Pay in Store]]></Payment_Method>
<Total_Quantity><![CDATA[2]]></Total_Quantity>
<Total_Shipped><![CDATA[0]]></Total_Shipped>
<Date_Shipped><![CDATA[]]></Date_Shipped>
<Order_Currency_Code><![CDATA[USD]]></Order_Currency_Code>
<Exchange_Rate><![CDATA[1.0000000000]]></Exchange_Rate>
<Order_Notes><![CDATA[]]></Order_Notes>
<Customer_Message><![CDATA[]]></Customer_Message>
<Billing_First_Name><![CDATA[f]]></Billing_First_Name>
<Billing_Last_Name><![CDATA[f]]></Billing_Last_Name>
<Billing_Company><![CDATA[ Traveler]]></Billing_Company>
<Billing_Street_1><![CDATA[That Road]]></Billing_Street_1>
<Billing_Street_2><![CDATA[That Road]]></Billing_Street_2>
<Billing_Suburb><![CDATA[San Fran]]></Billing_Suburb>
<Billing_State><![CDATA[CA]]></Billing_State>
<Billing_Zip><![CDATA[1234567]]></Billing_Zip>
<Billing_Country><![CDATA[United States]]></Billing_Country>
<Billing_Phone><![CDATA[thah]]></Billing_Phone>
<Billing_Email><![CDATA[test@gmail.com]]></Billing_Email>
<Shipping_First_Name><![CDATA[d]]></Shipping_First_Name>
<Shipping_Last_Name><![CDATA[d]]></Shipping_Last_Name>
<Shipping_Company><![CDATA[Company]]></Shipping_Company>
<Shipping_Street_1><![CDATA[That Road]]></Shipping_Street_1>
<Shipping_Street_2><![CDATA[That Road]]></Shipping_Street_2>
<Shipping_Suburb><![CDATA[San Frab]]></Shipping_Suburb>
<Shipping_State><![CDATA[CA]]></Shipping_State>
<Shipping_Zip><![CDATA[1234567]]></Shipping_Zip>
<Shipping_Country><![CDATA[United States]]></Shipping_Country>
<Shipping_Phone><![CDATA[]]></Shipping_Phone>
<Shipping_Email><![CDATA[]]></Shipping_Email>
<Product_Details>
<item>
<Product_ID><![CDATA[86]]></Product_ID>
<Product_Qty><![CDATA[1]]></Product_Qty>
<Product_SKU><![CDATA[]]></Product_SKU>
<Product_Name><![CDATA[Lobster, Whole - Select]]></Product_Name>
<Product_Weight><![CDATA[1.0000]]></Product_Weight>
<Product_Variation_Details><![CDATA[Lobster, Whole - Select: 1 select lobster ($110), How do you want them prepared? Live (uncooked), Delivery Date: May 28th 2016]]></Product_Variation_Details>
<Product_Unit_Price><![CDATA[120.00]]></Product_Unit_Price>
<Product_Total_Price><![CDATA[120.00]]></Product_Total_Price>
</item>
<item>
<Product_ID><![CDATA[138]]></Product_ID>
<Product_Qty><![CDATA[1]]></Product_Qty>
<Product_SKU><![CDATA[]]></Product_SKU>
<Product_Name><![CDATA[Saturday Shipping Surcharge]]></Product_Name>
<Product_Weight><![CDATA[0.0000]]></Product_Weight>
<Product_Variation_Details><![CDATA[]]></Product_Variation_Details>
<Product_Unit_Price><![CDATA[20.00]]></Product_Unit_Price>
<Product_Total_Price><![CDATA[20.00]]></Product_Total_Price>
</item>
</Product_Details>
<Store_Credit_Redeemed><![CDATA[0.00]]></Store_Credit_Redeemed>
<Gift_Certificate_Amount_Redeemed><![CDATA[0.00]]></Gift_Certificate_Amount_Redeemed>
<Gift_Certificate_Code><![CDATA[]]></Gift_Certificate_Code>
<Gift_Certificate_Expiration_Date><![CDATA[]]></Gift_Certificate_Expiration_Date>
<Coupon_Details>
</Coupon_Details>
</order>
</orders>
所以，问题是：有没有办法以编程方式为产品或订单添加交货日期？或者或许是另一种方法来阻止人们实际订购的产品更改交货日期？