doudiao2335 2018-01-10 13:29
浏览 71


I'm developing a plugin that creates an order directly (no cart) and applies a coupon. In version 3.0 of the woo API the function add_coupon() has been deprecated in favour of a WC_Order_Item_Coupon object you add to the order.

Create the coupon

$coupon = new WC_Order_Item_Coupon();
$coupon->set_props(array('code' => $coupon, 'discount' => $discount_total, 
'discount_tax' => 0));

This is successful. I can validate by calling $coupon->get_discount().

I then add the coupon to the order and recalculate totals:


Logging into wp-admin I can see the order with coupon code visible. However, the coupon has had no effect on line items or total.

Have a misunderstood how api v3.0 intends us to handle coupons?

  • 写回答

2条回答 默认 最新

  • doujia5863 2018-01-10 15:29

    OK, so I played about a little longer and it looks like in V3 things are a little more manual.

    Adding a WC_Order_Item_Coupon item to a woo order does simply that. It adds the coupon object to the order object. No calculations are made and the product line items remain unchanged. You have to iterate over the product items manually and apply the coupon yourself by calculating the line item totals and subtotals. calculate_totals() then does as expected.

    // Create the coupon
    global $woocommerce;
    $coupon = new WC_Coupon($coupon_code);
    // Get the coupon discount amount (My coupon is a fixed value off)
    $discount_total = $coupon->get_amount();
    // Loop through products and apply the coupon discount
    foreach($order->get_items() as $order_item){
        $product_id = $order_item->get_product_id();
        if($this->coupon_applies_to_product($coupon, $product_id)){
            $total = $order_item->get_total();
            $order_item->set_total($total - $discount_total);

    I wrote a helper function to make sure the coupon applies to the product in question coupon_applies_to_product(). Strictly not needed given I'm creating the order entirely in code.. but I use it it other places so added it.

    // Add the coupon to the order
    $item = new WC_Order_Item_Coupon();
    $item->set_props(array('code' => $coupon_code, 'discount' => $discount_total, 'discount_tax' => 0));

    You now get the nicely formatted order in wp-admin with line items showing the specific discount + the coupon code etc.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?



  • ¥15 unity3d机械臂
  • ¥20 判断两个表是否完全相同
  • ¥20 工控机出现散热器转一下停一下这种情况,是什么原因造成的
  • ¥15 双显卡,启动docker容器报错。
  • ¥15 想编写一个期货跨期套利的程序
  • ¥15 一个线程在sleep的时候set一个信号会起作用吗
  • ¥50 如何利用matlab将现有的地基雷达回波数据调制为机载雷达回波数据
  • ¥100 需求高精度PT100设计电路和算法
  • ¥15 单片机配网,继电器开关,广播
  • ¥60 Qcustomplot绘制实时动态曲线