Feat：供应商发送商品链接至商城用户

pages/order/OrderSubmission/index.vue

@@ -514,7 +514,8 @@ export default {
         usePoints: this.usePointsCheck ? 1 : 0,
         shipping_type: parseInt(this.shipping_type) + 1
       }).then(res => {
-        this.couponList = res.data.result.couponList
+        // 批发商品不参与优惠券，后端返回 couponList 为 null，兜底保证结构一致
+        this.couponList = res.data.result.couponList || { usable: [], unusable: [] }
         if (this.isLotteryOrder()) {
           this.couponTitle = ''
           if (this.couponId !== 0) {
@@ -556,7 +557,8 @@ export default {
         _this.offlinePayStatus = data.offline_pay_status
         _this.orderGroupInfo = data
         _this.deduction = data.deduction
-        _this.couponList = data.couponList
+        // 批发商品不参与优惠券，后端返回 couponList 为 null，兜底保证结构一致
+        _this.couponList = data.couponList || { usable: [], unusable: [] }
         if (_this.couponId > 0) {
           _this.couponList['usable'].map((item, index) => {
             if (item.id === _this.couponId) {