Fix：3982 【商城小程序】送礼页面优惠券改为选填模式

pages/order/OrderSubmission/index.vue

@@ -380,7 +380,7 @@ export default {
         unusable: [],
         usable: []
       },
-      couponId: uni.getStorageSync('couponId') || 0,
+      couponId: null,
       couponIndex: -1,
       show: false,
       // 是否使用积分开关
@@ -449,8 +449,8 @@ export default {
   methods: {
     isNullOrEmpty,
     couponMax(e) {
-      this.couponTitle = e.couponTitle
-      this.couponId = this.$yroute.query.couponId ||  uni.getStorageSync('couponId') || 0
+      // this.couponTitle = e.couponTitle
+      // this.couponId = this.$yroute.query.couponId ||  uni.getStorageSync('couponId') || 0
     },
     showStoreList() {
       this.$store.commit("get_to", "orders")
@@ -464,7 +464,11 @@ export default {
     usePointsCheckChange(e) {
       this.computedPrice()
     },
-    // 计算订单金额
+    
+    /**
+     * 计算订单金额
+     * @param {*} f 有值时 couponId不取默认值
+     */
     computedPrice(f) {
       postOrderComputed(this.orderGroupInfo.orderKey, {
         addressId: this.addressInfo.id,
@@ -473,6 +477,10 @@ export default {
         usePoints: this.usePointsCheck ? 1 : 0,
         shipping_type: parseInt(this.shipping_type) + 1
       }).then(res => {
+        this.couponList = res.data.result.couponList
+        if(!f) {
+          this.couponId = res.data.result.defaultCouponId
+        }
         const data = res.data;
         if (data.status === "EXTEND_ORDER") {
           this.$yrouter.replace({
@@ -797,8 +805,17 @@ export default {
       if(!item) return
       if (this.couponList.usable.length === 0) return
       this.show = !this.show
-      this.couponId = uni.getStorageSync('couponId') || 0
+      if(!item.id) {
+        this.couponId = 0
+        this.couponTitle = ''
+        this.computedPrice(1)
+        return
+      }
+      this.couponId = item.id
       this.couponTitle = item.couponTitle
+      this.computedPrice(1)
+      // this.couponId = uni.getStorageSync('couponId') || 0
+      // this.couponTitle = item.couponTitle
     }
   }
 };