Task：订单提交页面优化/ 提交订单前，若在商品详情页选择了优惠券，则提交订单页面删除该按钮

pages/order/OrderSubmission/index.vue

@@ -109,7 +109,7 @@
             </view>
           </view>
           <view class="v12-justify-between v12-align-center">
-            <view class="v12-mr-2" @click="changeCoupons" v-if="couponList.usable.length !== 0">
+            <view class="v12-mr-2" @click="changeCoupons" v-if="couponList.usable.length !== 0 && !hasCoupon">
               <text class="v12-dark-text v12-font-24" >{{ couponList.usable.length === 0 ? '无' : '去选择' }}</text>
               <text class="iconfont icon-jiantou v12-font-24 v12-dark-text"></text>
             </view>
@@ -251,7 +251,9 @@
         v-if="couponList.usable.length > 0"
         :two-list="couponList"
         @change="changeCoupons"
+        @close="close"
         :currentPrice="force2Decimal(orderPrice.totalPrice)"
+        :id="couponId"
         @max="couponMax"
         :show-tab="false"
       />
@@ -372,7 +374,8 @@ export default {
       maxPoints: 0,
       pageKeyId: Object.freeze('orderConfirm'),
       total: 0,
-      couponTitle: ''
+      couponTitle: '',
+      hasCoupon: false,
     };
   },
   computed: mapGetters(["userInfo", "storeItems"]),
@@ -383,9 +386,9 @@ export default {
     shipping_type() {
       this.computedPrice('shipping_type');
     },
-    couponId() {
-      this.couponIndex = this.couponList['usable']?.findIndex(item => item.id === this.couponId)
-      this.computedPrice('couponId')
+    async couponId(value) {
+      this.couponIndex = this.couponList['usable']?.findIndex(item => item.id === value)
+      await this.computedPrice('couponId')
     }
   },
   onLoad() {
@@ -400,10 +403,11 @@ export default {
     if (that.$yroute.query.lotteryRecordId !== undefined) {
       that.lotteryRecordId = that.$yroute.query.lotteryRecordId
     }
-    that.getCartInfo()
+    that.hasCoupon = that.$yroute.query.couponId !== ''
   },
   onShow() {
     const _this = this
+    _this.getCartInfo()
     //获取用户信息
     _this.$store.dispatch("getUser", true)
     const chooseAddress = uni.getStorageSync('chooseAddress') || {}
@@ -433,7 +437,7 @@ export default {
     isNullOrEmpty,
     couponMax(e) {
       this.couponTitle = e.couponTitle
-      this.couponId = uni.getStorageSync('couponId') || 0
+      this.couponId = this.$yroute.query.couponId ||  uni.getStorageSync('couponId') || 0
     },
     showStoreList() {
       this.$store.commit("get_to", "orders");
@@ -785,6 +789,9 @@ export default {
         that.$refs.payPwdPop.close();//关闭支付密码弹窗
       });
     },
+    close() {
+      this.show = !this.show
+    },
     // v9-2
     changeCoupons(item) {
       if(!item) return