更新满减活动的不可用优惠券提示

src/views/tool/Instead/components/order.vue

@@ -67,7 +67,10 @@
           </div>
           <div class="u-flex u-col-center u-m-t-20 no-wrap">
             <span class="u-font-14 font-bold u-m-r-20">优惠券</span>
-            <div class="u-flex my-select" @click="openCoupon">
+            <div
+              v-if="carts.orderCostSummary.fullReduction.usedThreshold !== undefined && carts.orderCostSummary.fullReduction.usedThreshold.activityId"
+              style="font-size: 14px;color: #555;">参与满减活动不可用优惠券！</div>
+            <div class="u-flex my-select" @click="openCoupon" v-else>
               <span class="u-m-r-10">选择优惠券</span>
               <el-icon>
                 <ArrowDown />