待申领物资-购物车操作逻辑完善

 <!--
  * @Date: 2024-07-23 12:53:15
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2024-07-24 14:44:31
+ * @LastEditTime: 2024-07-24 15:15:38
  * @FilePath: /temple_material_request/src/views/material_request.vue
  * @Description: 申领物资页面
 -->
 <template>
   <div class="material-request-page">
-
     <van-tabs v-model:active="active" @change="onChange" sticky :color="styleColor.baseColor">
       <van-tab v-for="index in 8" :title="'标签 ' + index">
         <div class="list-wrapper">
@@ -81,7 +80,7 @@
 <script setup>
 import { ref } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
-
+import { showToast } from 'vant';
 import { Cookies, $, _, axios, storeToRefs, mainStore, Toast, useTitle } from '@/utils/generatePackage.js'
 //import { } from '@/utils/generateModules.js'
 //import { } from '@/utils/generateIcons.js'
@@ -192,6 +191,11 @@ const addShoppingCart = () => { // 加入购物车
   .forEach(item => {
     shop_cart_list.value = shop_cart_list.value.concat(item);
   });
+  // 购物车为空提示
+  if (!shop_cart_list.value.length) {
+    showToast('请选择物资');
+    return;
+  }
   // 校验购物车值
   let error_list = shop_cart_list.value.filter((item) => { if (item.num === null || item.num === '') { return item;} })
   if (error_list.length) {
@@ -213,7 +217,7 @@ const goShoppingCart = () => { // 跳转购物车
 }
 
 const show_choose_material = ref(false);
-const onCloseChoose = () => {
+const onCloseChoose = () => { // 关闭选择物资弹窗回调
   show_choose_material.value = false;
 }