javascript - 如果第二级菜单列表中某个组列表同时处于事件状态，如何将其他组列表设置为非事件状态？

Question

我正在开发 Vue.js 模板，我需要创建一个直至第三层的菜单。如果我使用 v-model 执行主动停用功能，那么效果很好，但在第一级，而不是第二级。

多姆:

<template v-for="item of category">
    <template v-if="item.items!= null">
        <v-list-group :key="item.title" no-action v-model="item.active">
            <template v-slot:activator>
                <i class="mr-2" :class="item.action"></i>
                <span>{{ item.title }}</span>
            </template>
            <div>
                <template v-for="child in item.items">
                    <template v-if="child.subitems !== null">
                        <v-list-group sub-group no-action :key="child.id" prepend-icon="m"
                            v-model="child.subactive">
                            <template v-slot:activator>
                                <v-list-item-title v-text="child.title">
                                    <i class="mr-2" :class="child.action"></i>
                                </v-list-item-title>
                            </template>
                            <template v-for="(subchild) in child.subitems">
                                <v-list-item :key="subchild.id"
                                    :to="subchild.path">
                                    <v-list-item-title v-text="subchild.title"></v-list-item-title>
                                </v-list-item>
                            </template>
                        </v-list-group>
                    </template>
                </tempalte>
            </div>
        </v-list-group>
    </template>
</template>

数据:

export const category = [
            {
               action: 'icon-name',
               title: 'Level 1',
               active: false,
               items: [
                  { 
                     title: 'Level 2',
                     subactive: true,
                     path:null,
                     subitems:[
                        { title: 'Level 3', path: '/default/level3'},
                        { title: 'Level 3.1', path: '/dashboard/level3.1'}
                     ]
                  },
                  { 
                     title: 'Level 2.1',
                     subactive: false,
                     path:null,
                     subitems:[
                        { title: 'Level 3', path: '/dashboard/level3'},
                        { title: 'Level 3.1', path: '/dashboard/level3.1'},
                     ]
                  },
               ]
            }
         ]
      }

根据第一级的 vuetify 文档，我使用 v-model="item.active" 并且我在第二级尝试了同样的操作 v-model="child.subactive “ 但它不适用于第二级，我该怎么做？

Answer 1

此问题是由于嵌套级别中的 v-slot:activator 造成的，很少有组件(如工具提示、对话框)支持预定义对象传递给激活器并绑定(bind)到事件

这是perfect explanation

查找Vuetify implementation

尝试了相同的方法来利用 vuetify 行为，但没有达到预期效果

最终添加了一些手动代码并控制列表组的事件和非事件

Here is the working codepen: https://codepen.io/chansv/pen/OJJbNjm?editors=1010

完整代码:

<div id="app">
  <v-app id="inspire">
    <v-card class="mx-auto" max-width="500">
      <template v-for="item of category">
        <template v-if="item.items!= null">
          <v-list-group :key="item.title" no-action v-model="item.active">
            <template v-slot:activator>
                <i class="mr-2" :class="item.action"></i>
                <span>{{ item.title }}</span>
            </template>
            <template v-for="(child, index) in item.items">
              <template v-if="child.subitems !== null">
                <v-list-group sub-group no-action :key="child.id" v-model="child.subactive" @click="closeOther(index, item.items)">
                  <template v-slot:activator>
                    <v-list-item>
                      <v-list-item-content>
                        <v-list-item-title>
                          {{ child.title }}
                        </v-list-item-title>
                      </v-list-item-content>
                    </v-list-item>  
                  </template>
                  <v-list-item v-for="(subchild) in child.subitems" :key="subchild.id" @click="navigateTo(subchild.path)">
                    <v-list-item-action v-if="subchild.icon">
                      <v-icon>{{ subchild.icon }}</v-icon>
                    </v-list-item-action>
                    <v-list-item-content>
                      <v-list-item-title>
                        {{ subchild.title }}
                      </v-list-item-title>
                    </v-list-item-content>
                  </v-list-item>
                </v-list-group>
              </template>
            </template>
          </v-list-group>
        </template>
      </template>
    </v-card>
  </v-app>
</div>

new Vue({
  el: '#app',
  vuetify: new Vuetify(),
  data: () => ({
    category: [
            {
               action: 'icon-name',
               title: 'Level 1',
               active: false,
               items: [
                  { 
                     title: 'Level 2',
                     subactive: true,
                     path:null,
                     subitems:[
                        { title: 'Level 3', path: '/default/level3', icon: 'call_made'},
                        { title: 'Level 3.1', path: '/dashboard/level3.1', icon: 'call_made'}
                     ]
                  },
                  { 
                     title: 'Level 2.1',
                     subactive: false,
                     path:null,
                     subitems:[
                        { title: 'Level 3', path: '/dashboard/level3', icon: 'call_made'},
                        { title: 'Level 3.1', path: '/dashboard/level3.1', icon: 'call_made'},
                     ]
                  },
               ]
            },
         ],
    model: 1,
  }),
  methods: {
    navigateTo(path) {
      console.log(path);
      // this.$router.push({path: path});
    },
    closeOther(val, items) {
      items.forEach((x, i) => {
        if(val != i) x.subactive = false
      })
    },
  }
})