Vue.Draggable tree test

by kabanoki

HTML

<ul id="app">
 <draggable :group="{ name: 'people'}">
   <li v-for="item, index in items" :key="item.no">
   {{item.name}}-(No.{{item.no}})
     <ul class="sub">
       <draggable :group="{ name: 'people'}">
           <transition-group>
           <li :key="item.no+'-'+item.no">{{item.no+'-'+item.no}}</li>
           </transition-group>
       </draggable>    
     </ul>
   </li>
 </draggable>
</ul>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/vue.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/Sortable.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Vue.Draggable/2.23.2/vuedraggable.umd.min.js"></script>

CSS

#app {
  padding : 15px;
}

ul {
  padding: 30px;
  border: solid #000 1px;
}

li {
  cursor:pointer;
  padding: 10px;
  border: solid #ddd 1px;
  margin-bottom: 100px;
  position: relative;
  z-index: 1;
}

ul.sub {
  position: relative;
  background-color: #f00;
  top: 100px;
  left: 35px;
  z-index: 2;
}

ul.sub li{
z-index: 2;
}

Vue

new Vue({
  el: "#app",
  data: {
    items:[
      {no:1, name:'キャベツ', categoryNo:'1'},
      {no:2, name:'ステーキ', categoryNo:'2'},
      {no:3, name:'リンゴ', categoryNo:'3'}
    ]
  }
});