我试图使用嵌套的vue-draggable元素来直观地表示歌曲结构(具有潜在的重复性)。
这就是我想出的原型:
var vm = new Vue({
el: "#main",
data: {
"structure": ["Prelude", "Verse", ["Chorus", "Verse"], "Last Chorus"]
},
});
#main {
text-align: center;
width: 300px;
background-color: #EEE;
padding:10px;
}
.element {
text-align: center;
padding: 10px;
margin: 5px auto;
border-radius: 10px;
color: #FFF;
font-family: sans-serif;
font-weight: bold;
}
.tag {
width: 150px;
background-color: #007BFF;
}
.group {
width: 175px;
border: 3px solid #CED4DA;
background-color: #FFF;
}
<script src="//cdnjs.cloudflare.com/ajax/libs/vue/2.5.2/vue.min.js"></script>
<script src="//cdn.jsdelivr.net/npm/[email protected]/Sortable.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/Vue.Draggable/2.15.0/vuedraggable.min.js"></script>
<div id="main">
<draggable v-for="tag in structure" :options="{group:'tags'}">
<div v-if="!Array.isArray(tag)" class="tag element">
{{tag}}
</div>
<draggable v-else :options="{group:'tags'}" class="group element">
<div v-for="tag2 in tag" class="tag element">
{{tag2}}
</div>
</draggable>
</draggable>
{{structure}}
</div>
即使是Vue.js的新手,这似乎也不是“走路”。我解决这个问题的具体问题是:
你应该:
1)将数据结构更改为递归数据结构:
data: {
"structure": [
{ name: "Prelude"},
{ name: "Verse"},
{ name: "Middle", children: [{ name: "Chorus"}, { name: "Verse"}]},
{ name: "Last Chorus"}
]
},
2)使用draggable使用递归组件,例如:
<template>
<draggable class="dragArea" tag="ul" :list="data" :group="{ name: 'g1' }">
<li v-for="el in children" :key="el.name">
<p>{{ el.name }}</p>
<nested-draggable v-if="el.children" :tasks="el.children" />
</li>
</draggable>
</template>
看这个工作示例: