如何使用 Vue 命名插槽呈现静态内容列表?

How to render a list of static content with Vue named slot?(如何使用 Vue 命名插槽呈现静态内容列表?)

问题描述

我无法弄清楚如何让以下工作:

I have trouble figuring out how to get the following to work:

我的父模板

<comp>
  <a href="#" slot="links">link 1</a>
  <a href="#" slot="links">link 2</a>
</comp>

我的组件 comp 模板如下所示:

and my component comp template looks like the following:

<ul class="comp">
  <li class="comp-item"><slot name="links"></slot></li>
</ul>

目前我所有的锚点都指向那个单一的 li 标签(这是预期的)但我希望能够为我插入的每个命名插槽生成多个 li，如下所示:

currently all my anchors goes to that single li tag (which is expected) but I would like to be able to produce multiple li for every named slot I inserted like the following:

<ul class="comp">
  <li class="comp-item"><a href="#" slot="links">link 1</a></li>
  <li class="comp-item"><a href="#" slot="links">link 2</a></li>
</ul>

有什么方法可以在不使用作用域插槽的情况下实现我的需要?因为我的内容是纯 HTML，所以我觉得没有必要将静态内容放在 prop 中以呈现它们.

Is there any way to achieve what I need without using scoped slot? Because my content is pure HTML so I feel it is unnecessary to put static content inside prop in order to render them.

据我所见，大多数 vue UI 框架都要求您为列表项使用另一个自定义组件，我觉得这个问题已经过时了.有没有其他方法可以做到这一点?

From what I have seen, most vue UI framework requires you to use another custom component for the list item, which I feel is over killed for the problem. Is there any other way to do this?

推荐答案

这很容易通过渲染函数完成.

This is easily accomplished with a render function.

Vue.component("comp", {
  render(h){
    let links = this.$slots.links.map(l => h('li', {class: "comp-item"}, [l]))
    return h('ul', {class: 'comp'}, links)
  }
})

这是一个工作示例.

console.clear()

Vue.component("comp", {
  render(h){
    let links = this.$slots.links.map(l => h('li', {class: "comp-item"}, [l]))
    return h('ul', {class: 'comp'}, links)
  }
})

new Vue({
  el: "#app"
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.13/vue.js"></script>
<div id="app">
  <comp>
    <a href="#" slot="links">link 1</a>
    <a href="#" slot="links">link 2</a>
  </comp>
</div>

或者借助一个用于渲染 vNode 的小型实用程序组件，您可以使用模板来执行此操作.

Or with the help of a small utility component for rendering vNodes you could do it like this with a template.

Vue.component("vnode", {
  functional: true,
  render(h, context){
    return context.props.node
  }
})

Vue.component("comp", {
  template: `
    <ul class="comp">
      <li class="comp-item" v-for="link in $slots.links"><vnode :node="link" /></li>
    </ul>
  `
})

new Vue({
  el: "#app"
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.13/vue.js"></script>
<div id="app">
  <comp>
    <a href="#" slot="links">link 1</a>
    <a href="#" slot="links">link 2</a>
  </comp>
</div>

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