Angular2 - 递归 html 而不创建新组件? [英] Angular2 - recursive html without making a new component?

问题描述

在角度 1 中，我可以执行以下操作:

<script type="text/ng-template" id="commentReplies.html"><div><div class="commentChildBoxStyle" ng-hide="comment.hideComment"><div style="min-width: 250px;"><div ng-repeat="comment.replies 中的评论" ng-include="'commentReplies.html'"></div>

我意识到我可以在 Angular2 中递归调用组件及其模板，但是有没有办法只递归构建 HTML?该逻辑似乎更适合父组件而不是一系列子组件.

解决方案

在 Angular 中肯定有一个 html 唯一的解决方案:

Angular 2 递归列表
<ul><ng-template #recursiveList let-list><li *ngFor="let item of list">{{item.title}}<ul *ngIf="item.children.length > 0"><ng-container *ngTemplateOutlet="recursiveList; context:{ $implicit: item.children }"></ng-container></ng-模板><ng-container *ngTemplateOutlet="recursiveList; context:{ $implicit: list }"></ng-container>

这是一个要点.

In angular 1 I was able to do something like:

<script type="text/ng-template" id="commentView.html">
    <div>
        <div style="float: left; position: absolute;" ng-style="comment.displayPercent">
    </div>
</script>

<script type="text/ng-template" id="commentReplies.html">
    <div>
        <div class="commentChildBoxStyle" ng-hide="comment.hideComment">
            <div style="min-width: 250px;">

                <div ng-repeat="comment in comment.replies" ng-include="'commentReplies.html'"></div>
            </div>

        </div>
    </div>
</script>

I realize I can recursively call a component along with it's template in Angular2, but is there a way to recursively build HTML only? The logic seems like it would fit better with the parent component rather than with a series of child components.

解决方案

There certainly is a html only solution in Angular:

<h1>Angular 2 Recursive List</h1>
<ul>
  <ng-template #recursiveList let-list>
    <li *ngFor="let item of list">
      {{item.title}}
      <ul *ngIf="item.children.length > 0">
        <ng-container *ngTemplateOutlet="recursiveList; context:{ $implicit: item.children }"></ng-container>
      </ul>
    </li>
  </ng-template>
  <ng-container *ngTemplateOutlet="recursiveList; context:{ $implicit: list }"></ng-container>
</ul>

Here's a gist.

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