ng-content for循环 [英] ng-content in for loop

问题描述

我正在尝试使用引导程序创建选项卡组件.

I'm trying to create a tab component using bootstrap.

<app-tabs>
  <app-tab [label]="'label1'">Description 1</app-tab>
  <app-tab [label]="'label2'">Description 2</app-tab>
</app-tabs>

我看了这篇文章: https://juristr.com/blog/2016/02/learning-ng2-creating-tab-component/ 但是我的用例是不同的.

I had a look at this article: https://juristr.com/blog/2016/02/learning-ng2-creating-tab-component/ but my use case is different.

我需要在for的每个循环中使用不同的<ng-content>. 这是我的朋克: https://plnkr.co/edit/N2p8Vx?p=preview 它将在第二个选项卡中同时打印这两个描述，而第一个则为空.

I need to use a different <ng-content> in each loop of the for. This is my plunker: https://plnkr.co/edit/N2p8Vx?p=preview It prints both descriptions in the second tab, leaving the first one empty.

感谢任何帮助！

推荐答案

您可以看看角度材料如何实现制表符控制.

You can take a look at how angular material implemented tabs control.

对此方法有一些注意事项 https://github.com/angular/angular/issues/18691 ，但是无论如何，这里是简化版本:

There are some caveats about this approach https://github.com/angular/angular/issues/18691 but anyway here is simplified version:

tab.component.ts

@Component({
  selector: 'app-tab',
  template: `
    <ng-template>
      <ng-content></ng-content>
    </ng-template>`
})
export class TabComponent {
  ...

  @ViewChild(TemplateRef) template: TemplateRef<any>;
}

tabs.component.ts

<div *ngFor="let tab of tabs; let i = index" 
           class="tab-pane" [ngClass]="{'active': i === 0}"...>
   <ng-container *ngTemplateOutlet="tab.template"></ng-container>
</div>

柱塞示例

Plunker Example

这篇关于ng-content for循环的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！