javascript - angular2/javascript - NgFor 遍历对象内部的数组

Question

我有自己的对象，其中包含我使用 ngFor 循环遍历的数据。但是对象中有一个数组部分，我也想在 <li></li> 中循环它

目前看起来是这样的。但是我不想要一个完整的字符串 <li></li>我只想要一 block 阵列。

相关代码:

tier.model

export class Tier {
  constructor (
    public id: number,
    public title: string,
    public rewards: any[],
    public price: number
  )
  {}
}

组件:

export class PackagesComponent {  //will be renamed to TierComponent
  public tierToEdit: Tier;
  editMode = false;
  tiers: Tier[] = [
    new Tier(
      10,
      'First Tier',
      ['Server access - Simple', 'Win something small', 'and so on'],
      5.00),
    new Tier(
      11,
      'Second Tier',
      ['Server access - Standard', 'Win something medium', 'and so on and on'],
      10.00),
    new Tier(
      12,
      'Third Tier',
      ['Server access - Advanced', 'Win something big', 'and so on and on and on'],
      10.00)
  ]

模板:

<div class="row">
  <div  class="col-md-4" *ngFor="let tier of tiers; let i=index;">
    <ul class="pricing-table">
      <li class="plan-name">
        {{ tier.title }}
      </li>
      <li *ngFor="let reward of tiers">
        {{ reward.rewards }}
      </li>
      <p class="plan-price">{{ tier.price }}</p>
      <li class="plan-action">
        <a class="btn btn-primary" (click)="onEdit(tier)">Edit</a>
        <a class="btn btn-success" (click)="this.clickSave()">SaveYes</a>
        <a class="btn btn-warning" >Get</a>
      </li>
    </ul>

最后应该是这样的:

我尝试的其他方法是:

<div  class="col-md-4" *ngFor="let tier of tiers; let i=index;">
    <!-- Show Mode -->
    <ul *ngIf="!editMode || tierToEdit != tier" class="pricing-table">
      <li class="plan-name">
        {{ tier.title }}
      </li>
      <li *ngFor="let reward of tiers; let i=index">
        {{ reward.rewards[i] }}
      </li>

它给了我第一个数组的第一个元素、第二个数组的第二个元素和第三个数组的第三个元素:

希望这不会造成混淆，对于 angular/javascript 来说仍然很新，很抱歉可能会提出愚蠢的问题或使用错误的术语 :) 非常感谢!

Answer 1

您还需要在第二个 *ngFor 中迭代嵌套数组，例如:

 <div class="row">
   <div  class="col-md-4" *ngFor="let tier of tiers; let i=index;">
    <ul class="pricing-table">
      <li class="plan-name">
        {{ tier.title }}
      </li>
      <li *ngFor="let reward of tier.rewards">
        {{reward}}
      </li>
      <p class="plan-price">{{ tier.price }}</p>
      <li class="plan-action">
        <a class="btn btn-primary" (click)="onEdit(tier)">Edit</a>
        <a class="btn btn-success" (click)="this.clickSave()">SaveYes</a>
        <a class="btn btn-warning" >Get</a>
      </li>
    </ul>
 </div>
</div>