ng重复组件

Question

我有两个组件,一个是Post:

import {Component} from '@angular/core';

@Component({
    selector: 'post',
    template: `
    <h1>{{title}}</h1>
    <p>{{postText}}</p>
    `
})
export class Post {
    title : string;
    postText : string;
    constructor(title:string, postText:string) {
        this.title  = title;
        this.postText = postText;
    }
}

另一个是新闻源:

import {Component} from '@angular/core';
import {Post} from "./app.post.component";

@Component({
    selector: 'news-feed',
    template: `
    <h1>News Feed</h1>
    <ul *ngFor='#post of posts'>
        <li *ngFor='#post of posts'>
            {{post | json}}
        </li>
    </ul>
    `
})
export class NewsFeed {
   posts : Post[];
    constructor() {
        let p1 = new Post("Post1","Wow greate post");
        let p2 = new Post("Such Post", "WoW");
        this.posts =[];
        this.posts.push(p1);
        this.posts.push(p2);
    }
}

有没有办法让我在帖子中使用模板重复每个帖子,而不是仅仅使用对象语法或格式化新闻源内的帖子.也许我正在以错误的方式接近这个,因为我是ang2的新手.任何帮助表示赞赏.

非常感谢你.

Answer 1

实际上,Angular2将为您实例化组件.只需在ngFor循环中添加选择器标记:

<ul>
  <li *ngFor="#postData of posts">
    <post [title]="postData.title"
          [postTest]="postData.postText"></post>
  </li>
</ul>

您的帖子数据必须以这种方式定义:

posts : any[];
constructor() {
  this.posts =[];
  this.posts.push({title:"Post1",postText:"Wow greate post"});
  this.posts.push({title:"Such Post", postText:"WoW"});
}

为此,您需要重构一下您的组件以添加输入:

@Component({
  selector: 'post',
  template: `
    <h1>{{title}}</h1>
    <p>{{postText}}</p>
  `
})
export class Post {
  @Input() // <-----
  title : string;
  @Input() // <-----
  postText : string;
}