相关疑难解决方法(0)

我有两个火灾商店集合与以下参考图像. 我想获得firstName和title.这里signup_id是从coll-signup文档id 引用的.以下代码给出了我的所作所为.

模型feed.ts

export interface Feed {
    firstName? : string;
    signup_id? : string;
    title? : string;
}

新闻feed.component模板

    <ul *ngFor="let feed of feeds">
<!-- <li>{{feed.firstName}}</li> --> // Here I want to print my first name
      <li>{{feed.title}}</li>
      <li>{{feed.signup_id}}</li>
    </ul>

新闻feed.component.ts

import { Component, OnInit } from '@angular/core';
import { Feed } from '../../models/feed';
import { FeedService } from '../../services/feed.service';
@Component({
  selector: 'app-news-feed',
  templateUrl: './news-feed.component.html',
  styleUrls: ['./news-feed.component.css']
})
export class NewsFeedComponent implements OnInit …