CODEWITHSUNDEEP
angularfirebaseangularfire2angularfire
MrRobot
MrRobot

Reputation: 1167

Retrieve single object Firebase Angular

I'm working on this application but I'm having problems retrieving the object's entire information.

I have a "news" page that will display all the lists from the DB, that one is working fine, when you click on the news, it will take you to the "details" page, I can do the routing, no problem.

The issue is that I can't get the data from Firebase. What am I doing wrong?

Thanks

Component:

import { ActivatedRoute, Params, Router } from '@angular/router';
import { AngularFireDatabase, AngularFireObject } from '@angular/fire/database';
import { Component, OnInit, ViewChild, ElementRef } from '@angular/core';
import { NewsService } from '../news.service';
import { Observable } from 'rxjs';

@Component({
  selector: 'app-display',
  templateUrl: './display.component.html',
  styleUrls: ['./display.component.css']
})
export class NewsDisplayComponent implements OnInit {
  @ViewChild('closeBtn') closeBtn: ElementRef;
  id;

  news: Observable<any>;

  constructor(private db: AngularFireDatabase, private route: ActivatedRoute, private newsService: NewsService, private router: Router) { }

  ngOnInit() {
    this.id = this.route.snapshot.params['id'];
    this.news = this.newsService.getSingleNews(this.id).valueChanges();
    console.log(this.news);
  }

  closeModal() {
    this.router.navigate(['/news']);
    this.closeBtn.nativeElement.click();
  }

}

Service.ts

import { map } from 'rxjs/operators';
import { AngularFireDatabase, AngularFireList } from '@angular/fire/database';
import { News } from './news.model';
import { Injectable } from '@angular/core';

@Injectable()
export class NewsService {
    news: AngularFireList<News[]>;
    constructor(private db: AngularFireDatabase) {
    }
    getNews() {
        this.news = this.db.list('news');
        return this.news.valueChanges();
    }

    getSingleNews(id: string) {
        return this.db.object('news' + id);
    }
}

HTML

<div class="modal-dialog modal-dialog-centered" role="document">
    <div class="modal-content">
      <div class="modal-header">
        <h5 class="modal-title" id="exampleModalCenterTitle">{{ id }}</h5>
        <button type="button" class="close" data-dismiss="modal" aria-label="Close" #closeBtn (click)="closeModal()">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body">
        <h1>{{ news.title | async }}</h1>
        <h2>{{ news.subtitle | async }}</h2>
        <p>{{ news.article | async}}</p>
      </div>
    </div>
</div>

Upvotes: 1

Views: 5597

Answers (1)

ams
ams

Reputation: 449

Try it like this:

Component

this.newsService.getSingleNews(this.id).subscribe(news => {
    this.news = news
});

Service.ts

It seems like you're missing a slash after news.

getSingleNews(id: string) {
    return this.db.object('news/' + id);
}

Update:

Change news: Observable<any> property to an object. If you do it the way I showed you it isn't an observable anymore.

Upvotes: 3

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