angular2 - Having trouble retrieving data from subject

Why am I unable to successfully initialize and retrieve data from a service using a subject in Angular?

HomeComponentComponent.TS

export class HomeComponentComponent implements OnInit {

  public homeSub;
  constructor(
    private subService: SubjectService
  ) { }
  
  ngOnInit() {
    this.subService.initialiseSubject(true);
    this.subService.getSubject().subscribe(res => {
      this.homeSub = res;
      console.log(res);
    })
  }

}

HomeComponentComponent.HTML

<p>
{{homeSub}}
</p>

subject.service.ts

import { Injectable } from '@angular/core';
import { Subject } from 'rxjs';

@Injectable({
  providedIn: 'root',
})
export class SubjectService {

  constructor() { }
  private subTest = new Subject<boolean>();

  initialiseSubject(params: boolean) {
    this.subTest.next(params);
  }
  getSubject() {
    return this.subTest.asObservable();
  }
}

I am facing issues as no output is being displayed on the console or HTML.
View Stackblitz example

Answer №1

By switching to a BehaviorSubject, you will receive the value that is emitted.

const test = new BehaviorSubject<boolean>(false);

I recommend taking a look at this informative post for more details.

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