Angular 12 Service Method Not Updating Component State - Handling Observables Correctly
I'm attempting to set up I've searched everywhere and can't find a clear answer... I'm trying to debug After trying multiple solutions online, I still can't figure this out... I'm working on a project and hit a roadblock. I'm encountering an issue where my Angular 12 component does not update its state when I call a method from a service that returns an observable. I've set up a service method to fetch data from an API, but my component isn't reflecting the updates after the observable emits new values. Here's what my service looks like: ```typescript // data.service.ts import { Injectable } from '@angular/core'; import { HttpClient } from '@angular/common/http'; import { Observable } from 'rxjs'; @Injectable({ providedIn: 'root' }) export class DataService { private apiUrl = 'https://api.example.com/data'; constructor(private http: HttpClient) { } fetchData(): Observable<any> { return this.http.get(this.apiUrl); } } ``` And in my component, I'm subscribing to this observable: ```typescript // my.component.ts import { Component, OnInit } from '@angular/core'; import { DataService } from './data.service'; @Component({ selector: 'my-component', templateUrl: './my.component.html', }) export class MyComponent implements OnInit { data: any; constructor(private dataService: DataService) { } ngOnInit(): void { this.loadData(); } loadData(): void { this.dataService.fetchData().subscribe( (response) => { this.data = response; console.log('Data loaded:', this.data); }, (error) => { console.error('Error loading data:', error); } ); } } ``` The issue I'm facing is that when the `fetchData` method is called, the console logs the data correctly, but the template does not reflect the updated `data` variable. I verified that there are no errors in the console and that the API is returning the correct response. My HTML is simply displaying the data like this: ```html <!-- my.component.html --> <div *ngIf="data"> <p>Data: {{ data | json }}</p> </div> ``` I've also tried using the `async` pipe in the template, but it didn’t help either. I've checked for change detection issues, as I’m using OnPush strategy in other components, but I believe that’s not applicable here since I haven't specified it for this component. What could be causing the template not to update? Is there something I'm missing in the observable handling, or do I need to manually trigger change detection? Any insights would be greatly appreciated. For context: I'm using Typescript on macOS. Any help would be greatly appreciated! Cheers for any assistance! The stack includes Typescript and several other technologies. I'd really appreciate any guidance on this. I'm working with Typescript in a Docker container on Ubuntu 20.04. Is there a better approach? Could someone point me to the right documentation? This is for a REST API running on Debian. Any pointers in the right direction?