Looking to create a unique event that can be triggered from any component and listened to by any other component within my Angular 7 app.
Imagine having one component with a button that, when clicked, triggers the custom event along with some data. Then, there's another component constantly listening for this event, ready to execute code and update the UI accordingly once it's triggered.
Any suggestions on how I should go about implementing this?
If you're seeking a solution to share data across components, consider using a Shared Service approach. This shared service will include a BehaviorSubject that serves as the data source, allowing you to push new data streams and expose it through asObservable.
To implement this in code:
import { Injectable } from '@angular/core';
import { Observable, BehaviorSubject } from 'rxjs';
@Injectable()
export class SharedService {
private data: BehaviorSubject<any> = new BehaviorSubject<any>(null);
data$: Observable<any> = this.data.asObservable();
constructor() { }
setData(newData) {
this.data.next(newData);
}
}
You can inject the SharedService into any component, use the setData method to update the data, and subscribe to data$ in the ngOnInit method of other components to react to changes.
For a working example, check out this Sample StackBlitz
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