Using Angular to remove information from a RESTful web service with observables

Looking to remove data from a restful webservice using Angular. Initially followed the method outlined in the Angular tutorial site:

delete(id: number): Promise<void> {
    const url = `${this.heroesUrl}/${id}`;
    return this.http.delete(url, {headers: this.headers})
    .toPromise()
    .then(() => null)
    .catch(this.handleError);
}

Although it works, I'm interested in achieving the same result using observables instead of promises. Tried the following approach, but encountered issues:

delete(id: number) {
    const url = '${this.heroesUrl}/${id}';
    return this.http.delete(url).map(
        response => {},
        error => console.log(error)
    );
}

Answer №1

I believe the reason for this is that Observables are inactive until subscribed to. The function will only execute when you use .subscribe().

Answer №2

Did you remember to sign up for the ongoing service?

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