Angular - HttpClient: Map Get method object result to array property

Question

I am calling an API that returns a JSON Object. I need just the value of the array to map to a Observable . If I call api that just returns the array my service call works.

Answer 1

You can simply .map() your http call, which is an Observable, to return the data type that you want.

findAllShows(): Observable {
    return this.http
        .get(`${someURL}/shows`)
        .map(result=>result.shows)
}

Your httpClient.get() should return an Observable, which you have explicitly stated it thought Observable. You .map() is an operator that transform the observable into a new one.

More on .map() operator: http://reactivex.io/documentation/operators/map.html

Update:

For RXJS version 6 and above, simply use .pipe() to pipe the .map() operator:

findAllShows(): Observable {
    return this.http
        .get(`${someURL}/shows`)
        .pipe(map(result=>result.shows))
}