How can I make sure to wait for a subscribe call in Angular before proceeding?

Is there a way to pause the execution of my code until a subscribe function is complete?

I have a subscribe function within another function, and I want to ensure that the outer function only finishes once the subscribe function has executed.

Here is my Subscribe Function:

this.massService.getMass(token, userId).subscribe((data: IMass) => {
    // Execution
})

And here is my Service Function:

getMass(token: string, userId: string): Observable<IMass> {
    const httpParams = new HttpParams().set('userId', userId);

    const options = {
        params: httpParams,
        headers: new HttpHeaders().set('Authorization', 'Bearer ' + token)
    };
    return this.http.get<IMass>(environment.apiUrl + '/mass', options);
}

Answer №1

To transform an observable into a promise, you can do the following:

this.weightService.getWeight(token, userId).pipe(take(1),tap((result) => // logic here)).toPromise();

You can then use await just like you do with promises.

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