Return http from service and subscribe it in component
On Fri, 3 May, 2019, 8:53 AM , <graydiamon...@gmail.com> wrote:
> Hi everyone,
> I have recently entered the Angular world and I am running into a problem
> that I really can't solve.
>
> I created a service called UsersService where inside I invoke a rest
> service that returns the list of registered users.
> getUtenti() : Utente[]{
> let data = this.http.get(this.API).subscribe((data) => {
> let output = data['utenti'];
> for (var i = 0; i < output.length; i++){
> let utente = <Utente> output[i];
> this.listaUtenti.push(utente);
> }
> });
> I call this method from a component.ts
> getUtenti(){
> this.listaUtenti = this.serviceUtente.getUtenti();
> console.log("Risultato utenti" +JSON.stringify(this.listaUtenti));
>
> The getUtents does not wait for the "this.serviceUtente.getUsenti ()" to
> end and consequently the User list will always be empty.
> In fact if I put a timeout to my getUsers it works.
>
> setTimeout(() => {
> console.log("Risultato utenti" +JSON.stringify(this.listaUtenti));
> }, 300);
>
> I was wondering, is there a way to solve this problem or do I have to play
> with event emitters? Thanks a lot to everyone
>
>
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