How to synchronize nested subscribes Angular 4

Asked Mar 28 '18 at 09:01

Active Mar 28 '18 at 10:29

Viewed 53 times

I'm trying to use nested subscribe in angular 4 but I have synchronisation problem.

My code format is:

this.service1.methode1().subscribe((data1: any[]) => {
    data1.foreach(row1 => {
        this.service2.methode2GetByID(row1.id).subscribe((data2: any[]) => {
            data2.foreach(row2 => {
                this.service3.methode3GetByID(row2.id).subscribe((data3: any[]) => {
                    ...
                });
            });
        });
    });
});

So, how can I synchronize this problem.

edited Mar 28 '18 at 10:29

Narendra Jadhav

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asked Mar 28 '18 at 09:01

azguindou

possible duplicate of https://stackoverflow.com/questions/42888604/rxjs-observables-nested-subscriptions – Safiyya Mar 28 '18 at 09:03
use `mergeMap()` of observable – Radonirina Maminiaina Mar 28 '18 at 09:04
Possible duplicate of [How to force observables to execute in sequence?](https://stackoverflow.com/questions/43336549/how-to-force-observables-to-execute-in-sequence) – martin Mar 28 '18 at 09:39

How to synchronize nested subscribes Angular 4

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