How to iterate through an API response containing a JSON array in Angular2

Question

This is probably an easy answer, but I already spent days trying to figure it out, without any success.

An HTTP GET returns this body response:

{"members":[{"id":1484,"organization_id":3},{"id":1777,"organization_id":3},{"id":2214,"organization_id":3},{"id":2261,"organization_id":3}]}

I try to iterate trough it in Angular2:

getMembers() {
    this.http.get('http://server/user/members')
    .map(res => res.json())
    .subscribe(
        data => this.members = data.members
    );
}

How can I loop through members and read their property? The html template can do it perfectly well:

<li *ngFor="let m of session.members">
{{m.id}}
</li>

I don't really know what the problem is. Please check my answer and add a comment if you want something different. — Günter Zöchbauer
– Günter Zöchbauer, Commented Jun 12, 2016 at 14:33

Günter Zöchbauer · Accepted Answer · 2016-06-12 14:32:15Z

3

getMembers() {
    this.http.get('http://server/user/members')
    .map(res => res.json())
    .subscribe(
        data => {
            this.members = data.members;
            this.members.forEach(m => console.log(m.id));
        });
    );
}

answered Jun 12, 2016 at 14:32

Günter Zöchbauer

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2 Comments

Quentin Gillet Over a year ago

Well, I feel stupid now. Thanks a lot Günter for your swift and clear answer. Actually I tried the forEach function in a wrong way and I abandoned it because of that.

Günter Zöchbauer Over a year ago

No need to feel stupid. The brain sometimes gets a bit lost when experimenting with new stuff :D

Daniel Kucal · Accepted Answer · 2016-06-12 16:23:30Z

0

If you want to iterate over it in template, try:

<li *ngFor="#m of session.members | async">
   {{m.id}}
</li>

answered Jun 12, 2016 at 16:23

Daniel Kucal

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