List users with Angular Rest-APi reqres - rest

Question

I am trying to list users from a REST-API reqres. but when I click the button to list users, I get
Cannot find a differ supporting object '[object Object]' of type 'object'. NgFor only supports binding to Iterables such as Arrays.
I can list users in console but not in page. I read that last Angular version does not read map function and I do not know why I am getting this error.
This is my users.component.ts file:
import { Component, OnInit } from '#angular/core';
import { HttpClient } from '#angular/common/http';
import 'rxjs/add/operator/map'
#Component({
selector: 'app-users',
templateUrl: './users.component.html',
styleUrls: ['./users.component.css'],
})
export class UsersComponent implements OnInit {
users: any;
constructor(private http: HttpClient) {}
ngOnInit() {}
public getUsers() {
this.users = this.http.get('https://reqres.in/api/users')
}
}
And this is my users.component.html file:
<button (click)="getUsers()">list users</button>
<div *ngFor="let user of users">
{{ user | json }}
</div>

Answer 1

this.http.get() returns an Observable. When you assign this.users = this.http.get(), the users object will be an Observable and ngFor won't be able to iterate over it.
ngOnInit() {
this.users = []; // to prevent ngFor to throw while we wait for API to return data
}
public getUsers() {
this.http.get('https://reqres.in/api/users').subscribe(res => {
this.users = res.data;
// data contains actual array of users
});
}