Spreading a json object into an iterable

Question

In my Angular service script (following snippet) I receive a dictionary of customer data from my MongoDB database via Django:

getConsumersMongodb(): Observable<any> {
    return this.httpClient.get(`${this.baseMongodbApiUrl}`);
}

The dictionary that comes back is like this:

{
    "message": "Got all consumers' info successfully!",
    
    "consumers": {
        "id": 8, 
        "age": "51 - 60", 
        "gender": "Female"
        ...
    },
    
    "error": "Error!"
}

I am only interested in consumers data, so I parse it out in my Angular component TypeScript code like this:

ngOnInit(): void {

    this.dbService.getConsumersMongodb()
      .subscribe(responseData => {
        this.loadedConsumersDict = responseData;
        this.consumersInfo = this.loadedConsumersDict["consumers"]);
        console.log(this.consumersInfo);
      });
}

Of course, in my dev console, I get this:

{id: 8, age: '51 - 60', gender: 'Female', …}

So far, so good...

Now, I need to convert this json object into an iterable, such as an array, so that I can go through its fields and display them in my Angular html template.

So, I modified my code to this:

ngOnInit(): void {

    this.dbService.getConsumersMongodb()
      .subscribe(responseData => {
        this.loadedConsumersDict = responseData;
        this.consumersInfo = this.loadedConsumersDict["consumers"]);
        let temp = this.loadedConsumersDict["consumers"];
        this.loadedConsumersArray = Object.keys(temp).map(function (key) {
          return { [key]: temp[key] };
        });
        console.log(this.loadedConsumersArray);
      });
}

But this gives me the following:

{id: 8}
{age: '51 - 60'}
{gender: 'Female'}
...

This is not what I want. How do I place the content into an iterable, so that I can simply use my following snippet in my html template code to display the fields?

<li class="list-group-item" *ngFor="let consumer of loadedConsumersArray">
    <p><i>Id:</i> {{ consumer.id }}</p>
    <p><i>Gender:</i> {{ consumer.gender }}</p>
    <p><i>Age Group:</i> {{ consumer.age }}</p>
    ...

I have come a long way to achieve this much, but now I am confused and need help. I would appreciate any help.

Answer 1

consumers in the response is an object and not an array. Therefore, you don't need to convert anything into an array, and surely no need to use *ngFor if you don't have to.

Just make sure that consumersInfo is a public property, and then in your template write the following:

<li class="list-group-item">
    <p><i>Id:</i> {{ consumersInfo.id }}</p>
    <p><i>Gender:</i> {{ consumersInfo.gender }}</p>
    <p><i>Age Group:</i> {{ consumersInfo.age }}</p>
    ...