What is the optimal method for navigating through a complex nested object in Angular?

Looking to navigate through a nested object structure called purchase. Within this structure, there is a sub-array named purchaseProducts which contains another sub-array called products along with additional data.

What methods do you suggest for efficiently navigating such a nested object?

I attempted using *ngFor in the following way:

<div *ngFor = "let data of purchase "> 
        {{data.date | slice: 0:10}}
        {{data.totalprice}}

    <div *ngFor="let product of purchase.purchaseProducts">

          {{product.id}} // not working
          {{product.quantity}} //not working
          {{product.price}}
          {{product.products.name}}
    </div>
</div>

However, the inner div does not show any values.

Appreciate your assistance in advance.

https://i.sstatic.net/zVGW0.png

Answer №1

It appears that there is no purchase_product in your JSON data. Consider using data.purchaseProducts instead:

<div *ngFor = "let data of purchase "> 
        {{data.date | slice: 0:10}}
        {{data.totalprice}}

    <div *ngFor="let product of data.purchaseProducts">

          {{product.id}} // this section is not functioning correctly
          {{product.quantity}} // this section is also not functioning properly
          {{product.price}}
          {{product.products.name}}
    </div>
</div>

Answer №2

It is recommended to utilize

<div *ngFor="let product of data.purchaseProducts">
in place of
<div *ngFor="let product of purchase.purchase">
. The reason behind this advice is that purchaseProduct serves as a key within the object data

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