Angular *ngIf="data$ async as data && data.payload; else noContent"

Question

I want to conditionally show a block only if it contains data, otherwise I will show a noContent block. the data is fetched from the server.

<ng-container *ngIf="data$ async as data && data.payload; else noContent">
{{data.payload | json}}
</ng-container>

<ng-template #noContent> No content found </ng-template>

notes: 1- I dont want to implement two s, i.e:

<ng-container *ngIf="data$ async as data ; else noContent">
  <ng-container *ngIf="data.payload; else noContent">
  {{data.payload | json }}
  </ng-container>
</ng-container>
...

2- the following statements are working

*ngIf="xx && yy"
*ngIf="data$ as data"
*ngIf="xx && data$ as data"
*ngIf="(data$ as data)?.payload?.length>0; else noContent"

Answer 1

Try like this

<ng-container *ngIf="(data$ | async ) as d; else noContent">
    <ng-container *ngIf="d.payload?.length > 5 ;else noContent">
        <h3>
            {{d.payload | json}}
        </h3>
    </ng-container>
</ng-container>

<ng-template #noContent> No content found </ng-template>

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