The issue arises as ContentChildren becomes undefined while trying to retrieve the data from the server

While I am loading data from the server and displaying it in ng-content, I am encountering an issue with making the first tab active by default.

When using static content like the example below, the first tab is set as active without any problems:

<app-tabs>
   <app-tab [title]="'Tab 1'"></app-tab>
   <app-tab [title]="'Tab 2'"></app-tab>
   <app-tab [title]="'Tab 3'"></app-tab>
</app-tabs>

However, when retrieving data from the server as shown in the code snippet below, the first tab is not being set as active:

<app-tabs>
    <app-tab *ngFor="let tab of tabDataFromServer" [title]="tab.name"> </app-tab>
</app-tabs>

If you want to test the app, you can view it at this URL:

For editing purposes, you can access the editor at: https://stackblitz.com/edit/angular-ivy-jvyzgn?file=src/app/tabs/tabs.component.ts

If anyone has a solution to this issue, please feel free to help. Thank you in advance :)

Answer №1

The issue of the first tab being selected too early can be resolved by making sure that the tabDataFromServer array is available before rendering the <app-tabs> component.

<app-tabs *ngIf="tabDataFromServer.length">

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