Here is my project: https://stackblitz.com/edit/planificador?file=src/app/planificador/components/resumen/resumen.component.ts
I have a MainContentComponent (parent) within which I have several child components
Now I see that inside ContratosComponent for example get proyectoId perfectly but in ResumenComponent I get undefined
Any idea please?
I run the stackblitz and it seems both components returned the proyectoId correctly – so I assume it might depend on some other things as well and not easily reproduced?
Your issue might be that the
proyecto$ observable comes from
BehaviourSubject. This means that if not value was pushed to that subject, it will emit null.
<div *ngIf="proyecto$ | async as proyecto"> will return true as soon as the observable emits. So, if no proyecto was pushed to the
BehaviourSubject, it will return true and
proyecto will be null. This might be the cause of your issue.
Again, it’s hard to say because it seems that there is some race condition that causes the issue to not always happen.