如何让异步 pipe 与 rxjs 一起使用

Question

I need help, since the else loading of my async pipe does not trigger, even though the data load works correctly, the loading template never triggers when subscribing, I have a BehaviorSubject in my service. If anyone help me with any solution I would appreciate it too much as I have tried a lot of things and could not reach the expected result. My expected result is that when choosing a date, it triggers the subscription and while it subscribes the loading is triggered, if the length is greater than 0 the table is loaded, if not, it shows the template that there are no items. Thank you very much in advance.

Answer 1

BehaviourSubject() is an observable, so you will need to subscribe to your data source before setting your subject to the result of your observable. Without a subscription there will be no result!

Try the following in your test (if list is an observable in your api service):

this.apiAgenda().list.subscribe(res => 
{
  this.list$.next(res); 
});