Is it possible to continuously activate an Angular Input setter using a Subject?

Is there a way to activate an @Input setter without providing a value, by utilizing RxJS' Subject()? It seems that the setter only gets triggered once, most likely because no value has been changed.

How can I ensure that the input is activated every time next() is called on the subject?

Parent component

fromEvent(window, 'keydown').subscribe((res: KeyboardEvent) => {
  this.save$.next();
});

// HTML
<some-component [save]="(save$ | async)" />

some-component

@Input() set save() {
  console.log('save'); // only fires one time
}

Currently, the setup only triggers the first time. Subsequent triggers do not affect the binding.

EDIT: One potential solution is to add a new value each time.

this.save$.next({});

However, this approach defeats the purpose of the initial question which aimed to trigger the setter with no value.

Answer №1

One possible solution is:

Utilize the code snippet below:

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