outputFromObservable
Declares an Angular output that is using an RxJS observable as a source for events dispatched to parent subscribers.
outputFromObservable<T>(observable: Observable<T>, opts?: OutputOptions): OutputRef<T>
Parameters
observable
|
Observable<T> |
|
opts
|
OutputOptions |
Optional. Default is |
Returns
Description
The behavior for an observable as source is defined as followed:
- New values are forwarded to the Angular output (next notifications).
- Errors notifications are not handled by Angular. You need to handle these manually.
For example by using
catchError
. - Completion notifications stop the output from emitting new values.
Further information is available in the Usage Notes...
Usage notes
Initialize an output in your directive by declaring a
class field and initializing it with the outputFromObservable()
function.
@Directive({..})
export class MyDir {
nameChange$ = <some-observable>;
nameChange = outputFromObservable(this.nameChange$);
}