Managing errors with Angular2 Observables within the HTML template

The updated Angular's use of observables is a game-changer. No more long chains of .done().fail().always() like in JQuery - NG2 simplifies it all with the | async pipe. However, what happens if something goes wrong while loading data for myObservable? Is there a way to detect and handle failure in the template?

// sample.component.ts

class SimpleComponent{
   myObservable:Observable<string>;
   constructor(private _someService:SomeService){
       myObservable = _someService.getSomeDataByHttp();
   }
}

// simple.component.html

<div>
   <div>
      {{myObservable | async}}
   </div>
   <div (anyErrorInObservable)="myObservable"> // Is there a way to show an error message if the observable fails?
       Oops, an error occurred while fetching myObservable.
   </div>
</div>

I know handling this can be done using .catch(), but I'm curious if there's a more elegant solution out there.

Thanks in advance!

Answer №1

Handling errors in the template is not supported at the moment. One workaround is to utilize operators such as catch() to prevent errors from propagating to the template.

For further information, please refer to this related unresolved matter: https://github.com/angular/angular/issues/7539

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