Is there a way to signal an error within an Observable function that can handle multiple scenarios depending on the specific page being viewed in an Angular application?

Currently, I have a function called getElementList() which returns Observable<Element[]>. The goal is to handle different scenarios based on the user's current page - two cases for two specific pages and one error case. However, I am struggling to implement an error return for an Observable<Element[]>.

  getElementList(): Observable<Element[]> {
    const isOnClubsPage: boolean = this.router.url.endsWith('/Clubs');
    const isOnPartenairePage: boolean = this.router.url.endsWith('/Partenaires');
    if (isOnClubsPage) {
      return this.http.get<Element[]>('api/Clubs').pipe(
        tap((clubList) => this.log(clubList)),
        catchError((error) => this.handleError(error, []))
      );
    }
    else if(isOnPartenairePage){
      return this.http.get<Element[]>('api/Partenaires').pipe(
        tap((clubList) => this.log(clabList)),
        catchError((error) => this.handleError(error, []))
      );
    }else{
      // Here is where I struggle with returning an error
      return error??
    }
  }

I'm looking for a way to effectively throw an error in the final 'else' statement but haven't found a solution yet.

Answer №1

In order to address the issue at hand, I have implemented the following solution within the else condition:

else{
  return throwError(() => new Error('error'));
}

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