Is there a way for me to retrieve the catchError message from the service method within the component?

Question

Is there a way for me to retrieve the catchError message from the service method within the component?

fetchClientFinanceDetails(id: string, updateType: OnvioClientUpdateType): Observable <ClientFinance> {
  return this.getClientContactDetailsById(id, updateType).pipe(mergeMap((data: any) => {
    const finance = this.mapDataToClientFinance(data);
    return of(finance);
  })).pipe(catchError(ExceptionHandler.handleError));
}

I am invoking the above function from a component and it is defined in my service. However, I am facing an issue where the error returned by catchError function gets overridden by the Observable ClientFinance. How can I handle this situation?

angular typescript

Answer 1

Answer №1

If you encounter an error, you can use the throwError method to handle it.

Here's an example implementation:

import { Observable, of, throwError } from "rxjs";
import { catchError, map } from "rxjs/operators";

getFinanceDetails(clientId: string, type: OnvioClientUpdateType): Observable <ClientFinance> {
  return this.getClientContactDetailsById(clientId, type)
    .pipe(
       mergeMap((data: any) => {
          const clientFinanceDetails = this.clientContactDetailsByJsonData(data);
          return of(clientFinanceDetails);
       }),
       catchError(error => throwError("An error occurred: ", error))
    );
}

Answer 2

If you encounter an error, you can use the throwError method to handle it.

Here's an example implementation:

import { Observable, of, throwError } from "rxjs";
import { catchError, map } from "rxjs/operators";

getFinanceDetails(clientId: string, type: OnvioClientUpdateType): Observable <ClientFinance> {
  return this.getClientContactDetailsById(clientId, type)
    .pipe(
       mergeMap((data: any) => {
          const clientFinanceDetails = this.clientContactDetailsByJsonData(data);
          return of(clientFinanceDetails);
       }),
       catchError(error => throwError("An error occurred: ", error))
    );
}

Answer 3

Answer №2

To address the issue using catchError, you can follow this method:

catchError(error => {
    console.log('Handling error within local scope and re-throwing it:', error);
    ExceptionHandler.handleError;
    return throwError('An error has occurred.', error);    
})

Answer 4

To address the issue using catchError, you can follow this method:

catchError(error => {
    console.log('Handling error within local scope and re-throwing it:', error);
    ExceptionHandler.handleError;
    return throwError('An error has occurred.', error);    
})

Is there a way for me to retrieve the catchError message from the service method within the component?

Answer №1

Answer №2

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