Within my Angular application, I have implemented a Material dialog to present error messages to users. To handle errors effectively, I have crafted an error service with methods dedicated to managing both server-side (HTTP) errors and client-side errors.
import { Injectable } from '@angular/core';
import { HttpErrorResponse } from '@angular/common/http';
@Injectable({
providedIn: 'root'
})
export class ErrorService {
getClientMessage(error: Error): string {
if (!navigator.onLine) {
return 'No Internet Connection';
}
return error.message ? error.message : error.toString();
}
// Other methods omitted for brevity
}
In my setup, I utilize an HTTP interceptor to intercept HTTP errors.
import { Injectable } from '@angular/core';
import {
HttpEvent,
HttpInterceptor,
HttpHandler,
HttpRequest,
HttpErrorResponse
} from '@angular/common/http';
import { Observable, throwError } from 'rxjs';
import { retry, catchError } from 'rxjs/operators';
@Injectable()
export class HttpErrorInterceptor implements HttpInterceptor {
// Implementation details omitted
}
Upon encountering errors, I have a global error handler in place that extends Angular's default ErrorHandler.
import { ErrorHandler, Injectable } from '@angular/core';
// Other imports and service initialization omitted
@Injectable({
providedIn: 'root'
})
export class GlobalErrorHandler implements ErrorHandler {
// Handler method logic
}
Despite the setup, I have encountered an issue regarding the functionality of the error dialog box. While client-side errors are handled seamlessly, HTTP errors exhibit unexpected behavior with the dialog box not functioning as intended. Further analysis is required to pinpoint the root cause of this discrepancy.
Problem Statement: The primary concern revolves around the error dialog box behavior. Despite displaying the dialog box and error component appropriately, encountering HTTP errors leads to inconsistencies in dialog functionality. Here is an overview of my error dialog component...
import { Component, Inject, OnInit } from '@angular/core';
import { MAT_DIALOG_DATA, MatDialogRef } from '@angular/material';
// Component details omitted for brevity
To validate the error handling mechanism, I incorporated test buttons in the view...
<button (click)="throwError()">Error</button>
<button (click)="throwHttpError()">HTTP</button>
// Component methods for generating errors
Although client-side errors trigger the expected responses, HTTP errors lead to unexpected behavior within the error dialog component. Possible attributing factors such as zone-related issues or subscription inconsistencies warrant further investigation to rectify the issue.