How do I implement advanced routing guards in Angular?

How do I implement advanced routing guards in Angular?

To implement advanced routing guards in Angular, you can create a guard service that implements the CanActivate interface.

What are the different types of routing guards available?

Angular provides several types of routing guards: CanActivate, CanDeactivate, Resolve, CanLoad, and CanActivateChild.

Can you give me an example of a CanActivate guard?

Sure! A CanActivate guard checks if a user is authenticated before allowing access to a route. You can implement it like this:

import { Injectable } from '@angular/core';
import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot, Router } from '@angular/router';
import { AuthService } from './auth.service';

@Injectable({ providedIn: 'root' })
export class AuthGuard implements CanActivate {
  constructor(private authService: AuthService, private router: Router) {}

  canActivate(
    next: ActivatedRouteSnapshot,
    state: RouterStateSnapshot
  ): boolean {
    if (this.authService.isLoggedIn()) {
      return true;
    }
    this.router.navigate(['/login']);
    return false;
  }
}

How do I test my routing guards?

You can test routing guards by using Angular's testing utilities. Create a test suite that mocks the router and auth service to simulate different scenarios.