How do I create guards in Angular using the CLI?

How do I create guards in Angular using the CLI?

You can create guards in Angular using the CLI by running the command: ng generate guard guard-name. This will create a guard file and update your module accordingly.

What types of guards can I create?

You can create several types of guards, including CanActivate, CanDeactivate, Resolve, and CanLoad. Each serves a different purpose in route protection.

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';

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

  canActivate(
    next: ActivatedRouteSnapshot,
    state: RouterStateSnapshot): boolean {
    const isAuthenticated = // your logic here;
    if (!isAuthenticated) {
      this.router.navigate(['/login']);
      return false;
    }
    return true;
  }
}

How do I test if my guard is working?

You can test your guard by trying to navigate to a protected route. If the guard is working, it should either allow or deny access based on your authentication logic.