How do I implement route guards in Angular using Angular CLI?

How do I implement route guards in Angular using Angular CLI?

To implement route guards in Angular, you can use the Angular CLI to generate a guard. Use the command: ng generate guard guard-name.

What types of route guards are available in Angular?

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

Can you give me an example of a CanActivate guard?

Sure! A CanActivate guard checks if a user is allowed to access 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 isLoggedIn = // your logic to check if user is logged in;
    if (!isLoggedIn) {
      this.router.navigate(['/login']);
      return false;
    }
    return true;
  }
}

How do I apply the guard to a route?

You can apply the guard in your routing module like this:

const routes: Routes = [
  { path: 'protected', component: ProtectedComponent, canActivate: [AuthGuard] }
];