Angular 17 Router Guards: A Concise Guide
In Angular 17, router guards have evolved to provide a more concise and modern approach, leveraging functional programming introduced in Angular v14.2. These guards facilitate fine-grained control over navigation, authentication, data resolution, and lazy loading of modules. Let's explore the six different router guards available in Angular 17:
1. CanActivateFn
- Purpose: Determines if a route can be activated.
- Logic: Returns a boolean, UrlTree, or an Observable/Promise resolving to one of these.
true: Navigation proceeds.false: Navigation is blocked.UrlTree: Redirection to a different route.
- Use Cases:
- Authentication checks (redirect to login if not authorized)
- Role-based authorization
- Prevent access to partially completed forms