What are some common usage scenarios for Angular route guards?

What are some common usage scenarios for Angular route guards?

Angular route guards are used to control access to routes based on certain conditions. Common scenarios include protecting routes from unauthorized access, preventing users from navigating away from unsaved changes, and conditionally loading routes based on user roles.

Can you give me an example of protecting a route?

Sure! For instance, you can use an AuthGuard to check if a user is logged in before allowing access to a dashboard route. If the user is not authenticated, they can be redirected to a login page.

What about preventing navigation from a route?

You can implement a CanDeactivate guard to prompt users to confirm if they want to leave a route with unsaved changes, like a form. This helps prevent accidental data loss.

Are there any performance considerations with route guards?

Yes, route guards can impact performance if they involve heavy computations or API calls. It's best to keep them lightweight and cache results when possible.