Routing Guard is a feature that allows developers to control access to certain routes or parts of their application based on specific conditions. It provides a way to intercept navigation to a route and determine if the navigation should proceed or not.
This can be used to implement security measures, perform data retrieval or check user authorization before allowing access to certain routes.
Routing guards are implemented as services in Angular and are used with the RouterModule. Guards can be used to restrict access to a route entirely.AuthGuard is used to protect the routes from unauthorized access in angular.
How AuthGuard Works?
Auth guard provide lifecycle event called canActivate. The canActivate is like a constructor. It will be called before accessing the routes. The canActivate has to return true to access the page. If it returns false, we can not access the page. We can write our user authorization and authentication logic inside the canActivate function.
An AuthGuard is used to secure routes in your Angular application by controlling access to them based on certain conditions. With an AuthGuard, you can restrict access to certain parts of your application to only authenticated or authorized users.
Why AuthGuard ?
Preventing unauthorized access to certain routes: You can use an AuthGuard to check if a user is authenticated before allowing them to access a route. If the user is not authenticated, the guard can redirect them to the login page.
Implementing role-based access control: You can use an AuthGuard to check a user’s role and determine if they are authorized to access a particular route. For example, you might restrict access to an administrator page to only users with the “admin” role.
Protecting sensitive routes: You can use an AuthGuard to protect sensitive routes, such as a settings page or a dashboard, by checking if a user is authenticated and has the necessary permissions before allowing them to access the route.
Summary
An AuthGuard provides a flexible and powerful way to secure your Angular application by controlling access to certain routes based on conditions that you specify.
A routing guard in Angular is a class used to protect access to a route in a Angular application. It defines a set of methods that can be used to control the flow of navigation to a particular route. For example, a guard can be used to restrict access to a route based on certain conditions, such as whether a user is authenticated, or to prompt the user for confirmation before navigating away from a form. Guards can be implemented as services and can be added to a specific route by using the canActivate or canDeactivate property in the route configuration.