What is CanActivateChild() Method in angular routes with details understanding and examples

Hello Guys,

In this blog we are going to learn about child routes using auth guard with CanActivateChild() with details understanding and examples.

CanActivateChild() allows you to guard child routes in a similar way to CanActivate for guarding individual routes.

CanActivateChild() is basically used to protect child routes inside the application from unauthorized users. This means if users don't have access then they can't access child routes.

When every you creating canActivateChild, in that we are creating guards that execute before access of child routes.

CanActivateChild() method normally takes two parameters : route and state. The route parameter represents the child route being activated, while the state parameter represents the current router state. The CanActivateChild() method must return a boolean value indicating whether the user has permission to access the child method.

For Examples :

Authenticating users with a service named authService, our guard, "AuthGuard," uses CanActivateChild to check if the user is authenticated. This method, canActivateChild, will pass if the user is authenticated, allowing access to the child route. If the user is not authenticated, the method will utilize a UrlTree object to redirect the user to the login page.

To implement AuthGuard in safeguarding child routes, you need to include it into the canActivateChild feature of its parent route.

Adding AuthGuard to the products route's canActivateChild property ensures that only authenticated users will be able to access the child route. The AuthGuard is executed before the activation of ProductDetailComponent in the example given.

Implementing CanActivateChild in your Angular app is a smart choice since it grants you the ability to guard your child routes and restrict unauthorized users from accessing them. This interface has a lot of power and can protect your application and your users' data. By creating guards with CanActivateChild, you can rest easy knowing that only authorized individuals will have access to protected areas.

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