Upgraded Router Guards in v15: A Quick Look

Functional router guards in v15 is a feature that allows developers to define guard functions directly in the route configuration, making it easier to protect certain routes from unauthorized access. In this tutorial, we will explore how to use functional router guards in v15 of a popular routing library.

Step 1: Upgrade to v15
First and foremost, make sure you are using v15 of the routing library in which functional router guards are supported. If you are currently using an older version, you may need to update your dependencies to the latest version.

Step 2: Define your guard function
Next, you will need to define a guard function that will be used to protect your routes. This guard function should return a boolean value indicating whether the user is authorized to access the route. Here is an example of a simple guard function that checks if the user is authenticated:

const isAuthenticated = () => {
  // Check if the user is authenticated
  return true; // For demonstration purposes, always return true
};

Step 3: Implement the guard in your route configuration
Now that you have defined your guard function, you can use it in your route configuration to protect certain routes. Here is an example of how you can implement the guard function in your route configuration:

import { createRouter, createWebHistory } from 'vue-router';

const router = createRouter({
  history: createWebHistory(),
  routes: [
    {
      path: '/',
      component: Home,
    },
    {
      path: '/dashboard',
      component: Dashboard,
      beforeEnter: (to, from) => {
        if (isAuthenticated()) {
          return true;
        } else {
          return { path: '/login' };
        }
      },
    },
    {
      path: '/login',
      component: Login,
    },
  ],
});

export default router;

In this example, the beforeEnter guard is used to prevent unauthorized users from accessing the /dashboard route. If the user is authenticated, the guard function will return true, allowing the user to access the route. Otherwise, the guard function will return a redirect object, sending the user to the login page.

Step 4: Test your guard function
Finally, you should test your guard function to ensure that it is working as expected. You can do this by navigating to the protected route in your application and verifying that the guard function is correctly preventing unauthorized access.

In conclusion, functional router guards in v15 of a routing library are a powerful feature that allows developers to protect certain routes from unauthorized access. By defining guard functions directly in the route configuration, developers can easily implement authentication and authorization logic in their applications. By following the steps outlined in this tutorial, you can start using functional router guards in your own applications and enhance the security of your routes.