How do I implement routing guards in Vue.js?

How do I implement routing guards in Vue.js?

In Vue.js, routing guards are used to control access to routes. You can implement them using the beforeEach method in your router configuration.

Can you give me an example of a simple authentication guard?

Sure! Here's a basic example:

const router = new VueRouter({
  routes: [
    { path: '/protected', component: ProtectedComponent, meta: { requiresAuth: true } },
    // other routes
  ]
});

router.beforeEach((to, from, next) => {
  const isAuthenticated = // your logic to check authentication;
  if (to.matched.some(record => record.meta.requiresAuth) && !isAuthenticated) {
    next({ path: '/login' });
  } else {
    next();
  }
});

What if I want to add a loading spinner while checking authentication?

You can set a loading state before checking authentication and then hide it after the check is complete. Just make sure to manage the loading state properly in your component.

Thanks! Can I also use guards for route data fetching?

Yes, you can use beforeEnter guards for fetching data before entering a route. This allows you to ensure that the necessary data is available before rendering the component.