How can I fetch async data with Vue 3 Router?

How can I fetch async data with Vue 3 Router?

You can use the beforeEnter navigation guard to fetch data before the route is entered. Would you like an example?

Yes, please provide an example of how to implement that.

Sure! In your router configuration, you can do something like this:

const router = new VueRouter({
  routes: [
    {
      path: '/user/:id',
      component: User,
      beforeEnter: (to, from, next) => {
        fetchUserData(to.params.id).then(userData => {
          to.params.userData = userData;
          next();
        });
      }
    }
  ]
});

This way, the user data is fetched before entering the route.

What if I want to handle errors during the data fetching?

You can handle errors by using a catch block in your promise. For example:

beforeEnter: (to, from, next) => {
  fetchUserData(to.params.id)
    .then(userData => {
      to.params.userData = userData;
      next();
    })
    .catch(error => {
      console.error('Error fetching user data:', error);
      next(false); // Cancel navigation
    });
}