Vue's beforeRouteEnter hook patiently awaits for the child component to complete its request

My Vue app utilizes beforeRouteEnter to load data and prevent the undesirable "flash of unloaded content." Loading data on some pages is straightforward:

 async beforeRouteEnter(to, from, next) {
    const newestPosts = await getNewestPosts();
    next(vm => vm.posts = newestPosts);
}

However, I am facing difficulty in implementing this with data that is stored in child components of the page.

For instance, consider the following structure:

<search-page>
  <posts-list :query="$params.query">
  </posts-list>
</search-page>

The <posts-list> component handles all the logic for fetching posts. It is responsible for generating the "related posts" box, displaying posts on the main search page, or presenting them on a user's profile page. This encapsulation of both fetching and rendering logic is quite nifty.

I would like to be able to do something like this in my beforeRouteEnter:

 async beforeRouteEnter(to, from, next) {
    await this.$refs.postsList.finishedPromise;
    next();
}

Unfortunately, it seems that I will have to include all the fetching logic within the beforeRouteEnter function. This means duplicating the process for potentially every page, diminishing the usefulness of the <post-list> component. Is there any other viable solution? I am unsure if utilizing Vuex could solve this issue. While I understand how Vuex aids in managing state (e.g., "sidebar.open"), I am uncertain if it can assist in handling search results while allowing me to keep the fetching logic within the <post-list> component.

Answer №1

To efficiently retrieve the posts using data from $params.query, consider implementing a method to monitor your query prop within the posts-list component. When changes occur, the posts-list component can assess if fetching is required and execute this process asynchronously while displaying a loading placeholder such as a stylish skeleton loader, providing an appealing visual solution for empty states.

Instead of attempting to alter routing changes directly, focus on observing them through reactive techniques within the component that requires this information.

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