What is the most optimal location to retrieve data for authorized users in a Vue application?

Greetings! I am currently retrieving an array of posts from my express API in the Home.vue file, which is secured by route guards.

<script>
export default {
  created() {
    this.$store.dispatch('fetchPosts')
  }
}
</script>

The fetchPosts action looks like this:

async fetchPosts(context) {
  try {
    const res = await api.get('/posts', {
      headers: {
        Authorization: `Bearer ${localStorage.getItem('token')}`
      }
    })
    context.commit('SET_POSTS', res.data)
    context.commit('SET_ERROR', null)
  } catch(err) {
    console.log(err.response.data)
    context.commit('SET_ERROR', err.response.data)
  }
}

Within this action, a mutation is committed to set the posts object to res.data. I specifically want the fetchPosts function to only run when a user logs in, as there is a mutation that adds a post to the database and updates the posts state when a user adds a new post. However, when routing back to the home screen, the created() hook runs again, causing data to be re-fetched with each post request. The app still functions properly but could be optimized for efficiency. How can I enhance my application to resolve this issue?

Answer №1

Before making the API call, double check to ensure that the state is not already populated.
If it's empty, proceed with the API call; if not, refrain from making unnecessary requests.

Implementing guards in your application is crucial. Depending on the nature of your app and how you manage authenticated users, consider integrating a global middleware into your router. This will streamline your code, reduce errors, and minimize duplication.

For further insights, check out this informative article:

Your code looks solid otherwise!

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