Can I use useAsyncData for user interactions?
I'm working with a CMS or a third-party service that provides its own query layer. According to the documentation, I should use
useAsyncData for data fetching.
However, I also want to fetch data in response to user interactions, such as submitting a form or clicking a button.
In these cases, should I still use $fetch, or is it appropriate to use useAsyncData as well?2 Replies
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You should use $fetch for user interactions such as submitting a form or clicking a button, not useAsyncData.
According to the Nuxt documentation and community guidance, useAsyncData (and useFetch) are designed to be called at the top level of a setup function, plugin, or route middleware. They are intended for fetching data needed to render the component, ensuring that data is fetched only once on the server and then transferred to the client to avoid double-fetching during hydration. This makes them ideal for initial data loading, especially when working with a CMS or third-party SDKs that provide their own query layer, as you mentioned.
However, for event-driven actions—like form submissions or button clicks—you should use $fetch directly inside your event handler. This is because composables like useAsyncData cannot be called inside event handlers or after the component is mounted. Attempting to do so will result in warnings or errors, and is not the intended usage pattern. $fetch is the recommended approach for these cases, as it allows you to make HTTP requests in response to user actions without the constraints of composable lifecycle rules. This is clearly stated in both the official documentation and community answers:
When making requests within an event handler in Nuxt, $fetch is the correct approach.Nuxt - Component is already mounted, please use $fetch instead
It is recommended to use $fetch for client-side interactions (event based) or combined with useAsyncData when fetching the initial component data.Docs > Getting-started > Data Fetching > Suspense So, for user interactions, use $fetch. Reserve useAsyncData for initial data fetching or when you need to leverage its SSR and caching benefits at the top level of your setup function. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
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