Nuxt•4d ago

watching useNuxtData

Hi folks! I have a question: Can I watch changes in useNuxtData? It seems that after fetching with asyncData and storing the results, I can't access the cached data immediately in another component. Using a timeouting (nextTick) gives me the expected result, but watching does not. Anyone?

2 Replies

kapa.ai•4d ago

Hi @lukasborawski. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- Based on the knowledge sources provided, it appears that directly watching useNuxtData is not a standard feature. However, there are a few important points to consider regarding your question: 1. Synchronization: According to the GitHub pull request #22277, there was an issue with synchronization between useNuxtData and useAsyncData. This PR aimed to synchronize the data value of these two composables, which might have addressed some of the immediate access issues you're experiencing. 2. Reactive Reference: The Nuxt documentation on useNuxtData states that the data returned by useNuxtData is a reactive reference that automatically updates if the cached data changes. This suggests that you should be able to access changes without explicitly watching. 3. Alternative Approach: Instead of trying to watch useNuxtData directly, you might consider using the watch option in useAsyncData or useFetch to react to changes in your data. The Nuxt documentation on useAsyncData provides an example of how to use the watch option. Here's an example of how you might use the watch option:

const { data } = await useAsyncData(
  'someKey',
  () => fetchSomeData(),
  {
    watch: [someReactiveValue]
  }
)

const { data } = await useAsyncData(
  'someKey',
  () => fetchSomeData(),
  {
    watch: [someReactiveValue]
  }
)

This approach would allow you to re-fetch data when someReactiveValue changes, which could then update the cached data accessible via useNuxtData. If you're still experiencing issues with immediate access to cached data in another component, it might be worth investigating if there are any timing issues in your component lifecycle or considering using nextTick to ensure the DOM has updated before accessing the data. Remember, the behavior of these composables can sometimes change between Nuxt versions, so make sure you're referring to documentation that matches your Nuxt version. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•4d ago

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watching useNuxtData

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