Nuxt•4w ago

SSR asyncData and CRUD operations

Hey I have had some weird issues with useLazyAsyncData SSR only happens. like when when i have a [id].vue page. like when im try diffrent ids to fetch something, the old data is still there. I would like to fully understand how to manage lazyAsyncData to do stuff for CRUD actions. like i didnt know that i cant declare a ref from top then setting it inside asyncData. ================= How can I fully understand what is going on and whats the best way to handle it? If there are any resources for addressing CRUD stuff and ssr asyncData tips that would be great. Also if there are any bigger project with full CRUD and ssr operation open sourced is very helpful (how can i find project made with nuxt for understanding things better)

2 Replies

kapa.ai•4w ago

Hi @Neon. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- To address your questions about SSR, asyncData, and CRUD operations in Nuxt, let's break down the key points: 1. Regarding the issue with useLazyAsyncData and old data persisting: This behavior is related to how Nuxt handles caching and keys for async data. To ensure fresh data is fetched for different IDs, you should include the ID in the key for useLazyAsyncData. Here's an example:

   <script setup>
   const route = useRoute()
   const { data } = await useLazyAsyncData(
     `item-${route.params.id}`,
     () => $fetch(`/api/items/${route.params.id}`)
   )
   </script>

   <script setup>
   const route = useRoute()
   const { data } = await useLazyAsyncData(
     `item-${route.params.id}`,
     () => $fetch(`/api/items/${route.params.id}`)
   )
   </script>

By including the ID in the key, you ensure that each unique ID will trigger a new data fetch Docs > Getting Started > Data Fetching > Keys (https://nuxt.com/docs/getting-started/data-fetching#keys). 2. For managing useLazyAsyncData with CRUD operations: - For read operations, use useLazyAsyncData or useFetch as shown above. - For create, update, and delete operations, you can use $fetch directly in methods, and then refresh the data using refreshNuxtData. Here's a basic example:

   <script setup>
   const { data, refresh } = await useLazyAsyncData('items', () => $fetch('/api/items'))

   const addItem = async (newItem) => {
     await $fetch('/api/items', { method: 'POST', body: newItem })
     await refresh()
   }
   </script>

   <script setup>
   const { data, refresh } = await useLazyAsyncData('items', () => $fetch('/api/items'))

   const addItem = async (newItem) => {
     await $fetch('/api/items', { method: 'POST', body: newItem })
     await refresh()
   }
   </script>

Docs > API > Utils > refreshNuxtData > Refresh Specific Data (https://nuxt.com/docs/api/utils/refresh-nuxt-data#refresh-specific-data) 3. Regarding declaring refs: It's true that you can't declare a ref at the top level and then set it inside useAsyncData. Instead, use the data property returned by useAsyncData or useLazyAsyncData. This ensures proper SSR handling Docs > API > Composables > useLazyAsyncData (https://nuxt.com/docs/api/composables/use-lazy-async-data). To fully understand and handle these concepts: 1. Study the Nuxt documentation thoroughly, especially the sections on Data Fetching (https://nuxt.com/docs/getting-started/data-fetching) and State Management (https://nuxt.com/docs/getting-started/state-management). 2. Practice building small projects that implement CRUD operations using Nuxt's data fetching composables. 3. Watch tutorial videos, such as those by Alexander Lichter mentioned in the docs, which explain concepts like useState and sharedPrerenderData Docs > Getting Started > State Management (https://nuxt.com/docs/getting-started/state-management). 4. For open-source Nuxt projects with CRUD operations, you can search GitHub for repositories using Nuxt and filter for those with API integrations. However, I don't have specific project recommendations from the provided knowledge sources. Remember to always use unique keys for your async data calls, especially when dealing with dynamic routes or IDs. This will help ensure that you're always working with fresh data in your SSR context. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•4w ago

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SSR asyncData and CRUD operations