Nuxt•5mo ago

Nuxt pro Portfolio issue - About

Hi all, I've been playing around with the Nuxt Pro Portfolio template locally, and noticed with a fresh pull when I navigate to the About page, the about content is not pulled in from about.yml, but if I refresh the page the content field is loaded/displayed. Has anyone else experienced this, and how can i ensure the content field is field is passed in on first load. Thanks in advance 🙏

11 Replies

kapa.ai•5mo ago

Hi @tronik. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- This issue—where content from about.yml (or similar content files) is only loaded after a full page refresh, but not on client-side navigation—typically relates to how Nuxt handles data fetching and hydration during navigation. Based on the knowledge sources, here are some key points and possible solutions: 1. Data Fetching on Client-side Navigation
Nuxt uses composables like useFetch, useAsyncData, or useContent to fetch data. On client-side navigation, these composables may not always re-fetch or hydrate data as expected, especially if the data is only fetched on the server or if there are caching issues. This can result in missing content until a full reload occurs. 2. Hydration and Caching Behavior
There have been changes in Nuxt 3's data caching behavior. As of Nuxt 3.17, the default is to purge cached data on navigation, which means data fetched with useAsyncData/useFetch is disposed of when you leave the page. When you return, it fetches again, but if your fetching logic is not set up to run on client navigation, you may see empty or stale data. You can disable this behavior by setting the experimental purgeCacheData option to false, but this is not generally recommended due to potential memory leaks. Instead, using a global state (with useState or Pinia) to persist data across navigations is suggested for more robust solutions [Github Issue: Data isn't cached in useLazyFetch]. 3. Correct Usage of Data Fetching Composables
Ensure that your data fetching composable is reactive and properly set up to respond to route changes. For example, if you use useRoute() to determine which content to load, you should watch for changes and re-fetch as needed. Also, make sure to access .value when using refs returned by composables like useContent [How to Access markdown front matter properties from Nuxt 3 script]. 4. Example Solution
If you are using useContent or a similar composable, make sure you are accessing the .value property and, if necessary, watching the route for changes:

   <script setup lang="ts">
   const route = useRoute()
   const { data: page } = await useAsyncData(route.path, () => queryCollection('content').path(route.path).first())

   // If you need to react to route changes:
   watch(() => route.path, async (newPath) => {
     page.value = await queryCollection('content').path(newPath).first()
   })
   </script>

   <script setup lang="ts">
   const route = useRoute()
   const { data: page } = await useAsyncData(route.path, () => queryCollection('content').path(route.path).first())

   // If you need to react to route changes:
   watch(() => route.path, async (newPath) => {
     page.value = await queryCollection('content').path(newPath).first()
   })
   </script>

And in your template:

   <template>
     <ContentRenderer v-if="page" :value="page" />
   </template>

   <template>
     <ContentRenderer v-if="page" :value="page" />
   </template>

5. Summary
- Make sure your data fetching logic is reactive to route changes. - Use .value when accessing data from refs. - Consider using a global state if you want to persist data across navigations. - Be aware of Nuxt's caching and hydration behavior, especially after Nuxt 3.17 [Github Issue: Data isn't cached in useLazyFetch]. If you follow these guidelines and still experience issues, please check your specific data fetching implementation and ensure it is compatible with Nuxt's navigation and hydration lifecycle. If you need more targeted help, sharing your actual fetching code would be helpful. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•5mo ago

<@282407811705470976> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

tronikOP•5mo ago

This did not solve the issue - please note no changes have been made from the pro template latest push @kapa.ai @kapa.ai it works fine in production build, potentially a local dev issue ?

kapa.ai•5mo ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- Yes, based on the information in the knowledge sources, this kind of issue—where content is not loaded correctly on client-side navigation in development but works fine in production—can indeed be a local development issue. Several factors in Nuxt's development environment, such as hot module replacement, caching, or differences in how data fetching is handled between dev and production, can cause such inconsistencies. For example, Nuxt Content's hot reload and watcher features are specifically designed for development and are not included in production builds. Configuration for these features can be found in the content.watch section of your nuxt.config.ts file. If hot reload or the watcher is misconfigured or disabled, it could lead to stale or missing content during development, while production remains unaffected because it uses a static build or server-rendered output that doesn't rely on these dev-only features. You can adjust these settings as follows:

export default defineNuxtConfig({
  content: {
    watch: {
      enabled: true,
      port: 4000,
      showURL: true
    }
  }
})

export default defineNuxtConfig({
  content: {
    watch: {
      enabled: true,
      port: 4000,
      showURL: true
    }
  }
})

Nuxt Content Watch Configuration If the issue only appears in development and not in production, it's likely related to these dev-specific behaviors. If you continue to experience problems, try restarting your dev server or reviewing your watcher settings. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•5mo ago

<@282407811705470976> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

tronikOP•5mo ago

What can I do to the watcher settings to ensure it's the same as prod What can I do to the watcher settings to ensure it's the same as prod @kapa.ai

kapa.ai•5mo ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- In Nuxt, the watcher settings are specifically for development and are not included or active in production builds. The watcher (configured via content.watch or the global watch/watchers options) enables hot reload and live updates when you edit content or source files during development. In production, Nuxt serves the built output and does not watch for file changes, so these settings have no effect. From the knowledge sources:

The watcher is a development feature and will not be included in production.
— Nuxt Content Watch Configuration

Therefore, you cannot make the watcher behave "the same as prod" because in production, the watcher is simply not used. If you want your development environment to behave more like production, you can disable the watcher:

export default defineNuxtConfig({
  content: {
    watch: {
      enabled: false
    }
  }
})

export default defineNuxtConfig({
  content: {
    watch: {
      enabled: false
    }
  }
})

But this will just turn off hot reload in development—it will not make development and production identical, since production never uses the watcher. Summary:
- The watcher is only for development. - In production, no watcher is active. - Disabling the watcher in dev (enabled: false) will make it closer to production, but you lose hot reload. If you are experiencing differences between dev and prod, the cause is likely not the watcher itself, but other differences in how Nuxt handles data fetching, hydration, or caching between environments. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•5mo ago

<@282407811705470976> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

tronikOP•5mo ago

How can I ensure hydration is the same locally vs prod @kapa.ai

kapa.ai•5mo ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- To ensure hydration behaves the same locally and in production with Nuxt, you should: 1. Use SSR-friendly Data Fetching
Always use SSR-friendly composables like useAsyncData or useFetch for data that needs to be available during hydration. This ensures the data fetched on the server is reused on the client, preventing hydration mismatches and repeated requests. Avoid fetching data only on the client or using non-SSR-friendly methods, as this can cause differences between local and production hydration behavior Nuxt Lifecycle: Hydration. 2. Maintain Data Consistency
Make sure the data rendered on the server matches what the client expects. Any differences can cause hydration errors or mismatches. This is especially important if you use dynamic content or API calls. 3. Test with nuxt preview
For local production-like testing, use the nuxt preview command after building your project. This command loads your .env file and runs the built server, closely simulating the production environment. This helps catch hydration issues that might not appear in nuxt dev .env and Production Preview. 4. Be Aware of Experimental Features
If you use features like delayed/lazy hydration, ensure you are using them according to best practices and understand their caveats. For example, only one hydration strategy can be used per lazy component, and these features may behave differently in dev vs. prod if not configured properly Delayed Hydration Strategies. 5. Restart Dev Server After Config Changes
If you change hydration-related settings or your nuxt.config.ts, always restart your dev server to ensure changes are applied Nuxt Content Studio Debug. Summary:
- Use SSR-friendly data fetching. - Keep server and client data consistent. - Test with nuxt preview for production-like hydration. - Follow best practices for any experimental hydration features. - Restart your dev server after config changes. If you follow these steps, hydration should behave consistently between your local and production environments. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•5mo ago

<@282407811705470976> Kapa.ai is still learning and improving, please let me know how I did by reacting below.

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Nuxt pro Portfolio issue - About

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