N
Nuxt•2mo ago
Nisthar

How to pass data from plugins to server api endpoint in nuxt 3?

I have a module in my nuxt app. It uses a plugin to auto refresh tokens if its expired (both on client side and on server load). I need to extend this and after refreshing tokens, fetch the user data and pass it to the app's server api endpoints. How do i do that? I have tried adding middleware into the module. It seems like middlewares are good solution but it runs before the plugin. so it doesn't get the refreshed token to fetch the user. Does anyone have a solution to this issue?
9 Replies
kapa.ai
kapa.ai•2mo ago
Hi @Nisthar. 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 question about passing data from plugins to server API endpoints in Nuxt 3, there are a few approaches we can consider based on the available information. However, it's important to note that the exact solution may depend on the specific implementation details of your module and plugin. 1. Using useNuxtApp(): One approach is to use the useNuxtApp() composable to expose data from your plugin that can be accessed in your server API routes. Here's an example of how you might structure this: 
   // In your plugin
   export default defineNuxtPlugin((nuxtApp) => {
     // Your token refresh logic here
     // ...

     // Expose the user data through useNuxtApp
     return {
       provide: {
         userData: /* your user data here */
       }
     }
   })

   // In your server API endpoint
   export default defineEventHandler(async (event) => {
     const { $userData } = useNuxtApp()
     // Use $userData in your API logic
   })
   
   // In your plugin
   export default defineNuxtPlugin((nuxtApp) => {
     // Your token refresh logic here
     // ...

     // Expose the user data through useNuxtApp
     return {
       provide: {
         userData: /* your user data here */
       }
     }
   })

   // In your server API endpoint
   export default defineEventHandler(async (event) => {
     const { $userData } = useNuxtApp()
     // Use $userData in your API logic
   })
This approach is based on the pattern shown in the Custom $fetch example (https://nuxt.com/docs/guide/recipes/custom-usefetch#custom-fetch). 2. Using useCookie(): Another approach is to store the user data in a cookie after refreshing the token. This way, the data will be available in both client and server contexts: 
   // In your plugin
   const userCookie = useCookie('user')
   // After refreshing token and fetching user data
   userCookie.value = /* your user data */

   // In your server API endpoint
   export default defineEventHandler(async (event) => {
     const userCookie = useCookie('user')
     // Use userCookie.value in your API logic
   })
   
   // In your plugin
   const userCookie = useCookie('user')
   // After refreshing token and fetching user data
   userCookie.value = /* your user data */

   // In your server API endpoint
   export default defineEventHandler(async (event) => {
     const userCookie = useCookie('user')
     // Use userCookie.value in your API logic
   })
This approach is inspired by the solution mentioned in the Stack Overflow post about persisting state (https://stackoverflow.com/questions/77882887). 3. Using refreshCookie(): If you're storing the user data in a cookie, you can use the refreshCookie() utility to ensure the latest cookie value is available: 
   // In your plugin, after setting the cookie
   refreshCookie('user')

   // In your server API endpoint
   export default defineEventHandler(async (event) => {
     const userCookie = useCookie('user')
     refreshCookie('user')
     // Use userCookie.value in your API logic
   })
   
   // In your plugin, after setting the cookie
   refreshCookie('user')

   // In your server API endpoint
   export default defineEventHandler(async (event) => {
     const userCookie = useCookie('user')
     refreshCookie('user')
     // Use userCookie.value in your API logic
   })
This approach is based on the refreshCookie utility documentation (https://nuxt.com/docs/api/utils/refresh-cookie). Regarding your middleware issue, you're correct that middleware runs before plugins. To ensure that your middleware has access to the refreshed token and user data, you could consider using a plugin to set up the token refresh logic and store the user data, and then use middleware to check and use this data before reaching your API endpoints. Remember that when dealing with authentication and user data, it's crucial to implement proper security measures, especially when passing sensitive information between client and server. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------
kapa.ai
kapa.ai•2mo ago
<@155692068675518464> Kapa.ai is still learning and improving, please let me know how I did by reacting below.
Nisthar
NistharOP•2mo ago
  // In your plugin
   export default defineNuxtPlugin((nuxtApp) => {
     // Your token refresh logic here
     // ...

     // Expose the user data through useNuxtApp
     return {
       provide: {
         userData: /* your user data here */
       }
     }
   })

   // In your server API endpoint
   export default defineEventHandler(async (event) => {
     const { $userData } = useNuxtApp()
     // Use $userData in your API logic
   })
  // In your plugin
   export default defineNuxtPlugin((nuxtApp) => {
     // Your token refresh logic here
     // ...

     // Expose the user data through useNuxtApp
     return {
       provide: {
         userData: /* your user data here */
       }
     }
   })

   // In your server API endpoint
   export default defineEventHandler(async (event) => {
     const { $userData } = useNuxtApp()
     // Use $userData in your API logic
   })
Isn't this for providing the data globally throughout the whole app? does this work for each and every users? any ideas?
manniL
manniL•2mo ago
@Nisthar send it with the API request, e.g. encryped?
Nisthar
NistharOP•2mo ago
You mean from the client using a custom fetch ? Iam already sending the tokens via cookies from the client Only need to get the user data on the server and middleware is not working for it
manniL
manniL•2mo ago
@Nisthar yeah as a header or similar. if via cookie that's fine you can't update a value "from the client" w/o sending it via API
Nisthar
NistharOP•2mo ago
Yeah i am already sending the cookies from the client. But i am not getting the user data using the cookies on server. I will post the plugin code here: 
import { defineNuxtPlugin, useRuntimeConfig } from '#app'


export default defineNuxtPlugin(async (nuxtApp) => {
  
  const config = useRuntimeConfig();
  const { fetchUser } = useAuth();
  const { token, checkAutoRefresh } = useToken();
  const user = useUser();

  async function checkIfUserExists() {
    if (config.public.autoFetch) {
      if (!user.value && token.value) {
        await fetchUser();
      }
    }
  }

  // do the checks server-side, instead of using hook 'app:created', 
  // as this hook is not called on SSR=true (static generation)
  await checkAutoRefresh();
  await checkIfUserExists();

  nuxtApp.hook('page:start', async () => {
    if (import.meta.client) {
      await checkAutoRefresh();
      await checkIfUserExists();
    }
  })
})
import { defineNuxtPlugin, useRuntimeConfig } from '#app'


export default defineNuxtPlugin(async (nuxtApp) => {
  
  const config = useRuntimeConfig();
  const { fetchUser } = useAuth();
  const { token, checkAutoRefresh } = useToken();
  const user = useUser();

  async function checkIfUserExists() {
    if (config.public.autoFetch) {
      if (!user.value && token.value) {
        await fetchUser();
      }
    }
  }

  // do the checks server-side, instead of using hook 'app:created', 
  // as this hook is not called on SSR=true (static generation)
  await checkAutoRefresh();
  await checkIfUserExists();

  nuxtApp.hook('page:start', async () => {
    if (import.meta.client) {
      await checkAutoRefresh();
      await checkIfUserExists();
    }
  })
})
user is a state like this 
 export const useUser = (): Ref<User> =>
  useState<User>('current.user')
 export const useUser = (): Ref<User> =>
  useState<User>('current.user')
when i send requests using fetch from the client, this plugin won't get executed Right? @manniL
manniL
manniL•2mo ago
ahh!
manniL
manniL•2mo ago
https://www.youtube.com/watch?v=7vfwYaHtv3U
Alexander Lichter
YouTube
Passing Cookies with event.$fetch and useRequestFetch in Nuxt
Ever wondered why cookies are not passed correctly to subrequests - e.g. during SSR or when using Nitro/H3? Then this video is for you. Together we have a look how to pass all the important information, including event context and headers to further calls, eliminating different behavior on server and client. #nuxtjs #nuxt #vue #webdevelopment ...
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