Wasp•2mo ago

after updating the user object i want to manually invalidate the user

after updating the user object i want to manually invalidate the user so that the next time useAuth() is called it refetches the new user object from the server

10 Replies

kapa.ai•2mo ago

Hi @Captain Incredible. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- Wasp provides automatic cache invalidation for queries based on entities: if an Action and a Query both use the same Entity (e.g., User), then after the Action is executed, the cache for that Query is invalidated and it will refetch the next time it is used. This means that if your update action is declared as using the User entity, Wasp will automatically invalidate queries that also use User, such as the one behind useAuth(), and refetch the user object from the server the next time it is called. If you need more granular or manual control, Wasp currently recommends using the mechanisms provided by react-query directly, since manual cache invalidation is not yet fully exposed in Wasp’s API. For now, the only natively supported manual cache invalidation in Wasp is through optimistic updates using the useAction hook. For other cases, you would need to rely on react-query’s cache invalidation methods, but this requires working outside of Wasp’s abstractions for now Cache Invalidation in Actions. In summary: if your update action and useAuth() both use the User entity, Wasp should handle invalidation for you automatically. If you need to manually invalidate, you’ll need to use react-query’s API directly until Wasp exposes more direct support. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @Captain Incredible, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

Captain IncredibleOP•2mo ago

the problem is i'm updating the user through an api @kapa.ai the problem might be that i'm updating the user through an api

kapa.ai•2mo ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- If you are updating the user through a custom API (not a Wasp Action), Wasp's automatic entity-based cache invalidation will not be triggered. This is because Wasp only tracks changes made through its own Actions that declare the affected entities. As a result, queries like useAuth() will not automatically refetch the updated user object after your API call. To handle this, you need to manually invalidate or refetch the relevant queries. Wasp currently does not provide a built-in way to manually invalidate queries outside of its Action system. However, you can use react-query's API directly for manual cache invalidation. You can obtain the query cache key from the generated client operation (e.g., getTasks.queryCacheKey) and use react-query's methods to invalidate or refetch the query after your API call Advanced usage of useAction and manual cache updates. In summary:
- If you update the user via a custom API, Wasp will not automatically invalidate the cache. - You need to use react-query's cache invalidation methods directly, using the query cache key from Wasp's generated client operations. Wasp may provide more direct support for this in the future, but for now, this is the recommended approach. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @Captain Incredible, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

Captain IncredibleOP•2mo ago

@kapa.ai how do i do this for the /auth/me query?

kapa.ai•2mo ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- To manually invalidate the /auth/me query (which is used by useAuth()) after updating the user through a custom API, you need to use react-query's cache invalidation methods directly. Wasp does not currently provide a built-in way to manually invalidate queries outside of its Action system, but you can access the query cache key and use react-query for this purpose. Here’s how you can do it: 1. Get the query cache key for the auth query:
Wasp exposes the cache key for each query via the queryCacheKey property on the generated client operation. For example:

   import { getMe } from 'wasp/client/operations'

   const queryKey = getMe.queryCacheKey

   import { getMe } from 'wasp/client/operations'

   const queryKey = getMe.queryCacheKey

2. Use react-query's QueryClient to invalidate the query:
You can import and use the QueryClient from react-query to invalidate the cache for the /auth/me query:

   import { QueryClient } from '@tanstack/react-query'
   import { getMe } from 'wasp/client/operations'

   const queryClient = new QueryClient()
   queryClient.invalidateQueries(getMe.queryCacheKey)

   import { QueryClient } from '@tanstack/react-query'
   import { getMe } from 'wasp/client/operations'

   const queryClient = new QueryClient()
   queryClient.invalidateQueries(getMe.queryCacheKey)

This will mark the /auth/me query as stale, so the next time useAuth() is called, it will refetch the user object from the server. Note:
You need to ensure you are using the same QueryClient instance as the rest of your app. In most React apps, you can get the QueryClient via the context or a hook, rather than creating a new instance. For more details, see the Wasp documentation on advanced usage and cache keys. If you need to do this in a React component, you can use the useQueryClient hook from react-query:

import { useQueryClient } from '@tanstack/react-query'
import { getMe } from 'wasp/client/operations'

const queryClient = useQueryClient()
queryClient.invalidateQueries(getMe.queryCacheKey)

import { useQueryClient } from '@tanstack/react-query'
import { getMe } from 'wasp/client/operations'

const queryClient = useQueryClient()
queryClient.invalidateQueries(getMe.queryCacheKey)

This approach is currently the recommended way to manually invalidate the /auth/me query in Wasp when updating the user outside of Wasp Actions. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @Captain Incredible, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

Captain IncredibleOP•2mo ago

will that invalidate the right clients queries? @kapa.ai will that invalidate the queries for the queryclient wasp uses for auth?

kapa.ai•2mo ago

Let me check the knowledge base for you again. One moment! :books: ---------------------- I'm sorry, but the knowledge sources do not explicitly state how to access the same QueryClient instance that Wasp uses internally for auth or other queries. The documentation does confirm that Wasp uses react-query under the hood and that you can use react-query's cache invalidation methods if you access the correct query cache key Advanced usage of useAction and manual cache updates. However, it does not specify how to ensure you are using the exact same QueryClient instance as Wasp. If you use the useQueryClient hook from react-query within your React components, it is likely (but not guaranteed by the docs) that you are interacting with the same QueryClient instance, since Wasp integrates react-query at the app level. But again, this is not explicitly confirmed in the provided documentation. In summary:
- The knowledge sources do not confirm whether manually creating a new QueryClient instance will affect Wasp's internal queries. - Using useQueryClient inside a React component is likely the correct approach, but this is not explicitly documented by Wasp. If you need certainty, you may want to check Wasp's source code or ask the Wasp team for clarification. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @Captain Incredible, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

miho•2mo ago

@Captain Incredible let me know if you need a human's help here

Captain IncredibleOP•2mo ago

I just created a route that does nothing other than get called to invalidate the user entity. This won't be an issue for me. But I might run into something similar where I'll need to invalidate on mobile later. Can I call actions on mobile? @miho I though I always reading somewhere that I can actually call actions on mobile. But I'm not sure if it's recommended

miho•2mo ago

When out way on mobile - do you mean mobile verison of your web client?

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after updating the user object i want to manually invalidate the user

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