How to invalidate a query
I have a query, and on button click it uploads a file to s3, now i need to invalid the query so it auto-runs and displays the file(s) back.
6 Replies
Hi @DDank. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:
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In Wasp, you can invalidate a query's cache whenever an action that uses the same entity is executed. This is done automatically by Wasp and is known as automatic Entity-based Query cache invalidation.
For example, if you have an action that uploads a file to S3 and a query that fetches the list of files, both using the same entity (let's say
File), executing the upload action will cause the cached result of the fetch query to become outdated. In response, Wasp will invalidate it, causing the fetch query to refetch data from the server and update it.
Here is an example of how you might define your query and action:
In this case, whenever uploadFile is executed, the cache for getFiles will be invalidated and the query will be re-run to fetch the updated list of files.
If you need more control over cache invalidation, you can use the mechanisms provided by react-query, which is the library Wasp uses for query management. However, this can quickly become complex and error-prone.
For more information, you can refer to the Wasp documentation on cache invalidation (https://wasp-lang.dev/docs/data-model/operations/actions#cache-invalidation).
Please note that this is a general guide and the exact implementation may vary depending on your specific use case and the structure of your Wasp project.
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Sorry @DDank, 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?ah its automatic
wait no
how to get queryCacheKey
@kapa.ai how to get queryCacheKey
Let me check the knowledge base for you. One moment! :books:
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In Wasp, you can obtain the
queryCacheKey from any query by accessing the queryCacheKey property on the query. Here is an example of how you can do this:
This queryCacheKey is used internally by Wasp, but it's also available to you if you need more control over your queries, such as when you want to use react-query's useMutation hook and work directly with their low-level API.
For more information, you can refer to the Wasp documentation on advanced usage of actions (https://wasp-lang.dev/docs/data-model/operations/actions#advanced-usage).
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Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
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Sorry @DDank, 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?Hey @DDank,
If you're action and your query use the same entity, then the invalidation is automatic.
If they don't, then yes, you should do it manually after getting the query cache key.
Our current docs aren't correct for the current version of the API (they will be in a couple of days when we release 0.14.0).
The bot gave you a correct answer for JS, but for TS, you need to cast the query function first:
After this, invalidate the Query using tanstack query: https://tanstack.com/query/latest/docs/reference/QueryClient#queryclientinvalidatequeries
Thanks @sodic indeed it was automatically been done on my entity.
Happy to hear it!