zenstackhq
[Bug] Optimistic updates and undefined in @zenstackhq/tanstack-query plug-in
Description and expected behavior
I'm using the optimistic update flag in my mutation useUpdate[model]({ optimisticUpdate: true }), and when I pass undefined to a field, it is getting stored in the cache - Prisma will ignore a field if it is set to undefined, so it won't update in the DB. This doesn't happen when the data is initially fetched from the server.
There is an easy workaround in this case, as I only have one field to update. I can just pass an empty object if my value is undefined.
Screenshots
query.data affected by the mutation logged to console:
Environment (please complete the following information):
- ZenStack version: 2.21.0
- Prisma version: 6.17.1
- Database type: Postgres (Neon)
Workaround: not passing undefined
This prevents any errors from occurring.
Hi @ellie-xpawn , I can't seem to reproduce the issue. Do you have a shareable project?
No, sorry. I forgot to mention earlier that ActivityProgress is extended by other models (ie. TestActivityProgress) - maybe the issue is related to polymorphism?