Partial matching of key in setQueryData

[denisborovikov]

Hi there,

I've just bumped into a weird behavior. I don't know if it's by design and expected.

Here's a minimal example https://codesandbox.io/s/sweet-goldwasser-62fhv?file=/src/App.js

We have three useQuery which creates three cache entities

• ["todo", { id: 1 }]
• ["todo", { id: 2 }]
• ["todo", { id: 3 }]

If you click on update cache button in runs a cache update with queryCache.setQueryData. Notice that id there is undefined. In this case, all three entities will be updated, because all of them are partially matched the given key.

So my question here - is partial matching by default is a feature or a bug? In my real code when I bumped into this was that I misspelled the name of the variable {id: data.AAA} instead of {id: data.BBB} and instead of updating the cache of the specific ID, all partially matched caches were updated (because data.AAA is undefined).

[tannerlinsley]

Partial matching is a feature that is baked into all of the queryCache functions that search the cache to find queries. though it may not make much sense for setQueryData, it does for things like refetchQueries.

The fact that this came by surprise to you is a good indicator that we should probably not make setQueryData a partial matching function.

[denisborovikov]

No, I don't, is it about the exact option?

[denisborovikov]

I think it would be better if you do it, I feel it can be pitfalls there.

[tannerlinsley]

I'll take care of it :)

[villesau]

How does it work now? I've spent a ton of time trying to understand how to do the partial match since that's what I essentially need most of the time. e.g we pull data in specific order, but we do not want to pass the order information to where we update individual items. This is not possible without partial matching.

[villesau]

There now seems to be setQueriesData function for partial matching.

[denisborovikov]

@tannerlinsley Hey, you're about to release v2 soon. Let me remind you about this topic. Did you change the partial matching queries?

[tannerlinsley]

I will fix set query data to be exact by default in the next release.

[YassienW]

Not sure if this is the right place to ask, but is there currently a way to partially match keys when calling setQueryData?

[TkDodo]

Have a look here: #2078 (comment)