Will updateQueryData update transformresponse data automatically?

[slamdunkYYY]

I have use transformResponse in my RTK query, like transformResponse: (response) => transformData(response). And inside the transformData, I just create a new object and return back.

const transformData = (data) => {
  return {
    ...data,
    allItems: [...data.checkedItems, ...data.uncheckedItems]
  }
}

the original data only has checkedItems and uncheckedItems.
When I use manual refresh cache, api.util.updateQueryData, I found the allItems cannot update automatically itself. I have to do another transfer manually too like

api.util.updateQueryData("getItemDetails", (details) => {
  const { allItems } = transformData(detail);
  details.allItems = allItems;
});

I want to confirm if I have to do the manually update for transformed data in transformResponse when manually cache refresh, or redux toolkit itself can update the transformResponse data when manually cache update?
If I have to use transformResponse and updateQueryData manually cache update, how can I connect them correctly?

[EskiMojo14]

transformResponse is only called when fetching. your updateQueryData call will receive the already transformed data from store, and can operate on it as it chooses.

[slamdunkYYY]

The fetching you mean is on the initial api call data, once I got the data from api, then transformResponse transfer the data then data is cached. So transformResponse is only during the api call, correct?
But updateQueryData works the cached data only, because it's not fetching anymore, it handles the cache, so transformResponse won't be triggered whenI do something on cache.
Is my understanding correct?

[EskiMojo14]

correct

[slamdunkYYY]

Thank you.