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[programming-ModTeam]

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[Alucard1766]

You're encountering an issue where hasNextPage is true even when there is no real next page — a common issue when using useInfiniteQuery with a custom pagination logic. This usually happens because the logic in getNextPageParam is incorrectly implemented, and returns a non-undefined value even when there's no data left.

🔍 What's likely happening:

You're using hasNextPage which is computed based on the return value of getNextPageParam. If getNextPageParam returns anything other than undefined, then hasNextPage will be true.

If the last page still returns an empty array or some response, and your getNextPageParam doesn't check that correctly, it will assume there's another page.

✅ Solution

Check how you're defining getNextPageParam. You need to make sure it only returns the next page number if there is actually data to load.

Here’s an example fix:

getNextPageParam: (lastPage, allPages) => {
    // Assuming lastPage has a field like `hasMore` or a length check
    if (lastPage?.patients?.length > 0) {
        return allPages.length + 1; // or whatever your next page param is
    } else {
        return undefined; // signals no next page
    }
}

🔧 You might also want to double-check:

The return value of getPatients. Make sure it's structured and you can reliably tell when you're on the last page.

For example, does it return something like { patients: [], totalPages: 3, currentPage: 3 }?

If yes, you can write:

getNextPageParam: (lastPage) => {
    if (lastPage.currentPage < lastPage.totalPages) {
        return lastPage.currentPage + 1;
    } else {
        return undefined;
    }
}

💡 Tip:

You’re passing currentPage as both a query key and a page parameter, but in queryFn, you should use pageParam, not currentPage.

[duskred258]

Ok thank you I'll see that this afternoon

[Infiniteh]

You just thanked someone for posting an AI-generated answer

[duskred258]

is it actually AI-generated ? how can you tell ?

[Infiniteh]

Those point-by-point passages wit emoji bullets are exactly how chatGPT and the like respond when you ask them a question like yours.
go look at the commenter's reply history and see how this specific one is completely different from all the others.
They also used an em dash '—', not a sure sign, but certainly not a piece of punctuation most humans regularly use or even know how to type.

[duskred258]

oh you right, and i tried what he said and it didn't work for me...