Comments (3)
Hi @Fronix !
I've created an example for this use case: https://codesandbox.io/s/swr-playground-3843q
Still triggers the fetch when the value is null
The entire key
needs to be null
, e.g.:
useSWR(value ? `/api/search/autocomplete/${entity}/?query=${value}` : null, ...)
the result is sometimes undefined when deleting a character
That's because the key
has changed, so the data for that new key will be undefined
until we get the data.
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You could fetch data based on a dynamic value, check dependant fetching in the README.
If you have a state with your typed value you could:
const [value, setValue] = useState(null) // the null here will prevent SWR to fetch until the user typed something
const { data: results } = useSWR(() => `/api/search?query=${value}`, fetcher)
Now every time the value
state change SWR will fetch the /api/search
with a new query, if the user delete a character of the value (e.g. from movies
to movie
) since SWR already fetched that it will show the stale results immediately.
And you could use your results
to fill the autocomplete suggestions.
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Interesting!
I tried this just now
const [value, setValue] = useState<null | string>(null);
const { data: results } = useSWR(
() => `/api/search/autocomplete/${entity}/?query=${value}`,
(url: string) => fetch(url).then(_ => _.json())
);
Still triggers the fetch when the value is null also the result is sometimes undefined when deleting a character which also is a bit weird? Might be some missing options?
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Related Issues (20)
- Introducing SWRConfig causes re-rendering HOT 1
- mutate() never calls onSuccess nor onError HOT 1
- Wrong key serialization HOT 5
- React Hook Order Error with Multiple useSWR Hooks in Next.js with Suspense HOT 2
- useSWRInfinite with types
- Revalidate useSWR by considering only the first argument when using multiple arguments. HOT 1
- focusThrottleInterval is not honoured for the first refresh on focus after mount HOT 3
- auto retry has timer issues with mutate
- `useSWR` in UI KIT library not using cache from consumer app HOT 7
- isLoading always typed as false when using fallbackData
- useSWR not making the fetch request
- useSWR deduped by mistake after cache clear HOT 1
- useSWRInfinite continually fetches the first page (no caching observed) HOT 3
- Type mismatch on SWR Configuration
- Got "None of the selected packages has a "watch" script" when pnpm watch run HOT 2
- useSWR seems to trigger suspense boundaries even if not using suspense mode HOT 5
- Type error when overriding global fetcher function with null HOT 3
- SWR mutate does not trigger even if I have a hook mounted with the same key HOT 1
- fallback doesn't work with `useSWRInfinite` and next app router HOT 1
- Type error when fallback option with undefined.
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