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=${value}`, fetcher)
Now every time the value
state change SWR will fetch the /api/search
with a new query, if the user delete a character of the value (e.g. from movies
to movie
) since SWR already fetched that it will show the stale results immediately.
And you could use your results
to fill the autocomplete suggestions.
from swr.
Interesting!
I tried this just now
const [value, setValue] = useState<null | string>(null);
const { data: results } = useSWR(
() => `/api/search/autocomplete/${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)
- Cache flaw: mutate of cache keys is ignored when no consuming hook is mounted
- Bound Mutate does not update state but useSWRMutation does HOT 2
- TYPESCRIPT: Axios fetcher(METHOD POST) + NextJs SSR = URL Malformed HOT 1
- Infinite does not revalidate all pages when the zeroth one changes HOT 2
- Conditional rendering does not have correct type
- Bound/global mutate functions do not mutate remote data HOT 3
- bug: type error on updating cache with bound mutate HOT 1
- RSC Example doesn't work HOT 6
- onDiscarded is never called
- TypeError: Cannot read properties of null (reading 'useContext') HOT 1
- useSWRInfinite with revalidateAll: true revalidates all pages when loading next page HOT 1
- Cache specific key only
- useSWRMutation is not working with React Native New Architecture.
- useSWRInfinite does not return data until all pages are fetched HOT 2
- `useSWRSubscription` suspends forever, never calls `subscribe` when `suspense` is `true` HOT 1
- isLoading is initially false when there is no data for conditional queries.
- sometimes it automatically request again ,but the key has not changed
- Calling `setSize` before pages finish loading causes `useSWRInfinite` to trigger multiple requests HOT 2
- Visiting 404 Not Found clears all SWR Cache
- useSWRInfinite has missing types
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