我正在努力通过光标分页来实现无限滚动的全部支持,增加了新的元素和删除。我使用了GitHub讨论中的一个很好的例子根据我的要求,很少进行调整。这是我实现 useinfinitequery
。
export function useInfiniteQuery<
ListOptions,
ResourceType,
ResultType extends IList<ResourceType> = IList<ResourceType>,
Endpoint extends QueryHooks<
QueryDefinition<any, any, any, ResultType, any>
> = QueryHooks<QueryDefinition<any, any, any, ResultType, any>>,
>(
endpoint: Endpoint,
{
options,
getNextPageParam,
select = defaultSelect,
inverseAppend = false,
}: UseInfiniteQueryOptions<ListOptions, ResultType, ResourceType>,
) {
const nextPageRef = useRef<string | undefined>(undefined);
const resetRef = useRef(true);
const [pages, setPages] = useState<ResourceType[] | undefined>(undefined);
const [trigger, result] = endpoint.useLazyQuery();
const next = useCallback(() => {
if (nextPageRef.current !== undefined) {
trigger(
{ options: { ...options, page_after: nextPageRef.current } },
true,
);
}
}, [trigger, options]);
useEffect(() => {
resetRef.current = true;
trigger({ options }, true);
// eslint-disable-next-line react-hooks/exhaustive-deps
}, Object.values(options));
useEffect(() => {
if (!result.isSuccess) {
return;
}
nextPageRef.current = getNextPageParam(result.data);
if (resetRef.current) {
resetRef.current = false;
setPages(select(result.data));
} else {
setPages((pages) =>
inverseAppend
? select(result.data).concat(pages ?? [])
: (pages ?? []).concat(select(result.data)),
);
}
}, [result.data, inverseAppend, getNextPageParam, select, result.isSuccess]);
return {
...result,
data: pages,
isLoading: result.isFetching && pages === undefined,
hasMore: nextPageRef.current !== undefined,
next,
};
}
这个示例在分页方面非常有用,但是当我尝试添加新元素时,问题。我无法区分新元素是从新的分页批处理到达的,或者我打电话给突变
和无效的标签(在这种情况下为RTK Refetch Refetch当前订阅和update result.data
我'm在第二使用
中聆听。
我需要以某种方式确定何时需要附加新的到达数据(如果下一个分页)或完全替换(如果何时调用突变并需要重置光标并滚动到顶部/底部)。
我的调用突变并获取放置在不同组件中的数据。我试图在调用突变并需要重置数据时使用 fixed cachekey
进行侦听,但是当我需要在不同的地方重复使用突变时,我很快就会面临很多重复和问题,但是请保持相同修复了缓存键。
有人有一个想法如何完成?也许,我需要使用 useInfiniteQuery
实现或为当前实现提供一些修复程序。但是我不知道处理这种情况。谢谢!
I'm struggling to implement full support of infinite scroll with cursor pagination, adding new elements and removing. I have used great example from github discussion https://github.com/reduxjs/redux-toolkit/discussions/1163#discussioncomment-876186 with few adjustments based on my requirements. Here is my implementation of useInfiniteQuery
.
export function useInfiniteQuery<
ListOptions,
ResourceType,
ResultType extends IList<ResourceType> = IList<ResourceType>,
Endpoint extends QueryHooks<
QueryDefinition<any, any, any, ResultType, any>
> = QueryHooks<QueryDefinition<any, any, any, ResultType, any>>,
>(
endpoint: Endpoint,
{
options,
getNextPageParam,
select = defaultSelect,
inverseAppend = false,
}: UseInfiniteQueryOptions<ListOptions, ResultType, ResourceType>,
) {
const nextPageRef = useRef<string | undefined>(undefined);
const resetRef = useRef(true);
const [pages, setPages] = useState<ResourceType[] | undefined>(undefined);
const [trigger, result] = endpoint.useLazyQuery();
const next = useCallback(() => {
if (nextPageRef.current !== undefined) {
trigger(
{ options: { ...options, page_after: nextPageRef.current } },
true,
);
}
}, [trigger, options]);
useEffect(() => {
resetRef.current = true;
trigger({ options }, true);
// eslint-disable-next-line react-hooks/exhaustive-deps
}, Object.values(options));
useEffect(() => {
if (!result.isSuccess) {
return;
}
nextPageRef.current = getNextPageParam(result.data);
if (resetRef.current) {
resetRef.current = false;
setPages(select(result.data));
} else {
setPages((pages) =>
inverseAppend
? select(result.data).concat(pages ?? [])
: (pages ?? []).concat(select(result.data)),
);
}
}, [result.data, inverseAppend, getNextPageParam, select, result.isSuccess]);
return {
...result,
data: pages,
isLoading: result.isFetching && pages === undefined,
hasMore: nextPageRef.current !== undefined,
next,
};
}
This example works great with pagination, but the problem when I'm trying to add new elements. I can't distinguish are new elements arrived from new pagination batch or when I called mutation
and invalidated tag (in this case RTK refetch current subscriptions and update result.data
which I'm listening in second useEffect
).
I need to somehow to identify when I need to append new arrived data (in case of next pagination) or replace fully (in case when mutation was called and needs to reset cursor and scroll to top/bottom).
My calling mutation and fetching the data placed in different components. I tried to use fixedCacheKey
to listening when mutation was called and needs to reset data, but I very quickly faced with a lot of duplication and problem when I need to reuse mutation in different places, but keep the same fixed cache key.
Someone has an idea how to accomplish it? Perhaps, I need to take another direction with useInfiniteQuery
implementation or provide some fixes to current implementation. But I have no idea to handle this situation. Thanks!
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