upstream-tanstack-query/docs/framework/solid/reference/functions/useIsMutating.md

id, title, redirect_from

id	title	redirect_from
useIsMutating	useIsMutating	framework/solid/reference/useIsMutating

function useIsMutating(filters?, queryClient?): Accessor<number>;

Defined in: packages/solid-query/src/useIsMutating.ts:28

The useIsMutating hook returns the number of mutations that your application currently has pending (useful for app-wide loading indicators).

Parameters

filters?

Accessor<MutationFilters<unknown, Error, unknown, unknown>>

An accessor returning the MutationFilters to narrow down the matched mutations.

queryClient?

Accessor<QueryClient>

An accessor for a custom QueryClient. Otherwise, the one from the nearest context will be used.

Returns

Accessor<number>

An accessor for the number of the mutations that your application currently has pending.

Example

import { useIsMutating } from '@tanstack/solid-query'

function PostsMutatingIndicator() {
  // How many mutations matching the posts prefix are in progress?
  const isMutatingPosts = useIsMutating(() => ({ mutationKey: ['posts'] }))

  return isMutatingPosts() > 0 ? <span>Saving posts...</span> : null
}