useMutationState
useMutationState 是一个 Hook，让你可以访问 MutationCache 中的所有突变。你可以传递 filters 来缩小你的突变范围，并使用 select 来转换突变状态。
示例 1：获取所有正在运行的突变的所有变量
tsx
import { useMutationState } from '@tanstack/react-query'
const variables = useMutationState({
filters: { status: 'pending' },
select: (mutation) => mutation.state.variables,
})
import { useMutationState } from '@tanstack/react-query'
const variables = useMutationState({
filters: { status: 'pending' },
select: (mutation) => mutation.state.variables,
})
示例 2：通过 mutationKey 获取特定突变的所有数据
tsx
import { useMutation, useMutationState } from '@tanstack/react-query'
const mutationKey = ['posts']
// Some mutation that we want to get the state for
const mutation = useMutation({
mutationKey,
mutationFn: (newPost) => {
return axios.post('/posts', newPost)
},
})
const data = useMutationState({
// this mutation key needs to match the mutation key of the given mutation (see above)
filters: { mutationKey },
select: (mutation) => mutation.state.data,
})
import { useMutation, useMutationState } from '@tanstack/react-query'
const mutationKey = ['posts']
// Some mutation that we want to get the state for
const mutation = useMutation({
mutationKey,
mutationFn: (newPost) => {
return axios.post('/posts', newPost)
},
})
const data = useMutationState({
// this mutation key needs to match the mutation key of the given mutation (see above)
filters: { mutationKey },
select: (mutation) => mutation.state.data,
})
示例 3：通过 mutationKey 访问最新的突变数据 每次调用 mutate 都会在突变缓存中为 gcTime 毫秒添加一个新条目。
要访问最新的调用，你可以检查 useMutationState 返回的最后一个条目。
tsx
import { useMutation, useMutationState } from '@tanstack/react-query'
const mutationKey = ['posts']
// Some mutation that we want to get the state for
const mutation = useMutation({
mutationKey,
mutationFn: (newPost) => {
return axios.post('/posts', newPost)
},
})
const data = useMutationState({
// this mutation key needs to match the mutation key of the given mutation (see above)
filters: { mutationKey },
select: (mutation) => mutation.state.data,
})
// Latest mutation data
const latest = data[data.length - 1]
import { useMutation, useMutationState } from '@tanstack/react-query'
const mutationKey = ['posts']
// Some mutation that we want to get the state for
const mutation = useMutation({
mutationKey,
mutationFn: (newPost) => {
return axios.post('/posts', newPost)
},
})
const data = useMutationState({
// this mutation key needs to match the mutation key of the given mutation (see above)
filters: { mutationKey },
select: (mutation) => mutation.state.data,
})
// Latest mutation data
const latest = data[data.length - 1]
选项
- 选项
- filters?: MutationFilters: 突变过滤器
- select?: (mutation: Mutation) => TResult
- 使用此选项来转换突变状态。
- queryClient?: QueryClient,
- 使用此选项来使用自定义的 QueryClient。否则，将使用最近上下文中的 QueryClient。
返回值
- Array<TResult>
- 将是一个数组，包含 select 为每个匹配的突变返回的值。
