我有一个使用 redux-toolkit 中的 createSlice
生成的 redux-thunk reducer ,名为 getOne
。
getOne
从 API 获取并调度加载状态的操作,(startedLoading
、finishedLoading
、errorLoading
)。
我还想使用结果数据调用在同一切片中创建的另一个名为 insert
的 actionCreater。或者直接从 getOne
reducer 更新状态。
import { createSlice } from "@reduxjs/toolkit"
import { startedLoading, finishedLoading, errorLoading } from '../slices/loadingSlice'
const apiEndpoint = "/api/v1"
const fetchOptions = { headers: { "Content-Type": "application/json" } }
const createModelSlice = function (modelName) {
return createSlice({
name: modelName,
initialState: {byId: {}},
reducers: {
insert: (state, action) => {
// ...
},
getOne: (state, action) => async (dispatch) => {
// ...
try {
const response = await fetch(/* */)
// How would I update the store here?
// 1. reference the insert actionCreater somehow.
dispatch(insert({id: id, data: response))
// 2. construct the action manually
dispatch({action: `${modelName}/insert`, payload: {id: id, data: response))
// 3. Mutate the state here and rely immer. (I'm not sure exactly how that works)
state[modelName].byId[id] = response
dispatch(finishedLoading({ key: /* */ }))
} catch (error) {
dispatch(errorLoading({ key: /* */ }))
}
},
// ...
}
})
}
最佳答案
我错过了文档中关于切片无法使用 thunk 的部分。无论哪种方式,它都不起作用,因为 thunk 操作不会映射到 reducer ,而是将其他操作分派(dispatch)给多个其他 reducer /操作。
创建切片后,我将 thunk 操作添加到切片操作中。这样我就可以引用其他操作
import { createSlice } from "@reduxjs/toolkit"
const slice = createSlice({
name: name,
initialState: { byId: {} },
reducers: { /* */ }
}
slice.actions.myThunkAction = payload => async (dispatch, state) => {
// ...
slice.actions.nonThunkAction({ id: id, data: data})
slice.actions.anotherNonThunkAction({ index payload.index, data: data.map( /* */ )})
}
import { createSlice } from "@reduxjs/toolkit"
import { startedLoading, finishedLoading, errorLoading } from '../slices/loadingSlice'
import encodeURLParams from '../tools/encodeURLParams'
const apiEndpoint = "/api/v1"
const fetchOptions = { headers: { "Content-Type": "application/json" } }
const createModelSlice = function (modelName) {
const slice = createSlice({
name: modelName,
initialState: { byId: {} },
reducers: {
insert: (state, action) => {
// ...
},
bulkInsert: (state, action) => {
// ...
},
}
})
slice.actions.loadMany = payload => async (dispatch, state) => {
dispatch(startedLoading({ key: /* */ }))
try {
const response = await fetch(/* */)
dispatch(slice.actions.insert(response))
dispatch(finishedLoading({ key: /* */ }))
} catch (error) {
dispatch(errorLoading({ key: /* */ }))
}
}
slice.actions.loadOne = payload => async (dispatch, state) => {
dispatch(startedLoading({ key: /* */ }))
try {
const response = await fetch(/* */)
dispatch(slice.actions.bulkInsert(response))
dispatch(finishedLoading({ key: /* */ }))
} catch (error) {
dispatch(errorLoading({ key: /* */ }))
}
}
return slice
}
export default createModelSlice
关于redux-toolkit 在另一个 thunk reducer 的同一切片中使用 actionCreater,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/59448133/