问题描述
export const myThunk = (param1,param2,param3) => {
return dispatch => {
dispatch({type: types.myThunkType})
fetch(`https://mockurl.com?param1=${param1}¶m2=${param2}¶m3=${param3}`)
.then(response => response.json())
.then(data => {
dispatch({type: types.everythingsAllRight,payload: data.results})
})
}
}
当我从React组件分派此组件时,一切都像一个超级按钮。在我的component.js
中,我们有类似以下内容:
import myThunk from './actions/actions.js'
const dispatch = usedispatch()
return (
<button onClick={() => {dispatch(myThunk(props.param1,props.param2,props.param3)}>
)
但是当我尝试从中间件中使用相同的重击时,就像这样:
store.dispatch(anPlainObjectActionDefinedInActionsJsToo(param1,false))
.then(() => {
store.dispatch({
type: types.anotherImportantActionType,payload: {
thisData: someData,thatData: someOtherData
}
})
})
.then(store.dispatch(myThunk(param1,param3)))
我收到此错误:
Unhandled Rejection (Error): Actions must be plain objects. Use custom middleware for async actions.
该错误正在涉及处理操作类型myThunkType
的中间件:
Unhandled Rejection (Error): Actions must be plain objects. Use custom middleware for async actions.
▶ 3 stack frames were collapsed.
(anonymous function)
src/Store/middleware/middlewareThatDealsWithMyThunkTupeActionType.js:9
6 | }
7 | if (action.type !== types.myThunkType &&
8 | action.type !== types.anotherType) {
> 9 | return next(action)
| ^ 10 | }
11 |
因为它不能“返回下一个动作”。关于我在做什么错的任何提示吗?
编辑:在调试中检查时,我发现调度的thunk遇到中间件时看起来像这样:https://imgur.com/s7AS8eD