无法使用选择器从Redux存储中获取值

Question

我无法将redux存储值获取到props，我检查了reducers，store，action和JS文件，一切正常。但是，同时将选择器传递给mapStateToProps。

错误

错误：未捕获（承诺）TypeError：Object（...）不是函数

at selectHosDeatilsResult (AddAppointment.js?0a10:319)

import React from 'react';
import { connect } from 'react-redux';
import { createSelector } from 'reselect';

 class example extends React.PureComponent {
  render() {
    console.log('this.props', this.props);
 return (
<div>
</div>
);
}
}
const selectHosDeatilsResult = () => createSelector(
  makeHospitalResult(),
  value => ({ value }),
);

const mapStateToProps = state => ({
details: selectDeatilsResult()(state),
});
export default connect(mapStateToProps, null)(example);

减速器代码

const initialState = fromJS({
  hospitalResult: null,
});

export default function Reducer(state = initialState, action) {
  switch (action.type) {

   case HOSPITAL_SUCCESS:
return state.set('requesting', false).set('hospitalResult',action.payload);


        default: return state;
      }
    }

选择器代码

import { createSelector } from 'reselect';
const SelectAppointment = (state) => state.get('appointments');

const makeHospitalResult = () => createSelector(
  SelectAppointment,
  (state) => state.get('hospitalResult')
);

Answer 1

如果您正在使用热重装，请确保重新启动开发服务器。我之前遇到过这样的问题：）