【发布时间】:2020-09-16 17:27:53
【问题描述】:
我想从 redux 中获取。我正在关注本教程:https://codesandbox.io/s/react-redux-application-hewdb?file=/src/pages/PostsPage.js
但是当我在我的代码中使用它时:
import React, { useState, useEffect } from 'react';
import { connect } from 'react-redux';
import {fetchInterview} from '../actions/interviewActions'
const DetailInterview = (props, { dispatch, loading, interviews, hasErrors }) => {
console.log("test interview",interviews)
useEffect(() => {
const { match: { params: { id } } } = props;
dispatch(fetchInterview(id))
}, [dispatch])
const interviewslist = interviews
console.log('interview: ', interviews)
return (
<div>
<h3>All participants</h3>
<table>
<thead>
<tr>
<th>ID</th>
<th>Interview id</th>
<th>Partcipants id</th>
<th>Time</th>
</tr>
</thead>
<tbody>
{
console.log('interviews:sad ', interviews)
}
{
interviews? interviews.map((interview) => {
console.log('sadassad',interview)
console.log('sadaghahhgsghssad',interviews)
return (
<tr key={interview.id}>
<td>{interview.id}</td>
<td>{interview.interview_id}</td>
<td>
{/* <Link to={`/posts/${post.id}`}> */}
{interview.participant_id}
{/* </Link> */}
</td>
<td>{interview.created_at}</td>
</tr>
)
}) : null
}
</tbody>
</table>
</div>
);
}
// export default DetailInterview;
const mapStateToProps = state => ({
loading: state.interview.loading,
interviews: state.interview.interview,
hasErrors: state.interview.hasErrors,
})
export default connect(mapStateToProps)(DetailInterview)
我得到一个错误:Uncaught TypeError: dispatch is not a function
无法理解这背后的错误。
【问题讨论】:
-
React 组件有 1 个参数 props (
const DetailInterview = (props) =>),即调用props.dispatch -
@NikitaMadeev 但我也需要这里需要的道具:
const { match: { params: { id } } } = props; -
我不建议去掉,只是组件没有的第二个参数,从props调用dispatch,例如:
const { dispatch } = props; -
@NikitaMadeev 值在 mapStateToProps 中未存储。
-
他们也进来
props,就像dispatch一样
标签: javascript reactjs redux react-redux redux-thunk