React-Redux TypeError:dispatch不是函数

时间:2018-05-02 18:57:25

标签: javascript reactjs redux react-redux

我正在尝试为我的React TODO应用创建一个搜索栏。

这是我的Searchbar类:

import React, { Component } from 'react';
import { FilterTasks } from '../../redux/actions/searchbar';
import searchreducer from '../../redux/reducers/searchbar';
import {connect} from 'react-redux';
import {bindActionCreators} from 'redux';

class SearchBar extends Component{
    constructor(props){
        super(props);
        this.state = {term: ''};
    }

    render(){
        return(
            <div>
            <input 
                className='searchbar' 
                placeholder="Filter by task" 
                onChange={term => this.props.FilterTasks(term.target.value)} />
            </div>
        );
    }
}

function MapDispatchToProps(dispatch){
    return bindActionCreators({FilterTasks},dispatch); 
}

export default connect (MapDispatchToProps)(SearchBar);

这是我的行动:

export const FilterTasks = (filter) => {
    return {
        type: 'FILTER_TASKS',
        filter
    }
}

这是我的减速机:

const SearchReducer = (state = {},action) =>{
    switch(action.type){
        case 'FILTER_TASKS':
        return {
            tasks: state.tasks.filter(it => it.task.toLowerCase().includes(action.filter.toLowerCase()))
        };
        break;
    }
    return state;
}

当我在搜索栏上写任何内容时,我会自动收到错误:

 Uncaught TypeError: dispatch is not a function
    at Object.FilterTasks

关于这个的任何想法?,我不确定我的搜索栏是否像这样实现得好。

1 个答案:

答案 0 :(得分:2)

作为第一个参数connect期望获得mapStateToProps函数。因此,您需要明确传递undefined而不是它。

export default connect(undefined, MapDispatchToProps)(SearchBar);