Javascript 如何让组件检测到路由更改
我有3条路径渲染相同的组件Javascript 如何让组件检测到路由更改,javascript,reactjs,react-router,react-router-dom,Javascript,Reactjs,React Router,React Router Dom,我有3条路径渲染相同的组件,我希望这些组件内部的状态根据位置进行更改 路线: import React from 'react' import { browserHistory, HashRouter, Route, Switch } from 'react-router-dom' import { MainContainer } from '../containers' import { LoginContainer } from '../containers' const Routes
,我希望这些组件内部的状态根据位置进行更改
路线:
import React from 'react'
import { browserHistory, HashRouter, Route, Switch } from 'react-router-dom'
import { MainContainer } from '../containers'
import { LoginContainer } from '../containers'
const Routes = () => {
return (
<HashRouter history={ browserHistory }>
<Switch>
<Route exact={ true } path="/" component={ LoginContainer }/>
<Route exact={ true } path="/dashboard" component={ MainContainer }/>
<Route exact={ true } path="/dashboard/services" component={ MainContainer }/>
<Route exact={ true } path="/dashboard/users" component={ MainContainer }/>
</Switch>
</HashRouter>
);
}
export default Routes
从“React”导入React
从“react router dom”导入{browserHistory,HashRouter,Route,Switch}
从“../containers”导入{maincainer}
从“../containers”导入{LoginContainer}
常数路由=()=>{
返回(
);
}
导出默认路由
问题是componentDidMount只触发一次,当路径更改时不会再次触发:
如何使用hashRouter在React中检测路由状态
边栏
从“React”导入React
从“react router dom”导入{withRouter}
类侧栏扩展了React.Component{
建造师(道具){
超级(道具);
this.state={}
this.navigate=this.navigate.bind(this);
}
导航(路径){
this.props.history.push(`/dashboard/${path}`);
}
渲染(){
返回(
主要
- this.navigate('services')}>services
- this.navigate('users')}>users
)
}
}
使用路由器导出默认值(侧栏)
主容器
import React,{Component}来自“React”
从“react redux”导入{connect}
从“../../store”导入存储
从“firebase”导入*作为firebase
//组成部分
从“../../components”导入{Sidebar}
从“../../components”导入{Header}
//容器
从“../Users/UserListContainer”导入UserListContainer
从“/Body”导入正文
//行动
从“../../actions”导入{addCurrentUser,searchUser,usersService,servicesService}
导出类主扩展组件{
建造师(道具){
超级(道具);
}
componentDidMount(){
firebase.auth().onAuthStateChanged((用户)=>{
this.checkAuth();
});
}
checkAuth(){
const user=firebase.auth().currentUser;
this.props.addCurrentUser(user.email);
}
render(){
返回(
)
}
}
常量mapStateToProps=(状态)=>{
返回{
服务:state.globalReducer.service,
currentUser:state.globalReducer.currentUser
}
}
const mapDispatchToProps=(调度)=>{
返回{
searchUser:(user)=>{dispatch(searchUser(user))},
addCurrentUser:(用户)=>{dispatch(addCurrentUser(用户))},
usersService:()=>{dispatch(usersService())},
servicesService:()=>{dispatch(servicesService())}
}
}
const MainContainer=Main;
导出默认连接(mapStateToProps、mapDispatchToProps)(主容器)
如果您想在用withRouter()包装的组件中获取当前路径
,您可以使用withRouter()提供给组件的位置
道具
props.location.pathname
可能是您感兴趣的内容
编辑:
好的,您的
不知道位置。它没有使用withRouter()
包装。您的
是,但我看不出您在路线更改方面使用该信息做了什么
编辑#2:
一旦您的组件具有位置感知功能,您就可以添加一个componentWillReceiveProps
lifecycle方法,并查看您正在组件中获取这些属性。您可以在组件中的任何位置使用这些属性
componentWillReceiveProps( nextProps ) {
const { location, history, match } = this.props;
console.log( location );
console.log( history );
console.log( match );
}
是的,我可以在主容器第一次装载时得到,但是当我改变路线,这些路线装载相同的主容器时,它不会重新初始化@Kyle Richardson,补充道!你想在你的答案中添加组件willreceiveprops吗?@azium啊,就是这样!!!想发布你的答案吗?
import React, { Component } from 'react'
import { connect } from 'react-redux'
import store from '../../store'
import * as firebase from 'firebase'
// Components
import { Sidebar } from '../../components'
import { Header } from '../../components'
// Containers
import UserListContainer from '../Users/UserListContainer'
import Body from './Body'
// Actions
import { addCurrentUser, searchUser, usersService, servicesService } from '../../actions'
export class Main extends Component {
constructor(props) {
super(props);
}
componentDidMount() {
firebase.auth().onAuthStateChanged((user) => {
this.checkAuth();
});
}
checkAuth() {
const user = firebase.auth().currentUser;
this.props.addCurrentUser(user.email);
}
render() {
return (
<main>
<Header currentUser={ this.props.currentUser }/>
<section className="main-body">
<Sidebar />
<Body service={this.props.service}/>
</section>
</main>
)
}
}
const mapStateToProps = (state) => {
return {
service: state.globalReducer.service,
currentUser: state.globalReducer.currentUser
}
}
const mapDispatchToProps = (dispatch) => {
return {
searchUser: (user) => { dispatch(searchUser(user)) },
addCurrentUser: (user) => { dispatch(addCurrentUser(user)) },
usersService: () => { dispatch(usersService()) },
servicesService: () => { dispatch(servicesService()) }
}
}
const MainContainer = Main;
export default connect(mapStateToProps, mapDispatchToProps)(MainContainer)
componentWillReceiveProps( nextProps ) {
const { location, history, match } = this.props;
console.log( location );
console.log( history );
console.log( match );
}