reactjs - React Router v4 获取当前位置

Question

我刚刚开始使用react-router V4，我想知道如何获取路由器的当前位置

这是我的源代码

import {Meteor} from 'meteor/meteor';
import React, {Component} from 'react';
import ReactDOM from 'react-dom';
import createHistory from 'history/createBrowserHistory'
import {Route, BrowserRouter as Router, Switch} from 'react-router-dom'
import {Tracker} from 'meteor/tracker';

import Signup from '../imports/ui/signUp';
import Link from '../imports/ui/link';
import Login from '../imports/ui/login';
import NotFound from '../imports/ui/notFound';

const history = createHistory();
const unauthenticatedPages = ['/', '/signup'];
const authenticatedPages = ['/links'];

const routes = (
    <Router history={history}>
        <Switch>
            <Route exact path="/" component={Login}/>
            <Route exact path="/signup" component={Signup}/>
            <Route path="/links" component={Link}/>
            <Route component={NotFound}/>
        </Switch>
    </Router>
);
Tracker.autorun(() => {
    const unlisten = history.listen((location, action) => {
        // location is an object like window.location
        console.log(action, location.pathname, location.state)
    })

    const isAuthenticated = !!Meteor.userId();
    console.log('location: ', location.pathname);
    //const pathName =
});

Meteor.startup(() => {
    ReactDOM.render(routes, document.getElementById('app'));
}); 

我尝试根据react-router文档使用历史记录，但没有得到位置。

如何获取路线的当前位置？

我不使用 redux，如果没有它，我将不胜感激。

谢谢，迈克尔。

Answer 1

您可以使用withrouter HOC为此。每当路由发生变化时，它都会重新渲染包装的组件。这是一个例子 -

import {Meteor} from 'meteor/meteor';
import React, {Component} from 'react';
import ReactDOM from 'react-dom';
import createHistory from 'history/createBrowserHistory'
import {Route, BrowserRouter as Router, Switch} from 'react-router-dom'
import {withRouter} from 'react-router'
import {Tracker} from 'meteor/tracker';

import Signup from '../imports/ui/signUp';
import Link from '../imports/ui/link';
import Login from '../imports/ui/login';
import NotFound from '../imports/ui/notFound';

const history = createHistory();
const unauthenticatedPages = ['/', '/signup'];
const authenticatedPages = ['/links'];

const
ChangeTracker = withRouter(({match, location, history}) => {
    console.log(action, location.pathname, location.state);
    return false;
}),
routes = (
    <Router history={history}>
        <Switch>
            <Route exact path="/" component={Login}/>
            <Route exact path="/signup" component={Signup}/>
            <Route path="/links" component={Link}/>
            <Route component={NotFound}/>
        </Switch>
        <ChangeTracker />
    </Router>
);

Meteor.startup(() => {
    ReactDOM.render(routes, document.getElementById('app'));
});