Question

我想在名为“App”的顶级React组件上使用withRouter。

文档在这里：https://github.com/reactjs/react-router/blob/v2.4.0/upgrade-guides/v2.4.0.md#withrouter-hoc-higher-order-component

我这样用：

import React from "react";
import { render } from "react-dom";
import {Router, Link, hashHistory, Route, IndexRoute, withRouter} from "react-router";
import VoteView from "./voteview/Voteview.jsx";
import OverView from "./overview/Overview.jsx";
import AppBar from 'material-ui/AppBar';
import getMuiTheme from 'material-ui/styles/getMuiTheme';
import MuiThemeProvider from 'material-ui/styles/MuiThemeProvider';
import injectTapEventPlugin from 'react-tap-event-plugin';

//Needed for onTouchTap
//Can go away when react 1.0 release
//Check this repo:
//https://github.com/zilverline/react-tap-event-plugin
injectTapEventPlugin();

const App = React.createClass({
  render() {
      return (
          <div>
              <AppBar
                title="Democratizer"
                onTitleTouchTap={()=>this.props.router.push('/')}
              >
              </AppBar>
              <br/>

            {this.props.children}
          </div>
      );
  }
});

render((
  <MuiThemeProvider muiTheme={getMuiTheme()}>
    <Router history={hashHistory}>
      <Route path="/" component={App}>
          <Route path="voteview/:baselineId" component={VoteView}/>
          <IndexRoute component={OverView}/>
      </Route>
    </Router>
  </MuiThemeProvider>
  ), document.getElementById('app'));

module.exports = withRouter(App);

我想使用withRouter（App）以使Appbar标题可点击。如果用户单击它，则应打开默认的“/”路径。这就是我尝试用onTitleTouchTap={()=>this.props.router.push('/')}实现的目标。

我的问题是路由器不存在。当用户点击Appbar中的标题时，会触发错误：Uncaught TypeError: Cannot read property 'push' of undefined。

对于组件树下面的组件，

withRouter（SomeComponent）可以正常工作。但在这种情况下，我无法让它运行。

任何想法我做错了什么？

Answer 1

这种情况正在发生，因为您在渲染反应应用程序后注入了路由器。

const App = React.createClass({
  render() {
      return (
          <div>
              <AppBar
                title="Democratizer"
                onTitleTouchTap={()=>this.props.router.push('/')}
              >
              </AppBar>
              <br/>

            {this.props.children}
          </div>
      );
  }
});

App = withRouter(App);


render((
  <MuiThemeProvider muiTheme={getMuiTheme()}>
    <Router history={hashHistory}>
      <Route path="/" component={App}>
          <Route path="voteview/:baselineId" component={VoteView}/>
          <IndexRoute component={OverView}/>
      </Route>
    </Router>
  </MuiThemeProvider>
  ), document.getElementById('app'));

更好的解决方案是为App创建一个文件，就像使用其他组件一样。

const App = React.createClass({
  render() {
      return (
          <div>
              <AppBar
                title="Democratizer"
                onTitleTouchTap={()=>this.props.router.push('/')}
              >
              </AppBar>
              <br/>

            {this.props.children}
          </div>
      );
  }
});

module.exports = withRouter(App);

并将其导入index.js。

react - 路由器withRouter不注入路由器

1 个答案: