React-router link doesn't work

Question

React-router is off to a really bad start... What seems basic doesn't work. Using react-router 2.0.0 my Link component updates the URL to be /about, but my page doesn't render the About component after that...

Entry point js

var React = require('react');
var ReactDOM = require('react-dom');
var Router = require('react-router').Router;
var Route = require('react-router').Route;
var hashHistory = require('react-router').hashHistory;
var App = require('./components/App.react');
var About = require('./components/About');

ReactDOM.render(
    <Router history={hashHistory} >
        <Route path="/" component={App}>
            <Route path="about" component={About} />
        </Route>
    </Router>, 
    document.getElementById('app')
);

App.js

'use strict';

var React = require('react');
var Link = require('react-router').Link;
var Header = require('./Header');
var UserPanel = require('./UserPanel');
var ModelPanel = require('./ModelPanel.react');
var EventPanel = require('./event/EventPanel');
var VisPanel = require('./vis/VisPanel');
var LoginForm = require('./LoginForm');
var AppStore = require('../stores/AppStore');
var AppStates = require('../constants/AppStates');

var App = React.createClass({

  [... code omitted ...]

  render: function() {
    var viewStateUi = getViewStateUi(this.state.appState);

    return (
      <div>
        <Header />
        <Link to="/about">About</Link>
        {viewStateUi}
      </div>
    );
  }

});

Answer 1

Since the 'About' route is a child of the 'App' route, you need to either add this.props.children to your App component:

var App = React.createClass({

 render: function() {

   var viewStateUi = getViewStateUi(this.state.appState);

    return (
      <div>
        <Header />
        <Link href="/about">About</Link>
        {viewStateUi}
        {this.props.children}
      </div>
    );
  }
});

or separate your routes:

ReactDOM.render(
  <Router history={hashHistory} >
    <Route path="/" component={App} />
    <Route path="/about" component={About} />
  </Router>, 
  document.getElementById('app')
);