react context传值
用react-router的时候，希望给{this.props.children}这个组件传一个layout里的用户名…
Layout.js中：
const Layout = React.createClass({
childContextTypes: {
username: React.PropTypes.string
},
getChildContext() {
return {
username: this.state.username
};
},
...
子组件中：
const DateRange = React.createClass({
contextTypes: {
username: React.PropTypes.string
},
...
render() {
const { username } = this.context;
return ...
}
...