我正在使用ReactJS進行SPA。我有一個根組件應用程序,然後有幾個子組件。在App組件中,我試圖存儲一些應用程序級別的狀態,例如登錄用戶標識和其他數據。但是我沒有看到我的狀態被傳播下來的子組件。ReactJS在組件之間傳播數據
應用
import { Router, Route, Link, IndexRoute, browserHistory, hashHistory } from 'react-router';
import ParameterContainer from './components/parameter/parameter-container';
import NavMenu from './components/navigation/nav-menu';
import {Alert} from 'react-bootstrap';
import SelectFilter from './components/sample/sample-container';
// Main component and root component
export default class App extends React.Component {
constructor(props) {
super(props);
this.state = {
userId: null,
roles: null,
parameterTypes: {
'STRING': 'STRING',
'BOOLEAN': 'BOOLEAN',
'INTEGER': 'INTEGER',
'DECIMAL': 'DECIMAL'
}
};
}
render() {
return (
<div>
<NavMenu />
<div className="container">
{this.props.children}
</div>
</div>
)
}
}
// page for 404
class NoMatch extends React.Component {
render() {
return (
<div className="container">
<Alert bsStyle="danger">
<h1>404: Not Found</h1>
<h3>The requested resource does not exist!</h3>
</Alert>
<img src="images/404.png" style={{display: 'block', margin: '0 auto', width: 300, height: '*'}} />
</div>
)
}
}
// render the application
ReactDOM.render((
<Router history={hashHistory}>
<Route path="/" component={App}>
<Route path="parameter" component={ParameterContainer} />
<Route path="sample" component={SelectFilter} />
<Route path="*" component={NoMatch}/>
</Route>
</Router>
), document.getElementById('react'))
輔元件
import React from 'react';
export default class ParameterContainer extends React.Component {
constructor(props) {
super(props);
this.state = { parameters: [] };
this.client = rest.wrap(mime);
this.fetchFromApi = this.fetchFromApi.bind(this);
console.log('Props:' + props);
}
render() {
....
}
的this.props不包含我所期待的。我需要將數據傳遞給兒童組件。