我正在努力弄清楚如何在反應組件中等待Meteor.user()
訂閱。我知道用戶已登錄,因爲Meteor.userId()
返回_id
,但試圖訪問電子郵件地址顯示Meteor.user()
返回未定義。我假設,因爲它尚不可用。流星/反應 - 如何等待Meteor.user()
唉,由於Meteor.user()不是我手動訂閱的發佈,我不確定如何在React組件中等待它。有人能指點我一個例子嗎?
import { Meteor } from 'meteor/meteor';
import React from 'react';
import { Link } from 'react-router';
import { createContainer } from 'meteor/react-meteor-data';
import './BaseLayout.scss';
class BaseLayout extends React.Component {
constructor(props) {
super(props);
this.state = {
isAuthenticated: (Meteor.userId() !== null) ? true : false,
}
}
componentWillMount() {
if (!this.state.isAuthenticated) {
this.context.router.push('/login');
}
}
componentDidUpdate(prevProps, prevState) {
if (!this.state.isAuthenticated) {
this.context.router.push('/login');
}
}
toggleUserMenu() {
this.refs.userMenu.style.display = (this.refs.userMenu.style.display === 'block') ? 'none' : 'block';
}
logout(e) {
e.preventDefault();
Meteor.logout();
this.context.router.push('/login');
}
render() {
return(
<div id="base">
<div id="header">
<div id="top-bar" className="clear-fix">
<div className="float-left" id="logo"></div>
<div className="float-right" id="user-menu">
<div onClick={this.toggleUserMenu.bind(this)}>
<span>{this.props.currentUser.emails[0].address}</span>
<div className="arrow-down"></div>
</div>
<div id="user-menu-content" ref="userMenu">
<a onClick={this.logout.bind(this)}>Sign Out</a>
</div>
</div>
</div>
</div>
<div id="bodyContainer">
{this.props.children}
</div>
<div id="footer">
<ul>
<li><a href="mailto:[email protected]">Made by Us</a></li>
</ul>
</div>
</div>
)
}
}
BaseLayout.contextTypes = {
router: React.PropTypes.object.isRequired,
}
export default BaseLayoutContainer = createContainer(() => {
var handle = Meteor.subscribe("user.classrooms");
return {
currentUser: Meteor.user(),
dataLoading: !handle.ready(),
classrooms: Classrooms.find({}).fetch(),
};
}, BaseLayout);
我喜歡它,當答案是明顯的,只是希望我會看到它!非常感謝你提供關於解構的提示,我可以看到它將如何保持標記更清潔和更少依賴。再次感謝! – Scott
很高興我可以幫忙@DMX謝謝! –