reactjs - 在react-router 2.4.0中重定向willTransitionTo？

Question

我目前在我的聊天应用程序上使用 "react-router": "^2.4.0" ，并且对没有用户时如何重定向感到困惑。我认为 redirect 在 "^2.4.0" 中不起作用。

我应该在我的聊天路径上使用onEnter Hook 吗？

类似这样的事情:

 <Route path="chat" component={Chat} onEnter={Chat.willTransitionTo}/>

routes.js

 <Route path="/" component={App} >
    <IndexRoute component={Chat} />
    <Route path="chat" component={Chat} />
    <Route path="login" component={Login} />
 </Route>

Chat.jsx

static willTransitionTo(transition){
  var state = ChatStore.getState();
  if(!state.user){
    transition.redirect('/login');
  }
}

Answer 1

我通过使用 setRouteLeaveHook 使其工作，如下所示: https://github.com/ReactTraining/react-router/blob/master/docs/guides/ConfirmingNavigation.md

return false to prevent a transition w/o prompting the user

但是，他们忘记提及该钩子(Hook)也应该取消注册，请参阅 here和 here .

我们可以使用它来实现我们自己的解决方案，如下所示:

class YourComponent extends Component {
  constructor() {
    super();

    const {route} = this.props;
    const {router} = this.context;

    this.unregisterLeaveHook = router.setRouteLeaveHook(
      route,
      this.routerWillLeave.bind(this)
    );
  }

  componentWillUnmount() {
    this.unregisterLeaveHook();
  }

  routerWillLeave() {
    // return false to prevent a transition w/o prompting the user,
    // or return a string to allow the user to decide:
    if (!this.state.isSaved) {
      return 'Your work is not saved! Are you sure you want to leave?'
    }
  }
  ...
}

YourComponent.contextTypes = {
  router: routerShape
};