连接 2 个控制器并可以访问第二个控制器中的第一个控制器属性

问题描述

我有角度飞镖的问题.1 个 html 文件来触发作用域和 2 个控制器类index.html

i have a problem with angular dart. 1 html file to trigger scopes and 2 controller classesindex.html

...{{subCtrl.user.name}}...

... {{subCtrl.user.name}} ...

第一个控制器

@Controller(
  selector: '[mainController]',
  publishAs: 'mainCtrl'
)
class MainController{
  User user = new User('testuser');
  MainController();
}

第二个控制器

@Controller(
  selector: '[subController]',
  publishAs: 'subCtrl'
)
class SubController{

  @NgOneWay('user')
  User user;

  // constructor
  SubController(){
    getData();
  }

  void getData(){
    if(user != null){
      // following code is not exececutet, because user is null
      httpRequst(...);
    }
  }
}

用户在@NgOneWay 上设置的时间是什么时候?似乎不是在构造函数完成之前.我必须在哪里调用我的方法?

when is the time user is set over @NgOneWay? seems like not before the constructor is finished. where do i have to call my method?

现在我遇到了问题，我必须在 SubController 类的 getData 函数中发出异步请求.这个 http 请求需要即 user.name 属性来构建域，但是当我在构造函数中启动它时用户不活动.我无法将身份验证设置为第二个控制器.必须有另一种选择才能使其正常工作.

now i have the problem i have to make a asynch request in the getData function in the SubController class. this http request needs i.e the user.name propertie to build the domain, but user is not active when i start it in the constructor. i cant set the authentification to the second controller. there must be another option to get this working.

为了 dart 的未来，我尝试了几件事，但没有让我为一家物业工作.

i tried several things with dart's future, but did not get i working for a propertie.

推荐答案

这曾经是 AttachAware 接口.

class SubController implements AttachAware {
  attach() {
    getData();
    // or new Future(() => getData()); // if the line above still doesn't work - to give Angular one additional cycle to finish
  }
}

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