在导航到 Angular 2 组件中的路由时传递 @Input 并订阅 @Output [英] Passing @Input and subscribing to @Output while navigating to a Route in Angular 2 Component

问题描述

当我们导航到路由并加载组件时，

When we navigate to a route and load components,

1. 我们可以在加载的子组件中传递用 @Input 修饰的变量吗?我们可以订阅用 @Output 修饰的 EventEmitter 吗?
2. 在父组件中是否有可用的lifecycle Hook，其中定义了Route，我们可以获得对加载组件的引用，以便动态地将值\订阅函数传递给子组件?

1. Can we pass variable decorated with @Input in loaded child component and can we subscribe to EventEmitter decorated with @Output ?
2. Is there any lifecycle Hook available in parent, where Route is defined and we may get a reference to loaded component, so as to pass values\subscribe functions to child component dynamically?

父组件

   @Component({
    moduleId: module.id,
    selector: "parent",
    templateUrl: "<router-outlet></router-outlet>"
  })
  @Routes([
   { path: "/child-component1", component: Child1Component }
  ])
  export class Parent {
   // Can we pass var1 and subscribe close here of Child1Component when route is navigated dynamically based upon path?
   // Is there any lifecycleHook available in parent where Route is defined?
  }

子组件

  @Component({
    moduleId: module.id,
    selector: "child-component1",
    template: "<div>{{var1}}</div><button (click)='closeMenu()'>Close</button>"
  })
  export class Child1Component {
   @Input() var1: string;
   @Output() close: EventEmitter<any> = new EventEmitter<any>();

   constructor() { }

   closeMenu = (): void => {
      this.close.emit("");
   }
 }

我正在使用 Angular2 RC1

提前致谢！

推荐答案

只需使用共享服务进行组件之间的通信.另请参阅 https://angular.io/docs/ts/latest/cookbook/component-communication.html#!#bidirectional-service

Just use a shared service for communication between components. See also https://angular.io/docs/ts/latest/cookbook/component-communication.html#!#bidirectional-service

输入和输出不能用于路由组件.

Inputs and outputs can't be used for routed components.

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