无法使用父命名路由器出口导航到嵌套/子路由

我之前在AngularJS中使用了ui-router，然后在Angular 2中使用了ui-router . 我想转移到@ angular / router只是因为它似乎更受支持并且更多的库 Build 在它上面（ui-router-ng2仍处于测试阶段!!）

我的问题是我使用的是一个名为route outlet的主模板，因为主模板有一个可重用的静态页眉和页脚 . （还有一个侧栏，我为了简洁而拿出来）

我的问题是，当我进入我的'/ mainDashboard'路由器时，我无法从该路由导航到下一个嵌套/子路由'/ otherDashboard'，同时尝试在主模板'content'中使用指定的路由器插座

我应该如何在下面的代码的第十三行导航到我的路线 . 还有plunker https://plnkr.co/edit/RErIiby535x0toaA02W4?p=preview

这是我的代码

import { NgModule, Component } from '@angular/core';
import { RouterModule, Router } from '@angular/router';
import { BrowserModule } from '@angular/platform-browser';

@Component({
  selector: 'app-home',
  template: '<button (click)="go()">Go To Other Dashboard</button>'
})
export class HomeComponent {
  constructor( public router: Router ) {}
  go(){ 
    //THIS ERRORS
    this.router.navigate(['../dashboard',{outlets: {'content': ['../dashboard/mainDashboard/otherDashboard']}}]);
  }
}

@Component({
  selector: 'app-main-dashboard',
  template: `
    <header>My Static Header</header>
    <div id="main-container" class="main-background">
        <router-outlet name="content"></router-outlet>
    </div>
    <footer>My Static Footer</footer>
  `
})
export class MainDashboardComponent {
  constructor() {}
}

@Component({selector: 'app-login',template: '<button (click)="login()">Login</button>'})
export class LoginComponent {
    constructor(public router: Router) { };
    login(){
        this.router.navigate(['/dashboard',{outlets: {content: ['mainDashboard']}}]);
    }
}

@Component({selector: 'app-other-dashboard', template: '<h1>Hello Other Dashboard</h1>'})
export class OtherDashboardComponent{
  constructor() { }
}

export const routes: Array<any> = [
    {path: '',component: LoginComponent },
    {path: 'dashboard', component: MainDashboardComponent,
        children: [
            {path: 'mainDashboard',component: HomeComponent,outlet: 'content',
                children: [{path: 'otherDashboard',component: OtherDashboardComponent,  outlet: 'content'}]
            }
        ]
    }
]

    @Component({ selector: 'app-root', template: '<router-outlet></router-outlet>'})
    export class AppComponent {}

    @NgModule({
      declarations: [ AppComponent, LoginComponent, MainDashboardComponent, HomeComponent, OtherDashboardComponent],
      imports: [ BrowserModule, RouterModule.forRoot(routes) ],
      providers: [],
      bootstrap: [AppComponent],
    })
    export class AppModule { }