Populating Angular2 child exit router

Question

Since I heard Angular, the router supports nested <router-outlet> tags, I am trying to use two of them. I use the latest Angular -CLI, converting from ui-router to Angular Router. I can’t get a second router to populate the contents.

(Parent routing is working fine) application-routing.module.ts

...
const routes: Routes = [
    { path: '', pathMatch: 'full', component: LoginComponent },
    { path: 'login', pathMatch: 'full', component: LoginComponent },
    { path: 'dashboard',
        pathMatch: 'full',
        component: DashboardComponent // this holds the second router-outlet
    },
    { path: '**', component: LoginComponent }
];

@NgModule({
    imports: [
        RouterModule.forRoot(routes)
    ],
    exports: [ RouterModule ]
})
export class AppRoutingModule { }

app.component.ts - it just keeps the router exiting and works great at the top level ...

<router-outlet></router-outlet>

The dashboard stores universal headers, footers, sidebars, etc. Therefore, I want it to be on a top-level router. Sub-router-outlet will populate child views, but will not populate.

Attempt 1 dashboard-routing.module.ts

export const dashboardRoutes: Routes = [
    { path: '', pathMatch: 'full', redirectTo: 'home' },
    { path: 'home', pathMatch: 'full', component: HomeComponent },
    { path: 'about', pathMatch: 'full', component: AboutComponent }
]
@NgModule({
    imports: [
        RouterModule.forChild(dashboardRoutes)
    ],
    exports: [ RouterModule ]
})
export class DashboardRoutingModule { }

2 -routing.module.ts Angular2: - -

export const dashboardRoutes: Routes = [
    {
        path: 'dashboard',
        children:[
            { path: '', component: DashboardComponent},
            { path: 'home', component: HomeComponent},
            { path: 'about', component: AboutComponent}
        ]
    }
 ]
@NgModule({
    imports: [
        RouterModule.forChild(dashboardRoutes)
    ],
    exports: [ RouterModule ]
})
export class DashboardRoutingModule { }

Dashboard - . app.component.html: (

dashboard.component.html

<header>...</header>
<aside class="sidenav">...<aside>

<!-- why can't I populate you? -->
<router-outlet></router-outlet>

************** , PierreDuc! **************

-routing.module.ts

// seems counter-intuitive that the dashboard component isn't actually in here..., but it works!
const routes: Routes = [
    { path: '', pathMatch: 'full', component: LoginComponent },
    { path: 'login', pathMatch: 'full', component: LoginComponent },
    { path: '**', component: LoginComponent }
];
@NgModule({
    imports: [
        RouterModule.forRoot(routes),
        DashboardRoutingModule // this is the magic. I'm assuming to put it second is better (though putting it first didn't seem to have any immediate negative effect)
    ],
    exports: [ RouterModule ]
})
export class AppRoutingModule { }

-routing.module.ts

export const dashboardRoutes: Routes = [
    {
        path: 'dashboard',
        component: DashboardComponent,
        children:[
            { path: '', component: HomeComponent },
            { path: 'home', pathMatch: 'full', component: HomeComponent },
            { path: 'about', pathMatch: 'full', component: AboutComponent }
        ]
    }
]
@NgModule({
    imports: [
        RouterModule.forChild(dashboardRoutes)
    ],
    exports: [ RouterModule ]
})
export class DashboardRoutingModule { }

, :

login.component.ts

... passed validation ...
this._router.navigate(['/dashboard']);
this._router.navigate(['/dashboard/home']);

routerLink dashboard.component.html

[routerLink]="['../login']" <!-- back to login, though the '../' seems less than ideal

routerLink -: dashboard.component.html:

[routerLink]="['../about']"

Answer 1

router-outlet children . . dashboard AppRoutingModule 2:

-

const routes: Routes = [
    { path: '', pathMatch: 'full', component: LoginComponent },
    { path: 'login', pathMatch: 'full', component: LoginComponent },
    { path: '**', component: LoginComponent }
];

DashboardRoutingModule , 2 ( children), AppRoutingModule, AppModule.