子模块中缺少父模块路由URL

Angular的新手，正在尝试在模块中构建代码。我有一个管理模块响应

/管理员

请求，现在我试图将另一个子模块添加到Admin模块中，称为Portfolio Module。

除了我希望投资组合模块能够响应

/ admin / portfolio

请求。现在它对

/投资组合

要求。

在这里，我要导入PortfolioModule

admin.module.ts

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { AdminRoutingModule } from  './admin-routing.module';
import { IndexComponent } from './shared/index/index.component';
import {PortfolioModule} from './portfolio/portfolio.module';

@NgModule({
  declarations: [IndexComponent],
  imports: [
    CommonModule,
    PortfolioModule,
    AdminRoutingModule
  ]
})
export class AdminModule { }

以为我可能需要将PortfolioModule定义为子级路由。在管理路由内。

admin-routing.module.ts

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';

import { IndexComponent } from './shared/index/index.component';

const routes: Routes = [
  {
    path: 'admin',
    component: IndexComponent,
    children: [
      {
        path: 'portfolio',
        /*Maybe add Portfolio Module here?*/
      }        
    ]
  }
];
@NgModule({
  imports: [RouterModule.forChild(routes)],
  exports: [RouterModule]
})
export class AdminRoutingModule { }

这是我的投资组合模块，没什么特别的。

Portfolio.module.ts

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { PortfolioRoutingModule } from './portfolio-routing.module';
import { IndexComponent } from './index/index.component';
import { CreateComponent } from './create/create.component';
import { ListComponent } from './list/list.component';
import { UpdateComponent } from './update/update.component';
@NgModule({
  declarations: [IndexComponent, CreateComponent, ListComponent, UpdateComponent],
  imports: [
    CommonModule,
    PortfolioRoutingModule
  ]
})
export class PortfolioModule { }

最后是我的投资组合路由，也许我在这里错过了一些东西，告诉它包括父路由。

Portfolio-routing.module.ts

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';

import { IndexComponent } from './index/index.component';
import { ListComponent } from './list/list.component';
import { CreateComponent } from './create/create.component';
import { UpdateComponent } from './update/update.component';

const routes: Routes = [
  {
    path: 'portfolio',
    component: IndexComponent,
    children: [
      {
        path: 'list',
        component: ListComponent
      },
      {
        path: 'create',
        component: CreateComponent
      },
      {
        path: 'update',
        component: UpdateComponent
      }
    ]
  }
];
@NgModule({
  imports: [RouterModule.forChild(routes)],
  exports: [RouterModule]
})
export class PortfolioRoutingModule { }