Angular 9 嵌套延迟加载模块，带有嵌套路由器出口

Question

我正在尝试使用 Angular 9 开发 SPA，我几乎尝试延迟加载每个组件及其所有子组件。当我尝试在一个延迟加载的组件中使用路由器插座并且我希望此路由器插座用于加载子组件（这也是延迟加载的）时，我的问题出现了。 当我这样做时，我总是将所有嵌套的延迟加载组件加载到 app.component.html 的主路由器插座中，而不是嵌套延迟加载组件中的路由器插座

app.component 模板：

<app-navbar></app-navbar>
<router-outlet></router-outlet>

app-routing.module:

const routes: Routes = [
  { path: '', component: HomeComponent },
  { path: 'login', component: LoginComponent },
  { path: 'articles', loadChildren: () => import('./articles-viewer/articles-viewer.module').then(m => m.ArticlesViewerModule) },
  { path: 'dashboard', loadChildren: () => import('./dashboard/dashboard.module').then(m => m.DashboardModule) },
  { path: '**', redirectTo: ''}
];

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

app.module:

@NgModule({
  declarations: [
    AppComponent,
    HomeComponent,
    LoginComponent,
    NavbarComponent,
  ],
  imports: [
    BrowserModule,
    AppRoutingModule,
    HttpClientModule,
    BrowserAnimationsModule,
    AppAngularMaterial
  ],
  providers: [
    AppHttpInterceptors
  ],
  bootstrap: [AppComponent]
})
export class AppModule { }

navbar.component 模板：

<a routerLink="">Home</a>
<a routerLink="/articles">Articles</a>
<a routerLink="/dashboard">Dashboard</a>

仪表板模板：

<a routerLink="statistics">Statistics</a>
<router-outlet></router-outlet>

dashboard.module：

@NgModule({
  declarations: [DashboardComponent],
  imports: [
    CommonModule,
    DashboardRoutingModule,
    AppAngularMaterial
  ]
})
export class DashboardModule { }

dashboard-routing.module:

const routes: Routes = [
  { path: '', component: DashboardComponent },
  { path: 'statistics', loadChildren: () => import('./statistics/statistics.module').then(m => m.StatisticsModule) }
  ];

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

简而言之，统计组件（一个延迟加载的组件）被加载到 app.component 模板中声明的 router-outlet 中，而不是仪表板模板中的 router-outlet 中，并且仪表板组件被卸载

我试图在 angular.io 中找到解决方案，但我得到的只是在同一个组件中管理多个插座。另外，这是我在谷歌上搜索这个问题时得到的。

有什么解决办法吗？

Answer 1

我遇到了类似的问题！我这边的问题是我导入了延迟加载的模块，因此路由定义对于应用程序路由器出口是可见的。

如果您需要示例，请随时发表评论。

更新：2021-08-24 添加了完整代码示例

下面的例子可以无限扩展：

文件夹结构：

1 应用程序模块：

import { NgModule } from "@angular/core";
import { BrowserModule } from "@angular/platform-browser";

import { CoreModule } from "@core/core.module";
import { AppRoutingModule } from "@routes/app-routing.module";

import { AppComponent } from "./app.component";

import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

@NgModule({
  declarations: [AppComponent],
  imports: [BrowserModule, CoreModule, AppRoutingModule, BrowserAnimationsModule],
  providers: [],
  bootstrap: [AppComponent],
})
export class AppModule {}

2 应用程序组件：

import { Component } from "@angular/core";

@Component({
  selector: "rot-root",
  template: ` <router-outlet></router-outlet> `, // <===== ROOT ROUTER-OUTLET
  styleUrls: ["./app.component.scss"],
})
export class AppComponent {}

3 app-routing.module:

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

export const ROUTES: Routes = [
  {
    path: "",
    pathMatch: "prefix",
    loadChildren: () =>
      import("./main/main-routing.module").then((m) => m.MainRoutingModule),
  },
];

@NgModule({
  declarations: [],
  imports: [
    RouterModule.forRoot(ROUTES, { enableTracing: false })
  ],
  exports: [RouterModule],
})
export class AppRoutingModule {}

4 main-routing.module:

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

import { layoutModules } from "./layouts";

import { MainLayoutViewComponent } from "./layouts/main-layout/views";

export const SUBROUTES: Routes = [
  {
    path: "",
    pathMatch: "prefix",
    component: MainLayoutViewComponent, // <==== DISPLAYED IN ROOT ROUTER-OUTLET
    children: [ // <==== CHILDREN ARE DISPLAYED IN SUB ROUTER-OUTLET (6)
      {
        path: "dashboard",
        loadChildren: () => import("./dashboard/dashboard.module").then(m => m.DashboardModule)
      },
      // <==== A LOT OF ROUTES FROM THE MAIN FOLDER - SAME AS DASHBOARD ====>
    ],
  },
];

@NgModule({
  declarations: [],
  imports: [
    RouterModule.forChild(SUBROUTES),
    ...layoutModules
  ],
  exports: [RouterModule],
})
export class MainRoutingModule {}

5 main-layout.module:

import { NgModule } from "@angular/core";
import { SharedModule } from "@shared/shared.module";

// material modules
// <==== a lot of material imports :D ====>

// module components
import { views } from "./views"; // <===== HERE I IMPORT THE MAIN-LAYOUT-VIEW
import { containers } from "./containers";
import { components } from "./components";

@NgModule({
  declarations: [...views, ...containers, ...components],
  imports: [
    SharedModule,
    // <==== a lot of material imports :D ====>
  ],
})
export class MainLayoutModule {}

6 main-layout-view.component:

import { Component, OnInit } from "@angular/core";

import { Observable } from "rxjs";

import { SidenavService } from "@core/services";

@Component({
  selector: "rot-main-layout-view",
  template: `
    <rot-main-navbar></rot-main-navbar>
    <mat-drawer-container autosize hasBackdrop>
      <mat-drawer mode="over" [opened]="opened$ | async">
        <rot-main-sidenav></rot-main-sidenav>
      </mat-drawer>
      <div class="content-wrapper">
        <router-outlet></router-outlet>          <==== SUB ROUTER-OUTLET
      </div>
    </mat-drawer-container>
  `,
  styleUrls: ["./main-layout-view.component.scss"],
})
export class MainLayoutViewComponent implements OnInit {

  constructor(private _sidenavService: SidenavService) {}

  ngOnInit(): void {}

  get opened$(): Observable<boolean> {
    return this._sidenavService.opened$;
  }
}

Answer 2

在dashboard-routing.module中

而不是这个：

const routes: Routes = [
    { path: '', component: DashboardComponent },
    { path: 'statistics', loadChildren: () => 
        import('./statistics/statistics.module').then(m => m.StatisticsModule)
    }
];

这样做：

const routes: Routes = [
    { path: '', component: DashboardComponent,
      children: [
          { path: 'statistics', loadChildren: () => 
           import('./statistics/statistics.module').then(m => m.StatisticsModule)
          }
      ]
    }
];