[英]Angular loadChildren isn't doing anything
我将在PluralSight上学习有关Angular基础知识的课程,并使用用户模块和事件模块创建事件管理站点。 (该课程没有将事件管理放入功能模块中,而是由我自己完成的。)我按照说明在顶层路由中使用loadChildren让每个模块处理自己的路由:
app.routes.ts
import { Routes } from '@angular/router';
import { NotFoundComponent } from './utility/not-found.component';
export const appRoutes: Routes = [
{
path: 'events',
loadChildren: './events/events.module#EventsModule'
},
{ path: 'user', loadChildren: './user/user.module#UserModule'},
{ path: 'NotFound', component: NotFoundComponent },
{ path: '', redirectTo: '/events', pathMatch: 'full' },
{ path: '**', component: NotFoundComponent }
];
app.module.ts
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { RouterModule } from '@angular/router';
import { appRoutes } from './app.routes';
import { AppComponent } from './app.component';
import { SharedModule } from './common/shared.module';
import { NavBarComponent } from './nav/navbar.component';
import { EventService } from './events/event.service';
import { ToastrService } from './common/toastr.service';
import { NotFoundComponent } from './utility/not-found.component';
import { UserModule } from './user/user.module';
import { EventsModule } from './events/events.module';
@NgModule({
declarations: [
AppComponent,
NavBarComponent,
NotFoundComponent
],
imports: [
BrowserModule,
SharedModule,
EventsModule,
UserModule,
RouterModule.forRoot(appRoutes)
],
providers: [
EventService,
ToastrService
],
bootstrap: [AppComponent]
})
export class AppModule { }
然后,据推测,如果我希望/ events显示事件列表, / events / create显示用于输入新事件的页面, / events / 3显示ID = 3的事件的详细信息,下列。 根据该课程,在Angular自己对此主题的论述中得到佐证,我只应指定子路径,而忽略“事件”段,该段应该已经由应用程序级路由解决了。
来自event.routes.ts
export const eventRoutes: Routes = [
{ path: 'create', component: CreateEventComponent, canDeactivate: [UnsavedNewEventGuard] },
{ path: ':id', component: EventDetailsComponent, canActivate: [ValidEventGuard] },
{ path: '', component: EventsListComponent }
];
events.module.ts
import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { RouterModule } from '@angular/router';
import { eventRoutes } from './event.routes';
import { EventsListComponent } from './event-list/events-list.component';
import { CreateEventComponent } from './create-event/create-event.component';
import { EventThumbnailComponent } from './event-list/event-thumbnail.component';
import { EventDetailsComponent } from './event-details/event-details.component';
@NgModule({
declarations: [
EventsListComponent,
CreateEventComponent,
EventThumbnailComponent,
EventDetailsComponent,
],
imports: [
CommonModule,
RouterModule.forChild(eventRoutes)
]
})
export class EventsModule { }
这行不通。 而是直接显示路径/的事件列表(即, https:// localhost:4200 / ,它不会重定向)。 它不会路由到/ events,/ events / create或/ events / 3。
当我提供完整的路径,包括我认为我本不应该使用的“事件”部分时, 该应用程序便可以正常工作 :
event.routes.ts (版本2)
export const eventRoutes: Routes = [
{ path: 'events/create', component: CreateEventComponent, canDeactivate: [UnsavedNewEventGuard] },
{ path: 'events/:id', component: EventDetailsComponent, canActivate: [ValidEventGuard] },
{ path: 'events', component: EventsListComponent }
];
另外,也可以将子路径嵌套到“事件”的父路径下的子属性中:
event.routes.ts (版本3)
export const eventRoutes: Routes = [{
path: 'events', children: [
{ path: 'create', component: CreateEventComponent, canDeactivate: [UnsavedNewEventGuard] },
{ path: ':id', component: EventDetailsComponent, canActivate: [ValidEventGuard] },
{ path: '', component: EventsListComponent }
]
}];
但是无论版本2和3 是否起作用, 无论我的应用程序级路由文件中是否具有带有loadChildren属性的路由 。 该应用程序对此非常满意:
app.routes.ts (版本2)
import { Routes } from '@angular/router';
import { NotFoundComponent } from './utility/not-found.component';
export const appRoutes: Routes = [
{ path: 'NotFound', component: NotFoundComponent },
{ path: '', redirectTo: '/events', pathMatch: 'full' },
{ path: '**', component: NotFoundComponent }
];
基本上,将忽略loadChildren路由。 (同样适用于用户模块。)我不知道为什么。
您正在在app.module.ts上导入模块。 之所以“版本2和版本3”起作用的原因是,模块已导入AppModule
。 偷懒加载工作,你需要删除EventsModule
和UserModule
从您AppModule
:
@NgModule({
declarations: [...],
imports: [
BrowserModule,
SharedModule,
RouterModule.forRoot(appRoutes)
],
providers: [...],
bootstrap: [AppComponent]
})
export class AppModule { }
另外,您可能需要在添加新模块以延迟加载后重新运行ng serve
。
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