I have a Simple Angular 2 App with a Module(InformationPagesModule module) that contains two lazy load components (Info1 Component and Info2 Component). I want to load that components when entering the following routes in the browser:
http://localhost:4200/info1 - Loads the Info1Component
http://localhost:4200/info2 - Loads the Info2Component
here the interest classes:
app.component.html
<router-outlet></router-outlet>
app.module.ts
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { HomeComponent } from './home/home.component';
import { InformationPagesModule } from './information-pages/information-pages.module';
#NgModule({
declarations: [
AppComponent,
HomeComponent
],
imports: [
BrowserModule,
AppRoutingModule,
SharedModule,
InformationPagesModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
app-routing.module.ts
import { NgModule } from '#angular/core';
import { Routes, RouterModule, Router } from '#angular/router';
import { HomeComponent } from './home/home.component';
const routes: Routes = [
{path:'', component: HomeComponent},
{path:'info1', loadChildren: './information-pages/information-pages.module#InformationPagesModule'},
{pathMatch:'full', path:'info2', loadChildren: './information-pages/information-pages.module#InformationPagesModule'},
{ path: '**', redirectTo: '' }
];
#NgModule({
imports: [RouterModule.forRoot(routes)],
exports: [RouterModule],
})
export class AppRoutingModule { }
information-pages.module.ts
import { NgModule } from '#angular/core';
import { CommonModule } from '#angular/common';
import { InformationPagesRoutingModule } from './information-pages-routing.module';
import { Info1Component } from './info1/info1.component';
import { Info2Component } from './info2/info2.component';
#NgModule({
imports: [
CommonModule,
InformationPagesRoutingModule
],
declarations: [Info1Component, Info2Component]
})
export class InformationPagesModule { }
information-pages-routing.module.ts
import { NgModule } from '#angular/core';
import { Routes, RouterModule } from '#angular/router';
import { Info1Component } from './info1/info1.component';
import { Info2Component } from './info2/info2.component';
const routes: Routes = [
{path:'info1', component: Info1Component},
{path:'info2', component: Info2Component}
];
#NgModule({
imports: [RouterModule.forChild(routes)],
exports: [RouterModule]
})
export class InformationPagesRoutingModule { }
My question is, why when entering some of the routes / info1 or / info2, a blank page is displayed?
How should I configure the routes in my application so that it works?
Many Thanks!
In your app-routing.module.ts you want to declare one parent route to all routes of one lazy loaded module. That means you might want to map all routes starting with /info to your information-pages-routing.module.ts. The routes to your components (info1 and info2) you'll declare inside the lazy loaded module.
app-routing.module.ts
import { NgModule } from '#angular/core';
import { Routes, RouterModule, Router } from '#angular/router';
import { HomeComponent } from './home/home.component';
const routes: Routes = [
{ path:'', component: HomeComponent },
{ path: 'info', loadChildren: './information-pages/information-pages.module#InformationPagesModule' },
{ path: '**', redirectTo: '' }
];
#NgModule({
imports: [RouterModule.forRoot(routes)],
exports: [RouterModule],
})
export class AppRoutingModule { }
The file information-pages-routing.module.ts stays the same
import { NgModule } from '#angular/core';
import { Routes, RouterModule } from '#angular/router';
import { Info1Component } from './info1/info1.component';
import { Info2Component } from './info2/info2.component';
const routes: Routes = [
{path:'info1', component: Info1Component},
{path:'info2', component: Info2Component}
];
#NgModule({
imports: [RouterModule.forChild(routes)],
exports: [RouterModule]
})
export class InformationPagesRoutingModule { }
You'll now be able to access the Info1Component by the route /info/info1 and the Info2Component by the route /info/info2. If you wish to access your compoents by the routes /info1 and /info2 you can either create two lazy loaded modules or just redirect /info1 to /info/info1
You might also consider loading child modules like this:
{ path: 'info', loadChildren: () => import('./information-pages/information-pages.module').then(m => m.InformationPageModule) }
Rather than
{ path: 'info', loadChildren: './information-pages/information-pages.module#InformationPagesModule' }
For more information please refer to the official documentation https://angular.io/guide/lazy-loading-ngmodules
Use this way instead of using module level routing, use AppRoutingModule for routing your components.
import { NgModule } from '#angular/core';
import { Routes, RouterModule, Router } from '#angular/router';
import { HomeComponent } from './home/home.component';
import { Info1Component } from './info1/info1.component';
import { Info2Component } from './info2/info2.component';
const routes: Routes = [
{path:'', component: HomeComponent},
{path:'info1', component: Info1Component},
{path:'info2', component: Info2Component},
{ path: '**', redirectTo: '' }
];
#NgModule({
imports: [RouterModule.forRoot(routes)],
exports: [RouterModule],
})
export class AppRoutingModule { }
If you use this information-pages-routing.module.ts is not required any more.
Related
I have an angular application with a login component
this component is under app/main/login
I want to go to it from app.component.html via the button
Here is my app-routing.module code
import { NgModule } from '#angular/core';
import { Routes, RouterModule } from '#angular/router';
import { LoginComponent } from './main/login/login.component';
const routes: Routes = [
{ path: 'main', children: [{ path: 'login', component: LoginComponent }] },
];
#NgModule({
imports: [RouterModule.forRoot(routes)],
exports: [RouterModule],
})
export class AppRoutingModule {}
Here is how I try to use route <button mat-raised-button class="btn-default" [routerLink]="['/main/login']">Log in</button>
Here is app.module.ts code
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import {MatButtonModule} from '#angular/material/button';
import {MainModule} from './main/main.module'
#NgModule({
declarations: [
AppComponent
],
imports: [
BrowserModule,
AppRoutingModule,
MatButtonModule,
MainModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
and here is main.module.ts
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { LoginComponent } from './login/login.component';
#NgModule({
declarations: [LoginComponent],
imports: [BrowserModule],
providers: [],
bootstrap: [],
})
export class MainModule {}
When I click the button, the URL changing to http://localhost:4200/main/login but the view not changed.
How I can fix this?
Looking at your code it seems that you are trying to load component using lazy-loading technique.
So in AppRoutingComponent.ts file, instead of what your code replace it with :
const routes: Routes = [
{ path: 'main', loadChildren: '(path to main module)/main.module#MainModule' },
];
In layman terms this just tells the parent routing module to load the main.module when main path is encountered
Now In Main.module, configure child routes as:
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { LoginComponent } from './login/login.component';
const routes: Routes = [
{ path: 'login', component: LoginComponent }
];
#NgModule({
declarations: [LoginComponent],
imports: [
BrowserModule,
RouterModule.forChild(routes) // Register routes for child module via forChild function instead of for Root
],
providers: [],
bootstrap: [],
})
export class MainModule {}
I have a problem and I don't know what I'm not seeing.
I have equis Modules
ComponentsHomeModule, a file where I have a component that I would like to share
import { NgModule } from '#angular/core';
import { ElementComponent } from './element/element.component';
import { CommonModule } from '#angular/common';
#NgModule({
imports: [CommonModule],
declarations: [ElementComponent],
exports: [ElementComponent],
})
export class ComponentsHomeModule {}
In this case, the component is ElementComponent, that's the component I want to share.
Then I have my ElementsModule where I want to use the ElementComponent
import { NgModule } from '#angular/core';
import { CommonModule } from '#angular/common';
import { ElementsRoutingModule } from './elements-routing.module';
import { ElementsComponent } from './elements.component';
import { ComponentsHomeModule } from '../../components/components-home.module';
#NgModule({
imports: [CommonModule, ComponentsHomeModule, ElementsRoutingModule],
declarations: [ElementsComponent],
})
export class ElementsModule {}
an then inside the ElementsComponent I'm trying to render the ElementComponent but when I make in my html
ElementsComponent html:
<app-element></app-element>
In the console I see the error of
ERROR in src/app/home/pages/elements/elements.component.html:15:7 - error TS8001: 'app-element' is not a known element:
1. If 'app-element' is an Angular component, then verify that it is part of this module
I don't know where is the error because if I have my component imported and exported into the ComponentsHomeModule and then I'm importing that module all should work.
By the way I tried with import the ComponentsHomeModule into the App.Module and nothing and the Module where I'm using the ComponentsHomeModule is used in a lazy load:
import { Routes, RouterModule } from '#angular/router';
import { HomeComponent } from './home.component';
import { ElementsRoutingModule } from './pages/elements/elements-routing.module';
const routes: Routes = [
{
path: '',
component: HomeComponent,
children: [
{
path: '',
redirectTo: 'elements',
},
{
path: 'elements',
loadChildren: () => ElementsRoutingModule,
}
],
},
];
#NgModule({
imports: [RouterModule.forChild(routes)],
exports: [RouterModule],
})
export class HomeRoutingModule {}
SOLVED::
The problem was in the importing of the lazy loading.
I was importing the RoutingMoudule instead of only the module
import { NgModule } from '#angular/core';
import { Routes, RouterModule } from '#angular/router';
import { HomeComponent } from './home.component';
import { ElementsModule } from './pages/elements/elements.module';
const routes: Routes = [
{
path: '',
component: HomeComponent,
children: [
{
path: '',
redirectTo: 'elements',
},
{
path: 'elements',
loadChildren: () => ElementsModule,
}
],
},
];
#NgModule({
imports: [RouterModule.forChild(routes)],
exports: [RouterModule],
})
export class HomeRoutingModule {}
Your ElementsComponent is part of ElementsModule, so if you want to use ElementsComponent in ComponentsHomeModule then you need to exports ElementsComponent form ElementsModule, not from ComponentsHomeModule.
I want to lazy load a module in the angular 2+ application.For that in 'app-routing.module' file I have following code.
import { NgModule } from '#angular/core';
import { Routes, RouterModule } from '#angular/router';
import { AbcdComponent } from './abcd/abcd.component';
const routes: Routes = [
{ path: 'portfolio', loadChildren: './lazy.module#LazyModule'},
{ path: 'dashboard', loadChildren: './lazy.module#LazyModule'},
{ path: 'abcd', component:AbcdComponent}
];
#NgModule({
imports: [RouterModule.forRoot(routes)],
exports: [RouterModule],
declarations: [
AbcdComponent
]
})
export class AppRoutingModule { }
Now, in Lazy Module I have the following code:
import { NgModule } from '#angular/core';
import { CommonModule } from '#angular/common';
import { LazyParentComponent } from './lazy-parent/lazy-parent.component';
import { LazyChildComponent } from './lazy-child/lazy-child.component';
import { Routes, RouterModule } from '#angular/router';
const routes: Routes = [
{ path: 'load-me', component: DashBoardComponent },
{ path: 'load-you', component: PortfolioComponent }
];
#NgModule({
imports: [
CommonModule,
RouterModule.forChild(routes)
],
declarations: [
LazyParentComponent,
LazyChildComponent,
]
})
export class LazyModule { }
This is good enough to route https://example.com/portfolio/load-me to DashBoardComponent and https://example.com/portfolio/load-you to PortfolioComponent.
But the issue is I want to have a lazy module and for route like this https://example.com/portfolio I want to point to PortfolioComponent and https://example.com/dashboard to DashBoardComponent. Both components should be lazily loaded .Also, both components are in same module.I searched through internet but could not get any solution.Any help is appreciated.
That won't work. For each route inside of the AppRoutingModule, there needs to be its own module & and routing. So for example:
Dashboard Routes:
import { NgModule } from '#angular/core';
import { Routes, RouterModule } from '#angular/router';
import { DashboardComponent } from 'some path';
export const DashboardRoutes: Routes = [
{ path: '', component: DashboardComponent }
];
#NgModule({
imports: [
RouterModule.forChild(DashboardRoutes)
],
exports: [RouterModule],
declarations: [],
providers: [],
})
export class DashboardRoutingModule { }
Dashboard Module:
#NgModule({
imports: [DashboardRoutingModule]
})
export class DashboardModule { }
App Routes:
export const routes: Routes = [
{ path: 'portfolio', loadChildren: './PathTooPortfolio#PortfolioModule'},
{ path: 'dashboard', loadChildren: './PathToDashboard#DashboardModule'},
{ path: 'abcd', component:AbcdComponent}
];
Just setup Portfolio the same way as I have Dashboard.
I am currently attempting to add routing to my Angular 2 project. All of the components work, but when I add 'appRoutes' to my imports on app.module.ts , an error gets thrown saying
Uncaught TypeError: Cannot set property 'stack' of undefined
Here is my code:
app.module.ts
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { FormsModule } from '#angular/forms';
import { HttpModule } from '#angular/http';
import { appRoutes } from './app.router';
import { AppComponent } from './app.component';
import { NavigationComponent } from './navigation/navigation.component';
import { AboutComponent } from './about/about.component';
import { ResumeComponent } from './resume/resume.component';
import { WorkComponent } from './work/work.component';
import { BlogComponent } from './blog/blog.component';
import { HomeComponent } from './home/home.component';
#NgModule({
declarations: [
AppComponent,
NavigationComponent,
AboutComponent,
ResumeComponent,
WorkComponent,
BlogComponent,
HomeComponent
],
imports: [
appRoutes,
BrowserModule,
FormsModule,
HttpModule
],
providers: [],
bootstrap: [AppComponent, NavigationComponent, AboutComponent,
ResumeComponent, WorkComponent, BlogComponent, HomeComponent]
})
export class AppModule { }
app.router.ts
import { ModuleWithProviders } from '#angular/core';
import { Routes, RouterModule } from '#angular/router';
import { AppComponent } from './app.component';
import { AboutComponent } from './about/about.component';
import { ResumeComponent } from './resume/resume.component';
import { WorkComponent } from './work/work.component';
import { BlogComponent } from './blog/blog.component';
import { HomeComponent } from './home/home.component';
export const appRoutes: Routes =[
{ path: '', redirectTo: 'home', pathMatch: 'full' },
{ path: 'about', component: AboutComponent },
{ path: 'resume', component: ResumeComponent },
{ path: 'work', component: WorkComponent },
{ path: 'blog', component: BlogComponent },
{ path: 'home', component: HomeComponent }
];
export const routes: ModuleWithProviders = RouterModule.forRoot(appRoutes);
Any help would be appreciated. The page works until I add the appRoutes import, then it just sits on Loading...
You should not need ModuleWithProviders. Remove that from:
export const routes: ModuleWithProviders = RouterModule.forRoot(appRoutes);
i.e.
export const routes: RouterModule.forRoot(appRoutes);
and see if it works. (Also clean up by removing the import).
I was able to find the solution to my own problem. I deleted every component from bootstrap: [...] besides the AppComponent, but kept the other components in the declarations and it fixed the problem.
I try to use Lazyload routes but nested. But i still get the error that it do not find the module in the 2 level route.
Here is my construct:
app.module.ts:
import { BrowserModule } from '#angular/platform-browser';
import { NgModule } from '#angular/core';
import { FormsModule } from '#angular/forms';
import { HttpModule } from '#angular/http';
import { routing } from './app.routes';
import { AppComponent } from './app.component';
import { RouterModule } from '#angular/router';
#NgModule({
declarations: [
AppComponent,
AuthComponent
],
imports: [
BrowserModule,
FormsModule,
HttpModule,
routing
],
exports: [RouterModule],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
app.routes.ts
import { Router, RouterModule} from '#angular/router';
import { AuthGuard } from './Auth/Services/auth-guard.service';
import { AuthComponent } from './Auth/auth.component';
export const routing = RouterModule.forRoot([
{ path: '', redirectTo: "portal", pathMatch: 'full'},
{ path: 'portal', loadChildren: './Portal/portal.module#PortalModule'},
{ path: '**', redirectTo: "portal"}
])
Portal/portal.module.ts:
import { NgModule } from '#angular/core';
import { routing } from './portal.routes';
import { PortalComponent } from './portal.component';
import { FormsModule,ReactiveFormsModule } from '#angular/forms';
import { RouterModule } from '#angular/router';
import { CommonModule } from '#angular/common';
#NgModule({
imports: [
CommonModule,
FormsModule,
ReactiveFormsModule,
routing
],
exports: [ RouterModule ],
declarations: [
PortalComponent
],
providers: [
]
})
export class PortalModule { }
Portal/portal.routes.ts:
import { Router, RouterModule} from '#angular/router';
import { PortalComponent } from './portal.component';
export const routing = RouterModule.forChild([
{ path: '', redirectTo: "reports"},
// This Part doesn't work
{ path: 'reports', component: PortalComponent, loadChildren: './Portal/Test/test.module#TestModule'},
// --
{ path: '**',component: PortalComponent, pathMatch: 'full'}
])
Portal/Test/test.module.ts:
import { NgModule } from '#angular/core';
import { routing } from './test.routes';
import { TestComponent } from './test.component';
import { FormsModule,ReactiveFormsModule } from '#angular/forms';
import { RouterModule } from '#angular/router';
import { CommonModule } from '#angular/common';
#NgModule({
imports: [
CommonModule,
FormsModule,
ReactiveFormsModule,
routing
],
exports: [ RouterModule ],
declarations: [
TestComponent
],
providers: [
]
})
export class TestModule { }
Portal/Test/test.routes:
import { Router, RouterModule} from '#angular/router';
import { TestComponent } from './test.component';
export const routing = RouterModule.forChild([
{ path: '', redirectTo: "reports"},
{ path: 'reports', component: TestComponent},
])
My error:
EXCEPTION: Uncaught (in promise): Error: Cannot find module './Portal/Test/test.module'.
Error: Cannot find module './Portal/Test/test.module'.
My Question is now why he do not find the Module ?
I tried also other Paths but this i the only one which can really work i think.
What i need to do to fix or is angular 2 not able to do this ?
(The error is just testet with ng serve not with build | Testet with Chrome)
Not sure if this could help but the way I do modules is to name every module file index.ts and just specify the path to the folder when referencing them. I have never had any issues with modules not being found. Have a look at https://github.com/AngularClass/angular2-webpack-starter/tree/master/src/app for an example in how to load async modules.
This issue was on the old #angular/router i updated now to the 3.2.0 befor i had 3.1.0