Troubleshooting the issue with default useAsDefault routing in Angular 2

I have implemented Angular 2 for routing and Node for local hosting.

However, I encountered an issue where using 'useAsDefault:true' for my route caused the nav bar links to stop functioning properly. The URL would redirect to http://localhost/ (Blank Page) instead of http://localhost/home.

Upon removing the flag, the nav bar worked correctly and I was able to navigate to the /home route without encountering the blank page error.

Can someone help me understand why the default flag is not behaving as expected?

App.Component.ts

@RouteConfig([
  { path: '/home', name: 'Home', component: HomeComponent /*, useAsDefault : true */},
  { path: '/articles', name: 'Posts', component: PostsComponent  },
  { path: '/detail/:id', name: 'PostDetail', component: PostDetailComponent },
  { path: '/login', name: 'Login', component: LoginComponent  },
])

App.Component.html

<ul class="topnav">
  <li><a [routerLink]="['Home']">Home</a></li>
  <li><a [routerLink]="['Posts']">Articles</a></li>
  <li><a href="#p">Publisher</a></li>
  <li><a [routerLink]="['Login']">Login</a></li>
</ul>

<router-outlet></router-outlet>

Main.ts

import { bootstrap }    from '@angular/platform-browser-dynamic';
import { AppComponent } from './app.component';

import { HTTP_PROVIDERS } from '@angular/http';
import { ROUTER_PROVIDERS } from '@angular/router-deprecated';

bootstrap(AppComponent,  [ROUTER_PROVIDERS, HTTP_PROVIDERS]);

index.html

<html>
  <head>
    <script>document.write('<base href="' + document.location + '" />');</script>
    <title>Blog</title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="styles/styles.css">

     <!-- Polyfill(s) for older browsers -->
    <script src="node_modules/core-js/client/shim.min.js"></script>
    <script src="node_modules/zone.js/dist/zone.js"></script>
    <script src="node_modules/reflect-metadata/Reflect.js"></script>
    <script src="node_modules/systemjs/dist/system.src.js"></script>

    <!-- 2. Configure SystemJS -->
    <script src="systemjs.config.js"></script>
    <script>
      System.import('app').catch(function(err){ console.error(err); });
    </script>
  </head>

  <!-- 3. Display the application -->
  <body>
    <blog-app>Blog Loading...</blog-app>
  </body>
</html>

Answer №1

To ensure that all undefined routes redirect to the home route, simply create a route for each specific route being accessed:

@RouteConfig([
  { path: '/home', name: 'Home', component: HomeComponent },
  { path: '/articles', name: 'Posts', component: PostsComponent },
  { path: '/detail/:id', name: 'PostDetail', component: PostDetailComponent },
  { path: '/login', name: 'Login', component: LoginComponent },
  { path: '/**', redirectTo: ['Home'] }
])

Answer №2

Apologies for the potential delay:

useAsDefault is now considered deprecated, please use the following instead:

const appRoutes: Routes = [
  { path: 'crisis-center', component: CrisisListComponent },
  { path: 'heroes',        component: HeroListComponent },
  { path: '',   redirectTo: '/heroes', pathMatch: 'full' },
  { path: '**', component: PageNotFoundComponent }
];

For more information, check out the official documentation: https://angular.io/docs/ts/latest/guide/router.html

Answer №3

By utilizing the useasdefault feature, you are essentially establishing a parent route with child routes nested within it.

localhost:8000/dashboard/dashboard
localhost:8000/dashboard/settings

In this setup, the two URL routes will be organized under a parent URL structure like so:

{path: '/dashboard/...', component:Dashboard}

Within the Dashboard component, you can then define the dashboard root and the settings route as child routes in the following manner:

{path: 'dashboard', component:DashboardAdmin, useAsDefault: True}
{path: 'settings', component:Settings}

In your specific scenario, consider what needs to be grouped together. For example, home, article, and detail could all fall under one parent URL:

{path: '/home/...' component: HomeDataComponent}
{ path: '/login', name: 'Login', component: LoginComponent  },

You can then transfer these three URL configurations into HomeDataComponent or another designated section:

@RouteConfig([
{ path: '/home', name: 'Home', component: HomeComponent , useAsDefault : true},
{ path: '/articles', name: 'Posts', component: PostsComponent  },
{ path: '/detail/:id', name: 'PostDetail', component: PostDetailComponent },
])

Remember that when employing useAsDefault, ensure that the parent route is specified along with marking the designated child route with useAsDefault for it to appear first.

For further insights, refer to this link. Hopefully, this explanation proves helpful.

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