Angular is experiencing difficulty locating the routing path for the auxiliary `router-outlet`

Exploring the intricacies of routing in Angular to gain a deeper understanding of the concept. Encountering an issue where I am receiving an exception

NG04002: Cannot match any routes. URL Segment: 'about'
when attempting to click on the About link, which is meant to route to an auxiliary router-outlet named outlet1. The primary router-outlet functions correctly, so it's puzzling why there is resistance in routing to the auxiliary outlet.  Below is my app.component.html:

<div style="text-align:center">
  <h1>
    Welcome to {{title}}!!
  </h1>
  <nav>
    <div class="container">
      <div class="row">
        <div class="col-2">
          <a routerLink="home" routerLinkActive="active"><button type="button" class="btn btn-primary">
              Home</button></a>
        </div>
        <div class="col-2">
          <a routerLink="about"><button type="button" class="btn btn-primary">
              About</button></a>
        </div>

        <div class="col-1">
          <a routerLink="dashboard"><button type="button" class="btn btn-primary">
              Dashboard</button></a>
        </div>
      </div>
    </div>
</nav>
  <router-outlet></router-outlet>
  <div >
    <button type="button" class="btn btn-primary">Primary</button>
    <button type="button" class="btn btn-secondary">Secondary</button>
    <button type="button" class="btn btn-success">Success</button>
    <button type="button" class="btn btn-danger">Danger</button>
    <button type="button" class="btn btn-warning">Warning</button>
    <button type="button" class="btn btn-info">Info</button>
    <button type="button" class="btn btn-light">Light</button>
    <button type="button" class="btn btn-dark">Dark</button>

    <button type="button" class="btn btn-link">Link</button>
  </div>
</div>
<router-outlet name="outlet1"></router-outlet>

Furthermore, here is my app-routing.module.ts:

import { NgModule } from '@angular/core';
import { RouterModule, Routes } from '@angular/router';
import { HomeComponent } from './components/home/home.component';
import { AboutComponent } from './components/about/about.component';
import { DashboardComponent } from './components/dashboard/dashboard.component';
import { AuthGuard } from './auth.gard';

const routes: Routes = [
  { path: 'home',
    component: HomeComponent
  },
  {
    path: 'about', canActivate: [AuthGuard],
    component: AboutComponent, outlet:"outlet1",
  },
  { path: 'dashboard',
    component: DashboardComponent
  }];

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

Answer №1

A different syntax is required for the routerLink to specify the outlet.

By default, navigation goes to the primary routing/primary router-outlet (

<router-outlet></router-outlet>
)

To access the secondary routing/secondary router-outlet, use a different approach:

<router-outlet name="outlet1"></router-outlet>

Define it in this way: [routerLink]="['', { outlets: { outlet1: ['about'] } }]"

  1. The primary route - set to '' since we are not navigating away from the current route

  2. The outlets object specifies all outlet navigations needed

  3. outlet1 - denotes the name of the secondary outlet to navigate

  4. Navigate to the 'about' path in the named route

Additional Resources:

  1. More about Router Link

  2. Displaying multiple routes in named outlets

  3. Information on Router Outlet

Previous Code Snippet:

<a routerLink="about"><button type="button" class="btn btn-primary">
          About</button></a>

Updated Code Snippet:

<a [routerLink]="['', { outlets: { outlet1: ['about'] } }]"><button type="button" class="btn btn-primary">
          About</button></a>

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