> For the complete documentation index, see [llms.txt](https://docs.aurelia.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aurelia.io/getting-started/extended-tutorial/step-6-route-data-and-roles.md).

# Step 6: Route data + auth roles

Optional step: This adds route data for role requirements and enforces it with a router hook. You will also add a small auth status widget to toggle the admin role in the UI. If you want to keep the tutorial beginner-friendly, you can stop after Step 5.

## 1. Create a tiny auth service

Create `src/services/auth-service.ts`:

```typescript
import { DI } from '@aurelia/kernel';

export type User = {
  name: string;
  roles: string[];
};

export const IAuthService = DI.createInterface<IAuthService>(
  'IAuthService',
  x => x.singleton(AuthService)
);

export interface IAuthService extends AuthService {}

export class AuthService {
  private user: User | null = { name: 'Taylor', roles: ['member'] };

  getCurrentUser(): User | null {
    return this.user;
  }

  hasRole(role: string): boolean {
    return !!this.user?.roles.includes(role);
  }

  toggleRole(role: string): void {
    if (!this.user) return;

    if (this.user.roles.includes(role)) {
      this.user = { ...this.user, roles: this.user.roles.filter(item => item !== role) };
      return;
    }

    this.user = { ...this.user, roles: [...this.user.roles, role] };
  }
}
```

## 2. Create a role-based router hook

Create `src/role-hook.ts`:

```typescript
import { resolve } from '@aurelia/kernel';
import { lifecycleHooks } from '@aurelia/runtime-html';
import { IRouteViewModel, Params, RouteNode } from '@aurelia/router';
import { IAuthService } from './services/auth-service';

@lifecycleHooks()
export class RoleHook {
  private readonly auth = resolve(IAuthService);

  canLoad(_viewModel: IRouteViewModel, _params: Params, next: RouteNode): boolean | string {
    const requiredRoles = next.data?.roles as string[] | undefined;
    const fallbackRoute = (next.data?.fallbackRoute as string | undefined) ?? 'forbidden';

    if (!requiredRoles || requiredRoles.length === 0) {
      return true;
    }

    const hasRequiredRole = requiredRoles.some(role => this.auth.hasRole(role));
    return hasRequiredRole ? true : fallbackRoute;
  }
}
```

Register the hook in `src/main.ts`:

```typescript
import Aurelia from 'aurelia';
import { RouterConfiguration } from '@aurelia/router';
import { MyApp } from './my-app';
import { RoleHook } from './role-hook';

Aurelia
  .register(
    RouterConfiguration.customize({ activeClass: 'is-active' }),
    RoleHook
  )
  .app(MyApp)
  .start();
```

## 3. Add protected routes with route data

Create `src/pages/admin-page.ts`:

```typescript
export class AdminPage {}
```

Create `src/pages/admin-page.html`:

```html
<import from="../components/app-shell"></import>

<app-shell>
  <h1 au-slot="title">Admin</h1>
  <a au-slot="actions" load="../dashboard">Back to Dashboard</a>

  <p>Only admins can access this page.</p>
</app-shell>
```

Create `src/pages/forbidden-page.ts`:

```typescript
export class ForbiddenPage {}
```

Create `src/pages/forbidden-page.html`:

```html
<import from="../components/app-shell"></import>

<app-shell>
  <h1 au-slot="title">Access denied</h1>
  <a au-slot="actions" load="../dashboard">Back to Dashboard</a>

  <p>You do not have permission to view that page.</p>
</app-shell>
```

Update `src/my-app.ts` to add route data:

```typescript
import { route } from '@aurelia/router';
import { AdminPage } from './pages/admin-page';
import { DashboardPage } from './pages/dashboard-page';
import { ForbiddenPage } from './pages/forbidden-page';
import { ProjectsPage } from './pages/projects-page';

@route({
  routes: [
    { path: ['', 'dashboard'], component: DashboardPage, title: 'Dashboard' },
    { path: 'projects', component: ProjectsPage, title: 'Projects' },
    {
      path: 'admin',
      component: AdminPage,
      title: 'Admin',
      data: {
        roles: ['admin'],
        fallbackRoute: 'forbidden'
      }
    },
    { path: 'forbidden', component: ForbiddenPage, title: 'Access denied' }
  ]
})
export class MyApp {}
```

## 4. Add an auth status widget

Create `src/components/auth-status.ts`:

```typescript
import { resolve } from '@aurelia/kernel';
import { IAuthService, User } from '../services/auth-service';

export class AuthStatus {
  private readonly auth = resolve(IAuthService);

  user: User | null = this.auth.getCurrentUser();

  toggleAdmin(): void {
    this.auth.toggleRole('admin');
    this.user = this.auth.getCurrentUser();
  }
}
```

Create `src/components/auth-status.html`:

```html
<section class="auth-status">
  <p if.bind="user">
    Signed in as ${user.name}. Roles: ${user.roles.join(', ')}
  </p>
  <p if.bind="!user">Signed out.</p>

  <button click.trigger="toggleAdmin()">Toggle Admin Role</button>
</section>
```

Update `src/pages/dashboard-page.html` to show it:

```html
<import from="../components/app-shell"></import>
<import from="../components/auth-status"></import>

<app-shell>
  <h1 au-slot="title">Dashboard</h1>
  <a au-slot="actions" load="../projects">View Projects</a>

  <p>Welcome to Project Pulse. Use the Projects page to manage tasks.</p>

  <auth-status></auth-status>
</app-shell>
```

Finally, add the Admin link in `src/my-app.html`:

```html
<nav class="main-nav">
  <a load="dashboard">Dashboard</a>
  <a load="projects">Projects</a>
  <a load="admin">Admin</a>
</nav>

<au-viewport></au-viewport>
```

## Recap

* Route `data` carries the `roles` requirement.
* The `RoleHook` reads `next.data` and redirects to `forbidden` if roles are missing.
* `activeClass` keeps the main nav styled for the active route.

Back to: [Extended Tutorial overview](/getting-started/extended-tutorial.md)


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.aurelia.io/getting-started/extended-tutorial/step-6-route-data-and-roles.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.