Datta Angular
v4.1.0
v4.1.0
  • ✨Introduction
  • 🌐Quick Installation
  • 📂Directory Structure
  • 📄Page Structure
  • 🛠️Theme Configuration
  • 🎨Theme Layouts
  • ✏️How to
    • Dashboard as First Page
    • Remove Authentication
    • Remove Role Base Authentication
    • Guard Children Routes
    • Role-Based Authentication
  • 📦Dependencies
  • 🆘Support
  • 📅Changelog
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  1. How to

Role-Based Authentication

The system ensures only authorized users can access specific routes based on their assigned roles.

  1. The main routing file defines route paths and lazy-loaded modules for various components based on the user's role.

src/app/app-routing.module.ts
...
{
    path: '',
    component: AdminLayout,
    canActivateChild: [AuthGuardChild],
    children: [
      {
        path: 'dashboard',
        loadChildren: () => import('./demo/dashboard/dashboard.module').then((m) => m.DashboardModule),
        data: { roles: [Role.Admin, Role.User] }
      },
      {
        path: 'widget/statistics',
        loadComponent: () => import('./demo/widget/statistics/statistics.component').then((c) => c.StatisticsComponent),
        data: {
          roles: [Role.Admin, Role.User]
        }
      },
    ]
}
...
  1. Child Routing Module: Defines the child routes and applies role-based access.

src/app/demo/dashboard/dashboard-routing.module.ts
const routes: Routes = [
  {
    path: '',
    children: [
      {
        path: 'default',
        loadComponent: () => import('./default/default.component').then((c) => c.DefaultComponent),
        data: { roles: [Role.Admin, Role.User] }
      },
      {
        path: 'e-commerce',
        loadComponent: () => import('./e-commerce/e-commerce.component').then((c) => c.ECommerceComponent),
        data: { roles: [Role.Admin, Role.User] }
      },
      {
        path: 'crm',
        loadComponent: () => import('./dash-crm/dash-crm.component').then((c) => c.DashCrmComponent),
        data: { roles: [Role.Admin, Role.User] }
      },
      {
        path: 'analytics',
        loadComponent: () => import('./dash-analytics/dash-analytics.component').then((c) => c.DashAnalyticsComponent),
        data: { roles: [Role.Admin, Role.User] }
      },
      {
        path: 'crypto',
        loadComponent: () => import('./dash-crypto/dash-crypto.component').then((c) => c.DashCryptoComponent),
        data: { roles: [Role.Admin, Role.User] }
      },
      {
        path: 'project',
        loadComponent: () => import('./dash-project/dash-project.component').then((c) => c.DashProjectComponent),
        data: { roles: [Role.Admin, Role.User] }
      },
      {
        path: 'finance',
        loadComponent: () => import('./finance/finance.component').then((c) => c.FinanceComponent),
        data: { roles: [Role.Admin] }
      }
    ]
  }
];
  1. Role Management

src/app/theme/shared/_helpers/role.ts
export enum Role {
  User = 'User',
  Admin = 'Admin'
}
  1. Authentication Guard: This AuthGuardChild ensures that users can only access authorized routes.

src/app/theme/shared/_helpers/auth.guard.ts
import { Injectable, inject } from '@angular/core';
import { Router, ActivatedRouteSnapshot, RouterStateSnapshot, CanActivateChild } from '@angular/router';

import { AuthenticationService } from '../service/authentication.service';

@Injectable({ providedIn: 'root' })
export class AuthGuardChild implements CanActivateChild {
  private router = inject(Router);
  private authenticationService = inject(AuthenticationService);

  canActivateChild(route: ActivatedRouteSnapshot, state: RouterStateSnapshot) {
    const currentUser = this.authenticationService.currentUserValue;
    if (currentUser && this.authenticationService.isLoggedIn()) {
      const { roles } = route.data;
      if (roles && !roles.includes(currentUser.user.role)) {
        // User not authorized, redirect to unauthorized page
        this.router.navigate(['/unauthorized']);
        return false;
      }
      // User is logged in and authorized for child routes
      return true;
    }

    // User not logged in, redirect to login page
    this.router.navigate(['/login'], { queryParams: { returnUrl: state.url } });
    return false;
  }
}
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