CODEWITHSUNDEEP
angularrbacauth-guard
Anusha Krishnamurthy
Anusha Krishnamurthy

Reputation: 161

How to dynamically add authguard based on a role in Angular?

In my Angular app , Admin user creates other users and roles.

While creating the roles , Admin can add permissions to it . i.e what menu items can this type of user role can access ?

The challenging part is that , I need to specify auth guard to the routes .

For example ,

Supervisor role type can access - Menu item 1 Menu Item 2 , Menu item 4, Menu item 5

Engineer role type can access - Menu Item 3 , Menu Item 6

All the menu items are separate modules .

When an Engineer tries to access menu item 1 via URL , he should be redirected .

Please help me on this . Any high level approach is fine for me . Thanks in advance

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Upvotes: 2

Views: 1985

Answers (1)

Fateh Mohamed
Fateh Mohamed

Reputation: 21377

If you want a clean way to manage permissions based on roles, i suggest that you use ngx-permissions

npm i ngx-permissions

NgxPermissionsGuard implements CanLoad interface, and you can use it like this

 {
  path: 'lazy',
  data: {
   permissions: {
     only: 'SUPERVISOR',
   }
  },
  canLoad: [NgxPermissionsGuard],
  loadChildren: 'app/lazy-module/lazy-module.module#LazyModule'
},

if you want to grant access to something except Supervisor you can use except

data: {
   permissions: {
     except: 'SUPERVISOR',
   }
},

Both possibilities is possible too

 data: {
  permissions: {
    only: ['ADMIN', 'MODERATOR'],
    except: ['SUPERVISOR']
  }
}

More details here

if you don't want to use ngx-permission you can create a service

@Injectable()
export class AuthGuardService implements CanLoad {
 constructor(private router: Router) {}

 canLoad(route: Route): boolean {

 let url = route.path; //get url here, example menu1
 // get permissions array here from a service or localstorage
 if(permissions.indexOf(url) !== -1 ) { //means it exist
   return true
 }
 return false; 
 }
}

and add it in your 3 routes

 {path: "menu1", loadChildren:'./main/menu.module#Menu1Module', canLoad:[AuthGuardService]}
 ...

Upvotes: 3

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