Authentication in Angular 2 - part 9

can-activate-private-metadata.ts

// can-activate-private-metadata.ts
import { Router } from '@angular/router-deprecated';
import { makeDecorator } from '@angular/core/src/util/decorators';
import { CanActivate as CanActivateMetadata } 
  from '@angular/router-deprecated/src/lifecycle/lifecycle_annotations_impl';

import { appInjector } from './app-injector';
import { UserService } from './user.service';

class PrivateMetadata extends CanActivateMetadata {
    constructor() {
        super((next, prev) => {
            let injector = appInjector();
            if (!injector.get(UserService).isLoggedIn()) {
                injector.get(Router).navigate(['Login']);
                return false;
            }
            return true;
        });
    }
}
export const CanActivatePrivateMetadata = makeDecorator(PrivateMetadata);