Title Text

const routes: Routes = [
  { path: 'sign-in', component: SignInComponent },
  { path: 'talks', component: TalksComponent, canActivate:[AuthenticationGuard] }
];

@Injectable()
export class AuthenticationGuard {

    constructor(private authService:AuthenticationService, private router:Router) { }

    canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot):
                Observable<boolean> | Promise<boolean> | boolean {
        if (this.authService.isAuthenticated) {
            return true;
        }
        this.router.navigate(['/']);
        return false;
    }
}
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpClientModule } from '@angular/common/http';

import { AppComponent } from './app.component';
import { HeroesComponent } from './heroes.component';
import { HeroService } from './hero.service';

@NgModule({
  declarations: [AppComponent, HeroesComponent],
  imports: [BrowserModule, FormsModule, HttpClientModule],
  providers: [HeroService],
  bootstrap: [AppComponent]
})
export class AppModule {}
import { Component } from '@angular/core';

@Component({
  selector: 'app-root',
  template: `
    <h1>Heroes</h1>
    <app-heroes></app-heroes>
  `,
  styles: []
})
export class AppComponent {
  title = 'app';
}

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