Angular 中具有多个组件的一个路由器

Question

I have two components which are DashboardComponent and LoginComponent. when user hits my website url ie http://localhost:4200 I have to render LoginComponent if user hasn't logedIn already. If user has logged in already, I have to render Dashboard component in the same route ie http://localhost:4200

this.router.navigate(['login']);

Using this will require another route (/login). But I have to switch the components based on the logged in condition in the same route just as like facebook,instagram. how to achieve this in angular?

Update This is my router config

const routes: Routes = [
  {path: '', component: DashboardComponent}
];

Answer 1

Somehow i have found the work around. But im not sure if it is correct approach!

in DashboardComponent.html

<app-login *ngIf="!loginService.isUserLoggedIn()"></app-login>
<p *ngIf="loginService.isUserLoggedIn()">dashboard works!
        <button (click)="loginService.logOut()" class="btn btn-danger">logout</button>
</p>

Created LoginService

export class LoginService {

  constructor() { }

  public authenticate(username, password) {
    if (username === "abishek" && password === "password") {
      sessionStorage.setItem('username', username)
      return true;
    } else {
      return false;
    }
  }

  public isUserLoggedIn() {
    let user = sessionStorage.getItem('username')
    return !(user === null)
  }

  public logOut() {
    sessionStorage.removeItem('username')
  }
}

In LoginComponent.ts while click on login button which call checkLogin() function

checkLogin() {
    if (this.loginservice.authenticate(this.username, this.password)
    ) {
      this.router.navigate([''])
    } else
      // some error
  }

My routing config remains same