title: Redirect empty path to login page (Angular 4)
body: <p>i want to redirect from the empty path " " to my login page, when user is not logedd in. So i'm using guards and children routes to do this. However, my code is fine to all routes except " ".</p>
  
  <p>This is my guard (canValidate function)</p>
  
  <pre><code>canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot):boolean {
     return this.canMethod();
    }
  
    canMethod () {
      if (Environment.ActivateGuard) {
        let token = this._auth.getCookie(AuthorizationEnum.cookieName);
        if(token) { // token exists
          let data = {
            token: token,
            module: this.module
          };
  
          this._auth.validate(data, AuthorizationEnum.Bearer).subscribe(
            data =&gt; { // valid token
              if ( data.res == AuthorizationEnum.emptyResponse)  { // invalid user, it doesn't belongs to this module.
                this.letsRedirect();
              } 
              else {
                let user_role = data.det[1]; // this is the user's role!.
              }
            },
            error =&gt; { //  other error
              this.letsRedirect();
            }
          );
          return true;
        } 
        else { // user don't have token
          this.letsRedirect();
        }      
      } 
      else {
        return true;
      }    
    }
  
  
    letsRedirect(){
       window.location.href = Environment.authAppUrl + AuthorizationEnum.redirectQuery + encodeURIComponent(this.url);
    }
  </code></pre>
  
  <p>And this is my app-routing.module.ts(only the array of routes)</p>
  
  <pre><code>const routes: Routes = [
  
    // TODO: Validar esta ruta
    //{ path: '', component: LoginComponent, pathMatch: 'full' },
  
    //Con header
    { 
      path: '', 
      children: [
        { path: '', component: HomeComponent,canActivate:[AuthorizatedGuard]},
        { path: 'inicio', component: HomeComponent, canActivate:[AuthorizatedGuard] },  
        { path: 'categorias', redirectTo: 'base-lista/categorias'},
        { path: 'videos', redirectTo: 'base-lista/videos'},
        { path: 'base-lista/:idList', component: BaseListComponent, canActivate:[AuthorizatedGuard] },
        { path: 'base-lista/categorias/gestionar-categorias', component: CategoryVideoComponent, canActivate:[AuthorizatedGuard]  },
        { path: 'base-lista/categorias/ver-detalles-categoria', component: ViewDetailsCategoryComponent, canActivate:[AuthorizatedGuard]  },
        { path: 'base-lista/videos/gestionar-videos', component: VideoComponent, canActivate:[AuthorizatedGuard]  },
        { path: 'base-lista/videos/ver-detalles-video', component: ViewDetailsVideoComponent, canActivate:[AuthorizatedGuard]  },
       ],
      component: AppLayoutComponent,
      canActivate: [AuthorizatedGuard],
    },
  
    //sin header
    {
      path: '',
      component: LoginComponent,
      children: [
        {
          path: 'login',
          component: LoginComponent
        }
  
      ]
    }
  
  ];
  </code></pre>
  
  <p>When we try to access "htpp://localhost:4200/", Angular will evaluate the route paths. The first part of the path for the first route configured is "", so let’s continue evaluating the second part which is also "", so we have a match! But the guard still need to verify if the user can access the HomeLayoutComponent (if user is logged in). If the user is logged in, then the access is granted and the user will see the HomeLayoutComponent (the navbar along with the HomeComponent being rendered in the router-outlet), otherwise it is redirected to "htpp://localhost:4200/login".</p>
  
  <p>So suppose we are trying to access "htpp://localhost:4200/login". Angular will evaluate the route path again. The first part of the path for the first route configured is "", so let’s continue evaluating the second part which is "login", so we do not have a match with. We need to evaluate the next route configured. Let’s go again! The first part of the path for the first route configured is "" (this time), so let’s continue evaluating the second part which is "login" and we have a match . In this case the LoginLayoutComponent is displayed. Since there is only a router-outlet in the HTML template, only the LoginComponent will be displayed.</p>
  
  <p><a href="https://loiane.com/2017/08/angular-hide-navbar-login-page/" rel="noreferrer">I am using this link to create the routing</a></p>
  
  <p>So.. what is wrong with my code?</p>