I am verifying the user's login status and directing them to the login page if they are not already logged in

Question

I am verifying the user's login status and directing them to the login page if they are not already logged in

My goal is to utilize ionViewWillEnter in order to verify if the user is logged in. If the check returns false, I want to direct them to the login page and then proceed with the initializeapp function. My experience with Angular and Ionic is still limited, so any advice or suggestions would be greatly appreciated.

ionViewCanEnter() {
    console.log("1");
    console.log(this.userSevice.isUserLoggedIn());
    if (this.userSevice.isUserLoggedIn() === false){
      this.nav.push(LoginPage);
      alert("user is logging in");
    }
    else{
      this.initializeApp();
    }
  }

angular typescript ionic-framework ionic2

Answer 1

Answer №1

Angular has a fantastic feature known as Guard, which can be utilized to manage the login flow within an angular application.

You have the ability to create an auth guard and incorporate it into your router or any other relevant location to direct users to the login page if they are not logged in and attempting to access restricted areas of the website.

This is an example of a basic auth guard:

@Injectable()
export class AuthGuard implements CanActivate {

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

  canActivate(): Observable<boolean> | boolean {
    // Check if this is the initial call. If not, return a 
    // simple boolean value based on the user object from the authService.
    // Otherwise:

    return this.authService.getAuthenticated.map(user => {
          this.authService.setUser(user);
          return user ? true : false;
    })

  } 
}

Incorporate the guard in your router setup like this:

const routes: Routes = [
  {
    path: '',
    canActivate: [AuthGuardService],
    runGuardsAndResolvers: 'always',
  }
   ...
]

Answer 2

Angular has a fantastic feature known as Guard, which can be utilized to manage the login flow within an angular application.

You have the ability to create an auth guard and incorporate it into your router or any other relevant location to direct users to the login page if they are not logged in and attempting to access restricted areas of the website.

This is an example of a basic auth guard:

@Injectable()
export class AuthGuard implements CanActivate {

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

  canActivate(): Observable<boolean> | boolean {
    // Check if this is the initial call. If not, return a 
    // simple boolean value based on the user object from the authService.
    // Otherwise:

    return this.authService.getAuthenticated.map(user => {
          this.authService.setUser(user);
          return user ? true : false;
    })

  } 
}

Incorporate the guard in your router setup like this:

const routes: Routes = [
  {
    path: '',
    canActivate: [AuthGuardService],
    runGuardsAndResolvers: 'always',
  }
   ...
]

I am verifying the user's login status and directing them to the login page if they are not already logged in

Answer №1

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