pass observable to another observable

Question

the canActivate route event accepts a boolean observable.

I want to return from the authService.getUser() the user object which is instantiated or null.

Depending on the user value I want to return true/false to the boolean observable.

How can I do this?

   canActivate() : Observable<boolean>
     {
        let userObservable = this.authService.getUser();
        userObservable.subscribe((user) => {
            if (user == null) {
                  this.authService.startSigninMainWindow();
                  return false;
            }
            else  
            {
                return true;
            }
        });
        return new Observable<boolean>("I want to pass here the 'future' result of the userObservable");
    }

JB Nizet JB Nizet · Accepted Answer · 2017-11-21T21:42:23

return this.authService.getUser()
  .do(user => {
    if (user == null) { 
      this.authService.startSigninMainWindow();
    }
  })
  .map(user => !!user);

pass observable to another observable

1 Answers