Laravel two differant login pages if user has value 1 or 2 issue

I try to code in my Controller the Login page for 2 differant users. One they have 2FA enabled the other not.

$request=User:

Value 1= Disabled and ignore messagedecrypt

Value 2= 2FA Enabled and use redirect to page messagedecrypt

if ($request->twofactor== 1)

and

if ($request->twofactor == 2)

AuthController:

    public function LoginPost(Request $request){
      $rules = ['captcha' => 'required|captcha'];
            $validator = Validator::make(Input::all(), $rules);
            if ($validator->fails())
            {
                session()->flash('errormessage','Invalid captcha ');
                return redirect()->back();
            }
            if ($request->username == null || $request->password == null) {
              session()->flash('errormessage','You must populate all fields ');
              return redirect()->back();
            }
            $user = User::where('username',$request->username)->first();
            if ($user == null) {
              session()->flash('errormessage','Invalid username ');
              return redirect()->back();
            }
            if ($user->verified == false) {
              session()->flash('errormessage','Your account is not verified ');
              return redirect()->route('verify');
            }
            if (!Hash::check($request->password,$user->password) && !Hash::check($request->username,$user->username)) 
            {
              session()->flash('errormessage','Your Login Credential Are Wrong');
              return redirect()->back();
            } 
            else 
            {
              session()->flash('user_name',$request->username);
              session()->flash('user_password',$request->password);
              return redirect('messagedecrypt');
            }
    }

No i have try to make it with if ($request->twofactor == ..)

Like this:

    public function LoginPost(Request $request){
      $rules = ['captcha' => 'required|captcha'];
            $validator = Validator::make(Input::all(), $rules);
            if ($validator->fails())
            {
                session()->flash('errormessage','Invalid captcha ');
                return redirect()->back();
            }
            if ($request->username == null || $request->password == null) {
              session()->flash('errormessage','You must populate all fields ');
              return redirect()->back();
            }
            $user = User::where('username',$request->username)->first();
            if ($user == null) {
              session()->flash('errormessage','Invalid username ');
              return redirect()->back();
            }
            if ($user->verified == false) {
              session()->flash('errormessage','Your account is not verified ');
              return redirect()->route('verify');
            }



 if ($request->twofactor== 2){
                if (!Hash::check($request->password,$user->password) && !Hash::check($request->username,$user->username)) 
                {
                  session()->flash('errormessage','Your Login Credential Are Wrong');
                  return redirect()->back();
                } 
                else 
                {
                  session()->flash('user_name',$request->username);
                  session()->flash('user_password',$request->password);
                  return redirect('messagedecrypt');
                    }
            }

     if ($request->twofactor== 1){
 if (Auth::attempt(['username' => $request->username, 'password' => $request->password])) {
              $user = Auth::user();
              $user->last_seen = date('Y-m-d H:i:s', time());
              $user->save();
              return redirect()->route('home');

            } else {
              session()->flash('errormessage','Invalid password ');
              return redirect()->back();
            }
    }
}

But get only an blank page. Whats the Problem?

Thanks

via Chebli Mohamed