public function post_change_password_hint(Request $request, ThreeStepUser $three_step_user, ThreeStepAdmin $three_step_admin)
 {
     $validation_rules = $three_step_admin->getValidationRulesChangePasswordHint();
     $this->validate($request, $validation_rules);
     $arr_request = $three_step_admin->getRequestArrayChangePasswordHint($request);
     $three_step_user = $three_step_user->where('role_id', 1)->first();
     if (!$three_step_user == null) {
         $three_step_user->hint = $arr_request['new_hint'];
         $three_step_user->save();
         $data = $three_step_admin->getDataArrayChangePassword(null, $this->arr_logged_in_user);
         return view('three_step_admin/change_password_hint_results')->with('data', $data);
     } else {
         $data = $three_step_admin->getDataArrayChangePassword('No three step user found.', $this->arr_logged_in_user);
         return view('three_step_admin/change_password_hint')->with('data', $data);
     }
 }