public function getGroupUser(Request $request)
 {
     $validator = Validator::make($request->all(), ['question_id' => 'required', 'user_id' => 'required']);
     if ($validator->fails()) {
         if ($validator->errors()->has('question_id')) {
             return response()->json($validator->errors()->first('question_id'), 400);
         }
         if ($validator->errors()->has('group_user_id')) {
             return response()->json($validator->errors()->first('user_id'), 400);
         }
     }
     $group_name = CompetitionGroupUser::where('competition_question_id', $request->question_id)->where('user_id', $request->user_id)->pluck('group_name');
     $group_user_ids = CompetitionGroupUser::where('group_name', $group_name)->where('competition_question_id', $request->question_id)->lists('id');
     $group_list = CompetitionGroupUser::with('answer')->where('competition_question_id', $request->question_id)->where('group_name', $group_name)->get();
     $muti_question_count = MutipleQuestion::where('question_id', $request->question_id)->count();
     foreach ($group_list as $key => $value) {
         $profile_img = json_decode($value->profile_img, true);
         if ($profile_img) {
             $group_list[$key]['image_url'] = isset($profile_img['url']) ? $profile_img['url'] : '';
         } else {
             $group_list[$key]['image_url'] = "http://url";
         }
         $group_list[$key]['limited_answer'] = $muti_question_count;
         $group_list[$key]['total_has_answer'] = count($group_list) * $muti_question_count;
         $group_list[$key]['current_has_answer'] = MutipleAnswer::wherein('user_id', $group_user_ids)->count();
         $group_list[$key]['init_answer'] = null;
         foreach ($group_list[$key]['answer'] as $i => $value) {
             if ($i == 0) {
                 $group_list[$key]['init_answer'] = $value;
             }
         }
     }
     return response()->json($group_list);
 }