public function getQuestions()
 {
     $request = Request::capture();
     $token = $request->input('token');
     $targetUserId = $request->input('userId');
     // 指定某个用户提出的问题 如果为空 显示token用户关注人提出的问题
     $page = $request->input('page');
     $size = $request->input('size');
     $tagId = $request->input('tagId');
     $userId = AuthController::getUserIdByToken($token);
     if ($userId == null) {
         return Utility::response_format(Utility::RESPONSE_CODE_AUTH_ERROR, '', '认证失败');
     }
     if ($size == null || $size > 50) {
         $size = 20;
     }
     $questions = null;
     if ($targetUserId != null) {
         $questions = Question::select('id', 'title', 'brief', 'publish_time', 'user_id')->where('user_id', $targetUserId)->orderBy('publish_time', 'desc');
     } else {
         $followUser = UserFollows::where('user_id', $userId)->lists('follow_user_id')->toArray();
         array_push($followUser, $userId);
         $questions = Question::select('id', 'title', 'brief', 'publish_time', 'user_id')->whereIn('user_id', $followUser)->orderBy('publish_time', 'desc');
     }
     if ($tagId != null) {
         $questionsTag = QuestionTags::where('tag_id', $tagId)->lists('question_id');
         $questions = $questions->whereIn('id', $questionsTag);
     }
     $questions_query = $questions->paginate($size, '*', 'page', $page)->toArray();
     $questions_result = $questions_query['data'];
     $result = array();
     foreach ($questions_result as $question) {
         // 个人信息
         $userInfo = UserInfo::select('user_name', 'head_pic')->where('user_id', $question['user_id'])->first()->toArray();
         $question = array_merge($question, $userInfo);
         // 图片
         $picIds = QuestionPictures::select('pic_id')->where('question_id', $question['id'])->get()->toArray();
         $pics = Picture::whereIn('id', $picIds)->get()->toArray();
         $question = array_merge($question, ['image' => $pics]);
         //            print_r($question);
         // 标签
         $tagIds = QuestionTags::select('tag_id')->where('question_id', $question['id'])->get()->toArray();
         $tags = Tags::whereIn('id', $tagIds)->get()->toArray();
         $question = array_merge($question, ['tags' => $tags]);
         array_push($result, $question);
     }
     //        print_r($questions_result);
     return Utility::response_format(Utility::RESPONSE_CODE_SUCCESS, $result, '请求成功');
 }
 public function deleteFollowUser()
 {
     $request = Request::capture();
     $token = $request->input('token');
     // 被关注人id
     $followUserId = $request->input('userId');
     if ($followUserId == null) {
         return Utility::response_format(Utility::RESPONSE_CODE_Error, '', 'userId不能为空');
     }
     // 用户id
     $userId = AuthController::getUserIdByToken($token);
     if ($userId == null) {
         return Utility::response_format(Utility::RESPONSE_CODE_AUTH_ERROR, '', '认证失败');
     }
     DB::beginTransaction();
     try {
         $follow = UserFollows::where('user_id', $userId)->where('follow_user_id', $followUserId)->delete();
         $fans = UserFans::where('user_id', $followUserId)->where('fans_user_id', $userId)->delete();
         DB::commit();
         if ($follow == null || $fans == null) {
             return Utility::response_format(Utility::RESPONSE_CODE_Error, '', '取消关注失败');
         } else {
             return Utility::response_format(Utility::RESPONSE_CODE_SUCCESS, '', '取消关注成功');
         }
     } catch (Exception $e) {
         DB::rollBack();
         return Utility::response_format(Utility::RESPONSE_CODE_DB_ERROR, '', $e->getMessage());
     }
 }