fix: Apply code from review

Author: sy-records

internal/repo/activity/vote_repo.go

@@ -240,6 +240,9 @@ func (vr *VoteRepo) setActivityRankToZeroIfUserReachLimit(ctx context.Context, s
 	op *schema.VoteOperationInfo, userInfoMapping map[string]*entity.User, maxDailyRank int) (err error) {
 	// check if user reach daily rank limit
 	for _, activity := range op.Activities {
+		if userInfoMapping[activity.ActivityUserID] == nil {
+			continue
+		}
 		if activity.Rank > 0 {
 			// check if reach max daily rank
 			reach, err := vr.userRankRepo.CheckReachLimit(ctx, session, activity.ActivityUserID, maxDailyRank)

internal/service/question_common/question.go

@@ -384,6 +384,7 @@ func (qs *QuestionCommon) FormatQuestionsPage(
 			LastAnswerID:     questionInfo.LastAnswerID,
 			Pin:              questionInfo.Pin,
 			Show:             questionInfo.Show,
+			Operator:         &schema.QuestionPageRespOperator{ID: questionInfo.UserID},
 		}
 
 		questionIDs = append(questionIDs, questionInfo.ID)