Drop score cache when score is updated for a student

responses.go

@@ -127,6 +127,14 @@ func init() {
 			now := time.Now()
 			new.IdCorrector = &u.Id
 			new.TimeScored = &now
+
+			if _, ok := _score_cache[current.IdUser]; ok {
+				if surveyId, err := current.GetSurveyId(); err == nil {
+					if _, ok = _score_cache[current.IdUser][surveyId]; ok {
+						delete(_score_cache[current.IdUser], surveyId)
+					}
+				}
+			}
 		}
 
 		new.Id = current.Id
@@ -279,6 +287,14 @@ func (s *Survey) NewResponse(id_question int64, id_user int64, response string)
 	}
 }
 
+func (r *Response) GetSurveyId() (int64, error) {
+	if q, err := getQuestion(int(r.IdQuestion)); err != nil {
+		return 0, err
+	} else {
+		return q.IdSurvey, err
+	}
+}
+
 func (r Response) Update() (Response, error) {
 	_, err := DBExec("UPDATE survey_responses SET id_question = ?, id_user = ?, answer = ?, time_submit = ?, score = ?, score_explanation = ?, id_corrector = ?, time_scored = ? WHERE id_response = ?", r.IdQuestion, r.IdUser, r.Answer, r.TimeSubmit, r.Score, r.ScoreExplaination, r.IdCorrector, r.TimeScored, r.Id)
 	return r, err