diff options
Diffstat (limited to 'testapp/exam/models.py')
| -rw-r--r-- | testapp/exam/models.py | 62 |
1 files changed, 51 insertions, 11 deletions
diff --git a/testapp/exam/models.py b/testapp/exam/models.py index 42c5d5a..27d2987 100644 --- a/testapp/exam/models.py +++ b/testapp/exam/models.py @@ -16,7 +16,7 @@ class Profile(models.Model): position = models.CharField(max_length=64) -LANGUAGES = ( +languages = ( ("python", "Python"), ("bash", "Bash"), ("C", "C Language"), @@ -26,7 +26,7 @@ LANGUAGES = ( ) -QUESTION_TYPES = ( +question_types = ( ("mcq", "Multiple Choice"), ("code", "Code"), ) @@ -53,10 +53,10 @@ class Question(models.Model): # The language for question. language = models.CharField(max_length=24, - choices=LANGUAGES) + choices=languages) # The type of question. - type = models.CharField(max_length=24, choices=QUESTION_TYPES) + type = models.CharField(max_length=24, choices=question_types) # Is this question active or not. If it is inactive it will not be used # when creating a QuestionPaper. @@ -115,6 +115,15 @@ class Quiz(models.Model): # Description of quiz. description = models.CharField(max_length=256) + # Mininum passing percentage condition. + pass_criteria = models.FloatField("Passing percentage", default=40) + + # List of prerequisite quizzes to be passed to take this quiz + prerequisite = models.ForeignKey("Quiz", null=True) + + # Programming language for a quiz + language = models.CharField(max_length=20, choices=languages) + class Meta: verbose_name_plural = "Quizzes" @@ -137,11 +146,14 @@ class QuestionPaper(models.Model): # Questions that will be fetched randomly from the Question Set. random_questions = models.ManyToManyField("QuestionSet") + # Option to shuffle questions, each time a new question paper is created. + shuffle_questions = models.BooleanField(default=False) + # Total marks for the question paper. total_marks = models.FloatField() def update_total_marks(self): - """ Returns the total marks for the Question Paper""" + """ Updates the total marks for the Question Paper""" marks = 0.0 questions = self.fixed_questions.all() for question in questions: @@ -149,7 +161,6 @@ class QuestionPaper(models.Model): for question_set in self.random_questions.all(): marks += question_set.marks * question_set.num_questions self.total_marks = marks - return None def _get_questions_for_answerpaper(self): """ Returns fixed and random questions for the answer paper""" @@ -167,8 +178,9 @@ class QuestionPaper(models.Model): + datetime.timedelta(minutes=self.quiz.duration) ans_paper.question_paper = self questions = self._get_questions_for_answerpaper() - question_ids = [str(x.id) for x in questions] - shuffle(questions) + question_ids = [str(x.id) for x in questions] + if self.shuffle_questions: + shuffle(question_ids) ans_paper.questions = "|".join(question_ids) ans_paper.save() return ans_paper @@ -230,6 +242,15 @@ class AnswerPaper(models.Model): # Teacher comments on the question paper. comments = models.TextField() + # Total marks earned by the student in this paper. + marks_obtained = models.FloatField(null=True, default=None) + + # Marks percent scored by the user + percent = models.FloatField(null=True, default=None) + + # Result of the quiz, True if student passes the exam. + passed = models.NullBooleanField() + def current_question(self): """Returns the current active question to display.""" qs = self.questions.split('|') @@ -298,9 +319,28 @@ class AnswerPaper(models.Model): answered = ', '.join(sorted(qa)) return answered if answered else 'None' - def get_marks_obtained(self): - """Returns the total marks earned by student for this paper.""" - return sum([x.marks for x in self.answers.filter(marks__gt=0.0)]) + def update_marks_obtained(self): + """Updates the total marks earned by student for this paper.""" + marks = sum([x.marks for x in self.answers.filter(marks__gt=0.0)]) + self.marks_obtained = marks + + def update_percent(self): + """Updates the percent gained by the student for this paper.""" + total_marks = self.question_paper.total_marks + if self.marks_obtained is not None: + percent = self.marks_obtained/self.question_paper.total_marks*100 + self.percent = round(percent, 2) + + def update_passed(self): + """ + Checks whether student passed or failed, as per the quiz + passing criteria. + """ + if self.percent is not None: + if self.percent >= self.question_paper.quiz.pass_criteria: + self.passed = True + else: + self.passed = False def get_question_answers(self): """ |