diff options
Diffstat (limited to 'exam/models.py')
| -rw-r--r-- | exam/models.py | 45 |
1 files changed, 41 insertions, 4 deletions
diff --git a/exam/models.py b/exam/models.py index fb06576..d433c7c 100644 --- a/exam/models.py +++ b/exam/models.py @@ -5,7 +5,7 @@ from django.contrib.auth.models import User ################################################################################ class Profile(models.Model): """Profile for a user to store roll number and other details.""" - user = models.ForeignKey(User) + user = models.OneToOneField(User) roll_number = models.CharField(max_length=20) institute = models.CharField(max_length=128) department = models.CharField(max_length=64) @@ -44,8 +44,15 @@ class Answer(models.Model): # The question for which we are an answer. question = models.ForeignKey(Question) - # The last answer submitted by the user. + # The answer submitted by the user. answer = models.TextField() + + # Error message when auto-checking the answer. + error = models.TextField() + + # Marks obtained for the answer. This can be changed by the teacher if the + # grading is manual. + marks = models.FloatField(default=0.0) # Is the answer correct. correct = models.BooleanField(default=False) @@ -86,6 +93,10 @@ class QuestionPaper(models.Model): """ # The user taking this question paper. user = models.ForeignKey(User) + + # The user's profile, we store a reference to make it easier to access the + # data. + profile = models.ForeignKey(Profile) # The Quiz to which this question paper is attached to. quiz = models.ForeignKey(Quiz) @@ -108,6 +119,9 @@ class QuestionPaper(models.Model): # All the submitted answers. answers = models.ManyToManyField(Answer) + + # Teacher comments on the question paper. + comments = models.TextField() def current_question(self): """Returns the current active question to display.""" @@ -125,7 +139,7 @@ class QuestionPaper(models.Model): else: return qs.count('|') + 1 - def answered_question(self, question_id): + def completed_question(self, question_id): """Removes the question from the list of questions and returns the next.""" qa = self.questions_answered @@ -141,7 +155,7 @@ class QuestionPaper(models.Model): return '' else: return qs[0] - + def skip(self): """Skip the current question and return the next available question.""" qs = self.questions.split('|') @@ -166,6 +180,29 @@ class QuestionPaper(models.Model): total = self.quiz.duration*60.0 remain = max(total - secs, 0) return int(remain) + + def get_answered_str(self): + """Returns the answered questions, sorted and as a nice string.""" + qa = self.questions_answered.split('|') + answered = ', '.join(sorted(qa)) + return answered if answered else 'None' + + def get_total_marks(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 get_question_answers(self): + """Return a dictionary with keys as questions and a list of the corresponding + answers. + """ + q_a = {} + for answer in self.answers.all(): + question = answer.question + if question in q_a: + q_a[question].append(answer) + else: + q_a[question] = [answer] + return q_a def __unicode__(self): u = self.user |