diff options
Diffstat (limited to 'yaksh/models.py')
| -rw-r--r-- | yaksh/models.py | 121 |
1 files changed, 109 insertions, 12 deletions
diff --git a/yaksh/models.py b/yaksh/models.py index c8d67ec..7035d1e 100644 --- a/yaksh/models.py +++ b/yaksh/models.py @@ -4,9 +4,10 @@ from random import sample, shuffle from itertools import islice, cycle from collections import Counter from django.db import models +from django.db.models import Q from django.contrib.auth.models import User from django.forms.models import model_to_dict -from django.contrib.contenttypes.models import ContentType +from django.contrib.contenttypes.models import ContentType from taggit.managers import TaggableManager from django.utils import timezone import pytz @@ -59,6 +60,17 @@ def get_model_class(model): ############################################################################### +class CourseManager(models.Manager): + + def create_trial_course(self, user): + """Creates a trial course for testing questions""" + trial_course = self.create(name="trial_course", enrollment="open", + creator=user, is_trial=True) + trial_course.enroll(False, user) + return trial_course + + +############################################################################### class Course(models.Model): """ Course for students""" name = models.CharField(max_length=128) @@ -70,7 +82,8 @@ class Course(models.Model): rejected = models.ManyToManyField(User, related_name='rejected') created_on = models.DateTimeField(auto_now_add=True) teachers = models.ManyToManyField(User, related_name='teachers') - + is_trial = models.BooleanField(default=False) + objects = CourseManager() def request(self, *users): self.requests.add(*users) @@ -111,7 +124,7 @@ class Course(models.Model): return True if self.enrollment == enrollment_methods[1][0] else False def get_quizzes(self): - return self.quiz_set.all() + return self.quiz_set.filter(is_trial=False) def activate(self): self.active = True @@ -286,10 +299,47 @@ class Answer(models.Model): def __unicode__(self): return self.answer + ############################################################################### class QuizManager(models.Manager): def get_active_quizzes(self): - return self.filter(active=True) + return self.filter(active=True, is_trial=False) + + def create_trial_quiz(self, trial_course, user): + """Creates a trial quiz for testing questions""" + trial_quiz = self.create(course=trial_course, + duration=1000, + description="trial_questions", + is_trial=True, + time_between_attempts=0 + ) + return trial_quiz + + def create_trial_from_quiz(self, original_quiz_id, user, godmode): + """Creates a trial quiz from existing quiz""" + trial_quiz_name = "Trial_orig_id_{0}_{1}".format(original_quiz_id, + "godmode" if godmode else "usermode" + ) + + if self.filter(description=trial_quiz_name).exists(): + trial_quiz = self.get(description=trial_quiz_name) + + else: + trial_quiz = self.get(id=original_quiz_id) + trial_quiz.course.enroll(False, user) + trial_quiz.pk = None + trial_quiz.description = trial_quiz_name + trial_quiz.is_trial = True + trial_quiz.time_between_attempts = 0 + trial_quiz.prerequisite = None + if godmode: + trial_quiz.duration = 1000 + trial_quiz.active = True + trial_quiz.start_date_time = timezone.now() + trial_quiz.end_date_time = datetime(2199, 1, 1, 0, 0, 0, 0) + trial_quiz.save() + return trial_quiz + ############################################################################### class Quiz(models.Model): """A quiz that students will participate in. One can think of this @@ -305,10 +355,12 @@ class Quiz(models.Model): # The end date and time of the quiz end_date_time = models.DateTimeField("End Date and Time of the quiz", - default=datetime(2199, 1, 1, - tzinfo=pytz.timezone\ - (timezone.get_current_timezone_name())), - null=True) + default=datetime(2199, 1, 1, + tzinfo=pytz.timezone + (timezone. + get_current_timezone_name()) + ), + null=True) # This is always in minutes. duration = models.IntegerField("Duration of quiz in minutes", default=20) @@ -335,6 +387,8 @@ class Quiz(models.Model): time_between_attempts = models.IntegerField("Number of Days",\ choices=days_between_attempts) + is_trial = models.BooleanField(default=False) + objects = QuizManager() class Meta: @@ -346,7 +400,7 @@ class Quiz(models.Model): def has_prerequisite(self): return True if self.prerequisite else False - + def __unicode__(self): desc = self.description or 'Quiz' return '%s: on %s for %d minutes' % (desc, self.start_date_time, @@ -354,6 +408,47 @@ class Quiz(models.Model): ############################################################################### +class QuestionPaperManager(models.Manager): + + def _create_trial_from_questionpaper(self, original_quiz_id): + """Creates a copy of the original questionpaper""" + trial_questionpaper = self.get(quiz_id=original_quiz_id) + trial_questions = {"fixed_questions": trial_questionpaper + .fixed_questions.all(), + "random_questions": trial_questionpaper + .random_questions.all() + } + trial_questionpaper.pk = None + trial_questionpaper.save() + return trial_questionpaper, trial_questions + + def create_trial_paper_to_test_questions(self, trial_quiz, + questions_list): + """Creates a trial question paper to test selected questions""" + if questions_list is not None: + trial_questionpaper = self.create(quiz=trial_quiz, + total_marks=10, + ) + trial_questionpaper.fixed_questions.add(*questions_list) + return trial_questionpaper + + def create_trial_paper_to_test_quiz(self, trial_quiz, original_quiz_id): + """Creates a trial question paper to test quiz.""" + if self.filter(quiz=trial_quiz).exists(): + trial_questionpaper = self.get(quiz=trial_quiz) + else: + trial_questionpaper, trial_questions = self._create_trial_from_questionpaper\ + (original_quiz_id) + trial_questionpaper.quiz = trial_quiz + trial_questionpaper.fixed_questions\ + .add(*trial_questions["fixed_questions"]) + trial_questionpaper.random_questions\ + .add(*trial_questions["random_questions"]) + trial_questionpaper.save() + return trial_questionpaper + + +############################################################################### class QuestionPaper(models.Model): """Question paper stores the detail of the questions.""" @@ -372,6 +467,8 @@ class QuestionPaper(models.Model): # Total marks for the question paper. total_marks = models.FloatField() + objects = QuestionPaperManager() + def update_total_marks(self): """ Updates the total marks for the Question Paper""" marks = 0.0 @@ -396,7 +493,7 @@ class QuestionPaper(models.Model): user_ip=ip, attempt_number=attempt_num ) - ans_paper.start_time = datetime.now() + ans_paper.start_time = timezone.now() ans_paper.end_time = ans_paper.start_time + \ timedelta(minutes=self.quiz.duration) ans_paper.question_paper = self @@ -420,7 +517,7 @@ class QuestionPaper(models.Model): last_attempt = AnswerPaper.objects.get_user_last_attempt(user=user, questionpaper=self) if last_attempt: - time_lag = (datetime.today() - last_attempt.start_time.replace(tzinfo=None)).days + time_lag = (timezone.now() - last_attempt.start_time).days return time_lag >= self.quiz.time_between_attempts else: return True @@ -666,7 +763,7 @@ class AnswerPaper(models.Model): def time_left(self): """Return the time remaining for the user in seconds.""" - dt = datetime.now() - self.start_time.replace(tzinfo=None) + dt = timezone.now() - self.start_time try: secs = dt.total_seconds() except AttributeError: |