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authorankitjavalkar2015-09-11 12:35:09 +0530
committerankitjavalkar2015-09-14 12:00:53 +0530
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parentae10d36297797ffc53275eabe3acfa0cb4bf3b11 (diff)
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Change app name to 'yaksh'
Diffstat (limited to 'testapp/yaksh_app/models.py')
-rw-r--r--testapp/yaksh_app/models.py471
1 files changed, 0 insertions, 471 deletions
diff --git a/testapp/yaksh_app/models.py b/testapp/yaksh_app/models.py
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--- a/testapp/yaksh_app/models.py
+++ /dev/null
@@ -1,471 +0,0 @@
-import datetime
-import json
-from random import sample, shuffle
-from itertools import islice, cycle
-from django.db import models
-from django.contrib.auth.models import User
-from taggit.managers import TaggableManager
-
-
-###############################################################################
-class Profile(models.Model):
- """Profile for a user to store roll number and other details."""
- user = models.OneToOneField(User)
- roll_number = models.CharField(max_length=20)
- institute = models.CharField(max_length=128)
- department = models.CharField(max_length=64)
- position = models.CharField(max_length=64)
-
-
-languages = (
- ("python", "Python"),
- ("bash", "Bash"),
- ("c", "C Language"),
- ("cpp", "C++ Language"),
- ("java", "Java Language"),
- ("scilab", "Scilab"),
- )
-
-
-question_types = (
- ("mcq", "Multiple Choice"),
- ("mcc", "Multiple Correct Choices"),
- ("code", "Code"),
- ("upload", "Assignment Upload"),
- )
-attempts = [(i, i) for i in range(1, 6)]
-attempts.append((-1, 'Infinite'))
-days_between_attempts = ((j, j) for j in range(401))
-
-test_status = (
- ('inprogress', 'Inprogress'),
- ('completed', 'Completed'),
- )
-
-
-def get_assignment_dir(instance, filename):
- return '%s/%s' % (instance.user.roll_number, instance.assignmentQuestion.id)
-
-
-###############################################################################
-class Question(models.Model):
- """Question for a quiz."""
-
- # A one-line summary of the question.
- summary = models.CharField(max_length=256)
-
- # The question text, should be valid HTML.
- description = models.TextField()
-
- # Number of points for the question.
- points = models.FloatField(default=1.0)
-
- # Answer for MCQs.
- test = models.TextField(blank=True)
-
- # Test cases file paths (comma seperated for reference code path and test case code path)
- # Applicable for CPP, C, Java and Scilab
- ref_code_path = models.TextField(blank=True)
-
- # Any multiple choice options. Place one option per line.
- options = models.TextField(blank=True)
-
- # The language for question.
- language = models.CharField(max_length=24,
- choices=languages)
-
- # The type of question.
- 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.
- active = models.BooleanField(default=True)
-
- # Snippet of code provided to the user.
- snippet = models.CharField(max_length=256)
-
- # Tags for the Question.
- tags = TaggableManager()
-
- def consolidate_answer_data(self, test_cases, user_answer):
- test_case_data_dict = []
- question_info_dict = {}
-
- for test_case in test_cases:
- kw_args_dict = {}
- pos_args_list = []
-
- test_case_data = {}
- test_case_data['test_id'] = test_case.id
- test_case_data['func_name'] = test_case.func_name
- test_case_data['expected_answer'] = test_case.expected_answer
-
- if test_case.kw_args:
- for args in test_case.kw_args.split(","):
- arg_name, arg_value = args.split("=")
- kw_args_dict[arg_name.strip()] = arg_value.strip()
-
- if test_case.pos_args:
- for args in test_case.pos_args.split(","):
- pos_args_list.append(args.strip())
-
- test_case_data['kw_args'] = kw_args_dict
- test_case_data['pos_args'] = pos_args_list
- test_case_data_dict.append(test_case_data)
-
- # question_info_dict['language'] = self.language
- question_info_dict['id'] = self.id
- question_info_dict['user_answer'] = user_answer
- question_info_dict['test_parameter'] = test_case_data_dict
- question_info_dict['ref_code_path'] = self.ref_code_path
- question_info_dict['test'] = self.test
-
- return json.dumps(question_info_dict)
-
- def __unicode__(self):
- return self.summary
-
-
-###############################################################################
-class Answer(models.Model):
- """Answers submitted by the users."""
-
- # The question for which user answers.
- question = models.ForeignKey(Question)
-
- # The answer submitted by the user.
- answer = models.TextField(null=True, blank=True)
-
- # 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)
-
- # Whether skipped or not.
- skipped = models.BooleanField(default=False)
-
- def __unicode__(self):
- return self.answer
-
-
-###############################################################################
-class Quiz(models.Model):
- """A quiz that students will participate in. One can think of this
- as the "examination" event.
- """
-
- # The start date of the quiz.
- start_date_time = models.DateTimeField("Start Date and Time of the quiz",
- default=datetime.datetime.now(),
- null=True)
-
- # The end date and time of the quiz
- end_date_time = models.DateTimeField("End Date and Time of the quiz",
- default=datetime.datetime(2199, 1, 1, 0, 0, 0, 0),
- null=True)
-
- # This is always in minutes.
- duration = models.IntegerField("Duration of quiz in minutes", default=20)
-
- # Is the quiz active. The admin should deactivate the quiz once it is
- # complete.
- active = models.BooleanField(default=True)
-
- # 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)
-
- # Number of attempts for the quiz
- attempts_allowed = models.IntegerField(default=1, choices=attempts)
-
- time_between_attempts = models.IntegerField("Number of Days",\
- choices=days_between_attempts)
-
- class Meta:
- verbose_name_plural = "Quizzes"
-
- def __unicode__(self):
- desc = self.description or 'Quiz'
- return '%s: on %s for %d minutes' % (desc, self.start_date_time,
- self.duration)
-
-
-###############################################################################
-class QuestionPaper(models.Model):
- """Question paper stores the detail of the questions."""
-
- # Question paper belongs to a particular quiz.
- quiz = models.ForeignKey(Quiz)
-
- # Questions that will be mandatory in the quiz.
- fixed_questions = models.ManyToManyField(Question)
-
- # 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):
- """ Updates the total marks for the Question Paper"""
- marks = 0.0
- questions = self.fixed_questions.all()
- for question in questions:
- marks += question.points
- for question_set in self.random_questions.all():
- marks += question_set.marks * question_set.num_questions
- self.total_marks = marks
-
- def _get_questions_for_answerpaper(self):
- """ Returns fixed and random questions for the answer paper"""
- questions = []
- questions = list(self.fixed_questions.all())
- for question_set in self.random_questions.all():
- questions += question_set.get_random_questions()
- return questions
-
- def make_answerpaper(self, user, ip, attempt_num):
- """Creates an answer paper for the user to attempt the quiz"""
- ans_paper = AnswerPaper(user=user, user_ip=ip, attempt_number=attempt_num)
- ans_paper.start_time = datetime.datetime.now()
- ans_paper.end_time = ans_paper.start_time \
- + 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]
- if self.shuffle_questions:
- shuffle(question_ids)
- ans_paper.questions = "|".join(question_ids)
- ans_paper.save()
- return ans_paper
-
-
-###############################################################################
-class QuestionSet(models.Model):
- """Question set contains a set of questions from which random questions
- will be selected for the quiz.
- """
-
- # Marks of each question of a particular Question Set
- marks = models.FloatField()
-
- # Number of questions to be fetched for the quiz.
- num_questions = models.IntegerField()
-
- # Set of questions for sampling randomly.
- questions = models.ManyToManyField(Question)
-
- def get_random_questions(self):
- """ Returns random questions from set of questions"""
- return sample(self.questions.all(), self.num_questions)
-
-
-###############################################################################
-class AnswerPaper(models.Model):
- """A answer paper for a student -- one per student typically.
- """
- # The user taking this question paper.
- user = models.ForeignKey(User)
-
- # All questions that remain to be attempted for a particular Student
- # (a list of ids separated by '|')
- questions = models.CharField(max_length=128)
-
- # The Quiz to which this question paper is attached to.
- question_paper = models.ForeignKey(QuestionPaper)
-
- # The attempt number for the question paper.
- attempt_number = models.IntegerField()
-
- # The time when this paper was started by the user.
- start_time = models.DateTimeField()
-
- # The time when this paper was ended by the user.
- end_time = models.DateTimeField()
-
- # User's IP which is logged.
- user_ip = models.CharField(max_length=15)
-
- # The questions successfully answered (a list of ids separated by '|')
- questions_answered = models.CharField(max_length=128)
-
- # All the submitted answers.
- answers = models.ManyToManyField(Answer)
-
- # 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()
-
- # Status of the quiz attempt
- status = models.CharField(max_length=20, choices=test_status,\
- default='inprogress')
-
- def current_question(self):
- """Returns the current active question to display."""
- qu = self.get_unanswered_questions()
- if len(qu) > 0:
- return qu[0]
- else:
- return ''
-
- def questions_left(self):
- """Returns the number of questions left."""
- qu = self.get_unanswered_questions()
- return len(qu)
-
- def get_unanswered_questions(self):
- """Returns the list of unanswered questions."""
- qa = self.questions_answered.split('|')
- qs = self.questions.split('|')
- qu = [q for q in qs if q not in qa]
- return qu
-
- def completed_question(self, question_id):
- """
- Adds the completed question to the list of answered
- questions and returns the next question.
- """
- qa = self.questions_answered
- if len(qa) > 0:
- self.questions_answered = '|'.join([qa, str(question_id)])
- else:
- self.questions_answered = str(question_id)
- self.save()
-
- return self.skip(question_id)
-
- def skip(self, question_id):
- """
- Skips the current question and returns the next sequentially
- available question.
- """
- qu = self.get_unanswered_questions()
- qs = self.questions.split('|')
-
- if len(qu) == 0:
- return ''
-
- try:
- q_index = qs.index(unicode(question_id))
- except ValueError:
- return qs[0]
-
- start = q_index + 1
- stop = q_index + 1 + len(qs)
- q_list = islice(cycle(qs), start, stop)
- for next_q in q_list:
- if next_q in qu:
- return next_q
-
- return qs[0]
-
- def time_left(self):
- """Return the time remaining for the user in seconds."""
- dt = datetime.datetime.now() - self.start_time.replace(tzinfo=None)
- try:
- secs = dt.total_seconds()
- except AttributeError:
- # total_seconds is new in Python 2.7. :(
- secs = dt.seconds + dt.days*24*3600
- total = self.question_paper.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 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 update_status(self):
- """ Sets status to completed """
- self.status = 'completed'
-
- 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
- return u'Question paper for {0} {1}'.format(u.first_name, u.last_name)
-
-
-###############################################################################
-class AssignmentUpload(models.Model):
- user = models.ForeignKey(Profile)
- assignmentQuestion = models.ForeignKey(Question)
- assignmentFile = models.FileField(upload_to=get_assignment_dir)
-
-
-################################################################################
-class TestCase(models.Model):
- question = models.ForeignKey(Question, blank=True, null = True)
-
- # Test case function name
- func_name = models.CharField(blank=True, null = True, max_length=200)
-
- # Test case Keyword arguments in dict form
- kw_args = models.TextField(blank=True, null = True)
-
- # Test case Positional arguments in list form
- pos_args = models.TextField(blank=True, null = True)
-
- # Test case Expected answer in list form
- expected_answer = models.TextField(blank=True, null = True)