def to_representation(self, instance):
"""
Only quiz_ids are stored originally in concept sections
Fetch quiz details from the quiz_ids
"""
ret = super(ConceptSectionSerializer, self).to_representation(instance)
if instance.has_quizzes():
quiz_ids = ret['data']['quiz_ids']
quiz_models = Quiz.get_detailed_quizzes_in(quiz_ids)
quiz_list = QuizSerializer(quiz_models, many=True).data
quiz_dict = {}
for quiz in quiz_list:
quiz_dict[quiz['id']] = quiz
ordered_quizzes = []
for quiz_id in quiz_ids:
ordered_quizzes.append(quiz_dict[quiz_id])
del ret['data']['quiz_ids']
ret['data']['quizzes'] = ordered_quizzes
elif instance.has_codequizzes():
quiz_ids = ret['data']['quiz_ids']
models = CodeQuiz.objects.filter(pk__in=quiz_ids)
quizzes = CodeQuizSerializer(models, many=True).data
quiz_dict = {}
for quiz in quizzes:
quiz_dict[quiz['id']] = quiz
ordered_quizzes = []
for quiz_id in quiz_ids:
ordered_quizzes.append(quiz_dict[quiz_id])
del ret['data']['quiz_ids']
ret['data']['quizzes'] = ordered_quizzes
return ret
def course_pretest_quiz(self):
section_type = ConceptSection.COURSE_PRETEST
section = self.conceptsection_set.filter(type=section_type).last()
if not section:
return None
quiz_ids = section.get_quiz_info()
if not quiz_ids:
return None
quiz_id = quiz_ids[0]
quiz = Quiz.get_detailed_quizzes_in([quiz_id]).first()
if not quiz:
# todo -> log error here
return None
serializer = QuizSerializer(quiz)
return serializer.data
def course_pretest_quiz(self):
section_type = ConceptSection.COURSE_PRETEST
section = self.conceptsection_set.filter(type=section_type).last()
if not section:
return None
quiz_ids = section.get_quiz_info()
if not quiz_ids:
return None
quiz_id = quiz_ids[0]
quiz = Quiz.get_detailed_quizzes_in([quiz_id]).first()
if not quiz:
# todo -> log error here
return None
serializer = QuizSerializer(quiz)
return serializer.data
def get_quizzes_in_sections(klass, sections):
quiz_sections = klass.get_quiz_sections(sections)
all_quiz_ids = []
section_id_by_quiz_id = {}
section_quizzes = defaultdict(list)
for section in quiz_sections:
for quiz_id in section.get_quiz_info():
all_quiz_ids.append(quiz_id)
section_id_by_quiz_id[quiz_id] = section.id
quizzes = Quiz.get_detailed_quizzes_in(all_quiz_ids)
for quiz in quizzes:
section_id = section_id_by_quiz_id[str(quiz.id)]
serializer = QuizSerializer(quiz)
section_quizzes[str(section_id)].append(serializer.data)
return section_quizzes
def get_quizzes_in_sections(klass, sections):
quiz_sections = klass.get_quiz_sections(sections)
all_quiz_ids = []
section_id_by_quiz_id = {}
section_quizzes = defaultdict(list)
for section in quiz_sections:
for quiz_id in section.get_quiz_info():
all_quiz_ids.append(quiz_id)
section_id_by_quiz_id[quiz_id] = section.id
quizzes = Quiz.get_detailed_quizzes_in(all_quiz_ids)
for quiz in quizzes:
section_id = section_id_by_quiz_id[str(quiz.id)]
serializer = QuizSerializer(quiz)
section_quizzes[str(section_id)].append(serializer.data)
return section_quizzes
