def list(self, request, *args, **kwargs):
"""
List all questions in specific survey with choices
"""
try:
survey = Survey.objects.get(id=int(request.GET["survey_id"]))
except:
return Response(status=status.HTTP_400_BAD_REQUEST)
questions = cache.get("survey:" + str(survey.id) + ":questions")
if questions is not None:
return Response(questions)
else:
questions = redis.set_questions_cache(survey)
return Response(questions)
def create(self, request, *args, **kwargs):
"""
Create result if result is not exist or updated datetime is past than the comparison target
Otherwise get ID of existing result
"""
try:
category = request.data["category"]
except:
return Response(status=status.HTTP_400_BAD_REQUEST)
try:
survey = Survey.objects.get(id=int(request.data["survey_id"]))
except:
return Response(status=status.HTTP_400_BAD_REQUEST)
try:
result = Result.objects.filter(survey=survey, category=category, user=request.user).latest("id")
except:
result = None
# Choose 'unawareness' for unaswered questions
if request.user not in survey.participants.all():
all_questions = cache.get("survey:" + str(survey.id) + ":questions")
if all_questions is None:
all_questions = redis.set_questions_cache(survey)
all_questions_id_list = []
for i in range(0, len(all_questions)):
all_questions_id_list.append(all_questions[i]["id"])
answered_questions_id_list = []
answers = Answer.objects.select_related("choice").filter(user=request.user, choice__question__survey=survey)
for answer in answers:
answered_questions_id_list.append(answer.choice.question.id)
# Extract id list of unanswered question
unanswered_questions_id_list = list(set(all_questions_id_list) - set(answered_questions_id_list))
# Choose 'unawareness' for unaswered questions, or choose randomly if failed
for unanswered_question_id in unanswered_questions_id_list:
question = Question.objects.prefetch_related("choices").get(id=unanswered_question_id)
try:
Answer(user=request.user, choice=question.choices.filter(factor=7)[0]).save()
except:
Answer(user=request.user, choice=question.choices.all().order_by("?")[0]).save()
# Add user to participant list of survey
survey.participants.add(request.user)
comparison_targets = cache.get("survey:" + str(survey.id) + ":comparison_targets:data")
if comparison_targets is None:
comparison_targets = redis.set_survey_data_of_comparison_targets_cache(survey)
# Data of comparison target
target_data = comparison_targets["data"]
comparison_targets_updated_at = comparison_targets["updated_at"]
user_data = utilities.get_survey_data_of_user(request.user, survey)
if category == "factor_list":
# Get ID of result object(=DO NOT CREATE NEW ONE) only if
# (1) Result is exist
# (2) User's answers are not updated after result object is created
if result is not None and result.updated_at > user_data["updated_at"]:
return Response(
{"state": True, "id": result.id, "message": "Result already exist."}, status=status.HTTP_200_OK
)
factor_list = user_data["factor_list"]
record = ""
# Get question count
questions_count = cache.get("survey:" + str(survey.id) + "questions:count")
if questions_count is None:
questions_count = redis.set_questions_count_cache(survey)
for i in range(0, min(len(factor_list), questions_count)):
record += str(i + 1) + "=" + str(factor_list[i]) + "&"
record = record[:-1]
elif category == "agreement_score":
# Get ID of result object(=DO NOT CREATE NEW ONE) only if
# (1) Result is exist
# (2) User's answers are not updated after result object is created
if result is not None and result.updated_at > user_data["updated_at"]:
return Response(
{"state": True, "id": result.id, "message": "Result already exist."}, status=status.HTTP_200_OK
)
user_data["name"] = "나"
record = utilities.get_agreement_score_result(user_data, *target_data)
elif category == "city_block_distance":
# Get ID of result object(=DO NOT CREATE NEW ONE) only if
# (1) Result is exist
# (2) User's answers are not updated after result object is created
# (3) Answers of comparison targets are not updated after result object is created
if (
result is not None
and result.updated_at > user_data["updated_at"]
and result.updated_at > max(comparison_targets_updated_at)
):
return Response(
{"state": True, "id": result.id, "message": "Result already exist."}, status=status.HTTP_200_OK
)
questions_category = []
questions = cache.get("survey:" + str(survey.id) + ":questions")
for question in questions:
questions_category.append(question["subtitle"])
record = utilities.get_city_block_distance_result(
questions_category, user_data["factor_list"], *target_data
)
elif category == "pca":
rotation_matrix = cache.get("survey:" + str(survey.id) + ":rotation_matrix")
if rotation_matrix is None:
try:
rotation_matrix = redis.set_rotation_matrix_cache(survey)
except:
return Response(status=status.HTTP_500_INTERNAL_SERVER_ERROR)
# Get ID of result object(=DO NOT CREATE NEW ONE) only if
# (1) Result is exist
# (2) User's answers are not updated after result object is created
# (3) Answers of comparison targets are not updated after result object is created
# (4) Rotation matrix is not updated after result object is created
if (
result is not None
and result.updated_at > user_data["updated_at"]
and result.updated_at > max(comparison_targets_updated_at)
and result.updated_at > rotation_matrix["updated_at"]
):
return Response(
{"state": True, "id": result.id, "message": "Result already exist."}, status=status.HTTP_200_OK
)
user_dict = {"name": "나", "color": "#9b59b6", "factor_list": user_data["factor_list"]}
target_data.append(user_dict)
record = utilities.get_pca_result(rotation_matrix["matrix"], *target_data)
else:
return Response(status=status.HTTP_400_BAD_REQUEST)
data = request.data
data["record"] = record
if category == "city_block_distance":
data["expected_target"] = request.user.supporting_party
elif category == "pca":
data["x_axis_name"] = rotation_matrix["x_axis_name"]
data["y_axis_name"] = rotation_matrix["y_axis_name"]
serializer = self.get_serializer(data=data)
serializer.is_valid(raise_exception=True)
self.perform_create(serializer)
headers = self.get_success_headers(serializer.data)
return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)
def update_cache_when_choice_updated(sender, instance, created, **kwargs):
"""
Update cache when choice updated
"""
redis.set_questions_cache(instance.question.survey)
def update_cache_when_question_updated(sender, instance, created, **kwargs):
"""
Update cache when question updated
"""
redis.set_questions_cache(instance.survey)
redis.set_questions_count_cache(instance.survey)