Getting Count Result With Multiple Conditions - django

Question

I have models named Class, StudentList, Child, TakingQuiz and TakingQuizAnswer. Students can take exams. In this case, when they start the exam, data is added to the 'TakingQuiz' table. With each new answer, the answers are also recorded in the TakingQuizAnswer table.
The result I want to reach -> The question with the most mistakes in the exams solved by the students in a class.
I tried to use Count for this. I'm filtering answer_is_correct to False but that is insufficient. I also need to filter this data for the question column. So I need to get rows where both question and answer_is_correct = False columns are the same and return the first few most repetitive data as results.
I always get a general result in my experiments. I can't include rows where the question column is the same. How can I access the questions with the most mistakes in exams solved by students studying in a class?
Serializer
class ClassSerializerReport(ModelSerializer):
instructor = InstructorSerializerReport(source="instructor.user")
students = StudenListSerializerReport(many=True,
source="student_list_class")
max_incorrect_question = serializers.SerializerMethodField()
class Meta:
model = Class
exclude = [
"created_at",
"updated_at",
"school",
]
def get_max_incorrect_question(self, obj):
data = Class.objects.filter(id = obj.id).values('student_list_class__child__child_taking_quiz__taking_quizes').annotate(res = Count('student_list_class__child__child_taking_quiz__taking_quizes__question', filter = Q(student_list_class__child__child_taking_quiz__taking_quizes__answer_is_correct = False)))
print(data)
return {"question_id" : "I couldn't access that result yet."}
Related Models
class Class(AbstractSchoolBaseModel):
school = models.ForeignKey(
"school.School",
on_delete=models.CASCADE,
related_name="classes_school",
)
instructor = models.ForeignKey(
"account.InstructorProfile",
on_delete=models.CASCADE,
related_name="instructors_school",
)
name = models.CharField(
max_length=50,
)
grade = models.IntegerField(
)
class StudentList(AbstractSchoolBaseModel):
school_class = models.ForeignKey(
"school.Class",
on_delete=models.CASCADE,
related_name="student_list_class",
)
child = models.ForeignKey(
"account.ChildProfile",
on_delete=models.CASCADE,
related_name="student_list_children",
)
class ChildProfile(models.Model):
user = models.OneToOneField(
settings.AUTH_USER_MODEL,
on_delete=models.CASCADE,
primary_key=True,
related_name="user_child")
city = models.ForeignKey(
"country.City",
on_delete=models.SET_NULL,
null=True,
blank=True,
related_name="city_child_profiles")
hobbies = models.CharField(
max_length=500,
null=True,
blank=True,
)
class TakingQuiz(AbstractQuizBaseModel):
quiz = models.ForeignKey("quiz.Quiz", on_delete=models.DO_NOTHING, related_name="quiz_taking_quiz")
child = models.ForeignKey("account.ChildProfile", on_delete=models.CASCADE, related_name = "child_taking_quiz")
title = models.CharField(max_length=150, editable=False, default="-")
total_point = models.PositiveIntegerField(default=0)
class TakingQuizAnswer(AbstractQuizBaseModel):
taking_quiz = models.ForeignKey("quiz.TakingQuiz", on_delete=models.CASCADE, related_name="taking_quizes")
question = models.ForeignKey("quiz.Question", on_delete=models.DO_NOTHING, related_name="question_taking_quiz"e)
answer = models.ForeignKey("quiz.Answer", on_delete= models.DO_NOTHING, related_name="answer_taking_quiz")
taking_quiz_title = models.TextField(editable=False, null=True, blank=True)
question_text = models.TextField(editable=False, null=True, blank=True)
question_topic_content = models.TextField(editable=False, null=True, blank=True)
answer_text = models.TextField(editable=False, null=True, blank=True)
answer_is_correct = models.BooleanField(editable=False, null=True, blank=True)
class Quiz(AbstractQuizBaseModel):
ENABLED_CHOICES = (
(True, _("Active")),
(False, _("Not Active")),
)
book = models.ForeignKey("book.Book", on_delete= models.CASCADE, related_name="book_quiz")
title = models.CharField(max_length=150)
enabled = models.BooleanField(choices=ENABLED_CHOICES, default=False)
class Question(AbstractQuizBaseModel):
quiz = models.ForeignKey("quiz.Quiz", on_delete=models.DO_NOTHING, related_name="question_quiz")
question = models.CharField(max_length=500)
topic = models.CharField(max_length=500)
class Answer(AbstractQuizBaseModel):
IS_CORRECT_CHOICES = (
(True, _("Correct Answer")),
(False, _("Wrong Answer"))
)
question = models.ForeignKey("quiz.Question", on_delete=models.CASCADE, related_name = "question_answer")
answer = models.CharField(max_length=500)
is_correct = models.BooleanField(choices=IS_CORRECT_CHOICES, default=False)