class UserAndQuiz(models.Model):
user = models.ForeignKey(User,on_delete=models.CASCADE)
quiz = models.ForeignKey(QuizInfo,on_delete=models.CASCADE)
created_at = models.DateTimeField(null=True,blank=True)
is_submit = models.BooleanField(default=False)
result = models.IntegerField(default=0)
class QuizInfo(models.Model):
quiz_name = models.CharField(unique=True,max_length=255)
number_of_question = models.IntegerField()
number_of_option = models.IntegerField()
quiz_type = models.CharField(max_length=255,choices=quiz_status)
price = models.FloatField(default=0.0,null=True,blank=True)
image = models.ImageField(upload_to='pics')
description = models.TextField()
def __str__(self) -> str:
return self.quiz_name
Related SQL query = SELECT sum(price) from quizsession_quizinfo as q JOIN user_userandquiz as p on q.id = p.quiz_id where p.is_submit=1;
what is the ORM of this query?
CodePudding user response:
If I understand the SQL correctly: We are trying to get the total price of all Submitted Quizes
I believe you'd use aggregate and do something like this:
from django.db.models import Sum
aggrDict = UserAndQuiz.objects.filter(is_submit=True).aggregate(total_price=Sum('quiz__price'))
print(aggrDict) # {'total_price': float}