I have two models - User and Rank. During def save() I want the Users Rank automatically assigned to a Rank depending on the points the user has and the min_points from the Rank model.
Models
class User(AbstractUser):
points = models.IntegerField(default=0)
rank = models.ForeignKey(Rank, on_delete=models.SET_NULL, null=True, blank=True)
class Rank(models.Model):
rank = models.CharField(max_length=200)
min_points = models.IntegerField()
Now I added save() function to User model to check the user points and compare to the correct Rank
# ...user model
def save(self, *args, **kwargs):
for i in Rank.objects.all():
if self.points >= i.min_points:
self.rank == Rank.objects.get(id=i.id)
super().save(*args, **kwargs)
Unfortunally nothing happend after saving or creating a new user.
My IDE throw warning: Unresolved attribute reference 'objects' for class 'Rank'
Do I miss something? I cant figure out the issue...
There is no need to enumerate over the Rank
objects. We can retrieve the Rank
with the largest amount of min_points
that is less than or equal to the self.points
with:
def save(self, *args, **kwargs):
self.rank = Rank.objects.filter(
min_points__lte=self.points
).latest('min_points')
return super().save(*args, **kwargs)