When I use django, I created two models.
class GroupModel(models.Model):
group_name = models.CharField(max_length=2, null=False, default="A")
class MemberModel(models.Model):
name = models.CharField(max_length=8, null=False, default="")
group = models.ForeignKey(
to=GroupModel,
on_delete=models.CASCADE,
related_name="members",
db_column="member",
)
isActive = models.BooleanField(null=False, default=False)
The contents lisk:
[{'group_name': 'GROUP_A',
'id': 1,
'members': [{'isActive': False, 'name': 'j'},
{'isActive': True, 'name': 'b'},
{'isActive': True, 'name': 'y'}]},
{'group_name': 'GROUP_B',
'id': 2,
'members': [{'isActive': True, 'name': 'f'},
{'isActive': True, 'name': 'i'},
{'isActive': True, 'name': 'y'}]}]
Now, I want to get the queryset wiht isActive=False
queryset = GroupModel.objects.filter(members__isActive=False).distinct()
but the resutl is
[{'group_name': 'GROUP_A',
'id': 1,
'members': [{'isActive': False, 'name': 'j'},
{'isActive': True, 'name': 'b'},
{'isActive': True, 'name': 'y'}]}]
How I can get the expected result list
[{'group_name': 'GROUP_A',
'id': 1,
'members': [{'isActive': False, 'name': 'j'}]}]
CodePudding user response:
I think you should use MemberModel instead on GroupModel class in your queryset
queryset = MemberModel.objects.filter(isActive=False).distinct()
for objects in queryset:
print(objects.name)
Thank you
CodePudding user response:
You can filter the relation as well with a Prefetch
object [Django-doc]:
from django.db.models import Prefetch
queryset = GroupModel.objects.filter(
members__isActive=False
).prefetch_related(
Prefetch('members', MemberModel.objects.filter(isActive=False))
).distinct()