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Use an exists subquery

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shamoon 2024-12-11 13:42:00 -08:00
parent ef389348e5
commit 4d2e211ec1
1 changed files with 5 additions and 6 deletions
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11
src/documents/filters.py
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@ -10,6 +10,7 @@ from django.db.models import Case
from django.db.models import CharField from django.db.models import CharField
from django.db.models import Count from django.db.models import Count
from django.db.models import DateTimeField from django.db.models import DateTimeField
from django.db.models import Exists
from django.db.models import FloatField from django.db.models import FloatField
from django.db.models import IntegerField from django.db.models import IntegerField
from django.db.models import OuterRef from django.db.models import OuterRef
@ -914,13 +915,11 @@ class DocumentsOrderingFilter(OrderingFilter):
# We need to annotate the queryset with the custom field value # We need to annotate the queryset with the custom field value
custom_field_value=annotation, custom_field_value=annotation,
# We also need to annotate the queryset with a boolean for sorting whether the field exists # We also need to annotate the queryset with a boolean for sorting whether the field exists
has_field=Case( has_field=Exists(
When( CustomFieldInstance.objects.filter(
custom_fields__field_id=custom_field_id, document_id=OuterRef("id"),
then=Value(1), field_id=custom_field_id,
), ),
default=Value(0),
output_field=IntegerField(),
), ),
) )