Good day for Everyone.
Because I have self-reference, my queryset no work properly
I have a model
class Agency(Organization):
organization_ptr = models.OneToOneField(to='Organization',
parent_link=True, primary_key=True, related_name='%(class)s', serialize=False,
on_delete=CASCADE)
accreditation = models.OneToOneField('Accreditation', null=True,
blank=True, on_delete=DO_NOTHING)
parent = models.ForeignKey("self", null=True, blank=True,
on_delete=SET_NULL)
class Application(models.Model):
id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
name = models.CharField(max_length=255)
seers = models.ManyToManyField('Agency', blank=True,
through='ApplicationAgencySeer')
# and other
class ApplicationAgencySeer(models.Model):
application = models.ForeignKey(Application, on_delete=models.CASCADE)
agency = models.ForeignKey('Agency', on_delete=models.CASCADE)
status = models.IntegerField('Status', choices=CHOICE)
created = models.DateTimeField(auto_now_add=True)
Now I wanna exclude (simple query)
a =
Application.objects.exclude(seers__agency__id='9e71cff4-443d-4c60-ac2d-9dcca2a9c147')
print(a.query)
" * " change by myself
SELECT *
FROM "myapp_application"
WHERE NOT ("myapp_application"."id" IN (SELECT U1."application_id"
FROM "myapp_applicationagencyseer" U1
INNER JOIN "myapp_agency" U2
ON (U1."agency_id" = U2."organization_ptr_id")
INNER JOIN "myapp_agency" U3
ON (U2."organization_ptr_id" = U3."parent_id")
WHERE U3."organization_ptr_id" =
'9e71cff4-443d-4c60-ac2d-9dcca2a9c147'))
ORDER BY "myapp_application"."created_date" DESC;
result
application_id
7d83d056-5a7d-4095-9037-98bde29a3d78 otherfields... otherfields..
7cb60afc-109d-4570-ad24-6cad6b7ddd9a otherfields... otherfields..
<-- this row error
exclude - no really exclude
Invoked problem by `INNER JOIN "myapp_agency" U3 ON (U2.
"organization_ptr_id" = U3."parent_id")`
--return 0
(SELECT U1."application_id"
FROM "myapp_applicationagencyseer" U1
INNER JOIN "myapp_agency" U2 ON (U1."agency_id" = U2."organization_ptr_id")
INNER JOIN "myapp_agency" U3 ON (U2."organization_ptr_id" = U3."parent_id")
WHERE U3."organization_ptr_id" = '9e71cff4-443d-4c60-ac2d-9dcca2a9c147')
--althouth I have myapp_applicationagencyseer
id created agency_id
application_id status
1 2018-12-10 17:41:14.272684 9e71cff4-443d-4c60-ac2d-9dcca2a9c147
7cb60afc-109d-4570-ad24-6cad6b7ddd9a 1
2 2018-12-11 19:25:58.818000 9e71cff4-443d-4c60-ac2d-9dcca2a9c147
7cb60afc-109d-4570-ad24-6cad6b7ddd9a 0
-- myapp_agency
organization_ptr_id accreditation parent
aff44d42-ce81-4c3e-b6e1-056ed9351adb Null Null
9e71cff4-443d-4c60-ac2d-9dcca2a9c147 10АА71 Null <-- It have
Null parent
Why Query have `INNER JOIN "myapp_agency" U3 ON (U2."organization_ptr_id" =
U3."parent_id")` .
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