A few questions:
You are posting this example because you believe you have found a bug in
django, correct? Otherwise, please post to the users group.
The behavioral problem described is "exclude - no really exclude",
correct? You perform an exclusion and do not see the exclusion and then
show the queryset.
I am not an expert, but I believe the reason the exclude is not working
might be that 'id' as a field of Agency is not a UUID. The UUID primary
key is in Applications. Agency would have an 'id' as a built in Primary
key, but it will be an integer. Since the primary key for Agency is a
OneToOne (unique ForeignKey), I suspect, but do not know that id as a
built-in member may follow. Either way it is probably not a UUID and will
not match for exclusion.
On initial inspection, I doubt this example is inappropriate behavior.
Regards,
Ira
On Wednesday, December 12, 2018 at 2:42:05 PM UTC-5, igor malinov wrote:
>
> 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-4095-9037-98bde29a3d78otherfields...otherfields..
>
> 7cb60afc-109d-4570-ad24-6cad6b7ddd9aotherfields...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-ad24-6cad6b7ddd9a1
> 2 2018-12-11 19:25:58.818000 9e71cff4-443d-4c60-ac2d-9dcca2a9c147
> 7cb60afc-109d-4570-ad24-6cad6b7ddd9a0
>
>
> -- myapp_agency
>
> organization_ptr_idaccreditation 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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