#29260: Django makes an extra UPDATE query when custom PK is evaluating before
save.
-------------------------------------+-------------------------------------
Reporter: user0007 | Owner: nobody
Type: Bug | Status: new
Component: Database | Version: 2.0
layer (models, ORM) |
Severity: Normal | Keywords:
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
-------------------------------------+-------------------------------------
Using model's instance:
{{{
class Account(models.Model):
id = models.UUIDField(
primary_key=True,
default=uuid.uuid4,
editable=False
)
title = models.TextField()
>> account = Account()
>> account.title = "abc"
>> account.save()
1. UPDATE "app_account" SET "title" = \'\', WHERE "app_account"."id" =
\'67c9327d-150e-419f-b493-0c2c59a045c3\'::uuid',
2. INSERT INTO "app_account" ("title", "id") VALUES (\'abc\', \'3d8c1b3c-
214a-4798-a0fa-d4c22c2b877f\'::uuid)
}}}
Using model's manager method:
{{{
>> Account.objects.create(title="abc")
1. INSERT INTO "app_account" ("title", "id") VALUES (\'abc\', \'3d8c1b3c-
214a-4798-a0fa-d4c22c2b877f\'::uuid)
}}}
Related issue? https://code.djangoproject.com/ticket/29129
--
Ticket URL: <https://code.djangoproject.com/ticket/29260>
Django <https://code.djangoproject.com/>
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