#32370: Model._perform_unique_checks cannot properly validate simultaneous
adding
and changing
-------------------------------------+-------------------------------------
Reporter: Roman | Owner: nobody
Type: Bug | Status: new
Component: Database | Version: 3.1
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 |
-------------------------------------+-------------------------------------
Imagine there is a model with a unique field.
{{{
class Test(models.Model):
index = models.PositiveIntegerField()
name = models.CharField(max_length=256)
class Meta:
constraints = (
models.UniqueConstraint(
fields=('index'),
name='%(app_label)s_%(class)s_U1'),
)
}}}
If I have one model with values (0, "old") and then try to update existing
model to (1, "old") and simultaneously add (0, "new"), checks in
Model._perform_unique_checks fail, despite there will be no constraint
violation at the end of transaction.
--
Ticket URL: <https://code.djangoproject.com/ticket/32370>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
--
You received this message because you are subscribed to the Google Groups
"Django updates" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/django-updates/049.79e5c03569efa67a55887d48f9dd4940%40djangoproject.com.
