#15321: Models._get_unique_checks() does not return grandparents' unique checks
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Reporter: jku | Owner: nobody
Status: new | Milestone:
Component: Database layer (models, ORM) | Version: 1.2
Keywords: models, unique checks | Triage Stage: Unreviewed
Has patch: 0 |
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Consider the following models:
{{{
#!python
class Project(models.Model):
title = models.CharField(max_length=255)
internal_id = models.CharField(max_length=255, unique=True)
class SubProject(Project):
# ... fields of SubProject ...
pass
class SubSubProject(SubProject):
# ... fields of SubSubProject ...
pass
}}}
Following code works as expected (b.full_clean() throws a
ValidationError):
{{{
#!python
a = SubProject( title = 'A', internal_id = 1 )
a.save()
b = SubProject( title = 'B', internal_id = 1 )
b.full_clean() # Throws ValidationError
}}}
Following code does not work as expected (b.full_clean() does not throw an
exception, b.save() throws an IntegrityError):
{{{
#!python
a = SubSubProject( title = 'A', internal_id = 2 )
a.save()
b = SubSubProject( title = 'B', internal_id = 2 )
b.full_clean() # Does not throw any exception!
b.save() # Throws IntegrityError, of course!
}}}
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Ticket URL: <http://code.djangoproject.com/ticket/15321>
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