Opened 8 years ago
Closed 8 years ago
#27933 closed Bug (duplicate)
FieldDoesNotExist if remove foreign key and remove unique constraint at the same time
Reported by: | Jindi Wu | Owned by: | nobody |
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Component: | Migrations | Version: | 1.10 |
Severity: | Normal | Keywords: | |
Cc: | Triage Stage: | Unreviewed | |
Has patch: | no | Needs documentation: | no |
Needs tests: | no | Patch needs improvement: | no |
Easy pickings: | no | UI/UX: | no |
Description (last modified by )
Remove foreign key b
and unique_together
constraint from model like following:
class A(models.Model): name = models.CharField(max_length=10) b = models.ForeignKey('B') class Meta: unique_together = (('b','name'),) class B(models.Model): text = models.CharField(max_length=10)
-->
class A(models.Model): name = models.CharField(max_length=10) class Meta: unique_together = (('name'),) class B(models.Model): text = models.CharField(max_length=10)
Such error will be thrown.
raise FieldDoesNotExist('%s has no field named %r' % (self.object_name, field_name)) django.core.exceptions.FieldDoesNotExist: A has no field named 'b'
However if swap the order of generated two operations within the migration AlterUniqueTogether
and RemoveField
, it'll work.
Is this a bug or am I using Django the wrong way?
Sample app that can reproduce the issue is attached.
Attachments (1)
Change History (4)
by , 8 years ago
comment:1 by , 8 years ago
Description: | modified (diff) |
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comment:2 by , 8 years ago
Description: | modified (diff) |
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comment:3 by , 8 years ago
Component: | Uncategorized → Migrations |
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Resolution: | → duplicate |
Status: | new → closed |
Type: | Uncategorized → Bug |
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Looks like a duplicate of #26180.