#15953: Allow setting individual fields as 'unique' from the model Meta options
-------------------------------------+-------------------------------------
Reporter: julien | Owner: nobody
Type: New | Status: new
feature | Component: Database layer
Milestone: | (models, ORM)
Version: 1.3 | Severity: Normal
Resolution: | Keywords:
Triage Stage: | Has patch: 0
Unreviewed | Needs tests: 0
Needs documentation: 0 | Easy pickings: 0
Patch needs improvement: 0 |
-------------------------------------+-------------------------------------
Description changed by julien:
Old description:
> I'm dealing with this case:
>
> {{{#!python
> class A(models.Model):
> blah = models.CharField(max_length=100)
>
> class Meta:
> abstract = True
>
> class B(A):
> pass
> }}}
>
> ... where `A` is in a separate app than `B` and is used in multiple
> different contexts. I need to have the `blah` field be unique for `B`,
> whereas it shouldn't necessarily be unique in every other context where
> it is used. The only way I've found so far is:
>
> {{{#!python
> class B(A):
> pass
>
> B._meta.get_field('blah')._unique = True # Ugliness alert!
> }}}
>
> Is it envisageable to allow setting the `unique` flag for individual
> fields from the Meta options, in the same way as with `unique_together`?
> Something like this for example:
>
> {{{#!python
> class B(models.Model):
>
> class Meta:
> unique = ('blah',)
> }}}
New description:
I'm dealing with this case:
{{{#!python
class A(models.Model):
blah = models.CharField(max_length=100)
class Meta:
abstract = True
class B(A):
pass
}}}
... where `A` is in a separate app than `B` and is used in multiple
different contexts. I need to have the `blah` field be unique for `B`,
whereas it shouldn't necessarily be unique in every other context where it
is used. The only way I've found so far is:
{{{#!python
class B(A):
pass
B._meta.get_field('blah')._unique = True # Ugliness alert!
}}}
Is it envisageable to allow setting the `unique` flag for individual
fields from the Meta options, in the same way as with `unique_together`?
Something like this for example:
{{{#!python
class B(A):
class Meta:
unique = ('blah',)
}}}
--
--
Ticket URL: <http://code.djangoproject.com/ticket/15953#comment:2>
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