#31394: Impossible to create with an inverse one-to-one relationship
-------------------------------------+-------------------------------------
Reporter: scwall | Owner: nobody
Type: Bug | Status: new
Component: Database | Version: 2.2
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 |
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Hello, I don't know if this is a bug or if it's something wanted. If I
create two models .
**Work >>>**
Application One:
----
{{{
class Foo(models.Model):
foo_bar = models.IntegerField()
def save(self, *args, **kwargs):
created = self._state.adding
super(EqoLevel, self).save(*args, **kwargs)
if created:
self.bar_set.create()
}}}
----
Application Two:
----
{{{
class Bar(models.Model):
foo = models.ForeignKey("app1.Foo",
on_delete=CASCADE,primary_key=True)
foo_bar_2 = models.IntegerField()
}}}
**Not work >>>**
Application One:
----
{{{
class Foo(models.Model):
foo_bar = models.IntegerField()
def save(self, *args, **kwargs):
created = self._state.adding
super(EqoLevel, self).save(*args, **kwargs)
if created:
self.bar_set.create()
}}}
----
Application Two:
----
{{{
class Bar(models.Model):
foo = models.OneToOneField("app1.Foo", on_delete=CASCADE)
foo_bar_2 = models.IntegerField()
}}}
But if I use a I can't run a one to one creation with an inverse
relationship and yet during makemigrations it says (HINT:
ForeignKey(unique=True) is usually better served by a OneToOneField.),
Yes but without this function I can't find it. I can also use a signal but
I find it a shame to have to create a signal for the simple creation of a
one to one relationship that foreign key can provide.
Thank's
--
Ticket URL: <https://code.djangoproject.com/ticket/31394>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
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