#27560: Formset.save for model with foreign key to concrete base model
-------------------------------------+-------------------------------------
Reporter: Lorenzo | Owner: nobody
Peña |
Type: | Status: new
Uncategorized |
Component: Forms | Version: 1.9
Severity: Normal | Keywords: formset
| inline_formset
Triage Stage: | inline_formsetfactory
Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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{{{
class A(models.Model):
pass
class B(A):
pass
class C(models.Model):
some_model = models.ForeignKey(SomeModel)
a_link = models.ForeignKey(A)
}}}
I'm using an inlineformset_factory where the parent model is SomeModel and
the child model is C.
When calling formset.save() I'm getting an error from
django/forms/models.py (line 910)
{{{
910: pk_value = getattr(self.instance, self.fk.remote_field.field_name)
911: setattr(obj, self.fk.get_attname(), getattr(pk_value, 'pk',
pk_value))
}}}
The getattr call fails
if I wrap both lines in: if hasattr(self.instance,
self.fk.remote_field.field_name):
it works good.
Not sure if the condition is the way to fix the bug or it's just
preventing the original cause from happening.
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Ticket URL: <https://code.djangoproject.com/ticket/27560>
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