Hi folks,
I have a model with generically-related Link inline objects, and the
admin seems to be trying to overwrite attributes on the first inline
object with those of the second. This causes an error when trying to
save. Here's what the models look like:
class Person(models.Model):
first_name = models.CharField(max_length=50)
last_name = models.CharField(max_length=50)
class Victim(Person):
links = generic.GenericRelation('Link')
class Suspect(Person):
links = generic.GenericRelation('Link')
class Homicide(models.Model):
victim = models.OneToOneField(Victim)
suspects = models.ManyToManyField(Suspect)
links = generic.GenericRelation('Link')
class LinkType(models.Model):
name = models.CharField(max_length=30)
class Link(models.Model):
content_type = models.ForeignKey(ContentType)
object_id = models.IntegerField()
content_object = generic.GenericForeignKey()
link_type = models.ForeignKey(LinkType, related_name="links")
title = models.CharField(max_length=255)
url = models.URLField(blank=True)
source = models.CharField(max_length=255, blank=True)
text = models.TextField(blank=True, null=True)
date_added = models.DateTimeField(default=datetime.datetime.now)
added_by = models.ForeignKey(User)
Here's what admin.py looks like:
class LinkInline(generic.GenericStackedInline):
ct_field = "content_type"
ct_fk_field = "object_id"
model = Link
extra = 3
ordering = ('date_added',)
VictimAdmin, SuspectAdmin and HomicideAdmin all use that inline class.
Usually, adding links works fine. But at a certain point, the admin
will show the first two links with entirely the same attributes filled
in.
Everything is displaying correctly on the main site, and I've check
the values in the ORM, and everything is correct. But because the
admin tries to overwrite values in the change form, it finds an id
that already exists and throws a validation error.
Any idea what's going on?
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