On May 2, 8:48 am, Anthony <alantho...@gmail.com> wrote:
> I'm trying to instantiate a recursive object model via the admin, but
> am getting an error.
>
> My model:
>
> class Bracket(models.Model):
> m = models.ForeignKey(OtherModel)
> parent = models.ForeignKey('self', blank=True, null=True)
> name = models.CharField(max_length = 30)
>
> The error:
>
> IntegrityError at /admin/myapp/bracket/add/
>
> myapp_bracket.parent_id may not be NULL
>
> Request Method: POST
> Request URL: http://mysite/admin/myapp/bracket/add/
> Exception Type: IntegrityError
> Exception Value:
>
> myapp_bracket.parent_id may not be NULL
>
> What do I need to let the admin interface allow me to enter a root
> level instance? I was able to enter the brackets via the shell, so I
> think the model is set up properly.
No, you need to allow null=True on the foreign key, otherwise you
can't have a top-level parent bracket.
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