Hello all,
I have a model with a ForeignKey field that sets null=True:
class Title(models.Model):
#...
supplier = models.ForeignKey(Contact, verbose_name='Supplier',
null=True)
...but when I try to save an instance without a supplier:
>>> t = Title()
>>> t.save()
[complete Traceback below...]
IntegrityError: core_title.supplier_id may not be NULL
Even weirder, this error does not occur when I save Title objects
without a supplier in some of my unit tests -- at least, all tests
succeed.
Is there some reason that Django would implicitly forbid this field to
be NULL, despite my having explicitly set null=True in the model?
I am using sqlite3 and Django 0.96, if that's relevant.
Thanks,
Richard
-----------------------------------------------------------------------------------------------------------------------
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "/var/lib/python-support/python2.5/django/db/models/base.py",
line 238, in save
','.join(placeholders)), db_values)
File "/var/lib/python-support/python2.5/django/db/backends/util.py",
line 12, in execute
return self.cursor.execute(sql, params)
File "/var/lib/python-support/python2.5/django/db/backends/sqlite3/
base.py", line 93, in execute
return Database.Cursor.execute(self, query, params)
IntegrityError: core_title.supplier_id may not be NULL
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