It seems that stale content types return `None` for
`ContentTpye.model_class()` , so the following deletes all stale content
types. I would back up and test this extensively first though because
deleting content type you don't want to is dangerous.
for c in ContentType.objects.all():
if not c.model_class():
print "deleting %s"%c
c.delete()
On Monday, February 11, 2013 1:13:42 AM UTC-6, vijay shanker wrote:
>
> we can delete all obsolete ContentType entries manually.
> >>>for each in ContentType.objects.filter(app_label=appname): each.delete()
> thanks
>
> On Friday, May 4, 2007 8:42:51 PM UTC+5:30, Jens Diemer wrote:
>>
>>
>> I have delete some app models. So, in the internal django tables
>> "django_content_type" and "auth_permission" are some old content types
>> entries.
>>
>> So i received errors like: "ContentType matching query does not exist."
>> (When i create a new user group).
>>
>> Is there a way to update the django tables automatically?
>>
>> --
>> Mfg.
>>
>> Jens Diemer
>>
>>
>> ----
>> A django powered CMS: http://www.pylucid.org
>>
>>
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