Deleting group gives Vikundi matching query does not exist.

[IanLawrence]

Environment:

Request Method: POST
Request URL: http://tangaza.nrcc.noklab.com/admin/Tangaza/vikundi/3/delete/

Django Version: 1.3.1
Python Version: 2.7.3
Installed Applications:
['django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'tangaza.Tangaza',
'django.contrib.admin']
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.transaction.TransactionMiddleware',
'tangaza.Tangaza.forms.ThreadLocals')

Traceback:
File "/usr/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response

1.                     response = callback(request, _callback_args, *_callback_kwargs)
   

   File "/usr/lib/python2.7/dist-packages/django/contrib/admin/options.py" in wrapper

2.             return self.admin_site.admin_view(view)(_args, *_kwargs)
   

   File "/usr/lib/python2.7/dist-packages/django/utils/decorators.py" in _wrapped_view

3.                 response = view_func(request, _args, *_kwargs)
   

   File "/usr/lib/python2.7/dist-packages/django/views/decorators/cache.py" in _wrapped_view_func

4.     response = view_func(request, _args, *_kwargs)
   

   File "/usr/lib/python2.7/dist-packages/django/contrib/admin/sites.py" in inner

5.         return view(request, _args, *_kwargs)
   

   File "/usr/lib/python2.7/dist-packages/django/utils/decorators.py" in _wrapper

6.         return bound_func(_args, *_kwargs)
   

   File "/usr/lib/python2.7/dist-packages/django/utils/decorators.py" in _wrapped_view

7.                 response = view_func(request, _args, *_kwargs)
   

   File "/usr/lib/python2.7/dist-packages/django/utils/decorators.py" in bound_func

8.             return func(self, _args2, *_kwargs2)
   

   File "/usr/lib/python2.7/dist-packages/django/db/transaction.py" in inner

9.             res = func(_args, *_kwargs)
   

   File "/usr/lib/python2.7/dist-packages/django/contrib/admin/options.py" in delete_view

10.         self.delete_model(request, obj)
    

    File "/usr/lib/python2.7/dist-packages/django/contrib/admin/options.py" in delete_model

11.     obj.delete()
    

    File "/usr/lib/python2.7/dist-packages/django/db/models/base.py" in delete

12.     collector.delete()
    

    File "/usr/lib/python2.7/dist-packages/django/db/models/deletion.py" in decorated

13.         func(self, _args, *_kwargs)
    

    File "/usr/lib/python2.7/dist-packages/django/db/models/deletion.py" in delete

14.                 sender=model, instance=obj, using=self.using
    

    File "/usr/lib/python2.7/dist-packages/django/dispatch/dispatcher.py" in send

15.         response = receiver(signal=self, sender=sender, **named)
    

    File "/usr/share/tangaza/django/tangaza/apache/../../tangaza/Tangaza/signals.py" in user_left_group

16. logger.debug("Deleting user group %s" % kwargs)
    

    File "/usr/lib/python2.7/dist-packages/django/db/models/base.py" in repr

17.         u = unicode(self)
    

    File "/usr/share/tangaza/django/tangaza/apache/../../tangaza/Tangaza/models.py" in unicode

18.     return "Group: %s, User: %s, Slot: %d" % (self.group.group_name, self.user.name_text, self.slot)
    

    File "/usr/lib/python2.7/dist-packages/django/db/models/fields/related.py" in get

19.             rel_obj = QuerySet(self.field.rel.to).using(db).get(**params)
    

    File "/usr/lib/python2.7/dist-packages/django/db/models/query.py" in get

20.                 % self.model._meta.object_name)
    

Exception Type: DoesNotExist at /admin/Tangaza/vikundi/3/delete/
Exception Value: Vikundi matching query does not exist.