<Model> matching query does not exist - django

Question

I've learned python django since three days ago .
I wanted to remove an field from model, so I put the '#' front of that field.
Then I started the server again, but it gave me such an error message
'Userprofile matching query does not exist' (Userprofile is the model which I made.)
How can I solve this problem. I'm just a totally new to django, so even it's not easy to question my problem. If the clue is not enough, please tell me what other information is need.
p.s here is the total error message.
Environment:
Request Method: GET
Request URL: h ttp://localhost:8000/
Django Version: 1.6.1
Python Version: 2.7.3
Installed Applications:
('django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.staticfiles',
'admin_tools',
'admin_tools.theming',
'admin_tools.menu',
'admin_tools.dashboard',
'django.contrib.admin',
'south',
'autocomplete_light',
'djcelery',
'asap_web',
'facebook',
'venue',
'notification',
'study',
'general',
'member',
'advertise')
Installed Middleware:
('django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware')
Traceback:
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
114. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/jaehoon/PycharmProjects/studysearch/asap_web/__init__.py" in __call__
89. return main()
File "/home/jaehoon/PycharmProjects/studysearch/asap_web/__init__.py" in main
25. return process_request()
File "/home/jaehoon/PycharmProjects/studysearch/asap_web/__init__.py" in process_request
53. return _call_proper_request_processor()
File "/home/jaehoon/PycharmProjects/studysearch/asap_web/__init__.py" in _call_proper_request_processor
77. return getattr(self, method_name)(request, *self.args, **kwargs)
File "/home/jaehoon/PycharmProjects/studysearch/general/views.py" in process_get_request
19. if user.is_authenticated() and user.get_profile().is_required_more_info:
File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/models.py" in get_profile
441. self._state.db).get(user__id__exact=self.id)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py" in get
307. self.model._meta.object_name)
Exception Type: DoesNotExist at /
Exception Value: UserProfile matching query does not exist.

Answer 1

The exception is DoesNotExist which is thrown when you use get to retrieve single instance but it does not exist. In your process_get_request view:
user.get_profile().is_required_more_info
is throwing this exception because there is no profile created for this user. Note that user.get_profile() is deprecated since django 1.5 and you should use OneToOne field or custom user model instead, from docs:
get_profile() Deprecated in Django 1.5: Deprecated since version 1.5:
With the introduction of custom User models, the use of
AUTH_PROFILE_MODULE to define a single profile model is no longer
supported. See the Django 1.5 release notes for more information.