Seeing error: type object 'Clipboard' has no attribute 'base_objects'

[chrisfong]

Getting this error when clicking into a folder in the Filer plugin in Django Admin. Can someone point me in the right direction? Thanks.

Environment:

Request Method: GET
Request URL: http://app.locals/admin/filer/folder/1/list/

Django Version: 1.4.3
Python Version: 2.7.2
Installed Applications:
('django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.admin',
 'django.contrib.staticfiles',
 'helpers.template',
 'cms',
 'mptt',
 'menus',
 'cms.plugins.text',
 'cms.plugins.picture',
 'cms.plugins.link',
 'cms.plugins.file',
 'cms.plugins.snippet',
 'cms.plugins.googlemap',
 'sekizai',
 'cmsplugin_markup',
 'filer',
 'easy_thumbnails',
 'south',
 'app')
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',
 'helpers.middleware.VisitorTokenMiddleware',
 'helpers.middleware.AdminLocaleURLMiddleware',
 'cms.middleware.page.CurrentPageMiddleware',
 'cms.middleware.user.CurrentUserMiddleware',
 'cms.middleware.toolbar.ToolbarMiddleware')

Traceback:
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
  111.                         response = callback(request, *callback_args, **callback_kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/utils/decorators.py" in _wrapped_view
  91.                     response = view_func(request, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/views/decorators/cache.py" in _wrapped_view_func
  89.         response = view_func(request, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/contrib/admin/sites.py" in inner
  196.             return view(request, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/filer/admin/folderadmin.py" in directory_listing
  293.         for f in file_qs:
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py" in _result_iter
  118.                 self._fill_cache()
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py" in _fill_cache
  892.                     self._result_cache.append(self._iter.next())
File "/usr/local/lib/python2.7/dist-packages/polymorphic/query.py" in iterator
  243.             real_results = self._get_real_instances(base_result_objects)
File "/usr/local/lib/python2.7/dist-packages/polymorphic/query.py" in _get_real_instances
  174.             qs = modelclass.base_objects.filter(pk__in=idlist) # use pk__in instead ####

Exception Type: AttributeError at /admin/filer/folder/1/list/
Exception Value: type object 'Clipboard' has no attribute 'base_objects'

[stefanfoulis]

Sorry for the late response @chrisfong . Did you find a solution? I've not encountered this error before and can't reproduce it.

What version of django and django_polymorphic are you using?

[jrutila]

I am having this same issue with django-filer 0.9.3 django-polymorphic 0.4.0

I do not have the reproduction steps yet, though.

[stefanfoulis]

I suspect his has something to do with django ContentType pks being mixed up. Maybe after loading a dbdump?

[jrutila]

Definitely. I had wrong polymorphic_ctype_id in filer_file table. I did do some database dumping and restoring and must have screwed it there. Everything works now that I changed the polymorphic_ctype_id.

[eressler]

I just ran into this same issue after trying to load data from a dumpdata output. Doing a dump data using natural keys will also prevent this issue from occurring.

./manage.py dumpdata filer > filer.json --natural --indent 4

[CalebMuhia]

Hello Guys,

I have the same problem with a django shop app, after doing the a restore, how exactly do i fix this in the database, how to change the polymorphic_ctype_id,

Thanks guys

[outbrito]

It appears that setting the "polymorphic_ctype_id" to the ContentType relative to filer.file works.

[andilabs]

For me following the hint of eressler about using --natural was the way to go. THANKS!

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This will now be closed due to inactivity, but feel free to reopen it.