Admin Transaction Management Error

[holdenweb]

When using admin from the trunk [r8346] on Ubuntu I am getting occasional tracebacks like the following. I *appears* only to happen when one of the foreign key fields is changed, or at least I haven't been able to trigger the problem without changing one of them. I am only selecting values using the drop-downs populated from the related models.

Environment:

• Request Method: POST
• Request URL: ​http://test.holdenweb.com/admin/accounts/userprofile/14/
• Django Version: 1.0-alpha_2-SVN-8346
• Python Version: 2.4.3

Installed Applications:

['django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.admin',
 'pages',
 'grp',
 'contact',
 'registration',
 'accounts']

Installed Middleware:

('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.middleware.doc.XViewMiddleware')

Traceback:

File "/home/holdenwe/django-trunk/django/core/handlers/base.py" in get_response
  86.                 response = callback(request, *callback_args, **callback_kwargs)
File "/home/holdenwe/django-trunk/django/contrib/admin/sites.py" in root
  172.                 return self.model_page(request, *url.split('/', 2))
File "/home/holdenwe/django-trunk/django/views/decorators/cache.py" in _wrapped_view_func
  44.         response = view_func(request, *args, **kwargs)
File "/home/holdenwe/django-trunk/django/contrib/admin/sites.py" in model_page
  189.         return admin_obj(request, rest_of_url)
File "/home/holdenwe/django-trunk/django/contrib/admin/options.py" in __call__
  275.             return self.change_view(request, unquote(url))
File "/home/holdenwe/django-trunk/django/db/transaction.py" in _commit_on_success
  251.             leave_transaction_management()
File "/home/holdenwe/django-trunk/django/db/transaction.py" in leave_transaction_management
  75.         raise TransactionManagementError("Transaction managed block ended with pending COMMIT/ROLLBACK")

Exception Type: TransactionManagementError at /admin/accounts/userprofile/14/
Exception Value: Transaction managed block ended with pending COMMIT/ROLLBACK

[holdenweb]

accounts/admin.py

[holdenweb]

accounts/models.py

[Malcolm Tredinnick]

(Fixed description to stop my eyes watering.)

Putting this on the 1.0 track because if it can ever be reliably repeated we should definitely fix it. That first part is going to be the trick, of course. Finding the right 'component' is a little tough, since we don't quite know where the problem lies. Making it admin for now, since that's the visible symptom at least.