"auth_user.password may not be NULL" IntegrityError when saving users in the admin

[zett.adam@…]

I'm receiving an IntegrityError when trying to save users in the admin. I'm using sqlite3 database backend.

Steps to reproduce:

1. Log in to admin.
2. Go to Users and select a user to edit
3. (Edit some fields,) and submit the form.

Below is a traceback:

Environment:

Request Method: POST
Request URL: http://example.com/admin/auth/user/1/

Django Version: 1.5
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',
 'django.contrib.admin',
 'django.contrib.admindocs')
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 "/data/python/django/django/core/handlers/base.py" in get_response
  116.                         response = callback(request, *callback_args, **callback_kwargs)
File "/data/python/django/django/contrib/admin/options.py" in wrapper
  367.                 return self.admin_site.admin_view(view)(*args, **kwargs)
File "/data/python/django/django/utils/decorators.py" in _wrapped_view
  91.                     response = view_func(request, *args, **kwargs)
File "/data/python/django/django/views/decorators/cache.py" in _wrapped_view_func
  89.         response = view_func(request, *args, **kwargs)
File "/data/python/django/django/contrib/admin/sites.py" in inner
  202.             return view(request, *args, **kwargs)
File "/data/python/django/django/utils/decorators.py" in _wrapper
  25.             return bound_func(*args, **kwargs)
File "/data/python/django/django/utils/decorators.py" in _wrapped_view
  91.                     response = view_func(request, *args, **kwargs)
File "/data/python/django/django/utils/decorators.py" in bound_func
  21.                 return func(self, *args2, **kwargs2)
File "/data/python/django/django/db/transaction.py" in inner
  208.                 return func(*args, **kwargs)
File "/data/python/django/django/contrib/admin/options.py" in change_view
  1054.                 self.save_model(request, new_object, form, True)
File "/data/python/django/django/contrib/admin/options.py" in save_model
  710.         obj.save()
File "/data/python/django/django/db/models/base.py" in save
  532.                        force_update=force_update, update_fields=update_fields)
File "/data/python/django/django/db/models/base.py" in save_base
  603.                             rows = manager.using(using).filter(pk=pk_val)._update(values)
File "/data/python/django/django/db/models/query.py" in _update
  580.         return query.get_compiler(self.db).execute_sql(None)
File "/data/python/django/django/db/models/sql/compiler.py" in execute_sql
  997.         cursor = super(SQLUpdateCompiler, self).execute_sql(result_type)
File "/data/python/django/django/db/models/sql/compiler.py" in execute_sql
  825.         cursor.execute(sql, params)
File "/data/python/django/django/db/backends/util.py" in execute
  43.             return self.cursor.execute(sql, params)
File "/data/python/django/django/db/backends/sqlite3/base.py" in execute
  360.             six.reraise(utils.IntegrityError, utils.IntegrityError(*tuple(e.args)), sys.exc_info()[2])
File "/data/python/django/django/db/backends/sqlite3/base.py" in execute
  358.             return Database.Cursor.execute(self, query, params)

Exception Type: IntegrityError at /admin/auth/user/1/
Exception Value: auth_user.password may not be NULL

[Preston Holmes]

duplicate of #19133