如何使用UserProfile模型修复IntegrityError（当用户从​​管理界面创建时）？

时间：2012-03-13 05:02:28

标签： django

EDIT1 ：我尝试使用sqlflush重置所有内容，但这没有帮助。

EDIT2 ：我可以创建用户并将OtherModel指定为NULL，然后稍后编辑用户以使othermodel成为实际引用。在用户创建期间指定引用时会发生此问题。

所以在我的应用程序中，它与postgres连接，我正在尝试扩展django提供的User模型，其中包含一个名为UserProfile的新模型。我希望每个用户都与我创建的另一个模型相关联。所以这是我的代码：

models.py 

.
.
.

class OtherModel(models.Model):
    # model info

class UserProfile(models.Model):
    user = models.OneToOneField(User)    
    othermodel = models.OneToOneField(OtherModel, null=True)

def create_user_profile(sender, instance, created, **kwargs):
    if created:
        profile, created = UserProfile.objects.get_or_create(user=instance)

post_save.connect(create_user_profile, sender=User)

当我从django管理界面创建用户时，出现以下错误：

IntegrityError at /admin/auth/user/add/
duplicate key value violates unique constraint "planamocal_userprofile_user_id_key"
DETAIL:  Key (user_id)=(23) already exists.

每次我尝试创建一个新用户时，user_id计数都会递增，这很奇怪，因为我的实际用户数保持不变。

这是回溯：

Environment:


Request Method: POST
Request URL: http://127.0.0.1:8000/admin/auth/user/add/

Django Version: 1.3.1
Python Version: 2.7.1
Installed Applications:
['django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'planamocal',
 'django.contrib.admin']
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 "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  111.                         response = callback(request, *callback_args, **callback_kwargs)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/contrib/admin/options.py" in wrapper
  307.                 return self.admin_site.admin_view(view)(*args, **kwargs)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapped_view
  93.                     response = view_func(request, *args, **kwargs)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/views/decorators/cache.py" in _wrapped_view_func
  79.         response = view_func(request, *args, **kwargs)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/contrib/admin/sites.py" in inner
  197.             return view(request, *args, **kwargs)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapper
  28.             return bound_func(*args, **kwargs)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapped_view
  93.                     response = view_func(request, *args, **kwargs)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/utils/decorators.py" in bound_func
  24.                 return func(self, *args2, **kwargs2)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/db/transaction.py" in inner
  217.                 res = func(*args, **kwargs)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/contrib/auth/admin.py" in add_view
  103.         return super(UserAdmin, self).add_view(request, form_url, extra_context)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapper
  28.             return bound_func(*args, **kwargs)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapped_view
  93.                     response = view_func(request, *args, **kwargs)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/utils/decorators.py" in bound_func
  24.                 return func(self, *args2, **kwargs2)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/db/transaction.py" in inner
  217.                 res = func(*args, **kwargs)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/contrib/admin/options.py" in add_view
  885.                     self.save_formset(request, form, formset, change=False)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/contrib/admin/options.py" in save_formset
  677.         formset.save()
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/forms/models.py" in save
  482.         return self.save_existing_objects(commit) + self.save_new_objects(commit)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/forms/models.py" in save_new_objects
  613.             self.new_objects.append(self.save_new(form, commit=commit))
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/forms/models.py" in save_new
  717.             obj.save()
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/db/models/base.py" in save
  460.         self.save_base(using=using, force_insert=force_insert, force_update=force_update)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/db/models/base.py" in save_base
  553.                     result = manager._insert(values, return_id=update_pk, using=using)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/db/models/manager.py" in _insert
  195.         return insert_query(self.model, values, **kwargs)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/db/models/query.py" in insert_query
  1436.     return query.get_compiler(using=using).execute_sql(return_id)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/db/models/sql/compiler.py" in execute_sql
  791.         cursor = super(SQLInsertCompiler, self).execute_sql(None)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/db/models/sql/compiler.py" in execute_sql
  735.         cursor.execute(sql, params)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/db/backends/util.py" in execute
  34.             return self.cursor.execute(sql, params)
File "/Users/AndyFang/Desktop/planamo/venv/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py" in execute
  44.             return self.cursor.execute(query, args)

Exception Type: IntegrityError at /admin/auth/user/add/
Exception Value: duplicate key value violates unique constraint "planamocal_userprofile_user_id_key"
DETAIL:  Key (user_id)=(23) already exists.

如何解决此错误？

1 个答案:

答案 0 :(得分：7)

出现此问题是因为您似乎正在尝试创建用户配置文件并在管理中同时添加其他模型。

因为其他模型是连接到用户创建的信号，所以不可能。

更改工作流程，以便您创建用户，保存用户，创建配置文件，保存配置文件并添加其他模型，保存配置文件（按此顺序）

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