Question

我正要问一个问题并在发布之前找到解决方案：）

问题：

我正在尝试为一个简单的应用设置django-cms，并且在尝试编辑前端页面时收到了TransactionManagementError。

django.db.transaction.TransactionManagementError
TransactionManagementError: This is forbidden when an 'atomic' block is active.

我目前正在使用sqlite，我需要添加'ATOMIC_REQUESTS': True因为我得到了这个：

TransactionManagementError: Your database backend doesn't behave properly when autocommit is off. Turn it on before using 'atomic'.

数据库设置

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
        'ATOMIC_REQUESTS': True
    }
}

我正在使用的版本

Django==1.6.5
django-cms==3.0.2

这是我得到的追溯：

django.db.transaction.TransactionManagementError
TransactionManagementError: This is forbidden when an 'atomic' block is active.

Traceback (most recent call last)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/contrib/staticfiles/handlers.py", line 67, in __call__
return self.application(environ, start_response)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/core/handlers/wsgi.py", line 206, in __call__
response = self.get_response(request)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/core/handlers/base.py", line 194, in get_response
response = self.handle_uncaught_exception(request, resolver, sys.exc_info())
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/core/handlers/base.py", line 229, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django_extensions/management/technical_response.py", line 5, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/core/handlers/base.py", line 112, in get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/db/transaction.py", line 371, in inner
return func(*args, **kwargs)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/cms/admin/settingsadmin.py", line 21, in wrapper
return self.admin_site.admin_view(view)(*args, **kwargs)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/utils/decorators.py", line 99, in _wrapped_view
response = view_func(request, *args, **kwargs)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/views/decorators/cache.py", line 52, in _wrapped_view_func
response = view_func(request, *args, **kwargs)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/contrib/admin/sites.py", line 198, in inner
return view(request, *args, **kwargs)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/utils/decorators.py", line 29, in _wrapper
return bound_func(*args, **kwargs)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/utils/decorators.py", line 99, in _wrapped_view
response = view_func(request, *args, **kwargs)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/utils/decorators.py", line 25, in bound_func
return func(self, *args2, **kwargs2)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/db/transaction.py", line 430, in inner
with self:
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/db/transaction.py", line 422, in __enter__
self.entering(self.using)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/db/transaction.py", line 483, in entering
enter_transaction_management(using=using)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/db/transaction.py", line 70, in enter_transaction_management
get_connection(using).enter_transaction_management(managed, forced)
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/db/backends/__init__.py", line 287, in enter_transaction_management
self.validate_no_atomic_block()
File "/Users/gableroux/.virtualenvs/adls-si/lib/python2.7/site-packages/django/db/backends/__init__.py", line 367, in validate_no_atomic_block
"This is forbidden when an 'atomic' block is active.")
TransactionManagementError: This is forbidden when an 'atomic' block is active.
The debugger caught an exception in your WSGI application. You can now look at the traceback which led to the error.

Answer 1

我只需要从django-cms==3.0.2更新到django-cms==3.0.3，问题就不复存在了。这可以帮助别人。

我不确定究竟是什么问题。我也得到了<class 'cms.models.titlemodels.Title'> has not been registered with django-reversion的版本，See this issue，升级到3.0.3似乎也解决了这个问题。

编辑django-cms页面时的TransactionManagementError

1 个答案: