我使用django 1.11，管理员可以配置密码是否应该很复杂，因此我使用constace来启用此配置。
settings.py
AUTH_PASSWORD_VALIDATORS = [
{
'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
'OPTIONS': {
'min_length': 8,
}
},
{
'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
},
{'NAME': 'apps.core.password_validators.NumberValidator', },
# {'NAME': '.apps.core.password_validators.UppercaseValidator', },
# {'NAME': '.apps.core.password_validators.LowercaseValidator', },
# {'NAME': '.apps.core.password_validators.SymbolValidator', }
]
CONSTANCE_CONFIG = {
'PASSWORD_LIFETIME': (365*25, _('The time in Days how long a Password is valid'), int),
'PASSWORD_COMPLEXITY': (True, _('When set to true the Password must contain symbols, numbers, and upper/lowercase letters.')),
'SESSION_COOKIE_AGE': (14*24*60, _('The time in minutes how long a session is valid'), int),
}
password_validation.py： 从constance导入配置
class NumberValidator(object):
def validate(self, password, user=None):
is_complex = bool(config.PASSWORD_COMPLEXITY)
if is_complex:
if not re.findall('\d', password):
raise ValidationError(
_("The password must contain at least 1 digit, 0-9."),
code='password_no_number',
)
def get_help_text(self):
if config.PASSWORD_COMPLEXITY:
return _(
"Your password must contain at least 1 digit, 0-9."
)
else:
return ''
通过管理界面创建新用户时，我得到以下信息：
当前事务中止，命令被忽略，直到事务块结束
当我删除config.PASSWORD_COMPLEXITY部分时，代码起作用。
有人知道为什么使用常数会导致这种类型的错误吗？
完整追溯：
Request Method: POST
Request URL: http://localhost:8001/myappuseradmin/core/user/add/
Django Version: 1.11.13
Python Version: 2.7.9
Installed Applications:
('my_app.apps.core.apps.CoreConfig',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.postgres',
'django_extensions',
'djangojames',
'django_filters',
'rest_framework',
'rosetta',
'stronghold',
'channels',
'django_celery_results',
'health_check',
'health_check.db',
'health_check.cache',
'health_check.storage',
'health_check.contrib.celery',
'constance',
'my_app.apps.bokeh_server',
'my_app.apps.events',
'my_app.apps.analysis',
'my_app.apps.timeseries',
'my_app.apps.cases',
'my_app.apps.pec_controller',
'my_app.apps.system',
'my_app.apps.measurements',
'my_app.apps.landing_page',
'my_app.apps.opc_da_client',
'my_app.apps.opc_ae_client',
'my_app.apps.importexport')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.locale.LocaleMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
'stronghold.middleware.LoginRequiredMiddleware',
'my_app.apps.core.middleware.security_request_logging_middleware',
'my_app.apps.core.middleware.password_expired_middleware',
'my_app.apps.core.middleware.session_expiry_middleware')
Traceback:
File "/my_app-env/lib/python2.7/site-packages/django/core/handlers/exception.py" in inner
41. response = get_response(request)
File "/my_app-env/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
187. response = self.process_exception_by_middleware(e, request)
File "/my_app-env/lib/python2.7/site-packages/channels/handler.py" in process_exception_by_middleware
243. return super(AsgiHandler, self).process_exception_by_middleware(exception, request)
File "/my_app-env/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
185. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/my_app-env/lib/python2.7/site-packages/django/contrib/admin/options.py" in wrapper
551. return self.admin_site.admin_view(view)(*args, **kwargs)
File "/my_app-env/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapped_view
149. response = view_func(request, *args, **kwargs)
File "/my_app-env/lib/python2.7/site-packages/django/views/decorators/cache.py" in _wrapped_view_func
57. response = view_func(request, *args, **kwargs)
File "/my_app-env/lib/python2.7/site-packages/django/contrib/admin/sites.py" in inner
224. return view(request, *args, **kwargs)
File "/my_app-env/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapper
67. return bound_func(*args, **kwargs)
File "/my_app-env/lib/python2.7/site-packages/django/views/decorators/debug.py" in sensitive_post_parameters_wrapper
76. return view(request, *args, **kwargs)
File "/my_app-env/lib/python2.7/site-packages/django/utils/decorators.py" in bound_func
63. return func.__get__(self, type(self))(*args2, **kwargs2)
File "/my_app-env/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapper
67. return bound_func(*args, **kwargs)
File "/my_app-env/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapped_view
149. response = view_func(request, *args, **kwargs)
File "/my_app-env/lib/python2.7/site-packages/django/utils/decorators.py" in bound_func
63. return func.__get__(self, type(self))(*args2, **kwargs2)
File "/my_app-env/lib/python2.7/site-packages/django/contrib/auth/admin.py" in add_view
103. return self._add_view(request, form_url, extra_context)
File "/my_app-env/lib/python2.7/site-packages/django/contrib/auth/admin.py" in _add_view
131. extra_context)
File "/my_app-env/lib/python2.7/site-packages/django/contrib/admin/options.py" in add_view
1508. return self.changeform_view(request, None, form_url, extra_context)
File "/my_app-env/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapper
67. return bound_func(*args, **kwargs)
File "/my_app-env/lib/python2.7/site-packages/django/utils/decorators.py" in _wrapped_view
149. response = view_func(request, *args, **kwargs)
File "/my_app-env/lib/python2.7/site-packages/django/utils/decorators.py" in bound_func
63. return func.__get__(self, type(self))(*args2, **kwargs2)
File "/my_app-env/lib/python2.7/site-packages/django/contrib/admin/options.py" in changeform_view
1408. return self._changeform_view(request, object_id, form_url, extra_context)
File "/my_app-env/lib/python2.7/site-packages/django/contrib/admin/options.py" in _changeform_view
1440. if form.is_valid():
File "/my_app-env/lib/python2.7/site-packages/django/forms/forms.py" in is_valid
183. return self.is_bound and not self.errors
File "/my_app-env/lib/python2.7/site-packages/django/forms/forms.py" in errors
175. self.full_clean()
File "/my_app-env/lib/python2.7/site-packages/django/forms/forms.py" in full_clean
384. self._clean_fields()
File "/my_app-env/lib/python2.7/site-packages/django/forms/forms.py" in _clean_fields
405. value = getattr(self, 'clean_%s' % name)()
File "/my_app-env/lib/python2.7/site-packages/django/contrib/auth/forms.py" in clean_password2
106. password_validation.validate_password(self.cleaned_data.get('password2'), self.instance)
File "/my_app-env/lib/python2.7/site-packages/django/contrib/auth/password_validation.py" in validate_password
52. validator.validate(password, user)
File "/my_app/src/my_app/apps/core/password_validators.py" in validate
21. is_complex = config.PASSWORD_COMPLEXITY
File "/my_app-env/lib/python2.7/site-packages/django/utils/functional.py" in inner
239. return func(self._wrapped, *args)
File "/my_app-env/lib/python2.7/site-packages/constance/base.py" in __getattr__
22. setattr(self, key, default)
File "/my_app-env/lib/python2.7/site-packages/constance/base.py" in __setattr__
29. self._backend.set(key, value)
File "/my_app-env/lib/python2.7/site-packages/constance/backends/database/__init__.py" in set
84. old_value = self.get(key)
File "/my_app-env/lib/python2.7/site-packages/constance/backends/database/__init__.py" in get
75. value = self._model._default_manager.get(key=key).value
File "/my_app-env/lib/python2.7/site-packages/django/db/models/manager.py" in manager_method
85. return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/my_app-env/lib/python2.7/site-packages/django/db/models/query.py" in get
374. num = len(clone)
File "/my_app-env/lib/python2.7/site-packages/django/db/models/query.py" in __len__
232. self._fetch_all()
File "/my_app-env/lib/python2.7/site-packages/django/db/models/query.py" in _fetch_all
1118. self._result_cache = list(self._iterable_class(self))
File "/my_app-env/lib/python2.7/site-packages/django/db/models/query.py" in __iter__
53. results = compiler.execute_sql(chunked_fetch=self.chunked_fetch)
File "/my_app-env/lib/python2.7/site-packages/django/db/models/sql/compiler.py" in execute_sql
899. raise original_exception
Exception Type: InternalError at /myappuseradmin/core/user/add/
Exception Value: current transaction is aborted, commands ignored until end of transaction block
答案 0 :(得分：0)
解决问题的方法如下： 我错过了将'constance.backends.database'应用添加到已安装的django应用设置中的功能。
错误很难发现。关键是检查postgres日志，该日志显示不存在常数表。