无法同时覆盖 contrib.admin.AdminSite 和 django.contrib.auth.admin.UserAdmin
Unable to override both contrib.admin.AdminSite and django.contrib.auth.admin.UserAdmin simultaneously
使用 Django 3.1 和 Python 3.6，我试图覆盖默认的 AdminSite class 和 UserAdmin。我正在尝试结合文档两个不同部分的示例：
Overriding the default admin site
Extending the existing User model
最初我只有覆盖的 AdminSite class，但是当我也尝试覆盖 UserAdmin 时出现了问题。
这两个都是独立工作的。我可以覆盖 AdminSite 并获得自定义 header，或者 UserAdmin 并获得内联显示。
出于某种原因，我 运行 进入导入错误：ImportError: Module "core.admin" does not define a "CoreCustomAdmin" attribute/class。它看起来像是一种循环依赖，但这只是一个猜测，因为我无法弄清楚 where/how 它正在发生。
堆栈跟踪：
Exception in thread django-main-thread:
Traceback (most recent call last):
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 20, in import_string
return getattr(module, class_name)
AttributeError: module 'core.admin' has no attribute 'CoreCustomAdmin'
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 44, in autodiscover_modules
if register_to:
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/functional.py", line 240, in inner
self._setup()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/sites.py", line 540, in _setup
AdminSiteClass = import_string(apps.get_app_config('admin').default_site)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 17, in import_string
module = import_module(module_path)
File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/home/infernous/project_name/src/core/admin.py", line 2, in <module>
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/auth/admin.py", line 26, in <module>
class GroupAdmin(admin.ModelAdmin):
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/decorators.py", line 21, in _model_admin_wrapper
if not isinstance(admin_site, AdminSite):
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/functional.py", line 240, in inner
self._setup()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/sites.py", line 540, in _setup
AdminSiteClass = import_string(apps.get_app_config('admin').default_site)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 24, in import_string
) from err
ImportError: Module "core.admin" does not define a "CoreCustomAdmin" attribute/class
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 20, in import_string
return getattr(module, class_name)
AttributeError: module 'core.admin' has no attribute 'CoreCustomAdmin'
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/usr/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 53, in wrapper
fn(*args, **kwargs)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 110, in inner_run
autoreload.raise_last_exception()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 76, in raise_last_exception
raise _exception[1]
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 357, in execute
autoreload.check_errors(django.setup)()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 53, in wrapper
fn(*args, **kwargs)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/apps/registry.py", line 122, in populate
app_config.ready()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/apps.py", line 24, in ready
self.module.autodiscover()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/__init__.py", line 24, in autodiscover
autodiscover_modules('admin', register_to=site)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 53, in autodiscover_modules
if register_to:
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/functional.py", line 240, in inner
self._setup()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/sites.py", line 540, in _setup
AdminSiteClass = import_string(apps.get_app_config('admin').default_site)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 17, in import_string
module = import_module(module_path)
File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/home/infernous/project_name/src/core/admin.py", line 2, in <module>
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/auth/admin.py", line 26, in <module>
class GroupAdmin(admin.ModelAdmin):
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/decorators.py", line 21, in _model_admin_wrapper
if not isinstance(admin_site, AdminSite):
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/functional.py", line 240, in inner
self._setup()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/sites.py", line 540, in _setup
AdminSiteClass = import_string(apps.get_app_config('admin').default_site)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 24, in import_string
) from err
ImportError: Module "core.admin" does not define a "CoreCustomAdmin" attribute/class
事实上，我没有加载默认管理员（无论如何都会出错）。
settings.py:
INSTALLED_APPS = [
...
'core.apps.CoreCustomAdmin',
...
# 'django.contrib.admin', # Commented out
问题文件？更改导入的顺序没有任何作用，这是预期的，因为它 是 Python:
core/admin.py:
from django.contrib import admin
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
from django.contrib.auth.models import User, Group
from allauth.account.models import UserData
class CoreCustomAdmin(admin.AdminSite):
site_header = 'Custom Header'
class UserDataInline(admin.StackedInline):
model = UserData
can_delete = False
class CustomUserAdmin(BaseUserAdmin):
inlines = (UserDataInline,)
admin.site = CoreCustomAdmin()
admin.site.register(User, CustomUserAdmin)
admin.site.register(Group)
我唯一导入的地方core.admin。我已经尝试将 admin.site = CoreCustomAdmin() 从 core/admin.py 更改为 customadmin = CoreCustomAdmin() 之类的东西并使用它，但它自然没有任何作用。
urls.py
from django.urls import path, include
from core.admin import admin
app_name = 'project_name'
urlpatterns = [
...
path('admin/', admin.site.urls),
]
core/apps.py
from django.apps import AppConfig
from django.contrib.admin.apps import AdminConfig
class CoreConfig(AppConfig):
name = 'core'
class CoreCustomAdmin(AdminConfig):
default_site = 'core.admin.CoreCustomAdmin'
谢谢！
我在 3 周后回到问题上并花了 5 分钟解决了这个问题后不小心修复了它。我将 settings.py 中的行从
更改为
'core.apps.CoreCustomAdmin',
到
'base.apps.AdminConfig',
它是 base.apps 而不是 core.apps 的原因是因为我根据对问题的评论将应用重命名为“base”，以试图解决问题。如果我不这样做，它只会将 CoreCustomAdmin 更改为 AdminConfig。
据我所知，达到了预期的效果。它仍然在管理站点上有自定义 header，在用户模型编辑页面上也有内联。
使用 Django 3.1 和 Python 3.6，我试图覆盖默认的 AdminSite class 和 UserAdmin。我正在尝试结合文档两个不同部分的示例：
Overriding the default admin site
Extending the existing User model
最初我只有覆盖的 AdminSite class，但是当我也尝试覆盖 UserAdmin 时出现了问题。
这两个都是独立工作的。我可以覆盖 AdminSite 并获得自定义 header，或者 UserAdmin 并获得内联显示。
出于某种原因，我 运行 进入导入错误：ImportError: Module "core.admin" does not define a "CoreCustomAdmin" attribute/class。它看起来像是一种循环依赖，但这只是一个猜测，因为我无法弄清楚 where/how 它正在发生。
堆栈跟踪：
Exception in thread django-main-thread:
Traceback (most recent call last):
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 20, in import_string
return getattr(module, class_name)
AttributeError: module 'core.admin' has no attribute 'CoreCustomAdmin'
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 44, in autodiscover_modules
if register_to:
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/functional.py", line 240, in inner
self._setup()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/sites.py", line 540, in _setup
AdminSiteClass = import_string(apps.get_app_config('admin').default_site)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 17, in import_string
module = import_module(module_path)
File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/home/infernous/project_name/src/core/admin.py", line 2, in <module>
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/auth/admin.py", line 26, in <module>
class GroupAdmin(admin.ModelAdmin):
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/decorators.py", line 21, in _model_admin_wrapper
if not isinstance(admin_site, AdminSite):
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/functional.py", line 240, in inner
self._setup()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/sites.py", line 540, in _setup
AdminSiteClass = import_string(apps.get_app_config('admin').default_site)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 24, in import_string
) from err
ImportError: Module "core.admin" does not define a "CoreCustomAdmin" attribute/class
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 20, in import_string
return getattr(module, class_name)
AttributeError: module 'core.admin' has no attribute 'CoreCustomAdmin'
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/usr/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 53, in wrapper
fn(*args, **kwargs)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 110, in inner_run
autoreload.raise_last_exception()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 76, in raise_last_exception
raise _exception[1]
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 357, in execute
autoreload.check_errors(django.setup)()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/autoreload.py", line 53, in wrapper
fn(*args, **kwargs)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/apps/registry.py", line 122, in populate
app_config.ready()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/apps.py", line 24, in ready
self.module.autodiscover()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/__init__.py", line 24, in autodiscover
autodiscover_modules('admin', register_to=site)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 53, in autodiscover_modules
if register_to:
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/functional.py", line 240, in inner
self._setup()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/sites.py", line 540, in _setup
AdminSiteClass = import_string(apps.get_app_config('admin').default_site)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 17, in import_string
module = import_module(module_path)
File "/usr/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/home/infernous/project_name/src/core/admin.py", line 2, in <module>
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/auth/admin.py", line 26, in <module>
class GroupAdmin(admin.ModelAdmin):
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/decorators.py", line 21, in _model_admin_wrapper
if not isinstance(admin_site, AdminSite):
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/functional.py", line 240, in inner
self._setup()
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/contrib/admin/sites.py", line 540, in _setup
AdminSiteClass = import_string(apps.get_app_config('admin').default_site)
File "/home/infernous/project_name/.venv/lib/python3.6/site-packages/django/utils/module_loading.py", line 24, in import_string
) from err
ImportError: Module "core.admin" does not define a "CoreCustomAdmin" attribute/class
事实上，我没有加载默认管理员（无论如何都会出错）。
settings.py:
INSTALLED_APPS = [
...
'core.apps.CoreCustomAdmin',
...
# 'django.contrib.admin', # Commented out
问题文件？更改导入的顺序没有任何作用，这是预期的，因为它 是 Python:
core/admin.py:
from django.contrib import admin
from django.contrib.auth.admin import UserAdmin as BaseUserAdmin
from django.contrib.auth.models import User, Group
from allauth.account.models import UserData
class CoreCustomAdmin(admin.AdminSite):
site_header = 'Custom Header'
class UserDataInline(admin.StackedInline):
model = UserData
can_delete = False
class CustomUserAdmin(BaseUserAdmin):
inlines = (UserDataInline,)
admin.site = CoreCustomAdmin()
admin.site.register(User, CustomUserAdmin)
admin.site.register(Group)
我唯一导入的地方core.admin。我已经尝试将 admin.site = CoreCustomAdmin() 从 core/admin.py 更改为 customadmin = CoreCustomAdmin() 之类的东西并使用它，但它自然没有任何作用。
urls.py
from django.urls import path, include
from core.admin import admin
app_name = 'project_name'
urlpatterns = [
...
path('admin/', admin.site.urls),
]
core/apps.py
from django.apps import AppConfig
from django.contrib.admin.apps import AdminConfig
class CoreConfig(AppConfig):
name = 'core'
class CoreCustomAdmin(AdminConfig):
default_site = 'core.admin.CoreCustomAdmin'
谢谢！
我在 3 周后回到问题上并花了 5 分钟解决了这个问题后不小心修复了它。我将 settings.py 中的行从
更改为'core.apps.CoreCustomAdmin',
到
'base.apps.AdminConfig',
它是 base.apps 而不是 core.apps 的原因是因为我根据对问题的评论将应用重命名为“base”，以试图解决问题。如果我不这样做，它只会将 CoreCustomAdmin 更改为 AdminConfig。
据我所知，达到了预期的效果。它仍然在管理站点上有自定义 header，在用户模型编辑页面上也有内联。