用户表单的 Django 错误：属性错误：'tuple'对象没有属性'_meta'

Question

我按照课程的要求使用Django注册用户，他编写了下面的代码，就像我所做的一样:

class CustomUserForm(UserChangeForm):
username = forms.CharField(
widget=forms.TextInput(attrs={'class': 'form-control my-2', 'placeholder': 'Enter Username'}))
email = forms.CharField(
widget=forms.TextInput(attrs={'class': 'form-control my-2', 'placeholder': 'Enter The Email'}))
password1 = forms.CharField(
widget=forms.PasswordInput(attrs={'class': 'form-control my-2', 'placeholder': 'Enter The Password'}))
password2 = forms.CharField(
widget=forms.PasswordInput(attrs={'class': 'form-control my-2', 'placeholder': 'Confirm Password'}))
class Meta:
model = User,
fields = ['username', 'email', 'password1', 'password2']

运行服务器时显示如下错误:

PS E:osamaStartup> py manage.py runserver
Watching for file changes with StatReloader
Performing system checks...
Exception in thread django-main-thread:
Traceback (most recent call last):
File "E:deeplibthreading.py", line 973, in _bootstrap_inner
self.run()
File "E:deeplibthreading.py", line 910, in run
self._target(*self._args, **self._kwargs)
File "E:deeplibsite-packagesdjangoutilsautoreload.py", line 64, in wrapper
fn(*args, **kwargs)
File "E:deeplibsite-packagesdjangocoremanagementcommandsrunserver.py", line 134, in inner_run
self.check(display_num_errors=True)
File "E:deeplibsite-packagesdjangocoremanagementbase.py", line 487, in check
all_issues = checks.run_checks(
File "E:deeplibsite-packagesdjangocorechecksregistry.py", line 88, in run_checks
new_errors = check(app_configs=app_configs, databases=databases)
File "E:deeplibsite-packagesdjangocorechecksurls.py", line 14, in check_url_config
return check_resolver(resolver)
File "E:deeplibsite-packagesdjangocorechecksurls.py", line 24, in check_resolver
return check_method()
File "E:deeplibsite-packagesdjangourlsresolvers.py", line 480, in check
for pattern in self.url_patterns:
File "E:deeplibsite-packagesdjangoutilsfunctional.py", line 49, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "E:deeplibsite-packagesdjangourlsresolvers.py", line 696, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "E:deeplibsite-packagesdjangoutilsfunctional.py", line 49, in __get__
res = instance.__dict__[self.name] = self.func(instance)
File "E:deeplibsite-packagesdjangourlsresolvers.py", line 689, in urlconf_module
return import_module(self.urlconf_name)
File "E:deeplibimportlib__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 850, in exec_module
File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
File "E:osamaStartuposamaStartupurls.py", line 9, in <module>
path('', include('store.urls'))
File "E:deeplibsite-packagesdjangourlsconf.py", line 38, in include
urlconf_module = import_module(urlconf_module)
File "E:deeplibimportlib__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
File "E:deeplibsite-packagesdjangoformsmodels.py", line 181, in fields_for_model
opts = model._meta
AttributeError: 'tuple' object has no attribute '_meta'

Answer 1

找到问题了

class CustomUserForm(UserChangeForm):
username = forms.CharField(
widget=forms.TextInput(attrs={'class': 'form-control my-2', 'placeholder': 'Enter Username'}))
email = forms.CharField(
widget=forms.TextInput(attrs={'class': 'form-control my-2', 'placeholder': 'Enter The Email'}))
password1 = forms.CharField(
widget=forms.PasswordInput(attrs={'class': 'form-control my-2', 'placeholder': 'Enter The Password'}))
password2 = forms.CharField(
widget=forms.PasswordInput(attrs={'class': 'form-control my-2', 'placeholder': 'Confirm Password'}))
class Meta:
model = User,  # Remove this comma because its treating it as a tuple
fields = ['username', 'email', 'password1', 'password2']