表单错误 - __init __（）得到了一个意想不到的关键字参数'前缀'

Question

我有2个表单中的一个，我添加了前缀以将它分开。但我得到错误：__init __（）得到了一个意想不到的关键字参数'前缀'

我阅读有关前缀和其他问题的堆栈有关的文档，但这不帮助我。

我view.py：

@user_passes_test(lambda u: u.is_staff, login_url='/account/login/') 
def client_create(request): 
    dict = {} 
    dict['title'] = 'New client' 

    if request.method == 'POST': 
     form_user = ClientUserCreateForm(request.POST, prefix="test1") 
     form_client = ClientCreateForm(request.POST, prefix="test2") 
     return HttpResponse(request.POST['first_name']) 
     # if form_user.is_valid() and form_client.is_valid(): 
     #  print(request.POST) 
    else: 
     dict['form_user'] = ClientUserCreateForm(prefix="test1") 
     dict['form_client'] = ClientCreateForm(prefix="test2") 
     return render(request, 'panel/client/create.html', dict) 

我有两种形式，他们有初始化，当我从表单中删除它，然后前缀工作的正确。

我forms.py

class ClientUserCreateForm(forms.ModelForm): 
    class Meta: 
     model = User 
     fields = ('first_name', 'last_name', 'email') 

    def __init__(self): 
     super(ClientUserCreateForm, self).__init__() 
     self.fields['first_name'].widget.attrs.update({ 
      'type': 'text', 
      'class': 'form-control', 
      'id': 'input-text', 
     }) 
     self.fields['last_name'].widget.attrs.update({ 
      'type': 'text', 
      'class': 'form-control', 
      'id': 'input-text', 
     }) 
     self.fields['email'].widget.attrs.update({ 
      'type': 'text', 
      'class': 'form-control', 
      'id': 'input-text', 
     }) 


class ClientCreateForm(forms.ModelForm): 
    country = forms.CharField(max_length=2, widget=forms.Select(
     choices=CountriesShortcut.objects.all().values_list('code', 'name').order_by('id') 
    )) 
    forwarding_country = forms.CharField(max_length=2, widget=forms.Select(
     choices=CountriesShortcut.objects.all().values_list('code', 'name').order_by('id') 
    )) 

    class Meta: 
     model = Client 
     fields = ('name', 'vat', 'address', 'zip_code', 'city', 'country', 'forwarding_address', 
        'forwarding_zip_code', 'forwarding_city', 'forwarding_country', 'phone', 
        'mailing_email', 'regon') 

    def __init__(self): 
     super(ClientCreateForm, self).__init__() 
     self.fields['name'].widget.attrs.update({ 
      'type': 'text', 
      'class': 'form-control', 
      'id': 'input-text', 
     }) 
     self.fields['vat'].widget.attrs.update({ 
      'type': 'text', 
      'class': 'form-control', 
      'id': 'input-text', 
     }) 
     (....) 
     self.fields['regon'].widget.attrs.update({ 
      'type': 'text', 
      'class': 'form-control', 
      'id': 'input-text', 
     }) 

回溯：

Environment: 

Request Method: GET 
Request URL: http://127.0.0.1:8000/panel/client/create/ 

Django Version: 1.8.8 
Python Version: 3.5.1 
Installed Applications: 
('django.contrib.admin', 
'django.contrib.auth', 
'django.contrib.contenttypes', 
'django.contrib.sessions', 
'django.contrib.messages', 
'django.contrib.staticfiles', 
'core', 
'client', 
'registration', 
'avatar', 
'filer', 
'mptt', 
'easy_thumbnails', 
'reversion', 
'guardian') 
Installed Middleware: 
('django.contrib.sessions.middleware.SessionMiddleware', 
'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', 
'django.middleware.security.SecurityMiddleware') 


Traceback: 
File "C:\Users\loc\dJangoEnvironment\lib\site-packages\django\core\handlers\base.py" in get_response 
    132.      response = wrapped_callback(request, *callback_args, **callback_kwargs) 
File "C:\Users\loc\dJangoEnvironment\lib\site-packages\django\contrib\auth\decorators.py" in _wrapped_view 
    22.     return view_func(request, *args, **kwargs) 
File "C:\Users\loc\PycharmProjects\CRM\core\views.py" in client_create 
    72.   dict['form_user'] = ClientUserCreateForm(prefix="test1") 

Exception Type: TypeError at /panel/client/create/ 
Exception Value: __init__() got an unexpected keyword argument 'prefix' 

回溯2 - 更新后__init__：

Environment: 

Request Method: GET 
Request URL: http://127.0.0.1:8000/panel/client/create/ 

Django Version: 1.8.8 
Python Version: 3.5.1 
Installed Applications: 
('django.contrib.admin', 
'django.contrib.auth', 
'django.contrib.contenttypes', 
'django.contrib.sessions', 
'django.contrib.messages', 
'django.contrib.staticfiles', 
'core', 
'client', 
'registration', 
'avatar', 
'filer', 
'mptt', 
'easy_thumbnails', 
'reversion', 
'guardian') 
Installed Middleware: 
('django.contrib.sessions.middleware.SessionMiddleware', 
'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', 
'django.middleware.security.SecurityMiddleware') 


Traceback: 
File "C:\Users\loc\dJangoEnvironment\lib\site-packages\django\core\handlers\base.py" in get_response 
    132.      response = wrapped_callback(request, *callback_args, **callback_kwargs) 
File "C:\Users\loc\dJangoEnvironment\lib\site-packages\django\contrib\auth\decorators.py" in _wrapped_view 
    22.     return view_func(request, *args, **kwargs) 
File "C:\Users\loc\PycharmProjects\CRM\core\views.py" in client_create 
    73.   dict['form_client'] = ClientCreateForm(prefix="test2") 
File "C:\Users\loc\PycharmProjects\CRM\core\forms.py" in __init__ 
    75.   super(ClientUserCreateForm, self).__init__(*args, **kwargs) 

Exception Type: TypeError at /panel/client/create/ 
Exception Value: super(type, obj): obj must be an instance or subtype of type 

Answer 1

您正在重写表单的__init__方法，并且您不接受新方法中的任何参数。这是最容易接受并通过所有参数：

ClientUserCreateForm(forms.ModelForm): 
    def __init__(self, *args, **kwargs): 
     super(ClientUserCreateForm, self).__init__(*args, **kwargs)