Django表单__init__重载使得重写表单保存方法不起作用？

Question

我有一个在对象详细信息页面上出现的django表单。我想用一个隐藏的表单字段预填充它出现的对象详细信息页面的slug。我在同一个表单上也有一个重写的保存方法，这样我就可以提供一些处理并将其保存到正确的模型中。但是，当我在表单上引入重写的 init 以预填充字段（并在表单调用中提供带有slug的 init ）时，重写的保存将停止工作。这是为什么？

我的代码：

urls.py

url(r'^my_object_detail/(?P<slug>[A-Za-z0-9-]{1,80})/$', my_object_detail, name = 'my_object_detail'),

views.py

def my_object_detail(request, slug, template_name='my_plan_detail_page.html', **kwargs):

    my_object = get_object_or_404(MyObjects, slug=slug)
    form = ContactForm(request.POST or None, slug=slug)

    if request.method =='POST':
        if form.is_valid():
            form.save()

forms.py

class ContactForm(forms.Form):

    first_name = forms.CharField(label='', max_length=30, required=False, widget=forms.TextInput(attrs={'class':'my-class-1','placeholder':'First Name'}))
    last_name = forms.CharField(label='', max_length=30, required=False, widget=forms.TextInput(attrs={'class':'my-class-1','placeholder':'Last Name'}))
    email = forms.EmailField(label='', required=False, widget=forms.TextInput(attrs={'class':'my-class-2','placeholder':'Email Address'}))
    interested_in = forms.CharField(max_length=50, required=False, widget=forms.HiddenInput())

    def __init__(self, request=None, slug=None, *args, **kwargs):
        self.request = request
        self.slug = slug
        super(ContactForm, self).__init__(*args, **kwargs)
        self.fields['interested_in'].widget.attrs['value'] = slug

    def save(self):
        data = self.cleaned_data
        first_name = data['first_name']
        last_name = data['last_name']
        email = data['email']
        interested_in = data['interested_in']
        if settings.CURRENT_HOST == 'host-1':
            lead_source = "host-1"
        else:
            lead_source = 'host-2'
        new_contact = MyContact(first_name=first_name, last_name=last_name, email=email, interested_in=interested_in, lead_source=lead_source)
        new_contact.save()

可能是相关的 - 如果我删除重载的init，并在views.py中进行表单调用，如下所示，重写的保存方法可以正常工作：

form = ContactForm(request.POST or None)

感谢您提供的任何见解。

Answer 1

您已经更改了表单初始化的签名，因此它现在期望请求和slug作为前两个参数，但是您实际上在初始化时将表单数据作为第一个传递。

将其更改为：

def __init__(self, args, **kwargs):
    self.request = kwargs.pop('request', None)
    self.slug = kwargs.pop('slug', None)
    ...etc...