Question

我有使用enum的主题下拉的ContactForm，主题是三个不同的字符串：我有一个问题。 2.帮助/支持请给我打个电话。

当用户发送消息时必须选择以上三种中的一种，这里是我的代码：

*的 forms.py *

来自django_enumfield import enum

class SubjectEnum(enum.Enum):
    subject_one = 'I have a question'
    subject_two = 'Help/Support'
    subject_three = 'Please give me a call'

class ContactForm(forms.ModelForm):
    name = forms.CharField(required=True)
    email = forms.EmailField(required=True)
    subject = forms.TypedChoiceField(choices=SubjectEnum.choices(), coerce=str) 
    message = forms.CharField(widget=forms.Textarea)




   def __init__(self, *args, **kwargs):
        self.helper = FormHelper()
        self.helper.add_input(Submit('submit', 'Submit'))
        super(ContactForm, self).__init__(*args, **kwargs)

像belwo那样的view.py文件：

class ContactFormView(FormView):
    form_class = ContactForm
    template_name = "contact/email_form.jade"
    success_url = '/email-sent/'

    def form_valid(self, form):
        message = "{name} / {email} said: ".format(
            name=form.cleaned_data.get('name'),
            email=form.cleaned_data.get('email'))
        message += "\n\n{0}".format(form.cleaned_data.get('message'))
        send_mail(
            subject=form.cleaned_data.get('-subject').strip(),
            message=message,
            from_email="enquiries@example.com",
            recipient_list=[settings.LIST_OF_EMAIL_RECIPIENTS],
        )
        return super(ContactFormView, self).form_valid(form)

联系表格：

- extends "base.jade"
- load crispy_forms_tags
    block meta_title
        | Contact Us
    block content
        .jumbotron
            h1 Contact Us
        .row
            .span6
                {% crispy form form.helper %}

我收到错误说，ValueError：ModelForm没有指定模型类。伙计们好吗？感谢

Answer 1

您应在模型表单中指定Meta类并设置使用的模型。请注意，您不需要指定与您的模型字段没有区别的表单字段。

class ContactForm(forms.ModelForm)
    name = forms.CharField(required=True)
    email = forms.EmailField(required=True)
    subject = forms.TypedChoiceField(choices=SubjectEnum.choices(), coerce=str) 
    message = forms.CharField(widget=forms.Textarea)

    class Meta:
        model = Contact
        fields = ['name', 'email', 'subject', 'message']

如果您没有型号Contact，则应使用Form代替ModelForm：

class ContactForm(forms.Form):
    name = forms.CharField(required=True)
    email = forms.EmailField(required=True)
    subject = forms.TypedChoiceField(choices=SubjectEnum.choices(), coerce=str) 
    message = forms.CharField(widget=forms.Textarea)

   def __init__(self, *args, **kwargs):
        self.helper = FormHelper()
        self.helper.add_input(Submit('submit', 'Submit'))
        super(ContactForm, self).__init__(*args, **kwargs)

See the documentation了解有关ModelForm及其使用的更多信息。

来自Dropdown的主题使用枚举Django

1 个答案: