ModelForm 没有指定模型类。使用模型形式时

Question

回溯（最近一次通话最后）： 文件“E:\farming\eauth\lib\site-packages\django\core\handlers\exception.py”，第 47 行，在内部 响应 = get_response（请求） _get_response 中的文件“E:\farming\eauth\lib\site-packages\django\core\handlers\base.py”，第 179 行 响应 = Wrapped_callback(request, *callback_args, **callback_kwargs) 文件“E:\farming\eauth\fwave\farmingwave\views.py”，第 14 行，联系方式 表格 = ContactForm() 文件“E:\farming\eauth\lib\site-packages\django\forms\models.py”，第 287 行，在 __init__ raise ValueError('ModelForm 没有指定模型类。') 异常类型：/about_us 处的 ValueError 异常值：ModelForm 没有指定模型类。

我的views.py文件

def contact(request):
if request.method == 'POST':
    form = ContactForm(request.POST)
    if form.is_valid():
        # send email code goes here
        return HttpResponseRedirect('/thanks/')
else:
    form = ContactForm()

return render(request, 'contact-form.html', {'form': form})

我的 form.py 文件

from django import forms
from django.core.validators import RegexValidator
from django.forms import ModelForm



class ContactForm(ModelForm):
    
    name = forms.CharField(max_length=100,widget=forms.TextInput(attrs={'class' : 'form-control col-lg-12', 'placeholder': 'Name'}), label='')
    email = forms.EmailField(widget=forms.TextInput(attrs={'class' : 'form-control col-lg-12', 'placeholder': 'Email'}), label='')
    Phonenumber = forms.CharField(max_length=10, validators=[RegexValidator(r'^\d{1,10}$')], widget=forms.TextInput(attrs={'class' : 'form-control col-lg-12', 'placeholder': 'Mobile'}), label='')

Answer 1

这意味着您没有指定 ContactForm 使用的模型。这通常应该在表单中，但无论您想要它在哪里，表单都应该是这样的：

from django import forms
from django.core.validators import RegexValidator
from django.forms import ModelForm
from .models import YourModel



class ContactForm(ModelForm):

    name = forms.CharField(max_length=100,widget=forms.TextInput(attrs={'class' : 
    'form-control col-lg-12', 'placeholder': 'Name'}), label='')
    email = forms.EmailField(widget=forms.TextInput(attrs={'class' : 'form-control 
    col-lg-12', 'placeholder': 'Email'}), label='')

    phonenumber = forms.CharField(max_length=10, validators= 
    [RegexValidator(r'^\d{1,10}$')], widget=forms.TextInput(attrs={'class' : 'form- 
    control col-lg-12', 'placeholder': 'Mobile'}), label='')

    class Meta:
        model = YourModel
        fields = ("name", "email", "phonenumber")

如果您打算只添加一个表单，那么您的表单应该如下所示。

from django.core.validators import RegexValidator
from django.forms import Form



class ContactForm(Form):

    name = forms.CharField(max_length=100,widget=forms.TextInput(attrs={'class' : 
    'form-control col-lg-12', 'placeholder': 'Name'}), label='')
    email = forms.EmailField(widget=forms.TextInput(attrs={'class' : 'form-control 
    col-lg-12', 'placeholder': 'Email'}), label='')

    phonenumber = forms.CharField(max_length=10, validators= 
    [RegexValidator(r'^\d{1,10}$')], widget=forms.TextInput(attrs={'class' : 'form- 
    control col-lg-12', 'placeholder': 'Mobile'}), label='')

    

您的视图现在应该如下所示

from django.core.mail import send_mail
def contact(request):
    if request.method == 'POST':
        form = ContactForm(request.POST)
        if form.is_valid():
                            send_mail(
              'Subject here',
              f'Name: {form.name}\n Email: {form.email} \n Phone No: 
                 {form.phonenumber}',
              'from@example.com',
              ['to@example.com'],
              fail_silently=False,
              )
            return HttpResponseRedirect('/thanks/')
    else:
        form = ContactForm()

    return render(request, 'contact-form.html', {'form': form})

另外，请在 settings.py 文件中指定您的电子邮件配置，如下所示：

DEFAULT_FROM_EMAIL = "Yourdomain <email@yourdomain.com>"
EMAIL_BACKEND = "django.core.mail.backends.smtp.EmailBackend"
EMAIL_HOST = "yourdomain.com"
EMAIL_PORT = 587
EMAIL_USE_TLS = True # if your mail configurations uses TLS/SSL 
EMAIL_HOST_USER = "email@yourdomain.com"
EMAIL_HOST_PASSWORD = "your_email_password"

请注意，Yourdomain、email@yourdomain.com 和 your_email_password 只是占位符。你应该指定你自己的。