可以使用django表单吗？

我有一个表单，管理员在其中输入逗号分隔的电子邮件地址列表，该表单在将每个电子邮件地址添加到数据库之前对其进行验证。通过使用自己的（非django）表单，我可以很好地做到这一点。我尝试将此迁移到使用modelforms，但遇到了一些问题。这是我目前拥有的代码--

---

我遇到了问题，因为在验证表单之前，我无法调用

cleaned_data（）

，但是表单不会作为一个整体进行验证（只有其迭代会）。是否可以使用django的表单构造此函数？如果是，我将如何完成这项任务？谢谢。

在本例中，我不会使用

ModelForm

，因为它们适用于希望用一个表单表示一个模型实例的情况。在这里，您希望使用一个表单生成多个实例。因此，只需编写一个带有自定义字段的通用表单（中有一个具体的示例）以及一个自定义保存方法：

from django import forms
from django.core.validators import validate_email

class MultiEmailField(forms.Field):
    def to_python(self, value):
        "Normalize data to a list of strings."

        # Return an empty list if no input was given.
        if not value:
            return []
        return value.split(',')

    def validate(self, value):
        "Check if value consists only of valid emails."

        # Use the parent's handling of required fields, etc.
        super(MultiEmailField, self).validate(value)

        for email in value:
            validate_email(email)


class EmailListForm(forms.Form):
    emails = forms.MulitEmailField()
    network = forms.ModelChoiceField(queryset=Network.objects.all())

    # save the emails to the db
    def save(self):
        for email in self.cleaned_data.get('emails'):
            EmailList.objects.create(email = email,
                                     network=self.network)

# in views
def email(request):
    if request.method == 'POST':
        form = EmailListForm(request.POST)
        if form.is_valid():
            form.save()
            return redirect(...somewhere...)
    else:
        form = EmailListForm()

    return render(request, 'some/template.html', { 'form': form }

---

谢谢，这非常有用。

class MultiEmailField

是在forms.py中还是在model中？非常欢迎：）它实际上在fields.py中与forms.py和models.py位于同一目录中

from django import forms
from django.core.validators import validate_email

class MultiEmailField(forms.Field):
    def to_python(self, value):
        "Normalize data to a list of strings."

        # Return an empty list if no input was given.
        if not value:
            return []
        return value.split(',')

    def validate(self, value):
        "Check if value consists only of valid emails."

        # Use the parent's handling of required fields, etc.
        super(MultiEmailField, self).validate(value)

        for email in value:
            validate_email(email)


class EmailListForm(forms.Form):
    emails = forms.MulitEmailField()
    network = forms.ModelChoiceField(queryset=Network.objects.all())

    # save the emails to the db
    def save(self):
        for email in self.cleaned_data.get('emails'):
            EmailList.objects.create(email = email,
                                     network=self.network)

# in views
def email(request):
    if request.method == 'POST':
        form = EmailListForm(request.POST)
        if form.is_valid():
            form.save()
            return redirect(...somewhere...)
    else:
        form = EmailListForm()

    return render(request, 'some/template.html', { 'form': form }