python - 覆盖 clean()，数据不可访问

Question

我想扩展现有表单，以便在提交时发送电子邮件:

class BaseForm(forms.Form):

    field = forms.CharField()

    def clean(self):
        "do stuff"
        return self.cleaned_data

class MyForm(BaseForm):

    def clean_field(self):
        "do some validation"
        return self.cleaned_data['field']

class MyEmailingForm(MyForm):
    def clean(self):
        super(MyEmailingForm, self).clean()
        send_mail('Form data',
          self.cleaned_data['field'],
          'Form <noreply@myform.co.uk>',
          ["formdata@myform.co.uk"],
          fail_silently=True)

问题是 self.cleaned_data['field'] 无法从父类(super class)访问，我收到一个 KeyError。我需要做什么？

编辑

我认为我把事情过于简单化了。代码已更新，我认为问题可能是双重子类化。

Answer 1

您需要从基类方法和子类方法返回self.cleaned_data。