django - 模型形式:覆盖清洁方法

Question

我有两个关于模型表单上的清洁方法的问题。这是我的例子:

class AddProfileForm(ModelForm):
        ...
        password = forms.CharField(max_length=30,widget=forms.PasswordInput(attrs={'class':'form2'}))
        password_verify = forms.CharField(max_length=30,widget=forms.PasswordInput(attrs={'class':'form2'}), label='Retype password')
        ...

        class Meta:
            model = UserModel
            fields=("username", "password", "password_verify", "first_name", "last_name", "date_of_birth", "biography", "contacts", )

        #called on validation of the form
        def clean(self):
            #run the standard clean method first
            cleaned_data=super(AddProfileForm, self).clean()
            password = cleaned_data.get("password")
            password_verify = cleaned_data.get("password_verify")

            #check if passwords are entered and match
            if password and password_verify and password==password_verify:
                print "pwd ok"
            else:
                raise forms.ValidationError("Passwords do not match!")

            #always return the cleaned data
            return cleaned_data

我应该总是调用标准的干净方法吗？

cleaned_data=super(AddProfileForm, self).clean()

我应该总是返回cleaned_data 变量吗？

return cleaned_data

Answer 1

对于 1，是的，如果您想使用父类的验证器。请参阅 doc 上的此说明.

Warning

The ModelForm.clean() method sets a flag that makes the model validation step validate the uniqueness of model fields that are marked as unique, unique_together or unique_for_date|month|year.

If you would like to override the clean() method and maintain this validation, you must call the parent class’s clean() method.

对于 2，是的，如果数据正确验证。否则引发验证错误。