python - django 用户创建表单需要 keyerror

Question

我制作了一个自定义注册表单，它继承自 UserCreationForm。但是，当您尝试提交时，其中一个字段为空，我收到一个 KeyError on required。这似乎发生在 django 源代码的某个地方，但我很确定它是因为我的自定义清理方法。

表格:

class RegistrationForm(UserCreationForm):
    """
    edit the User Registration form to add an emailfield
    """

    class Meta:
        model = User
        fields = ('username', 'password1', 'password2')

    def __init__(self, *args, **kwargs):
        super(RegistrationForm, self).__init__(*args, **kwargs)
        #add custom errormessages
        self.fields['username'].error_messages = {
        'invalid': 'Invalid username'
        }
        self.fields['password2'].label = "Confirm Password"

    #make sure username is lowered and unique
    def clean_username(self):
        username = self.cleaned_data.get('username')
        try:
            User.objects.get(username__iexact=username)
            raise forms.ValidationError("This username is already in use.")
        except User.DoesNotExist:
            pass

        return username

    def save(self, commit=True):
        user = super(RegistrationForm, self).save(commit=False)
        if commit:
            user.save()
        return user

错误日志 http://pastebin.com/8Y6Tp7Rw

注意:我使用的是 django 1.8

Answer 1

您正在用您自己的字典替换所有“用户名”字段 error_messages 字典。相反，您应该像这样使用您的自定义消息更新 error_messages 字典:

self.fields['username'].error_messages.update({
    'invalid': 'Invalid username'
})