类型错误：validate_email() 缺少 1 个必需的位置参数：“密码”

Question

我正在尝试覆盖 rest_auth 的默认 LoginSerializer，当我尝试登录时，它会抛出此错误。 这是我的代码：

settings.py

REST_AUTH_SERIALIZERS = {
    'LOGIN_SERIALIZER': 'Customer.apis.serializers.LoginSerializer',
}

和登录序列化器

class LoginSerializer(serializers.ModelSerializer):

    email = serializers.EmailField(write_only=True)
    password = serializers.CharField(write_only=True)

    class Meta:
        model = Customer
        fields = ['email', 'password']

    def validate_email(self, email, password):
        user = None
        if email and password:
            user = authenticate(email=email,
                                password=password)
        else:
            raise exceptions.ValidationError('Invalid Credentials')
        return user

    def validate(self, attrs):
        email = attrs.get('email')
        password = attrs.get('password')
        user = self.validate_email(email, password)
        attrs['user'] = user
        return attrs

可能是什么错误？以及可能的解决方法？

Answer 1

好吧，如果您将方法命名为validate_<field_name>，那么它将在该字段的表单验证期间（根据documentation）被调用，并且只有一个参数将通过该方法，即那个领域。因此，您需要将其重命名为其他名称。例如：

def verify_credentials(self, email, password):
    user = None
    if email and password:
        user = authenticate(email=email,
                            password=password)
    else:
        raise exceptions.ValidationError('Invalid Credentials')
    return user

def validate(self, attrs):
    email = attrs.get('email')
    password = attrs.get('password')
    user = self.verify_credentials(email, password)
    attrs['user'] = user
    return attrs