LadonTypes can't be nulled

[jsgaarde]

I have this ladon complex types: http://pastebin.com/50mgbKGm
There are three classes: Customer, Contact, ContactType

Customer has many Contacts.
Contact is mebmer of one ContactType.

Then I send this SOAP request: http://pastebin.com/zMT7HYAH
Please focus on this line, contactType is empty(NULL): <contactType xsi:nil="true" xsi:type="ns1:ContactType"/>

I log values of ContactType attributes (ID, Name) on the server side and this is result:
INFO:ID:{'doc': 'ID of contact type', 'type': <class 'int'>, 'nullable': True}
INFO:Name:{'doc': 'Name of contact type', 'type': <class 'str'>, 'nullable': True}

I believe that when I put this object back in response, so the dispatcher will interpret these values as NULLs. But I need work with these attributes on the server. Eg. insert new ContactType into database and this is not possible.

[jsgaarde (jakob-simon-gaarde)]

LadonType attributes that are None or untouched with no default value, will have the attribute xsi:nil set.

The test service I used to fix the bug can be found here:

http://bazaar.launchpad.net/~ladon-dev-team/ladon/ladon/files/head:/frameworks/python/support/bugs/926442/