serializer won't serialize an empty queryset or an iterator with a None item

[adrian_nye]

Ideally, I'd like to be able to serialize any queryset (including an empty one) or a list of django objects including one that is None,
and when I deserialize I should get the same queryset or the same list.

What happens now is you get the error 'NoneType' object has no attribute '_meta'.

If that is not possible, then it should be documented that an empty queryset or an iterator containing a None object cannot be serialized.

[Russell Keith-Magee]

An empty queryset can be serialized without difficulty. A list that contains a value of None is not. The documentation says that serialize will work on any iterator that yields Django objects. None is not a Django object.