Saving many-to-one with an invalid ID creates empty object

[jasperdenk]

When you save an object with a many-to-one relation and the ID for the many-to-one object is invalid, an empty new object is created.

For example:

Object1.save({ object2 = object2id });

if object2id is not a valid object2 ID, a new object2 object will be created in the database.

[mjhagen]

I'll look into it, but I think what makes this not a straight forward fix is that I use fake IDs while working with objects before they get persisted to that database.

Work around would be to check the objects you pass into save() beforehand.