florianholzapfel/express-restify-mongoose — pull request #30 by doobinay (2013-11-21 15:43:38+00:00)
Title: Fix null ObjectId in createObject() and modifyObject()

Happen if you try to create/update a resource with a null ObjectId.

For example:
```
{
_customer: null
}
```

while customer is an ObjectId in the Schema.