Update document with error: Cast to string failed for value undefined

Question

I have a simple document with name (require), description (optional). In my model, I update a document with a valid id and I pass description with value undefined because I

Answer 1

Try dropping down to the native driver like so:

var update = function (model, callback) {
   RoleSchema.update({_id: model.id}, {$unset: {description: 1 }}, callback);
   });
};