SAVE

save_sweetness.js

var saveUser = function(callback) {
  User.update({_id: this._id}, this, callback); 
}

User.findOne = function(selector, callback) {
  MongoHelper.findOne(selector, collectionName, function(err, result) {
    if (err) return callback(err);
    
    result.save = saveUser;
    return callback(null, result);
  }); 
}