Potential Mongoose Bug

event-mongoose.js

var mongoose = require('mongoose');

var EventUser = new mongoose.Schema({
	user_name: String,
	attending: Boolean
});

var Comments = new mongoose.Schema({
	date: Date,
	text: String,
	user_name: String
});

var Votes = new mongoose.Schema({
	date: Date, 
	user_name: String,
	is_up: Boolean
});

var EventSchema = new mongoose.Schema({
  to_date: Date,
  from_date: Date,
  location: String,
  name: String,
  suggested_by: String,
  description: String,
  users: [EventUser],
  comments: [Comments],
  suggestions: [EventSchema],
  votes: [Votes]
});

var Event = mongoose.model('Event', EventSchema);

module.exports = {
	getModel : function () {
		return Event
	},
	getNewModel : function () {
		return new Event();
	}
};

saving-method.js

var events = require('../models/event-mongoose.js');

//Save top-level vote, method does save correctly on model.save();
exports.event_vote = function (req, res) {
		return events.getModel().findById(req.body.id, function (err, doc) {
		if (err) {
			res.json(500, {'error': err});
		} else {

			var vote = {};
			vote['user_name'] = req.user.provider_displayName;
			vote['date'] = new Date();
			
			if (req.body.isUpVote === "true") {
				vote['is_up'] = true;
			} else {
				vote['is_up'] = false;
			}

			console.log('-------------Is Up: ' + vote['is_up']);

			var notFound = true;
			for (var i = 0; i < doc.votes.length; i++){
				if (doc.votes[i].user_name === vote['user_name']) {
					doc.votes[i].is_up = vote['is_up'];
					doc.votes[i].date = vote['date'];
					notFound = false;
				}
			}
			if(notFound){
				doc.votes.push(vote);
			}

			doc.save(function (err){
				if(err){
					res.json(500, {'error': err});
				} else {
					res.redirect('/home');
				}
			});
		}
	});
};

//Save embedded vote, method doesn't save correctly on model.save() call
exports.event_suggestion_vote = function (req, res) {
	return events.getModel().findById(req.body.eventId, function (err, doc) {
		if (err){
			res.json(500, {'error': err});
		} else {

			for (var i = 0; i < doc.suggestions.length; i++) {
				console.log('----------sug id         ' + doc.suggestions[i]._id);
				console.log('----------pass in sug id ' + req.body.suggestionId);
				console.log('----------matches ' + (doc.suggestions[i]._id == req.body.suggestionId));
				if (doc.suggestions[i]._id == req.body.suggestionId){
                                //We found the correct suggestion that received the vote
					var vote = {};
					vote['user_name'] = req.user.provider_displayName;
					vote['date'] = new Date();
					
					if (req.body.isUpVote === "true") {
						vote['is_up'] = true;
					} else {
						vote['is_up'] = false;
					}

					console.log('------------VOTE ' + vote);

					var notFound = true;
					for (var j = 0; j < doc.suggestions[i].votes.length; j++){

						if (doc.suggestions[i].votes[j].user_name === vote['user_name']) {
                                                        //The user has already voted, so just update there vote
							doc.suggestions[i].votes[j].is_up = vote['is_up'];
							doc.suggestions[i].votes[j].date = vote['date'];
							notFound = false;
						}

					}
					console.log('----------- not found ' + notFound);
					if(notFound){
						console.log('----------- votes length ' + doc.suggestions[i].votes.length);
						doc.suggestions[i].votes.push(vote);
						console.log('----------- votes length ' + doc.suggestions[i].votes.length);
					}
				}

			}
			console.log('---------');
			console.log(JSON.stringify(doc));
			console.log('---------');
			doc.save(function (err){
				if(err){
					res.json(500, {'error' : err});
				} else {
					res.redirect('/home');
				}
			});
		}
	});
};