Add embedded document helpers to Mongoose.js

gistfile1.js

mongoose.Types.DocumentArray.prototype.sortByDir = function(direction, path) {
	this.sort(function(a, b) {
		var aVal = a.get(path),
			bVal = b.get(path);
		if (!aVal && !bVal) return 0;
		if (!aVal) return 1;
		if (!bVal) return -1;
		if (direction > 0) return !(aVal < bVal);
		return (aVal < bVal);
	});
};

mongoose.Types.DocumentArray.prototype.sortAsc = function(path) {
	this.sortByDir(1, path);
};

mongoose.Types.DocumentArray.prototype.sortDesc = function(path) {
	this.sortByDir(-1, path);
};

mongoose.Types.DocumentArray.prototype.find = function(query, limit) {
	var results = [];
	if (!limit) limit = this.length;
	this.forEach(function(doc) {
		var isMatch = true;
		for (var key in query) {
			if (doc.get(key) != query[key]) {
				isMatch = false;
			}
		}
		if (isMatch) {
			results.push(doc);
			if (results.length === limit) {
				return results;
			}
		}
	});
	return results;
};

mongoose.Types.DocumentArray.prototype.findOne = function(query) {
	return this.find(query, 1)[0];
};