How do I pass multiple models into a view? - node.js

Question

I am easily and successfully passing a single model into a view in one of my express routes like this:
exports.locations = function(req, res){
Location.find(function(err, results) {
res.render('locations', { title: 'Locations', locations: results });
});
};
I have another route where I need to pass 2 result sets into the view, how do I do that? I have tried doing this, but it doesn't seem to be working:
exports.locationdetail = function(req, res) {
var packages = Package.find();
Location.findById(req.params.id, function(err, result) {
res.render('location-detail', { title: 'Location Details', location: result, packages: packages });
});
};
Edit 1
The error I am getting is:
Cannot read property 'name' of undefined
My model looks like this:
var mongoose = require('mongoose')
,Schema = mongoose.Schema;
var PackageSchema = new mongoose.Schema({
name: String,
prev_package: String,
featured: Boolean,
services: Array
});
module.exports = mongoose.model('Package', PackageSchema);
And I am using this model in another view, and everything is working like a champ.

Answer 1

var mongoOp = require("./models/mongo");
var async = require('async');
router.get("/",function(req,res){
var locals = {};
var userId = req.params.userId;
async.parallel([
//Load user data using Mangoose Model
function(callback) {
mongoOp.User.find({},function(err,user){
if (err) return callback(err);
locals.user = user;
callback();
});
},
//Load posts data using Mangoose Model
function(callback) {
mongoOp.Post.find({},function(err,posts){
if (err) return callback(err);
locals.posts = posts;
callback();
});
}
], function(err) { //This function gets called after the two tasks have called their "task callbacks"
if (err) return next(err); //If an error occurred, we let express handle it by calling the `next` function
//Here `locals` will be an object with `user` and `posts` keys
//Example: `locals = {user: ..., posts: [...]}`
res.render('index.ejs', {quotes: locals.user,userdata: locals.posts})
});
});

Answer 2

So, it looks like this was another asynchronous "gotcha". Putting this into a nested callback did the trick:
exports.locationdetail = function(req, res) {
Location.findById(req.params.id, function(err, result) {
Package.find(function (err, results) {
res.render('location-detail', { title: 'Location Details', location: result, packages: results });
});
});
};