Compound JS Relationship Access - node.js

Question

I have defined 2 schema objects as below (for use in a mongodb)
var User = describe('User', function () {
property('name', String);
property('email', String);
property('password', String);
set('restPath', pathTo.users);
});
var Message = describe('Message', function () {
property('userId', String, { index : true });
property('content', String);
property('timesent', Date, { default : Date });
property('channelid', String);
set('restPath', pathTo.messages);
});
Message.belongsTo(User, {as: 'author', foreignKey: 'userId'});
User.hasMany(Message, {as: 'messages', foreignKey: 'userId'});
But I am unable to access the related messages object:
action(function show() {
this.title = 'User show';
var that = this;
this.user.messages.build({content:"bob"}).save(function(){
that.user.messages(function(err,message){
console.log('Messages:');
console.log(message);
});
});
// ... snip ...
}
});
Despite a new message being added to the message collection the array of messages is always empty.
I ran db.Message.find({userId:'517240bedd994bef27000001'}) through the mongo shell and that displayed the messages as you would expect, so I am begining to wonder if there is an issue with the mongo adapter.
One to Many relationship in CompoundJS Shows a similar issue (I think).
As far as I can work out from the docs, this should work. What am I doing wrong?
EDIT:
After applying the changes to my schema as suggested by Anatoliy I dropped my mongo database and updated npm but then when I tried to create a new user I got the below:
Express
500 TypeError: Object #<Object> has no method 'trigger' in users controller during "create" action
at Object.AbstractClass._initProperties (/mnt/share/chatApp2/node_modules/jugglingdb/lib/model.js:123:10)
at Object.AbstractClass (/mnt/share/chatApp2/node_modules/jugglingdb/lib/model.js:31:10)
at Object.ModelConstructor (/mnt/share/chatApp2/node_modules/jugglingdb/lib/schema.js:193:23)
at Function.AbstractClass.create (/mnt/share/chatApp2/node_modules/jugglingdb/lib/model.js:222:15)
at Object.create (eval at (/mnt/share/chatApp2/node_modules/compound/node_modules/kontroller/lib/base.js:157:17), :16:10)....
EDIT2:
Create action:
action(function create() {
User.create(req.body.User, function (err, user) {
respondTo(function (format) {
format.json(function () {
if (err) {
send({code: 500, error: user && user.errors || err});
} else {
send({code: 200, data: user.toObject()});
}
});
format.html(function () {
if (err) {
flash('error', 'User can not be created');
render('new', {
user: user,
title: 'New user'
});
} else {
flash('info', 'User created');
redirect(path_to.users);
}
});
});
});
});

Answer 1

It's an issue with ObjectID. In your schema code:
property('userId', String, { index : true });
So userId is string, but when you call user.messages user.id used (and it's an ObjectID).
As a solution just remove this line from your schema definition.
P.S. in your case you can define relations as:
Message.belongsTo('author', {model: User, foreignKey: 'userId'});
User.hasMany('messages');