Populate consulta con Node.js y Mongodb

[cmarrero01]

Bueno, quedo resulto, habia que definir el modelo... algo asi:

Código Javascript:

var mongoose = require('mongoose'),
    Schema   = mongoose.Schema;
 
//Listado de paises
var countrySchema = new Schema({
    name:{ type: String }
});
 
//Usuarios del sistema
var userSchema = new Schema({
    full_name:{ type: String },
    username: { type: String, required: true, index: { unique: true }},
    email:    { type: String, required: true, index: { unique: true } },
    password: { type: String, required: true },
    birthday: { type: String },
    country:  { type : Schema.Types.ObjectId, ref : 'Country' },
    genre:    { type: String, enum: ['Female', 'Male'] }
});
 
var Country = mongoose.model('Country', countrySchema, 'CountryModel');
var User = mongoose.model('User', userSchema, 'UserModel');
exports.Country = Country;
exports.User = User;