how to resolve error in sub documents mongoose/express - express

Question

I am developing a web application based on the Mean Stack, but I have a care with Add and Edit operations, particularly with sub documents of the Field "order", the console tells me that "reference" is undefined on the line "order.reference" : req.body.order.reference,
, I don't know how to for sub documents. When I add or modify any of "order" fields I got an error, but when I add all the Fields without exception it works. here is my mongoose diagram:
var mongoose = require('mongoose')
, Schema = mongoose.Schema;
var ContactSchema = new Schema({
name: {type: String},
order: {
reference : {type : String},
adresse : {type : String} ,
product : {type : String}
}
});
var ContactModel = mongoose.model('Contact', ContactSchema);
mongoose.connect('mongodb://localhost/contact');
exports.add = function(req, res) {
var contact = req.body;
contact = new ContactModel({
name: req.body.name,
"order.reference" : req.body.order.reference,
"order.adresse" : req.body.order.adresse,
"order.product" : req.body.order.product
});
contact.save(function (err) {
if (!err) {
res.json(true);
} else {
console.log(err);
res.json(false);
}
});
return res.jsonp(req.body);
};
exports.edit = function (req, res) {
var id = req.params.id;
if (id) {
ContactModel.findById(id, { upsert: true }, function (err, contact) {
contact.name = req.body.name,
contact.order.reference = req.body.order.reference,
contact.order.adresse = req.body.order.adresse ,
contact.order.product = req.body.order.product
contact.save(function (err) {
if (!err) {
res.json(true);
} else {
res.json(false);
console.log(err);
}
});
});
}
};
Thank you for your time, I can provide angular code and html

Answer 1

You'll probably want to use Express and the body parser:
How do you extract POST data in Node.js?
Note: I believe this was written for Express 3 and the syntax is a little different for Express 4