controllers_config.js

var mongoose = require('mongoose'),
  Config = mongoose.model('Config')

  exports.create = function(req, res) {
    
    var conf = new Config(req.body);

    console.log(conf)
    
    conf.save(function(err) {
      if (err) throw new Error('Error while saving option');
      console.log("Ouray !");
      res.send(conf)
    })
  }

index.js

var mongoose = require('mongoose');
require('./model_config');
c = require('./controllers_config');
express = require('express')

app = express()
app.listen(4000);
app.post('/create', c.create);
mongoose.connect('localhost', 'test')

model_config.js

//The model :


var mongoose = require('mongoose')
  , Schema = mongoose.Schema

var ConfigSchema = new Schema({
    config: Schema.Types.Mixed
  , createdAt: {type : Date, default : Date.now}
})

mongoose.model('Config', ConfigSchema)

query.query

// shell 1
$ node index.js

// shell 2
$ curl -i -X POST -d 'config[title]=sas&config[facebook][clientID]=soapjs&config[facebook][clientSecret]=&config[facebook][callbackURL]=&config[pixcube][path]=booooob&config[cube][www]=' localhost:4000/create
HTTP/1.1 200 OK
X-Powered-By: Express
Content-Type: application/json; charset=utf-8
Content-Length: 94
Date: Tue, 14 May 2013 20:53:43 GMT
Connection: keep-alive

{
  "__v": 0,
  "_id": "5192a4571a8bc33144000001",
  "createdAt": "2013-05-14T20:53:43.475Z"
}

// shell 1
{ _id: 5192a4571a8bc33144000001,
  createdAt: Tue May 14 2013 16:53:43 GMT-0400 (EDT) }
Ouray !