mongoose GH-377 Example for showing how to update an embedded array member and then re-order the embedded array correctly

GH-377-a.js

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

mongoose.connect('mongodb://localhost/test');

var EmbeddedDocSchema = new Schema({
    date: Date
  , name: String
});

mongoose.model('EmbeddedDoc', EmbeddedDocSchema);
var EmbeddedDoc = mongoose.model('EmbeddedDoc');

var ObservationSchema = new Schema({
  time_label: String,
  embedded_docs: [EmbeddedDocSchema]
});

mongoose.model('Observation', ObservationSchema);
var Observation = mongoose.model('Observation');

var o = new Observation();
o.embedded_docs.push(
    {name: 'first', date: (+new Date) - 60000000 }
  , {name: 'second', date: (+new Date) - 50000000 }
  , {name: 'third', date: +new Date }
); 
o.save(function(err){
  if (err) throw err;
  var toModify = o.embedded_docs[2];
  toModify.date = (+new Date) - 55000000;
  o.save( function (err) {
    if (err) throw err;
    toModify.remove();
    o.save( function (err) {
      if (err) throw err;
      o.embedded_docs.splice(1, 0, toModify);
      o.save( function (err) {
        if (err) throw err;
        console.log(o.embedded_docs);
        mongoose.disconnect();
      }); 
    }); 
  }); 
});