server.js

var express = require('express');
var app = express(); //create express app

var mongoose = require('mongoose');

var bodyParser = require('body-parser'); //pull information from http POST
var methodOverride = require('method-override'); // simulate DELETE and PUT
var path = require('path');

mongoose.connect('mongodb://mongo:27017/local');

// app.use(morgan('dev'));                                         // log every request to the console
app.use(bodyParser.urlencoded({'extended':'true'}));            // parse application/x-www-form-urlencoded
app.use(bodyParser.json());                                     // parse application/json
app.use(bodyParser.json({ type: 'application/vnd.api+json' })); // parse application/vnd.api+json as json
app.use(methodOverride());

app.use(express.static('/app/dest'));

var Todo = mongoose.model('Todo', {
    text : String
});

app.listen(8080);
console.log("App listening on port 8080");

//route
app.get('/todos', function(req, res) {
    // use mongoose to get all todos in the database
    Todo.find(function(err, todos) {
        console.log('find all todo');
        // if there is an error retrieving, send the error. nothing after res.send(err) will execute
        if (err) {
            res.send(err);
        }
        res.json(todos); // return all todos in JSON format
    });
});

// create todo and send back all todos after creation
app.post('/todos', function(req, res) {

    // create a todo, information comes from AJAX request from Angular
    Todo.create({
        text : req.body.text,
        done : false
    }, function(err, todo) {
        if (err)
            res.send(err);

        // get and return all the todos after you create another
        Todo.find(function(err, todos) {
            if (err)
                res.send(err)
            res.json(todos);
        });
    });

});

// delete a todo
app.delete('/todos/:todo_id', function(req, res) {
    Todo.remove({
        _id : req.params.todo_id
    }, function(err, todo) {
        if (err)
            res.send(err);

        // get and return all the todos after you create another
        Todo.find(function(err, todos) {
            if (err)
                res.send(err)
            res.json(todos);
        });
    });
});