express.js example

gistfile1.js

'use strict';

var express = require('express');
var mongoskin = require('mongoskin');

var allowCrossDomain = function(req, res, next) {
    res.header('Access-Control-Allow-Origin', '*');
    res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE,OPTIONS');
    res.header('Access-Control-Allow-Headers', 'Content-Type, Authorization, Content-Length, X-Requested-With');

    // intercept OPTIONS method
    if ('OPTIONS' == req.method) {
        res.send(200);
    }
    else {
        next();
    }
};

var app = express();

app.configure(function(){
    app.use(express.bodyParser());
    app.use(allowCrossDomain);
});

var db = mongoskin.db('localhost:13337/portfolio', { safe: true});

app.param('collection', function(req, res, next, collection){
    req.collection = db.collection(collection);
    return next();
});

app.get('/', function(req, res){
    res.send('Nothing to see here...');
});

app.get('/:collection/', function(req, res){
    req.collection.find().toArray(function(err, projects){
        res.send(projects);
    });
});

app.get('/:collection/:id', function(req, res){
    req.collection.findById(req.params.id,
        function(e, result){
            if (e) return next(e);
            res.send(result);
        });
});

app.post('/:collection/', function(req, res){
    req.collection.insert(req.body, {}, function(e, results){
        if(e) return next(e);
        res.send(results[0]);
    });
});

app.put('/:collection/:id', function(req, res){
    delete req.body._id;

    req.collection.updateById(req.params.id, {
        $set:req.body
    }, {
        safe:true,
        multi:false
    }, function(e, result){
        if (e) return next(e)
        res.send((result===1)?{msg:'success'}:{msg:'error'})
    })
});

app.del('/:collection/:id', function(req, res){
    req.collection.removeById(req.params.id,
        function(e, result){
            if (e) return next(e);
            res.send((result===1)?{msg:'success'}:{msg:'error'});
        });
});

app.listen(3000);