Nodejs+Mongo+WebAPI

              1
            //
             server.js

              2
              3
            //
             base setup

              4
            //
             ===========================================================

              5
              6
            //
             call the package we need
              7
            var express     = require(‘express‘);    // call expreess  8var app            = express();            // define our app using express  9var bodyParser    = require(‘body-parser‘);
 10 11// mongoose setup 12var mongoose    = require(‘mongoose‘);
 13 mongoose.connect(‘mongodb://localhost:27017/myDatabase‘)    // connect to database ‘myDatabase‘
 14 15// models setup 16var Bear = require(‘./models/bear‘)
 17 18// configure app to use bodyParser()
 19// this will let us get the data from a POST 20 app.use( bodyParser.urlencoded({ extended: true}));
 21app.use( bodyParser.json());
 22 23var port = process.env.PORT || 3000;
 24 25 26 27// routes for our API
 28// ============================================================== 29var router = express.Router();
 30 31 32// 1. middle ware  33router.use( function(req, res, next){
 34// do logging 35     console.log(‘Something is happening.‘);
 36    next();
 37});
 38 39// 2. test route to make sure everything is work  40 router.get(‘/‘, function(req, res){
 41     res.json( { message: ‘Horray! Welcome to our api!‘});
 42});
 43 44// 3. routes end in: /bears 45 router.route(‘/bears‘)
 46 47// 3-1. create a bear (accessed at POST http://localhost:3000/api/bears) 48    .post( function(req, res){        
 49var newBear = new Bear();        // create a new instance of the Bear model 50         newBear.name = req.body.name;    // set the bears name ( comes from the request )
 51 52// save the bear and check for errors 53        newBear.save ( function(err){
 54if(err)
 55                res.send(err);
 56             res.json({ message: ‘Bear created!‘});            
 57         });
 58    })
 59 60// 3-2. get all the bears (accessed at GET http://localhost:3000/api/bears) 61     .get( function(req, res){
 62        Bear.find( function(err, bears){
 63if(err)
 64                res.send(err);
 65            res.json(bears);
 66        })
 67    } );  
 68 69// 4. routes end in: /bears/:bears_id 70 router.route(‘/bears/:bear_id‘)
 71 72//4-1. get the bear with this id (accessed at GET http://localhost:3000/api/bears/:bear_id) 73     .get(function(req, res){
 74         Bear.findById(req.params.bear_id, function(err, bear){
 75if(err)
 76                res.send(err);
 77            res.json(bear);
 78        });
 79    })
 80 81// 4-2. update the bear with this id (accessed at PUT http://localhost:3000/api/bears/:bear_id) 82    .put(function(req, res){
 83 84// use bear model to find the bear we want 85         Bear.findById(req.params.bear_id, function(err, bear){
 86if(err)
 87                res.send(err);
 88             bear.name = req.body.name; // update the bears info
 89 90// save the bear 91            bear.save(function(err){
 92if(err)
 93                    res.send(err);
 94                 res.json({message: ‘Bear updated!‘});
 95            });
 96        });
 97    })
 98 99// 4-3. delete the bear with this id (accessed at DELETE http://localhost:3000/api/bears/:bear_id)100    .delete(function(req, res){
101        Bear.remove(
102            {
103                 _id: req.params.bear_id
104            }, function(err, bear){
105if(err)
106                    res.send(err);
107                 res.json({ message: ‘Successfully deleted!‘});
108            }
109        )
110    });
111112// more routes for our API will happen here
113114// REGISTER OUR ROUTES
115116// all of our routes will be prefixed with /api117 app.use(‘/api‘, router);
118119120// start the server
121// ==============================================122app.listen(port);
123 console.log(‘Magic happens on port : ‘ + port);

            1
            var mongoose    = require(‘mongoose‘);
2var Schema        = mongoose.Schema;
34var BearSchema    = new Schema( {
5    name:    String
6});
78 module.exports = mongoose.model(‘Bear‘, BearSchema);