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
  8 var app            = express();            // define our app using express
  9 var bodyParser    = require(‘body-parser‘);
 10 
 11 // mongoose setup
 12 var mongoose    = require(‘mongoose‘);
 13 mongoose.connect(‘mongodb://localhost:27017/myDatabase‘)    // connect to database ‘myDatabase‘
 14 
 15 // models setup
 16 var 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}));
 21 app.use( bodyParser.json());
 22 
 23 var port = process.env.PORT || 3000;
 24 
 25 
 26 
 27 // routes for our API
 28 // ==============================================================
 29 var router = express.Router();
 30 
 31 
 32 // 1. middle ware 
 33 router.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){        
 49         var 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){
 54             if(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){
 63             if(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){
 75             if(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){
 86             if(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){
 92                 if(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){
105                 if(err)
106                     res.send(err);
107                 res.json({ message: ‘Successfully deleted!‘});
108             }
109         )
110     });
111 
112 // more routes for our API will happen here
113 
114 // REGISTER OUR ROUTES
115 
116 // all of our routes will be prefixed with /api
117 app.use(‘/api‘, router);
118 
119 
120 // start the server
121 // ==============================================
122 app.listen(port);
123 console.log(‘Magic happens on port : ‘ + port);

1 var mongoose    = require(‘mongoose‘);
2 var Schema        = mongoose.Schema;
3 
4 var BearSchema    = new Schema( {
5     name:    String
6 });
7 
8 module.exports = mongoose.model(‘Bear‘, BearSchema);