REST APIs

express_app/app.js

@@ -3,6 +3,10 @@ var express = require('express');
 var path = require('path');
 var cookieParser = require('cookie-parser');
 var logger = require('morgan');
+
+// Require file system module
+var fs = require('file-system');
+
 var mongoose = require('mongoose');
 
 var app = express();
@@ -15,17 +19,6 @@ mongoose.connect('mongodb://localhost:27017/express_app', function(){
   process.exit(1);
 });
 
-// Require file system module
-var fs = require('file-system');
-
-// Include controllers
-fs.readdirSync('controllers').forEach(function (file) {
-	if(file.substr(-3) == '.js') {
-		const route = require('./controllers/' + file)
-		route.controller(app)
-	}
-})
-
 // view engine setup
 app.set('views', path.join(__dirname, 'views'));
 app.set('view engine', 'pug');
@@ -36,6 +29,14 @@ app.use(express.urlencoded({ extended: false }));
 app.use(cookieParser());
 app.use(express.static(path.join(__dirname, 'public')));
 
+// Include controllers
+fs.readdirSync('controllers').forEach(function (file) {
+	if(file.substr(-3) == '.js') {
+		const route = require('./controllers/' + file)
+		route.controller(app)
+	}
+})
+
 // catch 404 and forward to error handler
 app.use(function(req, res, next) {
   next(createError(404));
@@ -52,6 +53,6 @@ app.use(function(err, req, res, next) {
   res.render('error');
 });
 
-app.listen(3000, function(){console.log('listening on 3000')})
-
 module.exports = app;
+
+app.listen(3000, function(){console.log('listening on 3000')})
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express_app/controllers/users.js

+var User = require('../models/User');
+
 module.exports.controller = (app) => {
-	// get users
+	
+  // get all users
 	app.get('/users', (req, res) => {
-		res.render('users', {
-			title: 'Users',
-			description: 'This is the description of all users' });
+		User.find({}, 'name email', function(error, users) {
+      if(error){ console.log(error); }
+      res.send({
+        users: users
+      })
+    })
 	})
+  
+  // get a single user details
+  app.get('/users/:id', (req, res) => {
+    User.findById(req.params.id, 'name email', function(error, user){
+      if(error){ console.log(error); }
+      res.send(user)
+    })
+  })
+  
+  // add a new user
+  app.post('/users', (req, res) => {
+    const user = new User({
+      name: req.body.name,
+      email: req.body.email
+    })
+    
+    user.save(function(error, user){
+      if(error){ console.log(error); }
+      res.send(user)
+    })
+  })
+  
+  // update a user
+  app.put('/users/:id', (req, res)=>{
+    User.findById(req.params.id, 'name email', function(error, user){
+      if(error) { console.log(error); }
+      
+      user.name = req.body.name
+      user.email = req.body.email
+      user.save(function(error, user){
+        if(error){ console.log(error); }
+        res.send(user)
+      })
+    })
+  })
+  
+  // delete a user
+  app.delete('/users/:id', (req, res) => {
+    User.remove({
+      _id: req.params.id
+    }, function(error, user){
+      if(error){ console.error(error); }
+      res.send({ success: true})
+    })
+  })
+  
 }
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express_app/models/User.js

-const mogoose = require('mongoose');
+const mongoose = require('mongoose')
 
-const Schema = mongoose.Schema;
+const Schema = mongoose.Schema
 
 const UserSchema = new Schema({
   name: String,
@@ -8,4 +8,4 @@ const UserSchema = new Schema({
 })
 
 const User = mongoose.model('User', UserSchema)
-module.expose = User
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+module.exports = User
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