註冊的基本程式

通過這個例子，將解釋將 node.js 程式碼分成不同的模組/資料夾以便更好地保持不變性。遵循這種技術使其他開發人員更容易理解程式碼，因為他可以直接引用相關檔案而不是通過整個程式碼。主要用途是當你在團隊中工作並且新的開發人員在稍後階段加入時，他將更容易使用程式碼本身。

index.js ： - 此檔案將管理伺服器連線。

//Import Libraries
var express = require('express'),
    session = require('express-session'),
    mongoose = require('mongoose'),
    request = require('request');

//Import custom modules
var userRoutes = require('./app/routes/userRoutes');
var config = require('./app/config/config');

//Connect to Mongo DB
mongoose.connect(config.getDBString());

//Create a new Express application and Configure it
var app = express();

//Configure Routes
app.use(config.API_PATH, userRoutes());

//Start the server
app.listen(config.PORT); 
console.log('Server started at - '+ config.URL+ ":" +config.PORT);

config.js ： - 該檔案將管理所有與配置相關的引數，這些引數將始終保持相同。

var config = {
VERSION: 1,
BUILD: 1,
URL: 'http://127.0.0.1',
API_PATH : '/api', 
PORT : process.env.PORT || 8080,
DB : {
    //MongoDB configuration
    HOST : 'localhost',
    PORT : '27017',
    DATABASE : 'db'
},

/* 
 * Get DB Connection String for connecting to MongoDB database
 */
getDBString : function(){
    return 'mongodb://'+ this.DB.HOST +':'+ this.DB.PORT +'/'+ this.DB.DATABASE;
},

/*
 * Get the http URL 
 */
getHTTPUrl : function(){
    return 'http://' + this.URL + ":" + this.PORT;
}

module.exports = config;

user.js ： - 定義模式的模型檔案

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

//Schema for User
var UserSchema = new Schema({
    name: {
        type: String,
    //    required: true
    },
    email: {
        type: String
    },
    password: {
        type: String,
        //required: true
    },
    dob: {
        type: Date,
        //required: true
    },
    gender: {
        type: String, // Male/Female
    //    required: true
    }
});

//Define the model for User
var User;
if(mongoose.models.User)
    User = mongoose.model('User');
else
    User = mongoose.model('User', UserSchema);

//Export the User Model
module.exports = User;

userController ： - 此檔案包含使用者 signUp 的功能

var User = require('../models/user');
var crypto = require('crypto');

//Controller for User
var UserController = {

    //Create a User
    create: function(req, res){
        var repassword = req.body.repassword;
        var password = req.body.password;
        var userEmail = req.body.email;

        //Check if the email address already exists
        User.find({"email": userEmail}, function(err, usr){
            if(usr.length > 0){
                //Email Exists
                
                res.json('Email already exists');
                return;
            }
            else
            {
                //New Email
                
                //Check for same passwords
                if(password != repassword){
                    res.json('Passwords does not match');
                    return;
                }

                //Generate Password hash based on sha1
                var shasum = crypto.createHash('sha1');
                shasum.update(req.body.password);
                var passwordHash = shasum.digest('hex');

                //Create User
                var user = new User();
                user.name = req.body.name;
                user.email = req.body.email;
                user.password = passwordHash;
                user.dob = Date.parse(req.body.dob) || "";
                user.gender = req.body.gender;

                //Validate the User
                user.validate(function(err){
                    if(err){
                        res.json(err);
                        return;
                    }else{
                        //Finally save the User
                        user.save(function(err){
                            if(err)
                            {
                                res.json(err);
                                return;
                            }
                
                            //Remove Password before sending User details
                            user.password = undefined;
                            res.json(user);
                            return;
                        });
                    }
                });
             }
        });
    }

}

module.exports = UserController;

userRoutes.js ： - 這是 userController 的路由

var express = require('express');
var UserController = require('../controllers/userController');

//Routes for User
var UserRoutes = function(app)
{
    var router = express.Router();

router.route('/users')
    .post(UserController.create);

return router;

}

module.exports = UserRoutes;

上面的例子可能看起來太大但是如果 node.js 的初學者嘗試通過這種方法嘗試通過這一點會覺得它很容易且非常有用。