練習使用RESTful Web Servicet技術打造一個簡單書藉管理Web應用程式。
REST (Reprsentational State Transfer)是軟體構設計風格，並不是標準。RESTful Web Services是使用HTTP協定，並遵循REST原則的Web服務。
這次實作會用到express、jade、mongoose等packages，另外，superagent和expect.js是用來測試時使用。
{
"name": "NodeJSTut",
"version": "0.0.1",
"description": "NodeJS Tutorial for RESTful",
"keywords": [
"OpenShift",
"Node.js",
"RESTful"
],
"author": {
"name": "DonaldIsFreak"
},
"engines": {
"node": ">= 0.10.x",
"npm": ">= 1.0.0"
},
"dependencies": {
"express" : "3.3.8",
"jade" : "*",
"mongoose" : ">=0.0.1"
},
"devDependencies": {
"superagent" : ">=0.15.0",
"expect.js": ">=0.1.0"
},
"bundleDependencies": [],
"private": true,
"main": "server.js"
}先確定好MongoDB有安裝成功，建立Book Model，目前只有三個欄位，分別是title、isbn，以及description。 (_id是MongoDB自動產生)
var mongoose = require("mongoose");
var bookSchema = new mongoose.Schema({
title : String,
isbn : String,
description: String
});
module.exports = mongoose.model('Book',bookSchema);| 功能 | URL | HTTP Method | Request | Response |
|---|---|---|---|---|
| 新增 | /books | POST | Book JSON | -- |
| 刪除 | /books/:id | DELETE | -- | -- |
| 修改 | /books/:id | PUT | Book JSON | -- |
| 查詢 | /books/:id | GET | -- | Book JSON |
| 列表 | /books | GET | -- | Book JSON |
- server.js
#!/bin/env node
var express = require('express'),
routes = require('./routes'),
apis = require('./routes/api'),
http = require('http'),
path = require('path'),
mongoose = require('mongoose');
// connect MongoDB
mongoose.connect(process.env.OPENSHIFT_MONGODB_DB_URL+'nodejstut');
var app = express();
// all environments
app.set('port', process.env.OPENSHIFT_NODEJS_PORT || 8080);
app.set('ip',,process.env.OPENSHIFT_NODEJS_IP || '127.0.0.1');
app.set('views', __dirname + '/views');
app.set('view engine', 'jade');
app.use(express.favicon());
app.use(express.logger('dev'));
app.use(express.cookieParser());
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(app.router);
app.use(express.static(path.join(__dirname, 'public')));
// development only
if ('development' == app.get('env')) {
app.use(express.errorHandler());
}
http.createServer(app).listen(app.get('port'),app.get('ip'), function(){
console.log('Express server listening on port ' + app.get('port'));
});按照上面的RESTful API規格，主要負責MongoDB的CRUD。
app.all('/*',function(req,res,next){
res.header('Access-Control-Allow-Origin','*');
res.header('Access-COntrol-Allow-Headers','X-Requested-With');
next();
});
app.get('/',routes.index);
app.get('/books',apis.findAll);
app.get('/books/:id',apis.findByID);
app.post('/books',apis.post);
app.put('/books/:id',apis.updates);
app.del('/books/:id',apis.removeByID);-
routes/api.js
-
GET /books傳回全部Book JSON。exports.findAll = function(req,res,next){ Book.find(function(err,books){ res.send({book:books}); }); };
-
GET /books/:id以id為查詢條件，傳回單筆Book JSON。exports.findByID = function(req,res,next){ Book.findOne({_id:req.params.id},function(err,book){ res.send({book:book}); }); };
-
POST /books取得Book資料後寫入MongoDB。exports.post = function(req,res){ var book = new Book({title:req.body.book.title,isbn:req.body.book.isbn,description:req.body.book.description}); book.save(function(err,book){ res.send({book:book}); }); };
-
PUT /books/:id修改:id的Book資料 。exports.updates = function(req,res,next){ Book.update({_id:req.params.id},{$set:{description:req.body.book.description}},function(err,numberAffected,raw){ if (err) console.log(err); res.send(200); }); };
-
DELETE /books/:id刪除:id的Book資料exports.removeByID = function(req,res,next){ Book.remove({_id:req.params.id},function(err){ if (err) next(err); res.send(200); }); };
-
- Application
App = Ember.Application.create({LOG_TRANSITIONS: true});- Controller
App.BooksController = Ember.ArrayController.extend({
actions: {
add: function(){
var title = this.get('newTitle');
var isbn = this.get('newISBN');
var description = this.get('newDesc');
var book = this.store.createRecord('book',{
title : title,
isbn : isbn,
description : description
});
book.save();
this.set('newTitle','');
this.set('newISBN','');
this.set('newDesc','');
}
}
});
App.BookController = Ember.ObjectController.extend({
isEditing: false,
isRevming: false,
actions: {
editDesc: function(){
this.set('isEditing',true);
},
remove: function(){
this.toggleProperty('isRemoving');
},
update: function(){
this.set('isEditing',false);
this.get('model').save();
},
confirmRemove: function(){
var books = this.get('model');
books.deleteRecord();
books.save();
this.set('isRemoving',false);
},
cancelRemove: function(){
this.set('isRemoving',false);
}
}
});- Model
App.Book = DS.Model.extend({
isbn : DS.attr('string'),
title : DS.attr('string'),
description: DS.attr('string')
});
DS.RESTAdapter.reopen({
host: 'http://localhost:8080'
});
App.Adapter = DS.RESTAdapter.extend({
serialize: 'App.BookSerializer'
});
App.BookSerializer = DS.RESTSerializer.extend({
primaryKey: '_id'
});
App.Store = DS.Store.extend({
adapter: 'App.Adapter'
});- Router
App.Router.map(function(){
this.route('books',{ path : '/'});
this.route('detail',{ path : '/detail'});
});
App.BooksRoute = Ember.Route.extend({
model: function(params){
return this.store.find('book');
}
});
App.DetailRoute = Ember.Route.extend({
renderTemplate: function(controller){
this.render('books/detail');
}
});- View
App.EditDescView = Ember.TextField.extend({
didInsertElement: function(){
this.$().focus();
}
});
Ember.Handlebars.helper('edit-desc',App.EditDescView);