REST架构网站改写:前端MVC
Coenraets分享了自己开发的一个Single Page Restful网站(http://coenraets.org/blog/2012/10/nodecellar-sample-application-with-backbone-js-twitter-bootstrap-node-js-express-and-mongodb)。他利用多种不同的前后端技术改写了这个项目,大致有以下这些:
CSS库 - Bootstrap;
前端MVC - Backbone.js,Angular.js;
Web框架 - Express.js(Node.js)、PHP、Java ;
数据库 - MongoDB、MySQL。
其中,我最感兴趣Angular + Express + MongoDB的组合,Coenraets恰好没有实现;再加之Angular新版本改进颇大,尤其是Coenraets的实现没有使用angular.modular,所以我做了些改写,核心代码如下。
Express Server部分:监听和响应客户端HTTP请求。
1 app.get('/wines', wine.findAll);
2 app.get('/wines/:id', wine.findById); //retrieve
3 app.post('/wines', wine.addWine);//create
4 app.put('/wines/:id', wine.updateWine);//update
5 app.delete('/wines/:id', wine.deleteWine);//delete
前端MVC架构:响应用户请求,完成大部分UI逻辑
controller.js
1 angular.module('controller', ['service']).
2 config(function($routeProvider) {
3 $routeProvider.when('/wines', {templateUrl:'tpl/welcome.html'}).
4 when('/addWine',{templateUrl:'tpl/wine-details.html', controller:AddWineCtrl}).
5 when('/wines/:wineId', {templateUrl:'tpl/wine-details.html', controller:WineDetailCtrl}).
6 otherwise({redirectTo:'/wines'});
7 });
8
9 function WineListCtrl($scope, Wine) {
10 Wine.query(function(wines) {
11 $scope.wines = wines;
12 });
13 }
14
15 function AddWineCtrl($scope, $location,Wine) {
16 // POST /wines
17 $scope.saveWine = function() {
18 Wine.save($scope.wine, function() {
19 $location.path("/wines");
20 });
21 };
22 }
23
24 function WineDetailCtrl($scope, $location, $routeParams, Wine) {
25
27 // GET /wines/id
28 Wine.get({wineId: $routeParams.wineId}, function(wine){
29 $scope.wine = wine;
30 });
31
32 // PUT /wines/id
33 $scope.saveWine = function () {
34 Wine.update({wineId: $routeParams.wineId},
35 $scope.wine, function() {
36 $location.path("/wines");
37 });
38 };
39
40 //DELETE /wines/id
41 $scope.deleteWine = function () {
42 Wine.delete({wineId: $routeParams.wineId}, function() {
43 $location.path("/wines");
44 });
45 };
46 }
service.js
1 angular.module('service', ['ngResource']).
2 factory('Wine', function($resource) {
3 return $resource('/wines/:wineId', {}, {
4 update: {method:'PUT'}
5 });
6 });
整个项目前后端完全隔离,通过Restful协议通信;Express框架在Node.js中的地位类似于Django之于Python或Rails之于Ruby,新版Myspace是利用它开发的;Angular.js能大幅度减轻前端MVC工作量,直接进行DOM操纵而无需jQuery。
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