Django+Tastypie作后端,RequireJS+Backbone作前端的TodoMVC
一、配置好环境
接着前一篇的例子,顺带测试一下已下载下来example里面的backbone_require的例子
注意:直接本地用backbone.localStorage插件运行TodoMVC会报错,因为RequireJS工作时,加载js文件及template文件是异步加载,这就好比ajax异步请求需要涉及到跨域的问题,文件必须要在同一下域下才能被异步加载。
因此,直接把所有文件放到上篇文件的static(E:\project\tastypie\mysite\blog\static)目录下,把django启动一下就可以了,用backbone.localStorage本地运行,在浏览器输入http://localhost:8000/static/index.html 此时应该可以正常运行TodoMVC了
二、把backbone.localStorage切换到本地连接tastypie的api接口的url
1)改backbone的model文件与collection文件
E:\project\tastypie\mysite\blog\static\todos\js\models\todo.js 添加urlRoot为tastypie的api接口
app.Todo = Backbone.Model.extend({ 。。。 urlRoot: ‘/api/v1/todo/‘, 。。。 });
改E:\project\tastypie\mysite\blog\static\todos\js\collections\todos.js
/*global define */ define([ ‘underscore‘, ‘backbone‘, //‘backboneLocalstorage‘, //1,这个模块不需要用到,注释掉 ‘models/todo‘ ], function (_, Backbone,Todo) {//1,跟据RequireJS规范这里把store删掉 ‘use strict‘; var TodosCollection = Backbone.Collection.extend({ // Reference to this collection‘s model. model: Todo, // Save all of the todo items under the `"todos"` namespace. //localStorage: new Store(‘todos-backbone‘), //2,这里也不需要用到 url: ‘/api/v1/todo/‘, //3,配置api接口,跟上篇一样 parse: function (response) {//4,取到objects真正数据,把meta数据过滤掉 return response.objects; }, // Filter down the list of all todo items that are finished. completed: function () { return this.where({completed: true}); }, // Filter down the list to only todo items that are still not finished. remaining: function () { return this.where({completed: false}); }, // We keep the Todos in sequential order, despite being saved by unordered // GUID in the database. This generates the next order number for new items. nextOrder: function () { return this.length ? this.last().get(‘id‘) + 1 : 1;//5,把order改为id,因为我们数据库里面是自动生成了递增的id默认是0,1,2... }, // Todos are sorted by their original insertion order. comparator: ‘order‘ //无影响切换过来后没用到 }); return new TodosCollection(); });
2)最后E:\project\tastypie\mysite\blog\static\js\views\app.js 把appview文件中的order改为id
// Generate the attributes for a new Todo item. newAttributes: function () { return { title: this.$input.val().trim(), id: Todos.nextOrder(), completed: false }; },
搞定,可以测试一下!http://localhost:8000/static/index.html 此时应该可以正常运行TodoMVC了,数据是由sqlLite提供了!
郑重声明:本站内容如果来自互联网及其他传播媒体,其版权均属原媒体及文章作者所有。转载目的在于传递更多信息及用于网络分享,并不代表本站赞同其观点和对其真实性负责,也不构成任何其他建议。