Backbone.js collection.url()用法及代碼示例

Backbone.js 集合 url 方法用於創建集合的實例並顯示資源所在的位置。

用法:

collection.url()

我們以部署url方法為例。

看這個例子：

<!DOCTYPE html>
   <head>
      <title>URL Collection Example</title>
         <script src="https://code.jquery.com/jquery-2.1.3.min.js" type="text/javascript"></script>
         <script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.2/underscore-min.js" type="text/javascript"></script>
         <script src="https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.1.2/backbone-min.js" type="text/javascript"></script>
   </head>
   <body>
      <script type="text/javascript">
         var MyModel = Backbone.Model.extend({});  ////'MyModel' is a model name

         //The 'MyCollection' is an instance of the collection
         var MyCollection = Backbone.Collection.extend({
            model:MyModel   //The model 'MyModel' is specified by overriding the "model" property
         });

         //The model "MyBlog" contains default values for 'user' and 'myposts' attributes
         var MyBlog = Backbone.Model.extend({
            defaults:{
            user:null,
            myposts:[]
         },
         initialize:function () {
            var myval = this;

            //Model 'MyModel' gets the 'user' and 'myposts' from the model 'MyBlog' by referring to the current object
            this.MyModel = new MyModel(this.get('user'));
            this.posts = new MyCollection(this.get('myposts'));
            this.posts.url = function () {
               return myval.url() + '/myposts';
            };
         },

         //It enables the url() function by using the id attribute to generate the URL as "/MyBlog/50/myposts/26"
         urlRoot:'/MyBlog/'
         });
         var attributes = {
            id:50,
            myposts:[{id:26}]
         }

         //The model "MyBlog" will access the attributes and display the url using 'url()' function
         val = new MyBlog(attributes);
         val.posts.each(function (MyModel) {
            document.write("The url pattern is:",MyModel.url());
         });
         </script>
         </body>
      </html>

輸出：

將上述代碼保存在 url.html 文件中，然後在新瀏覽器中打開此文件。

相關用法

注：本文由純淨天空篩選整理自 Backbone.js collection.url()。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。