'add'事件在取出時似乎沒有觸發

Question

我開始使用Backbone.js，但似乎無法獲得最簡單的概念驗證工作。我有以下代碼：

$(function() { 

    var Contact = Backbone.Model.extend({ 

     url: 'contacts.txt' 

    }); 

    var ContactList = Backbone.Collection.extend({ 

     model: Contact, 
     url: 'contacts.txt' 

    }); 

    var Contacts = new ContactList(); 

    var ContactView = Backbone.View.extend({ 

     tagName: 'li', 

     template: _.template($('#contact-template').html()), 

     initialize: function() { 
      _.bindAll(this); 
     }, 

     render: function() { 
      this.$el.html(this.template(this.model.toJSON())); 
      return this; 
     } 

    }); 

    var AppView = Backbone.View.extend({ 

     el: '#contacts', 

     initialize: function() { 
      Contacts.bind('add', this.addOne, this); 
      Contacts.fetch(); 
     }, 

     addOne: function(Contact) { 
      var view = new ContactView({model: Contact}); 
      this.$el.append(view.render().el); 
     } 

    }); 

    var app = new AppView(); 

}); 

文件contacts.txt包含一個簡單的JSON結構，它加載罰款根據Chrome瀏覽器：

[{"from_acct_id": 5, "ct": 0, "from_display_nm": "Name 1", "to_acct_id": 1}, 
{"from_acct_id": 3, "ct": 1, "from_display_nm": "Name 2", "to_acct_id": 1}, 
{"from_acct_id": 2, "ct": 0, "from_display_nm": "Name 3", "to_acct_id": 1}, 
{"from_acct_id": 4, "ct": 1, "from_display_nm": "Name 4", "to_acct_id": 1}] 

無論出於何種原因，addOne()功能綁定到add事件AppView永遠不會被調用。可能會出現什麼問題？

Answer 1

Backbone集合的獲取調用將觸發重置事件。代替重置綁定。

http://documentcloud.github.com/backbone/#Collection-fetch