当通过轮询端点更新模型时，我在触发更改事件时遇到了一些麻烦。我非常确定这是因为集合实际上没有更新。我正在使用Backbone 0.9.9中的新选项（update: true），它试图智能地更新集合，而不是完全重置集合。
当我在updateClientCollection函数的末尾插入console.log(this)时，当通过setInterval调用updateClientCollection时，this.clientCollection似乎没有更新。但是，我确实看到终结点正在被轮询，并且终结点正在为客户端返回新的不同值。

managementApp.ClientListView = Backbone.View.extend({
  className: 'management-client-list',
  template: _.template( $('#client-list-template').text() ),

  initialize: function() {
    _.bindAll( this );
    this.jobId = this.options.jobId
    //the view owns the client collection because there are many client lists on a page
    this.clientCollection = new GH.Models.ClientStatusCollection();
    this.clientCollection.on( 'reset', this.addAllClients );
    //using the initial reset event to trigger this view's rendering
    this.clientCollection.fetch({
      data: {'job': this.jobId}
    });
    //start polling client status endpoint every 60s
    this.intervalId = setInterval( this.updateClientCollection.bind(this), 60000 );
  },

  updateClientCollection: function() {
    //don't want to fire a reset as we don't need new view, just to rerender
    //with updated info
    this.clientCollection.fetch({
      data: {'job': this.jobId},
      update: true,
      reset: false
    });
  },

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

  addOneClient: function( client ) {
    var view = new managementApp.ClientView({model: client});
    this.$el.find( 'ul.client-list' ).append( view.render().el );
  },

  addAllClients: function() {
    if (this.clientCollection.length === 0) {
      this.$el.find( 'ul.client-list' ).append( 'No clients registered' );
      return;
    } 
    this.$el.find( 'ul.client-list' ).empty();
    this.clientCollection.each( this.addOneClient, this );
  }
});

managementApp.ClientView = Backbone.View.extend({
  tagName: 'li',
  className: 'management-client-item',
  template: _.template( $('#client-item-template').text() ),

  initialize: function() {
    _.bindAll( this );
    this.model.on( 'change', this.render );
  },

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