backbone.js - 未捕获的类型错误：对象 [object Object] 没有方法“调用”backbone.js

Question

这发生在我对模型进行编辑之后。它发送请求（我在 chrome 中打开了它，我看到它在外部记录）但是当它得到响应时，会弹出该错误。

这是我的模型：

Investments.EmergingModel = Backbone.Model.extend
  idAttribute: "id_number"

  initialize: ->
    _.bindAll this

  url: ->
    u = "#{Investments.Options.rootUrl}fleets/#{Investments.Options.fleet}/emerging_technology_vehicles"
    u = "#{Investments.Options.rootUrl}fleets/#{Investments.Options.fleet}/emerging_technology_vehicles/#{this.id}" if this.id
    u

如果您需要更多代码，请告诉我..