未捕获的TypeError：对象[object Object]没有方法'call'hiephical.js

Question

在我对模型进行编辑后会发生这种情况。它发送请求（我已经在chrome中打开了，我看到它在外部记录）但是当它得到响应时，会弹出该错误。

这是我的模特：

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。