Spine Ajax update model handle

spine.ajax.update.howto.coffee

class User extends Spine.Model
  @configure 'User', 'name'
  @extend Spine.Model.Ajax
  @url: '/save'

user = new User(name: 'test')
# 设定/save直接返回 {flag: 0}
user.save()

User.bind 'update', (item) ->
  # Ajax请求完成之后update，item里面没有flag属性
  console.log(item)