Ruby on rails 5 rails中Virtus的默认值

我正在使用virtus（1.0.5）和rails（5.0.2）。我使用Virtus作为模型，因为它基于所访问的页面进行验证

我的组织模式如下

class Organization < ApplicationRecord
  validates :name, presence: true
end

不幸的是，上面的代码不起作用

Loading development environment (Rails 5.0.2)
2.3.0 :001 > of = OrganizationProfileForm.new(Organization.last)
Organization Load (0.6ms)  SELECT  "organizations".* FROM "organizations" ORDER BY "organizations"."id" DESC LIMIT $1  [["LIMIT", 1]]
=> #<OrganizationProfileForm:0x007f9d61edd6a8 @organization=# <Organization id: 1, name: "Some name", call_center_number: "4892374928", created_at: "2017-03-29 09:35:22", updated_at: "2017-03-29 09:37:59">>
2.3.0 :002 > of.call_center_number
=> nil

加载开发环境（Rails 5.0.2）
2.3.0:001>of=OrganizationProfileForm.new（Organization.last）
组织加载（0.6ms）选择“组织”。*从“组织”中按“组织”排序。“id”描述限制$1[[“限制”，1]]
=> #
2.3.0:002>呼叫中心号码
=>零

尝试删除行

private

，因为这可能会阻止对方法

组织呼叫中心号码的调用。上的默认值示例使用公共实例方法，而不是私有实例方法

请参阅：
我们需要在initialize方法中调用super（）

Loading development environment (Rails 5.0.2)
2.3.0 :001 > of = OrganizationProfileForm.new(Organization.last)
Organization Load (0.6ms)  SELECT  "organizations".* FROM "organizations" ORDER BY "organizations"."id" DESC LIMIT $1  [["LIMIT", 1]]
=> #<OrganizationProfileForm:0x007f9d61edd6a8 @organization=# <Organization id: 1, name: "Some name", call_center_number: "4892374928", created_at: "2017-03-29 09:35:22", updated_at: "2017-03-29 09:37:59">>
2.3.0 :002 > of.call_center_number
=> nil