具有多态性的嵌套属性有一个模型

我在rails 2.3.5中使用accepts_nested_attributes_for和has_one多态模型

class Address < ActiveRecord::Base
  attr_accessible :city, :address1, :address2
  belongs_to :addressable, :polymorphic => true
  validates_presence_of :address1, :address2, :city
end

class Vendor < ActiveRecord::Base
  attr_accessible :name, :address_attributes
  has_one  :address, :as => :addressable, :dependent => :destroy
  accepts_nested_attributes_for :address
end

这是视图:

- form_for @vendor do |f|
  = f.error_messages
  %p
    = f.label :name
    %br
    = f.text_field :name
  - f.fields_for :address_attributes do |address|
    = render "shared/address_fields", :f => address
  %p
    = f.submit "Create"

这是部分共享/地址字段.html.haml

%p
  = f.label :city
  %br= f.text_field :city
  %span City/Town name like Dharan, Butwal, Kathmandu, ..
%p
  = f.label :address1
  %br= f.text_field :address1
  %span City Street name like Lazimpat, New Road, ..
%p
  = f.label :address2
  %br= f.text_field :address2
  %span Tole, Marg, Chowk name like Pokhrel Tole, Shanti Marg, Pako, ..

这是控制器: 类VendorsController<ApplicationController

  def new
    @vendor = Vendor.new
  end

  def create
    @vendor = Vendor.new(params[:vendor])
    if @vendor.save
      flash[:notice] = "Vendor created successfully!"
      redirect_to @vendor
    else
      render :action => 'new'
    end
  end
end

问题是,当我填写所有文件时,记录将按预期保存在两个表上。

但是,当我只将name和city或address1归档时,验证工作正常,显示错误消息,但我在city或address1中输入的值不会持久化,也不会显示在address表单字段中?

编辑操作也是如此。

虽然记录已保存,但地址不会显示在编辑表单上。只显示客户机模型的名称。