ruby-on-rails – accepts_nested_attributes_for停止我的子表单呈现？

概述我有两个模型,业务和地址之间的关联.企业有registered_address的地方.我这样做了如下. class Business < ActiveRecord::Base has_one :registered_address, :class_name => "Address", :foreign_key => :business_registered_address_id 我有两个模型,业务和地址之间的关联.企业有registered_address的地方.我这样做了如下.

class Business < ActiveRecord::Base      has_one :registered_address,:class_name => "Address",:foreign_key => :business_registered_address_ID    accepts_nested_attributes_for :registered_addressendclass Address < ActiveRecord::Base    belongs_to :businessend

这个协会适用于我的目的.当我使用以下方式渲染表单时：

= form_for @business do |form|  = form.inputs :name => "Registered address" do    = form.fIElds_for :registered_address do |address|      = address.input :postcode      = address.input :line_1      = address.input :line_2      = address.input :line_3      = address.input :town      = address.input :county

没有显示任何内容,只是一个空的字段集.

当我在Business模型中注释掉accepts_nested_attributes_for行时,它会正确显示(但不保存)所有字段.

谁能看到我做错了什么？

谢谢

@H_403_28@解决方法 在控制器中写入此 *** 作(我认为是新的)

def new  @business = Business.new  @business.build_registered_address  ...end

或以您的形式@ business.registered_address.new

= form_for @business do |form|  = form.inputs :name => "Registered address" do    = form.fIElds_for :registered_address,@business.registered_address.new do |address|      = address.input :postcode      = address.input :line_1      = address.input :line_2      = address.input :line_3      = address.input :town      = address.input :county

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