Question

我有两个模型，商业和地址之间的关联。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_address
end

class Address < ActiveRecord::Base
    belongs_to :business
end

此协会适用于我的目的。当我使用：

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

不显示任何内容，只显示空字段集。

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

Answer 1

在控制器中写入此操作（我认为new）

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

或以您的格式@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

Answer 2

form.fields_for为@ business.registered_adress中的每个对象呈现其块。如果您的数组是空的，则无显示。

您可以在控制器上编写：

@bussines.registered_address.new

然后应用程序将显示所有表单

希望这有帮助

accepts_nested_attributes_for停止我的子表单呈现？

2 个答案: