Ruby on rails 嵌套模型的Activeadmin

您好，我正在尝试构建一个应用程序，其中我正在使用Activeadmin搜索结果模型。搜索结果模型用于保存付费客人信息。每个PG都有共享类型（如个人、单人、双人）和每个共享类型的价格。我总共创建了三个模型，分别名为搜索结果、共享类型和价格表。 我想创建一个activeadmin表单来保存PG信息以及共享类型和价格表。 在seach_result.rb中

class SearchResult < ActiveRecord::Base
    has_attached_file :pg_images,:styles => {
      :thumb => "100x100#",
      :small  => "150x150>",
      :medium => "400x200" }, default_url: "/images/missing.png"
  validates_attachment :pg_images,
  content_type: { content_type: ["image/jpeg", "image/gif", "image/png"] }
  has_many :sharing_types ,dependent: :destroy
  accepts_nested_attributes_for :sharing_types, allow_destroy: true
end

---

我在这一点上被绊倒了。有人能帮我完成这项任务吗。

有人能帮我。。

class SharingType < ActiveRecord::Base
    belongs_to :search_result
    has_many :pricelists ,dependent: :destroy 
    accepts_nested_attributes_for :pricelists, allow_destroy: true
end

class Pricelist < ActiveRecord::Base
    belongs_to :sharing_type
end

ActiveAdmin.register SearchResult do


 permit_params :gender,:pgname,:pgadress,:pgrent,:secdeposit,:postdate,:image,:pg_images ,:sharing_type,:food_type,:meals_type,:location_cd ,:location_name
form multipart: true  do |f|
  f.inputs 'PG Details ' do


    f.input :gender, :required => false , :label => "Gender"
    f.input :pgname, :required => false, :label => "PG Name"
    f.input :pgadress, :required => false, :label => "PG Address"
    f.input :pgrent, :required => false, :label => "PG Rent"
    f.input :secdeposit, :required => false, :label => "PG Deposit"
    f.input :postdate, :required => false, :label => "PG Post Date"
    f.input :location_cd, :required => false, :label => "Location Code"
    f.input :location_name, :required => false, :label => "Location Name"
    f.input :food_type, :required => false, :label => "Food Type"
    f.input :meals_type, :required => false, :label => "Meals Type"
    f.input :pg_images, :required => false, :as => :file
end

  f.inputs 'Sharing_types' do |d|
      d.input :typename,:as => :select , :collection => SharingType.all
    end
  f.actions
 end
 end