您如何接受使用继承的模型的嵌套属性?
Rails 3.2,Mongoid 3.1
class User
include Mongoid::Document
include Mongoid::Timestamps
field :name, type: String
attr_accessible :name
embeds_many :cards
attr_accessible :cards_attributes
accepts_nested_attributes_for :cards
end
用户类嵌入了许多类型的卡片。
class Card
include Mongoid::Document
include Mongoid::Timestamps
embedded_in :user
end
class HealthCard < Card
field :number, type: String
attr_accessible :expiry_date, :number
end
class StudentCard < Card
field :expiry_date, type: Date
field :number, type: String
field :dept, type: String
attr_accessible :expiry_date, :number, :dept
end
使用下面的表格
= form_for @user do |user_form|
= user_form.fields_for :health_cards, @health_card do |hc_form|
= hc_form.text_field :number
= user_form.submit 'Next'
在提交时,我观察以下参数
{"user"=>{"health_cards"=>{"number"=>"6564 - 082 - 649 - AM"} }, "utf8"=>"✓", "_method"=>"put", "authenticity_token"=>"C0DIKNbccfDQ=", "commit"=>"Next", "action"=>"update", "controller"=>"person_steps"}