2
關於使用mongoid通過嵌套屬性進行質量分配的問題。STI和mongoid中的嵌套屬性質量分配?
實施例:
require 'mongoid'
require 'mongo'
class Company
include Mongoid::Document
has_many :workers,as: :workable, autosave: true
accepts_nested_attributes_for :workers
end
class Worker
include Mongoid::Document
field :hours, type: Integer, default: 0
belongs_to :workable, polymorphic: true
end
class Manager < Worker
include Mongoid::Document
field :order
#attr_accessible :order
attr_accessor :order
validates_presence_of :order
end
Mongoid.configure do |config|
config.master = Mongo::Connection.new.db("mydb")
end
connection = Mongo::Connection.new
connection.drop_database("mydb")
database = connection.db("mydb")
params = {"company" => {"workers_attributes" => {"0" => {"_type" => "Manager","hours" => 50, "order" => "fishing"}}}}
company = Company.create!(params["company"])
company.workers.each do |worker|
puts "worker = #{worker.attributes}"
end
此輸出以下:
worker = {"_id"=>BSON::ObjectId('4e8c126b1d41c85333000002'), "hours"=>50, "_type"=>"Manager", "workable_id"=>BSON::ObjectId('4e8c126b1d41c85333000001'), "workable_type"=>"Company"}
如果註釋線
attr_accessible :order
被註釋在我代替得到以下:
WARNING: Can't mass-assign protected attributes: _type, hours
worker = {"_id"=>BSON::ObjectId('4e8c12c41d41c85352000002'), "hours"=>0, "_type"=>"Manager", "workable_id"=>BSON::ObjectId('4e8c12c41d41c85352000001'), "workable_type"=>"Company"}
請注意,小時數值未從默認值更新。
問題,爲什麼attr_accessible中的註釋搞亂了我的文檔的持久性。此外,我對Rails還很陌生,但我並不完全理解attr_accessible,但我知道我需要通過我的視圖來填寫字段。如何使用attr_accessible行註釋保留我的文檔?
感謝
這完全有效,非常感謝有這麼一段時間的這個問題,並不知道在哪裏看到現在。 – GTDev
不用擔心。在回答問題時,我總是嘗試添加相關的API文檔。他們一直是尋找信息的好地方。 – janders223