查找後的Mongoid文件持久性

Question

我無法將我的文檔保存爲mongoid。我在我的控制器下面的代碼片段：

params[:user][:residence_attributes][:locations_attributes].each do |num,location_attributes| 
    zipcode = Location.find(location_attributes[:id]) 

    if !zipcode.update_attributes(location_attributes) 
    puts "fail" 
    fail = true 
    end 

    puts "zipcode again #{zipcode}" 
    puts "zipcode number #{zipcode.number}" 
    puts "zipcodes = #{Zipcode.count}" 
    zipcode = Zipcode.find(@user.residence.locations[0].id) 
    puts "zipcode again #{zipcode}" 
    puts "zipcode number #{zipcode.number}" 
    puts "zipcodes = #{Zipcode.count}" 
    zipcode = Zipcode.find(@user.residence.locations[0].id) 
    puts "zipcode again #{zipcode}" 
    puts "zipcode number #{zipcode.number}" 
    puts "zipcodes = #{Zipcode.count}" 
end 

而且它產生的輸出如下：

zipcode again #<Zipcode:0x000000063826a0> 
zipcode number 11210 
zipcodes = 1 
zipcode again #<Zipcode:0x00000006348860> 
zipcode number 
zipcodes = 1 
zipcode again #<Zipcode:0x00000006340ef8> 
zipcode number 
zipcodes = 1 

所以，問題是爲什麼在郵編ID更改當我找到這個文件的第二和第三時間？

這是一個問題，因爲文檔不會保留。

我有以下型號：

class Zipcode < Location 
    include Mongoid::Document 
    attr_accessible :number 
    attr_accessor :number 

    validates_presence_of :number 
    validate :check_zipcode 
end 

class Location 
    include Mongoid::Document 

    attr_accessible :latitude, :longitude 
    belongs_to :locatable, polymorphic: true 
end 

class UserResidence 
    include Mongoid::Document 

    has_many :locations, as: :locatable 

    embedded_in :user, :inverse_of => :residence 

    attr_accessible :locations_attributes 
    accepts_nested_attributes_for :locations, autosave: true 

    #validates_presence_of :locations 
    #validates :locations, :length => {:minimum => 1} 
end 

感謝

Answer 1

你保存文檔？

嘗試自動保存設置爲true

見： http://mongoid.org/docs/upgrading.html （頁面上爲自動保存搜索）

Answer 2

按需要設置autosave: true上has_many :locationshttp://mongoid.org/docs/relations/nested_attributes.html。

has_many :locations, as: :locatable, autosave: true 
accepts_nested_attributes_for :locations