Question

我有一个模型地址，如下面的

class Address
  include Mongoid::Document

  field :line1
  field :city
  # more fields like this

  embedded_in :user, :inverse_of => :permanent_address
  embedded_in :user, :inverse_of => :current_address
  embedded_in :college, :inverse_of => :address
end

有大学和用户的模型嵌入地址

class College
  include Mongoid::Document

  references_many :users
  embeds_one :address

  # some fields and more code
end


class User
  include Mongoid::Document

  referenced_in :college, :inverse_of => :users  

  embeds_one :permanent_address, :class_name => "Address"
  embeds_one :current_address, :class_name => "Address"

  # fields and more code
end

我在上面的设置中遇到了一些问题。我使用单一表单来询问当前和永久地址以及更多信息，但只有current_address被保存，而且我在permanent_address中填充的数据也是如此。

Parameters: 
  {"utf8"=>"✓",
   "authenticity_token"=>"KdOLvzmKyX341SSTc1SoUG6QIP9NplbAwkQkcx8cgdk=", 
   "user"=> {
     "personal_info_attributes"=>{...},
     "nick_names_attributes"=>{...}, 
     "current_address_attributes"=>{
        "line1"=>"", 
        "area"=>"", 
        "country"=>"USA", 
        "postal_code"=>"sd", 
        "city"=>"", 
        "state"=>"", 
        "landmark"=>"", 
        "id"=>"4d891397932ecf36a4000064"
     }, 
     "permanent_address_attributes"=>{
       "line1"=>"", 
       "area"=>"asd", 
       "country"=>"india", 
       "postal_code"=>"", 
       "city"=>"", 
       "state"=>"", 
       "landmark"=>""
     }, 
     "commit"=>"Submit", "id"=>"4d8903d6932ecf32cf000001"}
MONGODB alma_connect['users'].find({:_id=>BSON::ObjectId('4d8903d6932ecf32cf000001')})
MONGODB alma_connect['users'].update({"_id"=>BSON::ObjectId('4d8903d6932ecf32cf000001')}, 
  {"$set"=>{
    "current_address"=>{
      "line1"=>"", 
      "area"=>"asd", 
      "country"=>"india", 
      "postal_code"=>"", 
      "city"=>"", 
      "state"=>"", 
      "landmark"=>"", 
      "_id"=>BSON::ObjectId('4d8916e9932ecf381f000005')}}})

我不确定这是否是我在这里做错了还是有其他问题。我正在使用Rails 3.0.4和MongoID 2.0.0.rc.7

更新

我升级到mongoid 2.0.1并将我的用户更改为包含地址选项的反转。

class User
  include Mongoid::Document

  referenced_in :college, :inverse_of => :users  

  embeds_one :permanent_address, :class_name => "Address", :inverse_of => :permanent_address
  embeds_one :current_address, :class_name => "Address", :inverse_of => :current_address

  # fields and more code
end

我知道名称的反转没有意义，但这里的要点只是为了使它们不同，或者如果你的嵌入类中的关系有良好的名称（如：current_user，：permanent_user），你应该使用反转的。

Answer 1

来自Mongoid docs

当子嵌入文档可以属于多种类型的父文档时，您可以通过在父项上的定义和子项上的多态选项中添加as选项来告诉Mongoid支持这一点。在子对象上，将存储一个指示父类型的附加字段。

class Band
  include Mongoid::Document
  embeds_many :photos, as: :photographic
  has_one :address, as: :addressable
end

class Photo
  include Mongoid::Document
  embedded_in :photographic, polymorphic: true
end

class Address
  include Mongoid::Document
  belongs_to :addressable, polymorphic: true
end

Answer 2

对我来说很好看。我有类似的设置，它按预期工作。

MongoID，将文档嵌入多个文档中

2 个答案: