MongoID，嵌入在多个文档

问题描述：

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

有机型学院和用户其嵌入地址

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

我得到的一些问题与上面的设置。我使用单一表单来询问当前和永久地址以及一些更多信息，但只有current_address正在保存，而且我也将数据填充到permanent_address中。

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')}}})

我不确定这是我做错了还是还有其他一些问题。我使用Rails 3.0.4和MongoID 2.0.0.rc.7

更新：

我升级到2.0.1 mongoid和改变了我的用户包括在地址的选择相反。

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

我知道名字的倒数就没有意义了，但这里的要点就是使他们不同，或者如果您有好的名字在嵌入式阶级关系（如：CURRENT_USER，：permanent_user），你应该使用它来反转。

答

对我很好。我有一个类似的设置，并按预期工作。

感谢您的确认 – rubish 2011-03-19 14:04:54

我正面临着上述问题。我使用单个表单来获取current_address和permanent_address，但只有当前地址正在保存。 – rubish 2011-03-22 21:42:23

答

从Mongoid docs

当一个孩子嵌入文档可以属于不止一种类型的主文件，你可以告诉Mongoid通过将作为选项对父母的定义，以支持这一点，和多态对孩子的选择。在子对象上，将存储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

MongoID，嵌入在多个文档

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