在Mongoid中没有为references_one保存的嵌套属性

Question

昨天我工作得很好，做了一些改变，我不知道我是如何破坏它的。我确定这是一个错别字，但我看不到它。

对窗体中的嵌套模型所做的任何更改根本就没有被保存，开发日志显示的是属性 - 而且它们看起来是正确的格式，但它根本没有更新。

我有一个User模型，references_one Biography像这样：

# app/models/user.rb 
class User 
    include Mongoid::Document 
    include Mongoid::Timestamps 

    field :first_name, :type => String 
    field :last_name, :type => String 
    devise :database_authenticatable, :recoverable, :rememberable, :trackable, :validatable 

    references_one :biography 

    accepts_nested_attributes_for :biography 
    #--snip--- 
end 

# app/models/biography.rb 
class Biography 
    include Mongoid::Document 
    include Mongoid::Timestamps 

    field :content, :type => String 
    field :role, :type => String 
    field :is_crew, :type => Boolean 

    referenced_in :user 
end 

最后我的形式（我用简单的形式，在这里，但在大多数情况下它的表现非常相似，formtastic）：

<%= simple_form_for [:manage, @user], :html => {:multipart => true}, :position => :left do |f| %> 
    <h2>Login details</h2> 
    <%= f.input :email, :input_html => {:class => "text"} %>  
    <%= f.input :first_name, :input_html => {:class => "text"} %> 
    <%= f.input :last_name, :input_html => {:class => "text"} %> 

    <div class="biography"> 
    <h2>Biography</h2> 
    <%= f.simple_fields_for :biography do |biography_form| %> 
     <%= biography_form.input :role, :input_html => {:class => "text"} %> 
     <%= biography_form.input :content, :as => :text, :input_html => {:class => "textarea"} %> 
     <%= biography_form.input :is_crew, :as => :boolean %> 
    <%- end -%> 
    </div> 

    <%= f.submit "Save user", :class => "submit mid" %> 
<% end %> 

而且从我的开发日志一些输出，柜面的答案躺在那里，我只是不能看到他们：

Started POST "/manage/users/john-doe" for 127.0.0.1 at Wed Dec 15 11:42:09 +1100 2010 
     Processing by Manage::UsersController#update as HTML 
     Parameters: {"commit"=>"Save user", "authenticity_token"=>"44QlHsbKb8Pm91wnxWJa8Y0QsUXDzp/3rVpfs3G1Inc=", "utf8"=>"✓", "id"=>"john-doe", "user"=>{"biography_attributes"=>{"is_crew"=>"0", "role"=>"Tenor", "id"=>"4d080de56a4f1dfe7700000e", "content"=>"John was born on the 1st of January, 1970."}, "last_name"=>"Doe", "first_name"=>"Johnathan", "email"=>"testing@involved.com.au"}} 
    the_idea_of_north_development['users'].find({:_id=>BSON::ObjectId('4d06e6036a4f1dcb1b000001')}, {}).limit(-1) 
    the_idea_of_north_development['users'].find({:slug=>"john-doe"}, {}).limit(-1) 
    the_idea_of_north_development['biographies'].find({"user_id"=>BSON::ObjectId('4d080de06a4f1dfe7700000d')}, {}).limit(-1) 
    the_idea_of_north_development['$cmd'].find({"count"=>"users", "query"=>{:_id=>{"$ne"=>BSON::ObjectId('4d080de06a4f1dfe7700000d')}, :email=>/^testing@involved\.com\.au$/i}, "fields"=>nil}, {}).limit(-1) 
    the_idea_of_north_development['users'].find({"slug"=>"johnathan-doe"}, {}) 
    MONGODB the_idea_of_north_development['users'].update({"_id"=>BSON::ObjectId('4d080de06a4f1dfe7700000d')}, {"$set"=>{"slug"=>"johnathan-doe", "updated_at"=>Wed Dec 15 00:42:09 UTC 2010, "first_name"=>"Johnathan"}}) 
    Redirected to http://lvh.me:3000/manage/users 
    Completed 302 Found in 17ms 

对User型号的任何更改都可以更新，但对Biography的更改未保存。帮助我蜂巢心，你是我唯一的希望！

Answer 1

我一直有一个类似的问题，嵌套的文件没有被保留的变化。 （问题是How Do I Update Nested Mongo Document Attributes in Rails with Mongoid?）。我怀疑Mongoid本身的，因为这样的消息下面是从未登录更新嵌入文档：如果尝试为正在取得作出更新到嵌套文件

MONGODB the_idea_of_north_development['users'].update({"_id"=>BSON::ObjectId('4d080de06a4f1dfe7700000d')}, {"$set"=>{"slug"=>"johnathan-doe", "updated_at"=>Wed Dec 15 00:42:09 UTC 2010, "first_name"=>"Johnathan"}}) 

，会有一个行类似于一个选择父文件和设置嵌套文档的值，如：

the_idea_of_north_development['users'].update({"_id"=>PARENT_DOCUMENT}, {"$set"=>{"biography_attributes.is_crew"=>"0", "biography_attribute.role"=>"Tenor", etc...}) 

就个人而言，我觉得Mongoid Issue #357一个可能的原因。

Answer 2

在同一问题上两周内死亡。 我设法做的唯一修复如下。 在用户控制器，这样做：

if @user.save 
params[:user][:biography_attributes].each do |bio| 
     @biography = @user.biography.build({ :role => bio[:role], :iscrew => bio[:iscrew] }) 
    end 

你会遍历传记的所有实例，eplicitly它保存到数据库中。