Nested Attributes Not Saved for Links in Monoid

Question

I had a good working day yesterday, I made some changes, and I have no idea how I broke it. I'm sure this is a typo somewhere, but I don't see it.

Any changes made to the nested model in the form are not saved at all, the development log shows the passing attributes - and they look in the correct format, but they simply are not updated at all.

I have a model Userthat refers to Biographylike this:

# 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

And finally, my form (here I use a simple form, but for the most part it is very similar to 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 %>

And some conclusion from my development log, because the answers are there, and I just don't see them:

    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"=>"[e-mail]"}}
    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

User , Biography . -, !

Answer 1

, . ( Mongo Rails Mongoid?). Mongoid, :

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"}})

, , , , :

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

Mongoid Issue # 357 .

Answer 2

. , , . :

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

.