many2many through and nested forms.

I have the following:

class Lot < ActiveRecord::Base
        has_many :images
        has_many :features
        has_many :feature_labels, :through => :features
        has_many :photos, :through => :images
        accepts_nested_attributes_for :photos
        accepts_nested_attributes_for :features
end

      <% f.fields_for :features do |field|%>
         <div>
         <%= field.check_box :avaliable, { :class => 'check' },
"true", "fales"%>
         <%= field.label :name %>
         </div>
      <% end %>

class CreateFeatureLabels < ActiveRecord::Migration
  def self.up
    create_table :feature_labels do |t|
      t.string :name

      t.timestamps
    end
  end

  def self.down
    drop_table :feature_labels
  end
end
class CreateFeatures < ActiveRecord::Migration
  def self.up
    create_table :features do |t|
      t.integer :lot_id
                t.integer :feature_label_id
      t.boolean :avaliable

      t.timestamps
    end
  end

  def self.down
    drop_table :features
  end
end

the form works and the controller saves the data correctly. I cannot
figure out home to get the correct label. can someone give me some
pointers. :>

found my own answer..

field.object.xxxxxx.xxxxxx