Treequel adding to many extensions

gistfile1.rb

class OrganizationalUnitsController < ApplicationController

  def show
    @organizational_unit = OrganizationalUnit.find(params[:id])
  end

end

require 'treequel/model'
require 'treequel/model/objectclass'

module OrganizationalUnit
  extend Treequel::Model::ObjectClass
  extend Global::Class

  model_class Treequel::Model
  model_bases "o=company,c=cl"
  model_objectclasses :organizationalUnit

  
  # id is the dn off the entry we are looking
  def self.find(id)
      array = id.split(/,/)
      name = array.shift.split(/\=/)
      query = {name[0].to_sym => name[1]}
      base = array.join(",")
      model_bases base
      filter(query).first
  end

end

show.html.erb

<div style="float: left;">
		<p>
			<%= @organizational_unit.description_text %><br/>
			<%= @organizational_unit.extensions.size %>
		</p>
</div>