habtm_checkboxes for twitter bootstrap

twitter_bootstrap_habtm_checkboxes.rb

def habtm_checkboxes(obj, column, assignment_objects, assignment_object_display_column, label_css_class)
    obj_to_s    = obj.class.to_s.split("::").last.underscore
    field_name  = "#{obj_to_s}[#{column}][]"

    html = hidden_field_tag(field_name, "") 
    html += "\n"
    assignment_objects.each do |assignment_obj|
      cbx_id = "#{obj_to_s}_#{column}_#{assignment_obj.id}"
      cbx = check_box_tag field_name, assignment_obj.id, obj.send(column).include?(assignment_obj.id), :id => cbx_id
      html += label_tag cbx_id, h(assignment_obj.send(assignment_object_display_column)) + " " + h(cbx), :class => label_css_class + ' checkbox'
      html += "\n"
    end
    html
  end

thanks!