acts_as_double_polymorphic_join

Hi there again,

I posted something similar before and didn't get any answer, probably
because I failed to put together a coherent question. I'll try to make
it simple this time.

Having an association like this one:

class Attachment < ActiveRecord::Base
  belongs_to :attachable, :polymorphic => true
  belongs_to :attacher, :polymorphic => true

  acts_as_double_polymorphic_join :attachables => [:photos, :videos],
                                  :attachers => [:typologies, :areas]
end

I need to render a select list that contains all the possible attacher
types and looks like this:

<select name="attacher[id]">
  <option value="Typology">Typologies</option>
  <option value="Area">Areas</option>
</select>

Is it possible? If so, how's the neatest way to do it?

Thanks again.

bump