[Rails] Shared code for controllers

[Rodrigo Alvarez Fernández]

Hi,

I think that this is made from a plugin or something in /lib/, but i really
don't know which is the better way:

I have this in my MediasController:

  def mediatype_medias_options
    if params[:id]
      begin
        @mediatype = MediaType.find(params[:id])
        render :inline => "<%= options_from_collection_for_select @
mediatype.medias, 'id', 'name' %>"
      rescue Exception
        render :nothing => true
      end
    else
      render :nothing => true
    end
  end


I use it from a form, that sends a mediatype id, and this renders <options>
for a select (it's something like a hier. select).
Since i must use this kind of thing into some controllers, i wish to follow
the DRY principle, but don't know how.
Could you please give me some advice?

Thanks.
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