class Upload < ActiveRecord::Base
  has_attachment  :content_type => ['application/pdf', :image],
                  :processor => :MiniMagick,
                  :storage => :file_system,
                  :path_prefix => 'uploads',
                  ##:max_size => 500.kilobytes,
                  ##:resize_to => '384x256>',
                  :thumbnails => {
                      :large => '96x96>',
                      :medium => '64x64>',
                      :small => '48x48>'
                  }

  validates_as_attachment


  ## there are no public filenames for these files
  def public_filename
    false
  end

  def full_filename(thumbnail = nil)
    file_system_path = (thumbnail ? thumbnail_class : self).attachment_options[:path_prefix].to_s
    File.join(RAILS_ROOT, file_system_path, *partitioned_path(thumbnail_name_for(thumbnail)))
  end

end