class Ckeditor::AttachmentFile < Ckeditor::Asset has_attached_file :data, :url => "/ckeditor_assets/attachments/:id/:filename", :path => ":rails_root/public/ckeditor_assets/attachments/:id/:filename" validates_attachment_presence :data validates_attachment_size :data, :less_than => 100.megabytes do_not_validate_attachment_file_type :data def url_thumb @url_thumb ||= Ckeditor::Utils.filethumb(filename) end end