scinote-web/lib/tasks/exportable_items.rake

namespace :exportable_items do
  desc 'Removes exportable zip files if older than 7 days'
  task cleanup: :environment do
    ZipExport.where('created_at < ?', 7.days.ago).destroy_all
    puts "All exportable zip files older than '#{7.days.ago}' have been removed"
  end
end