session expire for active record store

namespace :mysql do
  # Parameter 'days' indicates maximum inactivity days before deletion. Default is 30
  desc "cleanup old sessions from the database"   
  task :expire_sessions => :environment do
    days = ENV['days'] || 30 
    ActiveRecord::Base.connection.execute "delete from sessions where datediff(utc_date(),updated_at) > #{days}"  
    puts "Sessions idle more than #{days} days expired"
    
    puts "Anonymous sessions expired"
  end #task do
  
end #namespace