Rake task to delete old sessions from database (Rails).

gistfile1.rb

# metodo antiguo
desc "Delete old sessions from database."
task :delete_old_sessions => :environment do
 #puts "Removing old sessions from #{ENV['RAILS_ENV']} database" unless ENV['SILENT']
 sesiones = CGI::Session::ActiveRecordStore::Session.find(:all, :conditions => ['updated_at < ?', 3.hours.ago])
 sesiones.each {|s| s.destroy }
end

# para rails 2.3.5
desc "Borrar de la base de datos la sesiones que han expirado ."
task :borrar_sesiones => :environment do
 sesiones = ActiveRecord::SessionStore::Session.find(:all, :conditions => ['updated_at < ?', 3.hours.ago])
 sesiones.each {|s| s.delete}
 sesiones2 = ActiveRecord::SessionStore::Session.find(:all, :conditions => ['created_at < ?', 10.day.ago])
 sesiones2.each {|s| s.delete}
end