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begin
require 'active_record'
require 'cgi'
require 'cgi/session'
# Contributed by Tim Bates
class CGI
class Session
# ActiveRecord database based session storage class.
#
# Implements session storage in a database using the ActiveRecord ORM library. Assumes that the database
# has a table called +sessions+ with columns +id+ (numeric, primary key), +sessid+ and +data+ (text).
# The session data is stored in the +data+ column in YAML format; the user is responsible for ensuring that
# only data that can be YAMLized is stored in the session.
class ActiveRecordStore
# The ActiveRecord class which corresponds to the database table.
class Session < ActiveRecord::Base
serialize :data
# Isn't this class definition beautiful?
end
# Create a new ActiveRecordStore instance. This constructor is used internally by CGI::Session.
# The user does not generally need to call it directly.
#
# +session+ is the session for which this instance is being created.
#
# +option+ is currently ignored as no options are recognized.
#
# This session's ActiveRecord database row will be created if it does not exist, or opened if it does.
def initialize(session, option=nil)
@session = Session.find_by_sessid(session.session_id) || Session.new("sessid" => session.session_id, "data" => {})
@data = @session.data
end
# Update and close the session's ActiveRecord object.
def close
return unless @session
update
@session = nil
end
# Close and destroy the session's ActiveRecord object.
def delete
return unless @session
@session.destroy
@session = nil
end
# Restore session state from the session's ActiveRecord object.
def restore
return unless @session
@data = @session.data
end
# Save session state in the session's ActiveRecord object.
def update
return unless @session
@session.update_attribute "data", @data
end
end #ActiveRecordStore
end #Session
end #CGI
rescue LoadError
# Couldn't load Active Record, so don't make this store available
end
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