require 'rack/session/abstract/id' module ActionDispatch class Request < Rack::Request # SessionHash is responsible to lazily load the session from store. class Session # :nodoc: ENV_SESSION_KEY = Rack::Session::Abstract::ENV_SESSION_KEY # :nodoc: ENV_SESSION_OPTIONS_KEY = Rack::Session::Abstract::ENV_SESSION_OPTIONS_KEY # :nodoc: def self.create(store, env, default_options) session_was = find env session = Request::Session.new(store, env) session.merge! session_was if session_was set(env, session) Options.set(env, Request::Session::Options.new(store, env, default_options)) session end def self.find(env) env[ENV_SESSION_KEY] end def self.set(env, session) env[ENV_SESSION_KEY] = session end class Options #:nodoc: def self.set(env, options) env[ENV_SESSION_OPTIONS_KEY] = options end def self.find(env) env[ENV_SESSION_OPTIONS_KEY] end def initialize(by, env, default_options) @by = by @env = env @delegate = default_options.dup end def [](key) if key == :id @delegate.fetch(key) { @delegate[:id] = @by.send(:extract_session_id, @env) } else @delegate[key] end end def []=(k,v); @delegate[k] = v; end def to_hash; @delegate.dup; end def values_at(*args); @delegate.values_at(*args); end end def initialize(by, env) @by = by @env = env @delegate = {} @loaded = false @exists = nil # we haven't checked yet end def options Options.find @env end def destroy clear options = self.options || {} @by.send(:destroy_session, @env, options[:id], options) options[:id] = nil @loaded = false end def [](key) load_for_read! @delegate[key.to_s] end def has_key?(key) load_for_read! @delegate.key?(key.to_s) end alias :key? :has_key? alias :include? :has_key? def []=(key, value) load_for_write! @delegate[key.to_s] = value end def clear load_for_write! @delegate.clear end def to_hash load_for_read! @delegate.dup.delete_if { |_,v| v.nil? } end def update(hash) load_for_write! @delegate.update stringify_keys(hash) end def delete(key) load_for_write! @delegate.delete key.to_s end def inspect if loaded? super else "#<#{self.class}:0x#{(object_id << 1).to_s(16)} not yet loaded>" end end def exists? return @exists unless @exists.nil? @exists = @by.send(:session_exists?, @env) end def loaded? @loaded end def empty? load_for_read! @delegate.empty? end def merge!(other) load_for_write! @delegate.merge!(other) end private def load_for_read! load! if !loaded? && exists? end def load_for_write! load! unless loaded? end def load! id, session = @by.load_session @env options[:id] = id @delegate.replace(stringify_keys(session)) @loaded = true end def stringify_keys(other) other.each_with_object({}) { |(key, value), hash| hash[key.to_s] = value } end end end end