Configuration.rb: 140: in `const_get ': uninitialized constant ActionDispatch :: Session :: EncryptedCookieStore (NameError)

Question

I got stuck in this error for about 3 days and I cannot figure out how to fix it. Any help would be greatly appreciated.

By the way, I'm on a Windows machine, and I'm using Ruby v.1.9.3p392 and Rails v. 3.2.13

The command I issued before the error:

'rails generate scaffold Username: string email: string'

This is the following error:

C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.13/lib/rails/a pplication/configuration.rb:140:in `const_get': uninitialized constant ActionDis patch::Session::EncryptedCookieStore (NameError) from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/application/configuration.rb:140:in `session_store' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/application.rb:273:in `block in default_middleware_stack' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/application.rb:237:in `tap' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/application.rb:237:in `default_middleware_stack' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/engine.rb:469:in `app' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/application/finisher.rb:31:in `block in <module:Finisher>' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/initializable.rb:30:in `instance_exec' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/initializable.rb:30:in `run' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/initializable.rb:55:in `block in run_initializers' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/initializable.rb:54:in `each' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/initializable.rb:54:in `run_initializers' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/application.rb:136:in `initialize!' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/railtie/configurable.rb:30:in `method_missing' from C:/ruby/rails_projects/demo_app/config/environment.rb:5:in `<top (r equired)>' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/application.rb:103:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/application.rb:103:in `require_environment!' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/commands.rb:25:in `<top (required)>' from bin/rails:4:in `require' from bin/rails:4:in `<main>' 

This is my configuration.rb file (it doesn't say anything about "encrypted")

 require 'active_support/core_ext/string/encoding' require 'active_support/core_ext/kernel/reporting' require 'active_support/file_update_checker' require 'rails/engine/configuration' module Rails class Application class Configuration < ::Rails::Engine::Configuration attr_accessor :allow_concurrency, :asset_host, :asset_path, :assets, :cache_classes, :cache_store, :consider_all_requests_local, :dependency_loading, :exceptions_app, :file_watcher, :filter_parameters, :force_ssl, :helpers_paths, :logger, :log_tags, :preload_frameworks, :railties_order, :relative_url_root, :reload_plugins, :secret_token, :serve_static_assets, :ssl_options, :static_cache_control, :session_options, :time_zone, :reload_classes_only_on_change, :whiny_nils attr_writer :log_level attr_reader :encoding def initialize(*) super self.encoding = "utf-8" @allow_concurrency = false @consider_all_requests_local = false @filter_parameters = [] @helpers_paths = [] @dependency_loading = true @serve_static_assets = true @static_cache_control = nil @force_ssl = false @ssl_options = {} @session_store = :cookie_store @session_options = {} @time_zone = "UTC" @log_level = nil @middleware = app_middleware @generators = app_generators @cache_store = [ :file_store, "#{root}/tmp/cache/" ] @railties_order = [:all] @relative_url_root = ENV["RAILS_RELATIVE_URL_ROOT"] @reload_classes_only_on_change = true @file_watcher = ActiveSupport::FileUpdateChecker @exceptions_app = nil @assets = ActiveSupport::OrderedOptions.new @assets.enabled = false @assets.paths = [] @assets.precompile = [ Proc.new{ |path| !File.extname(path).in?(['.js', '.css']) }, /(?:\/|\\|\A)application\.(css|js)$/ ] @assets.prefix = "/assets" @assets.version = '' @assets.debug = false @assets.compile = true @assets.digest = false @assets.manifest = nil @assets.cache_store = [ :file_store, "#{root}/tmp/cache/assets/" ] @assets.js_compressor = nil @assets.css_compressor = nil @assets.initialize_on_precompile = true @assets.logger = nil end def compiled_asset_path "/" end def encoding=(value) @encoding = value if "ruby".encoding_aware? silence_warnings do Encoding.default_external = value Encoding.default_internal = value end else $KCODE = value if $KCODE == "NONE" raise "The value you specified for config.encoding is " \ "invalid. The possible values are UTF8, SJIS, or EUC" end end end def paths @paths ||= begin paths = super paths.add "config/database", :with => "config/database.yml" paths.add "config/environment", :with => "config/environment.rb" paths.add "lib/templates" paths.add "log", :with => "log/#{Rails.env}.log" paths.add "public" paths.add "public/javascripts" paths.add "public/stylesheets" paths.add "tmp" paths end end # Enable threaded mode. Allows concurrent requests to controller actions and # multiple database connections. Also disables automatic dependency loading # after boot, and disables reloading code on every request, as these are # fundamentally incompatible with thread safety. def threadsafe! self.preload_frameworks = true self.cache_classes = true self.dependency_loading = false self.allow_concurrency = true self end # Loads and returns the contents of the #database_configuration_file. The # contents of the file are processed via ERB before being sent through # YAML::load. def database_configuration require 'erb' YAML::load(ERB.new(IO.read(paths["config/database"].first)).result) end def log_level @log_level ||= Rails.env.production? ? :info : :debug end def colorize_logging @colorize_logging end def colorize_logging=(val) @colorize_logging = val ActiveSupport::LogSubscriber.colorize_logging = val self.generators.colorize_logging = val end def session_store(*args) if args.empty? case @session_store when :disabled nil when :active_record_store ActiveRecord::SessionStore when Symbol ActionDispatch::Session.const_get(@session_store.to_s.camelize) else @session_store end else @session_store = args.shift @session_options = args.shift || {} end end end end end 

Here is my gemfile:

 source 'https://rubygems.org' # Bundle edge Rails instead: gem 'rails', github: 'rails/rails' gem 'rails', '3.2.13' group :development do gem 'sqlite3', '1.3.7' end # Gems used only for assets and not required # in production environments by default. group :assets do gem 'sass-rails', '~> 3.2.5' gem 'coffee-rails', '~> 3.2.2' # See https://github.com/sstephenson/execjs#readme for more supported runtimes # gem 'therubyracer', platforms: :ruby gem 'uglifier', '>= 1.2.3' end gem 'jquery-rails', '2.0.2' group :production do gem 'pg', '0.12.2' end # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks #gem 'turbolinks' # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder #gem 'jbuilder', '~> 1.0.1' # To use ActiveModel has_secure_password # gem 'bcrypt-ruby', '~> 3.0.0' # Use unicorn as the app server # gem 'unicorn' # Deploy with Capistrano # gem 'capistrano', group: :development # To use debugger # gem 'debugger' 

So, after deleting the word "Encrypted_" from the session_store.rb file. He picked up the EncryptedCookieStore (NameError), and now the following errors have appeared below, but I'm not sure if they are related:

 C:\ruby\rails_projects\demo_app>rails generate scaffold User name:string email:s tring invoke active_record C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3.2.13/lib/act ive_record/dynamic_matchers.rb:55:in `method_missing': undefined method `migrati on_error=' for ActiveRecord::Base:Class (NoMethodError) from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3 .2.13/lib/active_record/railtie.rb:66:in `block (3 levels) in <class:Railtie>' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3 .2.13/lib/active_record/railtie.rb:65:in `each' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3 .2.13/lib/active_record/railtie.rb:65:in `block (2 levels) in <class:Railtie>' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport- 3.2.13/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport- 3.2.13/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport- 3.2.13/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport- 3.2.13/lib/active_support/lazy_load_hooks.rb:42:in `each' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport- 3.2.13/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3 .2.13/lib/active_record/base.rb:720:in `<top (required)>' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/generators/named_base.rb:166:in `pluralize_table_names?' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/generators/named_base.rb:114:in `table_name' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activerecord-3 .2.13/lib/rails/generators/active_record/model/model_generator.rb:17:in `create_ migration_file' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/command.rb:27:in `run' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/invocation.rb:120:in `invoke_command' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/invocation.rb:127:in `block in invoke_all' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/invocation.rb:127:in `each' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/invocation.rb:127:in `map' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/invocation.rb:127:in `invoke_all' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/group.rb:233:in `dispatch' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/invocation.rb:109:in `invoke' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/group.rb:278:in `block in _invoke_for_class_method' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/shell.rb:74:in `with_padding' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/group.rb:267:in `_invoke_for_class_method' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/group.rb:150:in `_invoke_from_option_orm' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/command.rb:27:in `run' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/invocation.rb:120:in `invoke_command' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/invocation.rb:127:in `block in invoke_all' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/invocation.rb:127:in `each' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/invocation.rb:127:in `map' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/invocation.rb:127:in `invoke_all' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/group.rb:233:in `dispatch' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/thor-0.18.1/li b/thor/base.rb:439:in `start' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/generators.rb:171:in `invoke' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/commands/generate.rb:12:in `<top (required)>' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport- 3.2.13/lib/active_support/dependencies.rb:251:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport- 3.2.13/lib/active_support/dependencies.rb:251:in `block in require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport- 3.2.13/lib/active_support/dependencies.rb:236:in `load_dependency' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport- 3.2.13/lib/active_support/dependencies.rb:251:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.1 3/lib/rails/commands.rb:29:in `<top (required)>' from bin/rails:4:in `require' from bin/rails:4:in `<main>' 

Answer 1

Go to config/initializers/session_store.rb and change:

 App::Application.config.session_store :encrypted_cookie_store, key: '_app_session' 

in

 App::Application.config.session_store :cookie_store, key: '_app_session' 

A cookie store has recently appeared. Hope this helps.