ruby - Rails 4.2.3 `method_missing': undefined method `active_record' -

i tried create new rails app today, , app behaving though activerecord isn't there.

i created app with:

rails new myapp --database=mysql 

when running rake db:create, get:

rake aborted! nomethoderror: undefined method `active_record' #<rails::application::configuration:0x007faad08b3058> /library/ruby/gems/2.0.0/gems/railties-4.2.3/lib/rails/railtie/configuration.rb:95:in `method_missing' /users/richard/dropbox/development/myapp/config/application.rb:24:in `<class:application>' /users/richard/dropbox/development/myapp/config/application.rb:10:in `<module:myapp>' /users/richard/dropbox/development/myapp/config/application.rb:9:in `<top (required)>' /users/richard/dropbox/development/myapp/rakefile:4:in `<top (required)>' (see full trace running task --trace) 

in fact, if comment out offending line , run rake -t:

... rake cache_digests:dependencies         # lookup first-level dependencies template (like messages/show or comments/_c... rake cache_digests:nested_dependencies  # lookup nested dependencies template (like messages/show or comments/_commen... rake doc:app                            # generate docs app -- available doc:rails, doc:guides (options: tem... rake log:clear                          # truncates *.log files in log/ 0 bytes (specify logs logs=t... rake middleware ... 

there no rake db:* tasks @ all!

i have bunch of other rails apps ranging rails 3.x rails 4.2.0 , work fine. it's app, created today (and new app) showing behaviour.

running osx 10.10, ruby 2.0.0, stock gemfile.

application.rb:

require file.expand_path('../boot', __file__)  require 'rails/all'  # require gems listed in gemfile, including gems # you've limited :test, :development, or :production. bundler.require(*rails.groups)  module myapp   class application < rails::application     # settings in config/environments/* take precedence on specified here.     # application configuration should go files in config/initializers     # -- .rb files in directory automatically loaded.      # set time.zone default specified zone , make active record auto-convert zone.     # run "rake -d time" list of tasks finding time zone names. default utc.     # config.time_zone = 'central time (us & canada)'      # default locale :en , translations config/locales/*.rb,yml auto loaded.     # config.i18n.load_path += dir[rails.root.join('my', 'locales', '*.{rb,yml}').to_s]     # config.i18n.default_locale = :de      # not swallow errors in after_commit/after_rollback callbacks.     config.active_record.raise_in_transactional_callbacks = true   end end 

the 6.0.1 version of arel gem appears cause issue, updated yesterday on 7/10/15. https://rubygems.org/gems/arel/versions/6.0.1

== update ==

the author addressed issue morning 6.0.2. https://github.com/rails/arel/issues/375

run:

bundle update