load active_support/core_ext/class/attribute in active_support/rails

actionmailer/lib/action_mailer/test_case.rb

 require 'active_support/test_case'
-require 'active_support/core_ext/class/attribute'
 
 module ActionMailer
   class NonInferrableMailerError < ::StandardError

actionpack/lib/abstract_controller.rb

 require 'action_pack'
 require 'active_support/rails'
-require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/module/attr_internal'
 require 'active_support/core_ext/module/delegation'
 require 'active_support/core_ext/module/anonymous'

actionpack/lib/action_controller/metal.rb

-require 'active_support/core_ext/class/attribute'
 require 'action_dispatch/middleware/stack'
 
 module ActionController

actionpack/lib/action_controller/metal/helpers.rb

-require 'active_support/core_ext/class/attribute'
 
 module ActionController
   # The \Rails framework provides a large number of helpers for working with assets, dates, forms,

actionpack/lib/action_controller/metal/hide_actions.rb

-require 'active_support/core_ext/class/attribute'
 
 module ActionController
   # Adds the ability to prevent public methods on a controller to be called as actions.

actionpack/lib/action_controller/metal/mime_responds.rb

 require 'abstract_controller/collector'
-require 'active_support/core_ext/class/attribute'
 
 module ActionController #:nodoc:
   module MimeResponds

actionpack/lib/action_controller/metal/params_wrapper.rb

-require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/hash/slice'
 require 'active_support/core_ext/hash/except'
 require 'active_support/core_ext/module/anonymous'

actionpack/lib/action_controller/metal/renderers.rb

-require 'active_support/core_ext/class/attribute'
 require 'set'
 
 module ActionController

actionpack/lib/action_controller/metal/request_forgery_protection.rb

-require 'active_support/core_ext/class/attribute'
 require 'action_controller/metal/exceptions'
 
 module ActionController #:nodoc:

actionpack/lib/action_controller/test_case.rb

 require 'rack/session/abstract/id'
 require 'active_support/core_ext/object/to_query'
-require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/module/anonymous'
 
 module ActionController

actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb

 require 'set'
 require 'cgi'
-require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/class/attribute_accessors'
 
 module HTML

actionpack/lib/action_view/base.rb

 require 'active_support/core_ext/module/attr_internal'
 require 'active_support/core_ext/module/delegation'
-require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/class/attribute_accessors'
 require 'active_support/ordered_options'
 require 'action_view/log_subscriber'

actionpack/lib/action_view/helpers/asset_tag_helpers/asset_include_tag.rb

-require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/string/inflections'
 require 'active_support/core_ext/file'
 require 'action_view/helpers/tag_helper'

actionpack/lib/action_view/helpers/form_helper.rb

@@ -4,7 +4,6 @@
 require 'action_view/helpers/form_tag_helper'
 require 'action_view/helpers/active_model_helper'
 require 'action_view/helpers/tags'
-require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/class/attribute_accessors'
 require 'active_support/core_ext/hash/slice'
 require 'active_support/core_ext/string/output_safety'

actionpack/lib/action_view/template/handlers/erb.rb

 require 'action_dispatch/http/mime_type'
-require 'active_support/core_ext/class/attribute'
 require 'erubis'
 
 module ActionView

activemodel/lib/active_model/attribute_methods.rb

-require 'active_support/core_ext/class/attribute'
 require 'active_support/deprecation'
 
 module ActiveModel

activemodel/lib/active_model/mass_assignment_security.rb

-require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/string/inflections'
 require 'active_model/mass_assignment_security/permission_set'
 require 'active_model/mass_assignment_security/sanitizer'

activemodel/lib/active_model/serializers/json.rb

 require 'active_support/json'
-require 'active_support/core_ext/class/attribute'
 
 module ActiveModel
   # == Active Model JSON Serializer

activemodel/lib/active_model/validations.rb

 require 'active_support/core_ext/array/extract_options'
-require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/hash/keys'
 require 'active_support/core_ext/hash/except'
 require 'active_model/errors'

activerecord/lib/active_record/associations.rb

@@ -2,7 +2,6 @@
 require 'active_support/core_ext/module/delegation'
 require 'active_support/core_ext/string/conversions'
 require 'active_support/core_ext/module/remove_method'
-require 'active_support/core_ext/class/attribute'
 
 module ActiveRecord
   class InverseOfAssociationNotFoundError < ActiveRecordError #:nodoc:

activerecord/lib/active_record/attribute_methods/dirty.rb

-require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/module/attribute_accessors'
 
 module ActiveRecord

activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb

-require 'active_support/core_ext/class/attribute'
 
 module ActiveRecord
   ActiveSupport.on_load(:active_record_config) do

activerecord/lib/active_record/base.rb

@@ -4,7 +4,6 @@
 require 'active_support/dependencies'
 require 'active_support/descendants_tracker'
 require 'active_support/time'
-require 'active_support/core_ext/class/attribute'
 require 'active_support/core_ext/class/attribute_accessors'
 require 'active_support/core_ext/class/delegating_attributes'
 require 'active_support/core_ext/array/extract_options'

activerecord/lib/active_record/explain.rb

 require 'active_support/lazy_load_hooks'
-require 'active_support/core_ext/class/attribute'
 
 module ActiveRecord
   ActiveSupport.on_load(:active_record_config) do

activerecord/lib/active_record/nested_attributes.rb

 require 'active_support/core_ext/hash/except'
 require 'active_support/core_ext/object/try'
 require 'active_support/core_ext/hash/indifferent_access'
-require 'active_support/core_ext/class/attribute'
 
 module ActiveRecord
   ActiveSupport.on_load(:active_record_config) do

activerecord/lib/active_record/observer.rb

-require 'active_support/core_ext/class/attribute'
 
 module ActiveRecord
   # = Active Record Observer

activerecord/lib/active_record/readonly_attributes.rb

-require 'active_support/core_ext/class/attribute'
 
 module ActiveRecord
   module ReadonlyAttributes

activerecord/lib/active_record/reflection.rb

-require 'active_support/core_ext/class/attribute'
 
 module ActiveRecord
   # = Active Record Reflection

activerecord/lib/active_record/scoping/named.rb

 require 'active_support/core_ext/array'
 require 'active_support/core_ext/hash/except'
 require 'active_support/core_ext/kernel/singleton_class'
-require 'active_support/core_ext/class/attribute'
 require 'active_support/deprecation'
 
 module ActiveRecord

activerecord/lib/active_record/store.rb

 require 'active_support/core_ext/hash/indifferent_access'
-require 'active_support/core_ext/class/attribute'
 
 module ActiveRecord
   # Store gives you a thin wrapper around serialize for the purpose of storing hashes in a single column.

activerecord/lib/active_record/timestamp.rb

-require 'active_support/core_ext/class/attribute'
 
 module ActiveRecord
   ActiveSupport.on_load(:active_record_config) do

activesupport/lib/active_support/rails.rb

@@ -8,14 +8,17 @@
 # but it does not belong to the Rails public interface. It is internal to
 # Rails and can change anytime.
 
-# blank? and present?
+# Defines Object#blank? and Object#present?.
 require 'active_support/core_ext/object/blank'
 
-# in?
+# Defines Object#in?.
 require 'active_support/core_ext/object/inclusion'
 
 # Rails own autoload, eager_load, etc.
 require 'active_support/dependencies/autoload'
 
-# support for ClassMethods and the included macro
+# Support for ClassMethods and the included macro.
 require 'active_support/concern'
+
+# Defines Class#class_attribute.
+require 'active_support/core_ext/class/attribute'