3 files changed, 2 insertions, 5 deletions
diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index 1fc0c93732..39fac0b7e7 100755
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -3145,6 +3145,7 @@ module ActiveRecord #:nodoc:
   end
 
   Base.class_eval do
+    extend ActiveModel::Naming
     extend QueryCache::ClassMethods
     include Validations
     include Locking::Optimistic, Locking::Pessimistic
diff --git a/activerecord/lib/active_record/serializers/json_serializer.rb b/activerecord/lib/active_record/serializers/json_serializer.rb
index e49cf59494..21afcd6e5c 100644
--- a/activerecord/lib/active_record/serializers/json_serializer.rb
+++ b/activerecord/lib/active_record/serializers/json_serializer.rb
@@ -1,5 +1,5 @@
 require 'active_support/json'
-require 'active_support/core_ext/module/model_naming'
+require 'active_model/naming'
 
 module ActiveRecord #:nodoc:
   module Serialization
diff --git a/activerecord/lib/active_record/validations.rb b/activerecord/lib/active_record/validations.rb
index a150ba4acf..7ac6f6fe3b 100644
--- a/activerecord/lib/active_record/validations.rb
+++ b/activerecord/lib/active_record/validations.rb
@@ -194,10 +194,6 @@ module ActiveRecord
       def errors
         @errors ||= Errors.new(self)
       end
-
-      def get_attribute_value(attribute)
-        respond_to?(attribute.to_sym) ? send(attribute.to_sym) : self[attribute.to_sym]
-      end
     end
   end
 end