2 files changed, 4 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/read.rb b/activerecord/lib/active_record/attribute_methods/read.rb
index 506f5d75f9..d83c5a84b4 100644
--- a/activerecord/lib/active_record/attribute_methods/read.rb
+++ b/activerecord/lib/active_record/attribute_methods/read.rb
@@ -49,6 +49,8 @@ module ActiveRecord
         # key the @attributes_cache in read_attribute.
         def define_method_attribute(name)
           safe_name = name.unpack('h*').first
+          generated_attribute_methods::AttrNames.set_name_cache safe_name, name
+
           generated_attribute_methods.module_eval <<-STR, __FILE__, __LINE__ + 1
             def __temp__#{safe_name}
               read_attribute(AttrNames::ATTR_#{safe_name}) { |n| missing_attribute(n, caller) }
diff --git a/activerecord/lib/active_record/attribute_methods/write.rb b/activerecord/lib/active_record/attribute_methods/write.rb
index cd33494cc3..541856c678 100644
--- a/activerecord/lib/active_record/attribute_methods/write.rb
+++ b/activerecord/lib/active_record/attribute_methods/write.rb
@@ -14,6 +14,8 @@ module ActiveRecord
         # this code.
         def define_method_attribute=(name)
           safe_name = name.unpack('h*').first
+          generated_attribute_methods::AttrNames.set_name_cache safe_name, name
+
           generated_attribute_methods.module_eval <<-STR, __FILE__, __LINE__ + 1
             def __temp__#{safe_name}=(value)
               write_attribute(AttrNames::ATTR_#{safe_name}, value)