1 files changed, 3 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/attribute.rb b/activerecord/lib/active_record/attribute.rb
index 8604ccb90d..da8eb10dc6 100644
--- a/activerecord/lib/active_record/attribute.rb
+++ b/activerecord/lib/active_record/attribute.rb
@@ -49,19 +49,19 @@ module ActiveRecord
       end
     end
 
-    class FromDatabase < Attribute
+    class FromDatabase < Attribute # :nodoc:
       def type_cast(value)
         type.type_cast_from_database(value)
       end
     end
 
-    class FromUser < Attribute
+    class FromUser < Attribute # :nodoc:
       def type_cast(value)
         type.type_cast_from_user(value)
       end
     end
 
-    class Null
+    class Null # :nodoc:
       class << self
         attr_reader :value, :value_before_type_cast, :value_for_database