diff --git a/helper/orm.go b/helper/orm.go
index 47b08cf..3acce88 100644
--- a/helper/orm.go
+++ b/helper/orm.go
@@ -30,4 +30,6 @@ type NewOrmOrderBy func(sql string, direction contracts.OrderByDirection) contra
 
 type NewOrmGroupBy func(sql string) contracts.GroupBy
 
+type NewOrmModel func(res contracts.Resource, code, name string) contracts.Model
+
 type NewOrm func(res contracts.Resource, tx *db.Transaction) contracts.Orm