From aebe6bc644b2230ce0aee99288560270f145e664 Mon Sep 17 00:00:00 2001
From: Pavel Merzlyakov <panekmerzlyakov@gmail.com>
Date: Thu, 23 Nov 2023 17:36:02 +0300
Subject: [PATCH] fix interface convertion for null virtual field

---
 tpl/macros_struct.twig | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/tpl/macros_struct.twig b/tpl/macros_struct.twig
index 3c931a6..4800962 100644
--- a/tpl/macros_struct.twig
+++ b/tpl/macros_struct.twig
@@ -603,10 +603,12 @@ func (s *{{ name|default(s.name) }}) ReadFields(reader meta.Reader) error {
 			return err
 		}
 	} else {
-		{{ fname }} = v.(I{{ type.name }})
-		{% if has_table_token %}
-			s.changedFields.SetChanged("{{ alias }}")
-		{% endif %}
+		if v != nil {
+			{{ fname }} = v.(I{{ type.name }})
+			{% if has_table_token %}
+				s.changedFields.SetChanged("{{ alias }}")
+			{% endif %}
+		}
 	}
 	{% else %}
 	if err := reader.BeginContainer("{{ alias }}"); err != nil {