From c50cd4feef323d26c5dcc832016803ac6cfc3840 Mon Sep 17 00:00:00 2001
From: Aleksandr Falichev <6064233@gmail.com>
Date: Thu, 8 Oct 2020 17:22:19 +0800
Subject: [PATCH] handling the output of None fields

---
 search_admin_autocomplete/admin.py | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/search_admin_autocomplete/admin.py b/search_admin_autocomplete/admin.py
index 8fc237b..ac1eaa1 100644
--- a/search_admin_autocomplete/admin.py
+++ b/search_admin_autocomplete/admin.py
@@ -55,7 +55,18 @@ def get_instance_name(self, instance: Model) -> str:
         """
         Format instance name based on value of search fields.
         """
-        return ", ".join([getattr(instance, field) for field in self.search_fields])
+        values = []
+
+        for field in self.search_fields:
+            value = getattr(instance, field)
+            if not value:
+                continue
+            values.append(str(value))
+
+        if not values:
+            return ""
+
+        return ", ".join(values)
 
     def get_instance_url(self, instance: Model) -> str:
         """