From 93f2cf9b7311f220bf255635e9cfed63eee5640f Mon Sep 17 00:00:00 2001
From: Clemens Schwaighofer <clemens.schwaighofer@e-graphics.com>
Date: Thu, 2 Nov 2017 16:05:06 +0900
Subject: [PATCH] DB IO Class: if not PK auto found, set to NULL to skip return

In case no primary key is set and the auto detect does not return a
primary key, set the primary key variable to 'NULL' string to trigger
skip in returning insert id flow.
---
 www/libs/Class.DB.IO.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/www/libs/Class.DB.IO.inc b/www/libs/Class.DB.IO.inc
index 35c2f17f..4833e09a 100644
--- a/www/libs/Class.DB.IO.inc
+++ b/www/libs/Class.DB.IO.inc
@@ -661,7 +661,7 @@
 						{
 							$this->pk_name_table[$table] = $this->db_functions->_db_primary_key($table, $schema);
 						}
-						$this->pk_name = $this->pk_name_table[$table];
+						$this->pk_name = $this->pk_name_table[$table] ? $this->pk_name_table[$table] : 'NULL';
 					}
 					if (!preg_match("/ returning /i", $this->query) && $this->pk_name)
 					{