From a16f3bdf31409da9f00a9ad4b68531221ff57476 Mon Sep 17 00:00:00 2001
From: Florian Mortgat <50440633+atm-florianm@users.noreply.github.com>
Date: Tue, 4 Nov 2025 13:06:58 +0100
Subject: [PATCH] FIX 16.0: extrafield of type link to category causes SQL
 error in selectForFormsList() (#36074)

* FIX 16.0 (up to 19.0): extrafield of type link to category causes SQL error in selectForFormsList

* Apply suggestion from @atm-florianm
---
 htdocs/core/class/html.form.class.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/htdocs/core/class/html.form.class.php b/htdocs/core/class/html.form.class.php
index 59ad9db8377..beb884f39bc 100644
--- a/htdocs/core/class/html.form.class.php
+++ b/htdocs/core/class/html.form.class.php
@@ -7821,6 +7821,8 @@ class Form
 			if ($tmpfieldstoshow) {
 				$fieldstoshow = $tmpfieldstoshow;
 			}
+		} else if ($objecttmp->element === 'category') {
+			$fieldstoshow = 't.label';
 		} else {
 			// For backward compatibility
 			$objecttmp->fields['ref'] = array('type'=>'varchar(30)', 'label'=>'Ref', 'showoncombobox'=>1);