From 9fb022496f0736e758aded44553f185fdac2f498 Mon Sep 17 00:00:00 2001
From: Javier Eguiluz <javier.eguiluz@gmail.com>
Date: Thu, 29 Jan 2026 16:02:26 +0100
Subject: [PATCH] [Form] Mention conditional constraitns via form validation
 groups

---
 forms.rst | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/forms.rst b/forms.rst
index c271f519aa..5661998d2b 100644
--- a/forms.rst
+++ b/forms.rst
@@ -1630,6 +1630,12 @@ To achieve this, use the ``expression`` option of the
         ])
     ;
 
+.. seealso::
+
+    Another way to implement conditional constraints is to configure the
+    ``validation_groups`` form option with a callable. See
+    :doc:`/form/validation_groups`.
+
 Troubleshooting
 ---------------