From c946abd50e0c5f7202689514d202418faf00a5a6 Mon Sep 17 00:00:00 2001
From: Javier Eguiluz <javier.eguiluz@gmail.com>
Date: Thu, 28 May 2020 17:34:48 +0200
Subject: [PATCH] [Validation] Added a note about validation group names

---
 form/validation_groups.rst | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/form/validation_groups.rst b/form/validation_groups.rst
index 09b420bceaf..2dfe2889de9 100644
--- a/form/validation_groups.rst
+++ b/form/validation_groups.rst
@@ -33,3 +33,10 @@ be used to validate the underlying object. To apply the ``registration``
 group *and* all constraints that are not in a group, use::
 
     'validation_groups' => ['Default', 'registration']
+
+.. note::
+
+    You can choose any name for your validation groups, but Symfony recommends
+    using "lower snake case" names (e.g. ``foo_bar``) in contrast with the
+    automatic validation groups created by Symfony, which use "upper camel case"
+    (e.g. ``Default``, ``SomeClassName``).