From f7a080e1b6bd3d6cdae494f3c5e1f084a78b32c9 Mon Sep 17 00:00:00 2001
From: Erik Jan de Wit <erikjan.dewit@gmail.com>
Date: Tue, 3 Dec 2024 11:04:02 +0100
Subject: [PATCH] add empty hidden input so that empty checkboxes get submitted

fixes: #35352
Signed-off-by: Erik Jan de Wit <erikjan.dewit@gmail.com>
---
 .../resources/theme/keycloak.v2/login/user-profile-commons.ftl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/themes/src/main/resources/theme/keycloak.v2/login/user-profile-commons.ftl b/themes/src/main/resources/theme/keycloak.v2/login/user-profile-commons.ftl
index 46fb70d1df5a..ef1726cabad1 100644
--- a/themes/src/main/resources/theme/keycloak.v2/login/user-profile-commons.ftl
+++ b/themes/src/main/resources/theme/keycloak.v2/login/user-profile-commons.ftl
@@ -176,7 +176,8 @@
 		<#assign classDiv=properties.kcInputClassRadio!>
 		<#assign classInput=properties.kcInputClassRadioInput!>
 		<#assign classLabel=properties.kcInputClassRadioLabel!>
-	<#else>	
+	<#else>
+		<input type="hidden" id="${attribute.name}-empty" name="${attribute.name}" value=""/>
 		<#assign inputType='checkbox'>
 		<#assign classDiv=properties.kcInputClassCheckbox!>
 		<#assign classInput=properties.kcInputClassCheckboxInput!>