From 371b971353af2785bbd26483ca1b5320ef239db8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Maci=C4=85g?= <maciejmaciag@intmail.pl>
Date: Tue, 7 Jan 2025 21:12:44 +0100
Subject: [PATCH] [LiveComponent] Check if accessed vars exist

---
 src/LiveComponent/src/ComponentWithFormTrait.php | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/LiveComponent/src/ComponentWithFormTrait.php b/src/LiveComponent/src/ComponentWithFormTrait.php
index c8ab525d495..a8376777c1a 100644
--- a/src/LiveComponent/src/ComponentWithFormTrait.php
+++ b/src/LiveComponent/src/ComponentWithFormTrait.php
@@ -261,14 +261,13 @@ private function extractFormValues(FormView $formView): array
                 continue;
             }
 
-            if (\array_key_exists('choices', $child->vars)
+            if (\array_key_exists('choices', $child->vars) && $child->vars['choices']
                 && $child->vars['required']
                 && !$child->vars['disabled']
                 && !$child->vars['value']
-                && (false === $child->vars['placeholder'] || null === $child->vars['placeholder'])
-                && !$child->vars['multiple']
-                && !$child->vars['expanded']
-                && $child->vars['choices']
+                && \array_key_exists('placeholder', $child->vars) && (false === $child->vars['placeholder'] || null === $child->vars['placeholder'])
+                && \array_key_exists('multiple', $child->vars) && !$child->vars['multiple']
+                && \array_key_exists('expanded', $child->vars) && !$child->vars['expanded']
             ) {
                 if (null !== $firstKey = array_key_first($child->vars['choices'])) {
                     $values[$name] = $child->vars['choices'][$firstKey]->value ?? null;