From 35188879e03fa256bef7ba1967ad8b9e81831bfa Mon Sep 17 00:00:00 2001
From: Steve Boyd <emteknetnz@gmail.com>
Date: Wed, 8 Nov 2023 15:43:07 +1300
Subject: [PATCH] FIX Add extraEmptyValues to TreedropdownField

---
 src/Forms/TreeDropdownField.php | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/Forms/TreeDropdownField.php b/src/Forms/TreeDropdownField.php
index e61e5411dd4..77c8cbb1890 100644
--- a/src/Forms/TreeDropdownField.php
+++ b/src/Forms/TreeDropdownField.php
@@ -984,4 +984,16 @@ public function setShowSelectedPath($showSelectedPath)
         $this->showSelectedPath = $showSelectedPath;
         return $this;
     }
+
+    /**
+     * @return array
+     */
+    public function getSchemaValidation()
+    {
+        $validationList = parent::getSchemaValidation();
+        if (array_key_exists('required', $validationList)) {
+            $validationList['required'] = ['extraEmptyValues' => ['0']];
+        }
+        return $validationList;
+    }
 }