From fb6e7b33c11c8c82d72909e4d0e66be5f03fdd41 Mon Sep 17 00:00:00 2001
From: Matthew Wu <wymatthewwu@gmail.com>
Date: Mon, 1 Apr 2024 14:51:07 -0400
Subject: [PATCH] create "none" option

---
 src/Plugin/Block/AdvancedSearchBlock.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Plugin/Block/AdvancedSearchBlock.php b/src/Plugin/Block/AdvancedSearchBlock.php
index ce41963..bdc4204 100644
--- a/src/Plugin/Block/AdvancedSearchBlock.php
+++ b/src/Plugin/Block/AdvancedSearchBlock.php
@@ -334,6 +334,7 @@ public function blockForm($form, FormStateInterface $form_state) {
       $form[self::SETTING_CONTEXTUAL_FILTER] = [
         '#type' => 'select',
         '#title' => $this->t('Context Filter'),
+        '#empty_option' => $this->t('- None -'), // Set the empty option
         '#description' => $this->t('If more than one <strong>Context Filter</strong> is defined, specify which is used to <strong>include</strong> only <strong>direct children</strong> of the Collection as it will disabled to allow recursive searching.'),
         '#options' => $options,
         '#default_value' => $this->configuration[self::SETTING_CONTEXTUAL_FILTER],