From 5d206a0015832a5cb9b4c915080c89d4a6447cd4 Mon Sep 17 00:00:00 2001
From: David Bogner <davidbogner@gmail.com>
Date: Sat, 25 May 2024 06:27:59 +0200
Subject: [PATCH] Fix search mode rendering for select fields

---
 filter/filter_form.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/filter/filter_form.php b/filter/filter_form.php
index ebd86aaf..38152dab 100644
--- a/filter/filter_form.php
+++ b/filter/filter_form.php
@@ -181,6 +181,10 @@ public function custom_search_definition($customsearch, $fields, $fieldoptions,
                         $operatoroptions);
                 $mform->setDefault('searchoperator' . $count, $operator);
                 // Field search elements.
+                // For select options $value is an arry, we have to convert it to string, function param only accepts strings.
+                if (is_array($value)) {
+                    $value = json_encode($value);
+                }
                 list($elems, $separators) = $fields[$fieldid]->renderer()->render_search_mode(
                         $mform, $count, $value);