From 05ee5d6ef6dc174f9646cb73b0bdd7b72e1fa1d4 Mon Sep 17 00:00:00 2001
From: Tomas Cohen Arazi <tomascohen@theke.io>
Date: Mon, 8 Jul 2024 17:30:01 -0300
Subject: [PATCH] Bug 37018: Silence useless warning
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Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: wainuiwitikapark <wainuiwitikapark@catalyst.net.nz>
(cherry picked from commit e1f52ff212f65d174604c6d180ab40ed16330883)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>
---
 Koha/REST/Plugin/Query.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Koha/REST/Plugin/Query.pm b/Koha/REST/Plugin/Query.pm
index e058bf9515..5718ec8ac2 100644
--- a/Koha/REST/Plugin/Query.pm
+++ b/Koha/REST/Plugin/Query.pm
@@ -548,7 +548,7 @@ sub _validate_query {
 
         # Top-level OR combination or nested AND combination
         for my $element (@$query) {
-            if ( ref $element eq 'ARRAY' && $element->[0] eq '-and' ) {
+            if ( ref $element eq 'ARRAY' && scalar @{$element} && $element->[0] eq '-and' ) {
                 _validate_query( $element->[1] );
             } else {
                 _validate_query($element);
-- 
2.39.5