From 74115b1604e279232530695bc27ef09d383727bf Mon Sep 17 00:00:00 2001
From: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Date: Mon, 13 Jun 2022 14:26:33 +0100
Subject: [PATCH] Bug 30848: Fix issue exposed by unit tests

This patch changes the 'map' to a simple for loop so that we can easily
map multiple subfields to a field without overwriting the first previous
subfields in the structure.

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
---
 Koha/Filter/MARC/ExpandCodedFields.pm | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/Koha/Filter/MARC/ExpandCodedFields.pm b/Koha/Filter/MARC/ExpandCodedFields.pm
index 79b056431f..909d908e01 100644
--- a/Koha/Filter/MARC/ExpandCodedFields.pm
+++ b/Koha/Filter/MARC/ExpandCodedFields.pm
@@ -114,14 +114,8 @@ sub _getCodedFields {
     my $cached    = $cache->get_from_cache( $cache_key, { unsafe => 1 } );
     return $cached if $cached;
 
-    my $coded_fields = {
-        map {
-            $_->tagfield => {
-                $_->tagsubfield => {
-                    'authorised_value' => $_->authorised_value
-                }
-            }
-        } Koha::MarcSubfieldStructures->search(
+    my $coded_fields = {};
+    my @fields = Koha::MarcSubfieldStructures->search(
             {
                 frameworkcode    => $frameworkcode,
                 authorised_value => { '>' => '' }
@@ -130,8 +124,10 @@ sub _getCodedFields {
                 columns  => [ 'tagfield', 'tagsubfield', 'authorised_value' ],
                 order_by => [ 'tagfield', 'tagsubfield' ]
             }
-        )->as_list
-    };
+        )->as_list;
+    for my $field (@fields) {
+        $coded_fields->{ $field->tagfield }->{ $field->tagsubfield }->{'authorised_value'} = $field->authorised_value;
+    }
 
     $cache->set_in_cache( $cache_key, $coded_fields );
     return $coded_fields;
-- 
2.30.2