Bug 22445: Allow marc fields as pattern

%tag$field%

There is a limitation here, only one replacement will work.
Let see if it is needed later to support several patterns

Sponsored-by: Orex Digital
Signed-off-by: Hayley Mapley <hayleymapley@catalyst.net.nz>
Signed-off-by: Hugo Agud <hagud@orex.es>
Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Michal Denar <black23@gmail.com>
Signed-off-by: Kyle Hall <kyle@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

Koha/Biblio.pm

@@ -679,6 +679,16 @@ sub custom_cover_image_url {
         my $issn = $self->biblioitem->issn;
         $url =~ s|%issn%|$issn|g;
     }
+
+    my $re = qr|%(?<field>\d{3})\$(?<subfield>.)%|;
+    if ( $url =~ $re ) {
+        my $field = $+{field};
+        my $subfield = $+{subfield};
+        my $marc_record = $self->metadata->record;
+        my $value = $marc_record->subfield($field, $subfield);
+        $url =~ s|$re|$value|;
+    }
+
     return $url;
 }
 

t/db_dependent/Koha/Biblios.t

@@ -21,6 +21,7 @@ use Modern::Perl;
 
 use Test::More tests => 6;
 use Test::Exception;
+use MARC::Field;
 
 use C4::Items;
 use C4::Biblio;
@@ -187,18 +188,26 @@ subtest 'can_be_transferred' => sub {
 };
 
 subtest 'custom_cover_image_url' => sub {
-    plan tests => 1;
+    plan tests => 2;
+
     t::lib::Mocks::mock_preference( 'CustomCoverImagesURL', 'https://my_url/%isbn%_%issn%.png' );
+
     my $isbn       = 'my_isbn';
     my $issn       = 'my_issn';
-    my $biblioitem = $builder->build_object(
-        {
-            class => 'Koha::Biblioitems',
-            value => { isbn => $isbn, issn => $issn }
-        }
-    );
-    my $biblio = Koha::Biblios->find( $biblioitem->biblionumber );
+    my $marc_record = MARC::Record->new;
+    my ( $biblionumber, undef ) = C4::Biblio::AddBiblio($marc_record, '');
+
+    my $biblio = Koha::Biblios->find( $biblionumber );
+    my $biblioitem = $biblio->biblioitem->set(
+        { isbn => $isbn, issn => $issn });
     is( $biblio->custom_cover_image_url, "https://my_url/${isbn}_${issn}.png" );
+
+    my $marc_024a = '710347104926';
+    $marc_record->append_fields( MARC::Field->new( '024', '', '', a => $marc_024a ) );
+    C4::Biblio::ModBiblio( $marc_record, $biblio->biblionumber );
+
+    t::lib::Mocks::mock_preference( 'CustomCoverImagesURL', 'https://my_url/%024$a%.png' );
+    is( $biblio->custom_cover_image_url, "https://my_url/$marc_024a.png" );
 };
 
 $schema->storage->txn_rollback;