BUG: fix patron search

[koha.git] / C4 / Heading.pm

diff --git a/C4/Heading.pm b/C4/Heading.pm
index 193be16..5dfd0fa 100644 (file)
--- a/C4/Heading.pm
+++ b/C4/Heading.pm
@@ -17,8 +17,8 @@ package C4::Heading;
 # You should have received a copy of the GNU General Public License
 # along with Koha; if not, see <http://www.gnu.org/licenses>.
 
-use strict;
-use warnings;
+use Modern::Perl;
+
 use MARC::Record;
 use MARC::Field;
 use C4::Context;
@@ -170,6 +170,22 @@ sub preferred_authorities {
     return $results;
 }
 
+=head2 valid_bib_heading_subfield
+
+    if (C4::Heading::valid_bib_heading_subfield('100', 'e', '')) ...
+
+=cut
+
+sub valid_bib_heading_subfield {
+    my $tag           = shift;
+    my $subfield      = shift;
+    my $marcflavour   = @_ ? shift : C4::Context->preference('marcflavour');
+
+    my $marc_handler = _marc_format_handler($marcflavour);
+
+    return $marc_handler->valid_bib_heading_subfield( $tag, $subfield );
+}
+
 =head1 INTERNAL METHODS
 
 =head2 _search