Bug 18213: Add Template plugin and fix for C4/Languages

Signed-off-by: Nicolas Legrand <nicolas.legrand@bulac.fr>
Signed-off-by: Alex Arnaud <alex.arnaud@biblibre.com>

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>

C4/Languages.pm

@@ -631,8 +631,12 @@ sub getlanguage {
 sub get_rfc4646_from_iso639 {
 
     my $iso_code = shift;
-    my $rfc_subtag = Koha::Database->new()->schema->resultset('LanguageRfc4646ToIso639')->find({iso639_2_code=>$iso_code})->rfc4646_subtag;
-    return $rfc_subtag;
+    my $rfc_subtag = Koha::Database->new()->schema->resultset('LanguageRfc4646ToIso639')->find({iso639_2_code=>$iso_code});
+    if ( $rfc_subtag ) {
+        return $rfc_subtag->rfc4646_subtag;
+    } else {
+        return;
+    }
 
 }
 

Koha/Template/Plugin/Languages.pm

@@ -0,0 +1,59 @@
+package Koha::Template::Plugin::Languages;
+
+# Copyright 2012 ByWater Solutions
+# Copyright 2013-2014 BibLibre
+#
+# Koha is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# Koha is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Koha; if not, see <http://www.gnu.org/licenses>.
+
+use Modern::Perl;
+
+use Template::Plugin;
+use base qw( Template::Plugin );
+
+use C4::Koha;
+use C4::Languages;
+
+sub GetByISOCode {
+    my ( $self, $lang, $code ) = @_;
+    $lang =  substr($lang,0,2); #Get db code from Koha lang value
+    my $rfc = C4::Languages::get_rfc4646_from_iso639( $code );
+    my $description = C4::Languages::language_get_description($rfc,$lang,'language');
+    return $description;
+}
+
+1;
+
+=head1 NAME
+
+Koha::Template::Plugin::Languages - TT Plugin for languages
+
+=head1 SYNOPSIS
+
+[% USE Languages %]
+
+[% Languages.GetByISOCode( 'LANG', 'ISO639CODE' ) %]
+
+=head1 ROUTINES
+
+=head2 GetByISOCode
+
+In a template, you can get the description for an language value with
+the following TT code: [% Languages.GetByISOCode( 'LANGUAGE', 'ISO639CODE' ) %]
+
+
+=head1 AUTHOR
+
+Nick Clemens <nick@bywatersolutions.com>
+
+=cut