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Member "koha-19.11.15/Koha/SuggestionEngine/Plugin/ExplodedTerms.pm" (23 Feb 2021, 2548 Bytes) of package /linux/misc/koha-19.11.15.tar.gz:

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    1 package Koha::SuggestionEngine::Plugin::ExplodedTerms;
    2 
    3 # Copyright 2012 C & P Bibliography Services
    4 #
    5 # This file is part of Koha.
    6 #
    7 # Koha is free software; you can redistribute it and/or modify it
    8 # under the terms of the GNU General Public License as published by
    9 # the Free Software Foundation; either version 3 of the License, or
   10 # (at your option) any later version.
   11 #
   12 # Koha is distributed in the hope that it will be useful, but
   13 # WITHOUT ANY WARRANTY; without even the implied warranty of
   14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
   15 # GNU General Public License for more details.
   16 #
   17 # You should have received a copy of the GNU General Public License
   18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
   19 
   20 =head1 NAME
   21 
   22 Koha::SuggestionEngine::Plugin::ExplodedTerms - suggest searches for broader/narrower/related subjects
   23 
   24 =head1 SYNOPSIS
   25 
   26 
   27 =head1 DESCRIPTION
   28 
   29 Plugin to suggest expanding the search by adding broader/narrower/related
   30 subjects to subject searches.
   31 
   32 =cut
   33 
   34 use Modern::Perl;
   35 use Carp;
   36 use C4::Templates qw(gettemplate); # This is necessary for translatability
   37 
   38 use base qw(Koha::SuggestionEngine::Base);
   39 
   40 =head2 NAME
   41     my $name = $plugin->NAME;
   42 
   43 =cut
   44 
   45 sub NAME {
   46     return 'ExplodedTerms';
   47 }
   48 
   49 =head2 VERSION
   50     my $version = $plugin->VERSION;
   51 
   52 =cut
   53 
   54 sub VERSION {
   55     return '1.0';
   56 }
   57 
   58 =head2 get_suggestions
   59 
   60     my $suggestions = $plugin->get_suggestions(\%param);
   61 
   62 Return suggestions for the specified search that add broader/narrower/related
   63 terms to the search.
   64 
   65 =cut
   66 
   67 sub get_suggestions {
   68     my $self  = shift;
   69     my $param = shift;
   70 
   71     my $search = $param->{'search'};
   72 
   73     return if ( $search =~ m/^(ccl=|cql=|pqf=)/ );
   74     $search =~ s/(su|su-br|su-na|su-rl)[:=](\w*)/OP!$2/g;
   75     return if ( $search =~ m/\w+[:=]\w+/ );
   76 
   77     my @indexes = (
   78         'su-na',
   79         'su-br',
   80         'su-rl'
   81     );
   82     my $cgi = new CGI;
   83     my $template = C4::Templates::gettemplate('text/explodedterms.tt', 'opac', $cgi);
   84     my @results;
   85     foreach my $index (@indexes) {
   86         my $thissearch = $search;
   87         $thissearch = "$index:$thissearch"
   88           unless ( $thissearch =~ s/OP!/$index:/g );
   89         $template->{VARS}->{index} = $index;
   90         my $label = $template->output;
   91         push @results,
   92         {
   93             'search'  => $thissearch,
   94             relevance => 100,
   95                 # FIXME: it'd be nice to have some empirical measure of
   96                 #        "relevance" in this case, but we don't.
   97             label => $label
   98         };
   99     } return \@results;
  100 }
  101 
  102 1;