opac/opac-tags_subject.pl

   1 #!/usr/bin/perl
   2
   3 # Copyright 2000-2002 Katipo Communications
   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
  21 =head1 opac-tags_subject.pl
  22
  23 TODO :: Description here
  24
  25 =cut
  26
  27 use strict;
  28 use warnings;
  29
  30 use C4::Auth;
  31 use C4::Context;
  32 use C4::Output;
  33 use CGI;
  34 use C4::Biblio;
  35 use C4::Koha;       # use getitemtypeinfo
  36
  37 my $query = new CGI;
  38
  39 my $dbh = C4::Context->dbh;
  40
  41 # open template
  42 my ( $template, $loggedinuser, $cookie ) = get_template_and_user(
  43     {
  44         template_name   => "opac-tags_subject.tt",
  45         query           => $query,
  46         type            => "opac",
  47         authnotrequired => ( C4::Context->preference("OpacPublic") ? 1 : 0 ),
  48         debug           => 1,
  49     }
  50 );
  51
  52 my $number = $query->param('number') || 100;
  53
  54 my $sth = $dbh->prepare("SELECT entry,weight FROM tags ORDER BY weight DESC LIMIT ?");
  55 $sth->execute($number);
  56
  57 my %result;
  58 my $max=0;
  59 my $min=9999;
  60 my ($entry,$weight);
  61 while (($entry,$weight) = $sth->fetchrow) {
  62     $result{$entry}=$weight;
  63     $max = $weight if $weight > $max;
  64     $min = $weight if $weight < $min;
  65 }
  66
  67 $min++ if $min == $max;
  68
  69 my @loop;
  70 foreach my $entry (sort keys %result) {
  71     my %line;
  72     $line{entry} = $entry;
  73     $line{weight} = int(($result{$entry}-$min)/($max-$min)*25)+10;
  74     push @loop, \%line;
  75 }
  76 $template->param(
  77     LOOP => \@loop,
  78     number => $number
  79 );
  80
  81 output_html_with_http_headers $query, $cookie, $template->output;