C4/NewsChannels.pm

   1 package C4::NewsChannels;
   2
   3 # This file is part of Koha.
   4 #
   5 # Copyright (C) 2000-2002  Katipo Communications
   6 # Copyright (C) 2013       Mark Tompsett
   7 #
   8 # Koha is free software; you can redistribute it and/or modify it
   9 # under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 3 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # Koha is distributed in the hope that it will be useful, but
  14 # WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  20
  21 use Modern::Perl;
  22 use C4::Context;
  23 use Koha::DateUtils;
  24
  25 use vars qw(@ISA @EXPORT);
  26
  27 BEGIN {
  28     @ISA = qw(Exporter);
  29     @EXPORT = qw(
  30         &GetNewsToDisplay
  31         &add_opac_new &upd_opac_new &del_opac_new &get_opac_new &get_opac_news
  32     );
  33 }
  34
  35 =head1 NAME
  36
  37 C4::NewsChannels - Functions to manage OPAC and intranet news
  38
  39 =head1 DESCRIPTION
  40
  41 This module provides the functions needed to mange OPAC and intranet news.
  42
  43 =head1 FUNCTIONS
  44
  45 =cut
  46
  47 =head2 add_opac_new
  48
  49     $retval = add_opac_new($hashref);
  50
  51     $hashref should contains all the fields found in opac_news,
  52     except idnew. The idnew field is auto-generated.
  53
  54 =cut
  55
  56 sub add_opac_new {
  57     my ($href_entry) = @_;
  58     my $retval = 0;
  59
  60     if ($href_entry) {
  61         $href_entry->{number} = 0 if $href_entry->{number} !~ /^\d+$/;
  62         my @fields = keys %{$href_entry};
  63         my @values = values %{$href_entry};
  64         my $field_string = join ',', @fields;
  65         $field_string = $field_string // q{};
  66         my $values_string = join(',', map { '?' } @fields);
  67         my $dbh = C4::Context->dbh;
  68         my $sth = $dbh->prepare("INSERT INTO opac_news ( $field_string ) VALUES ( $values_string )");
  69         $sth->execute(@values);
  70         $retval = 1;
  71     }
  72     return $retval;
  73 }
  74
  75 =head2 upd_opac_new
  76
  77     $retval = upd_opac_new($hashref);
  78
  79     $hashref should contains all the fields found in opac_news,
  80     including idnew, since it is the key for the SQL UPDATE.
  81
  82 =cut
  83
  84 sub upd_opac_new {
  85     my ($href_entry) = @_;
  86     my $retval = 0;
  87
  88     if ($href_entry) {
  89         $href_entry->{number} = 0 if $href_entry->{number} !~ /^\d+$/;
  90         # take the keys of hash entry and make a list, but...
  91         my @fields = keys %{$href_entry};
  92         my @values;
  93         $#values = -1;
  94         my $field_string = q{};
  95         foreach my $field_name (@fields) {
  96             # exclude idnew
  97             if ( $field_name ne 'idnew' ) {
  98                 $field_string = $field_string . "$field_name = ?,";
  99                 push @values,$href_entry->{$field_name};
 100             }
 101         }
 102         # put idnew at the end, so we know which record to update
 103         push @values,$href_entry->{'idnew'};
 104         chop $field_string; # remove that excess ,
 105
 106         my $dbh = C4::Context->dbh;
 107         my $sth = $dbh->prepare("UPDATE opac_news SET $field_string WHERE idnew = ?;");
 108         $sth->execute(@values);
 109         $retval = 1;
 110     }
 111     return $retval;
 112 }
 113
 114 sub del_opac_new {
 115     my ($ids) = @_;
 116     if ($ids) {
 117         my $dbh = C4::Context->dbh;
 118         my $sth = $dbh->prepare("DELETE FROM opac_news WHERE idnew IN ($ids)");
 119         $sth->execute();
 120         return 1;
 121     } else {
 122         return 0;
 123     }
 124 }
 125
 126 sub get_opac_new {
 127     my ($idnew) = @_;
 128     my $dbh = C4::Context->dbh;
 129     my $query = q{
 130                   SELECT opac_news.*,branches.branchname
 131                   FROM opac_news LEFT JOIN branches
 132                       ON opac_news.branchcode=branches.branchcode
 133                   WHERE opac_news.idnew = ?;
 134                 };
 135     my $sth = $dbh->prepare($query);
 136     $sth->execute($idnew);
 137     my $data = $sth->fetchrow_hashref;
 138     $data->{expirationdate} = output_pref({ dt => dt_from_string( $data->{expirationdate} ), dateonly => 1 }) if ( $data->{expirationdate} );
 139     $data->{published_on} = output_pref({ dt => dt_from_string( $data->{published_on} ), dateonly => 1 });
 140     return $data;
 141 }
 142
 143 sub get_opac_news {
 144     my ($limit, $lang, $branchcode) = @_;
 145     my @values;
 146     my $dbh = C4::Context->dbh;
 147     my $query = q{
 148                   SELECT opac_news.*, branches.branchname,
 149                          published_on AS newdate,
 150                          borrowers.title AS author_title,
 151                          borrowers.firstname AS author_firstname,
 152                          borrowers.surname AS author_surname
 153                   FROM opac_news LEFT JOIN branches
 154                       ON opac_news.branchcode=branches.branchcode
 155                   LEFT JOIN borrowers on borrowers.borrowernumber = opac_news.borrowernumber
 156                 };
 157     $query .= ' WHERE 1';
 158     if ($lang) {
 159         $query .= " AND (opac_news.lang='' OR opac_news.lang=?)";
 160         push @values,$lang;
 161     }
 162     if ($branchcode) {
 163         $query .= ' AND (opac_news.branchcode IS NULL OR opac_news.branchcode=?)';
 164         push @values,$branchcode;
 165     }
 166     $query.= ' ORDER BY published_on DESC ';
 167     #if ($limit) {
 168     #    $query.= 'LIMIT 0, ' . $limit;
 169     #}
 170     my $sth = $dbh->prepare($query);
 171     $sth->execute(@values);
 172     my @opac_news;
 173     my $count = 0;
 174     while (my $row = $sth->fetchrow_hashref) {
 175         if ((($limit) && ($count < $limit)) || (!$limit)) {
 176             push @opac_news, $row;
 177         }
 178         $count++;
 179     }
 180     return ($count, \@opac_news);
 181 }
 182
 183 =head2 GetNewsToDisplay
 184
 185     $news = &GetNewsToDisplay($lang,$branch);
 186     C<$news> is a ref to an array which contains
 187     all news with expirationdate > today or expirationdate is null
 188     that is applicable for a given branch.
 189
 190 =cut
 191
 192 sub GetNewsToDisplay {
 193     my ($lang,$branch) = @_;
 194     my $dbh = C4::Context->dbh;
 195     my $query = q{
 196      SELECT opac_news.*,published_on AS newdate,
 197      borrowers.title AS author_title,
 198      borrowers.firstname AS author_firstname,
 199      borrowers.surname AS author_surname
 200      FROM   opac_news
 201      LEFT JOIN borrowers on borrowers.borrowernumber = opac_news.borrowernumber
 202      WHERE   (
 203         expirationdate >= CURRENT_DATE()
 204         OR    expirationdate IS NULL
 205      )
 206      AND   published_on <= CURDATE()
 207      AND   (opac_news.lang = '' OR opac_news.lang = ?)
 208      AND   (opac_news.branchcode IS NULL OR opac_news.branchcode = ?)
 209      ORDER BY number
 210     };
 211     my $sth = $dbh->prepare($query);
 212     $lang = $lang // q{};
 213     $sth->execute($lang,$branch);
 214     my @results;
 215     while ( my $row = $sth->fetchrow_hashref ){
 216         $row->{newdate} = output_pref({ dt => dt_from_string( $row->{newdate} ), dateonly => 1 });
 217         push @results, $row;
 218     }
 219     return \@results;
 220 }
 221
 222 1;
 223 __END__
 224
 225 =head1 AUTHOR
 226
 227 TG
 228
 229 =cut