Koha/C4/NewsChannels.pm
2009-05-11 14:12:59 -05:00

425 lines
12 KiB
Perl

package C4::NewsChannels;
# Copyright 2000-2002 Katipo Communications
#
# This file is part of Koha.
#
# 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 2 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, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
use strict;
use C4::Context;
use C4::Dates qw(format_date);
use vars qw($VERSION @ISA @EXPORT);
BEGIN {
$VERSION = 3.01; # set the version for version checking
@ISA = qw(Exporter);
@EXPORT = qw(
&GetNewsToDisplay
&news_channels &get_new_channel &del_channels &add_channel &update_channel
&news_channels_categories &get_new_channel_category &del_channels_categories
&add_channel_category &update_channel_category &news_channels_by_category
&add_opac_new &upd_opac_new &del_opac_new &get_opac_new &get_opac_news
&add_opac_electronic &upd_opac_electronic &del_opac_electronic &get_opac_electronic &get_opac_electronics
);
}
=head1 NAME
C4::NewsChannels - Functions to manage the news channels and its categories
=head1 DESCRIPTION
This module provides the functions needed to admin the news channels and its categories
=head1 FUNCTIONS
=head2 news_channels
($count, @channels) = &news_channels($channel_name, $id_category, $unclassified);
Looks up news channels by name or category.
C<$channel_name> is the channel name to search.
C<$id_category> is the channel category code to search.
C<$$unclassified> if it is set and $channel_name and $id_category search for the news channels without a category
if none of the params are set C<&news_channels> returns all the news channels.
C<&news_channels> returns two values: an integer giving the number of
news channels found and a reference to an array
of references to hash, which has the news_channels and news_channels_categories fields.
=cut
sub news_channels {
my ($channel_name, $id_category, $unclassified) = @_;
my $dbh = C4::Context->dbh;
my @channels;
my $query = "SELECT * FROM news_channels LEFT JOIN news_channels_categories ON news_channels.id_category = news_channels_categories.id_category";
if ( ($channel_name ne '') && ($id_category ne '') ) {
$query.= " WHERE channel_name like '" . $channel_name . "%' AND news_channels.id_category = " . $id_category;
} elsif ($channel_name ne '') {
$query.= " WHERE channel_name like '" . $channel_name . "%'";
} elsif ($id_category ne '') {
$query.= " WHERE news_channels.id_category = " . $id_category;
} elsif ($unclassified) {
$query.= " WHERE news_channels.id_category IS NULL ";
}
my $sth = $dbh->prepare($query);
$sth->execute();
while (my $row = $sth->fetchrow_hashref) {
push @channels, $row;
}
$sth->finish;
return (scalar(@channels), @channels);
}
=head2 news_channels_by_category
($count, @results) = &news_channels_by_category();
Looks up news channels grouped by category.
C<&news_channels_by_category> returns two values: an integer giving the number of
categories found and a reference to an array
of references to hash, which the following keys:
=over 4
=item C<channels_count>
The number of news channels in that category
=item C<channels>
A reference to an array of references to hash which keys are the new_channels fields.
Additionally the last index of results has a reference to all the news channels which don't have a category
=back
=cut
sub news_channels_by_category {
my ($categories_count, @results) = &news_channels_categories();
foreach my $row (@results) {
my ($channels_count, @channels) = &news_channels('', $row->{'id_category'});
$row->{'channels_count'} = $channels_count;
$row->{'channels'} = \@channels;
}
my ($channels_count, @channels) = &news_channels('', '', 1);
my %row;
$row{'id_category'} = -1;
$row{'unclassified'} = 1;
$row{'channels_count'} = $channels_count;
$row{'channels'} = \@channels;
push @results, \%row;
return (scalar(@results), @results);
}
sub get_new_channel {
my ($id) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("SELECT * FROM news_channels WHERE id = ?");
$sth->execute($id);
my $channel = $sth->fetchrow_hashref;
$sth->finish;
return $channel;
}
sub del_channels {
my ($ids) = @_;
if ($ids ne '') {
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("DELETE FROM news_channels WHERE id IN ($ids) ");
$sth->execute();
$sth->finish;
return $ids;
}
return 0;
}
sub add_channel {
my ($name, $url, $id_category, $notes) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("INSERT INTO news_channels (channel_name, url, id_category, notes) VALUES (?,?,?,?)");
$sth->execute($name, $url, $id_category, $notes);
$sth->finish;
return 1;
}
sub update_channel {
my ($id, $name, $url, $id_category, $notes) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("UPDATE news_channels SET channel_name = ?, url = ?, id_category = ?, notes = ? WHERE id = ?");
$sth->execute($name, $url, $id_category, $notes, $id);
$sth->finish;
return 1;
}
sub news_channels_categories {
my $dbh = C4::Context->dbh;
my @categories;
my $query = "SELECT * FROM news_channels_categories";
my $sth = $dbh->prepare($query);
$sth->execute();
while (my $row = $sth->fetchrow_hashref) {
push @categories, $row;
}
$sth->finish;
return (scalar(@categories), @categories);
}
sub get_new_channel_category {
my ($id) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("SELECT * FROM news_channels_categories WHERE id_category = ?");
$sth->execute($id);
my $category = $sth->fetchrow_hashref;
$sth->finish;
return $category;
}
sub del_channels_categories {
my ($ids) = @_;
if ($ids ne '') {
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("UPDATE news_channels SET id_category = NULL WHERE id_category IN ($ids) ");
$sth->execute();
$sth = $dbh->prepare("DELETE FROM news_channels_categories WHERE id_category IN ($ids) ");
$sth->execute();
$sth->finish;
return $ids;
}
return 0;
}
sub add_channel_category {
my ($name) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("INSERT INTO news_channels_categories (category_name) VALUES (?)");
$sth->execute($name);
$sth->finish;
return 1;
}
sub update_channel_category {
my ($id, $name) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("UPDATE news_channels_categories SET category_name = ? WHERE id_category = ?");
$sth->execute($name, $id);
$sth->finish;
return 1;
}
sub add_opac_new {
my ($title, $new, $lang, $expirationdate, $timestamp, $number) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("INSERT INTO opac_news (title, new, lang, expirationdate, timestamp, number) VALUES (?,?,?,?,?,?)");
$sth->execute($title, $new, $lang, $expirationdate, $timestamp, $number);
$sth->finish;
return 1;
}
sub upd_opac_new {
my ($idnew, $title, $new, $lang, $expirationdate, $timestamp,$number) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("
UPDATE opac_news SET
title = ?,
new = ?,
lang = ?,
expirationdate = ?,
timestamp = ?,
number = ?
WHERE idnew = ?
");
$sth->execute($title, $new, $lang, $expirationdate, $timestamp,$number,$idnew);
$sth->finish;
return 1;
}
sub del_opac_new {
my ($ids) = @_;
if ($ids) {
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("DELETE FROM opac_news WHERE idnew IN ($ids)");
$sth->execute();
$sth->finish;
return 1;
} else {
return 0;
}
}
sub get_opac_new {
my ($idnew) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("SELECT * FROM opac_news WHERE idnew = ?");
$sth->execute($idnew);
my $data = $sth->fetchrow_hashref;
$data->{$data->{'lang'}} = 1;
$data->{expirationdate} = format_date($data->{expirationdate});
$data->{timestamp} = format_date($data->{timestamp});
$sth->finish;
return $data;
}
sub get_opac_news {
my ($limit, $lang) = @_;
my $dbh = C4::Context->dbh;
my $query = "SELECT *, timestamp AS newdate FROM opac_news";
if ($lang) {
$query.= " WHERE lang = '" .$lang ."' ";
}
$query.= " ORDER BY timestamp DESC ";
#if ($limit) {
# $query.= "LIMIT 0, " . $limit;
#}
my $sth = $dbh->prepare($query);
$sth->execute();
my @opac_news;
my $count = 0;
while (my $row = $sth->fetchrow_hashref) {
if ((($limit) && ($count < $limit)) || (!$limit)) {
$row->{'newdate'} = format_date($row->{'newdate'});
$row->{'expirationdate'} = format_date($row->{'expirationdate'});
push @opac_news, $row;
}
$count++;
}
return ($count, \@opac_news);
}
=head2 GetNewsToDisplay
$news = &GetNewsToDisplay($lang);
C<$news> is a ref to an array which containts
all news with expirationdate > today or expirationdate is null.
=cut
sub GetNewsToDisplay {
my $lang = shift;
my $dbh = C4::Context->dbh;
# SELECT *,DATE_FORMAT(timestamp, '%d/%m/%Y') AS newdate
my $query = "
SELECT *,timestamp AS newdate
FROM opac_news
WHERE (
expirationdate > CURRENT_DATE()
OR expirationdate IS NULL
OR expirationdate = '00-00-0000'
)
AND `timestamp` < CURRENT_DATE()
AND lang = ?
ORDER BY number
"; # expirationdate field is NOT in ISO format?
my $sth = $dbh->prepare($query);
$sth->execute($lang);
my @results;
while ( my $row = $sth->fetchrow_hashref ){
$row->{newdate} = format_date($row->{newdate});
push @results, $row;
}
return \@results;
}
### get electronic databases
sub add_opac_electronic {
my ($title, $edata, $lang,$image,$href,$section) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("INSERT INTO opac_electronic (title, edata, lang,image,href,section) VALUES (?,?,?,?,?,?)");
$sth->execute($title, $edata, $lang,$image,$href,$section);
$sth->finish;
return 1;
}
sub upd_opac_electronic {
my ($idelectronic, $title, $edata, $lang, $image, $href,$section) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("UPDATE opac_electronic SET title = ?, edata = ?, lang = ? , image=?, href=? ,section=? WHERE idelectronic = ?");
$sth->execute($title, $edata, $lang, $image,$href ,$section, $idelectronic);
$sth->finish;
return 1;
}
sub del_opac_electronic {
my ($ids) = @_;
if ($ids) {
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("DELETE FROM opac_electronic WHERE idelectronic IN ($ids)");
$sth->execute();
$sth->finish;
return 1;
} else {
return 0;
}
}
sub get_opac_electronic {
my ($idelectronic) = @_;
my $dbh = C4::Context->dbh;
my $sth = $dbh->prepare("SELECT * FROM opac_electronic WHERE idelectronic = ?");
$sth->execute($idelectronic);
my $data = $sth->fetchrow_hashref;
$data->{$data->{'lang'}} = 1;
$data->{$data->{'section'}} = 1;
$sth->finish;
return $data;
}
sub get_opac_electronics {
my ($section, $lang) = @_;
my $dbh = C4::Context->dbh;
my $query = "SELECT *, DATE_FORMAT(timestamp, '%d/%m/%Y') AS newdate FROM opac_electronic";
if ($lang) {
$query.= " WHERE lang = '" .$lang ."' ";
}
if ($section) {
$query.= " and section= '" . $section."' ";
}
$query.= " ORDER BY title ";
my $sth = $dbh->prepare($query);
$sth->execute();
my @opac_electronic;
my $count = 0;
while (my $row = $sth->fetchrow_hashref) {
push @opac_electronic, $row;
$count++;
}
return ($count,\@opac_electronic);
}
1;
__END__
=head1 AUTHOR
TG
=cut