Koha/UploadedFiles.pm

   1 package Koha::UploadedFiles;
   2
   3 # Copyright Rijksmuseum 2016
   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 use Modern::Perl;
  21
  22 use C4::Koha;
  23 use Koha::Database;
  24 use Koha::DateUtils;
  25 use Koha::UploadedFile;
  26
  27 use parent qw(Koha::Objects);
  28
  29 =head1 NAME
  30
  31 Koha::UploadedFiles - Koha::Objects class for uploaded files
  32
  33 =head1 SYNOPSIS
  34
  35     use Koha::UploadedFiles;
  36
  37     # get one upload
  38     my $upload01 = Koha::UploadedFiles->find( $id );
  39
  40     # get some uploads
  41     my @uploads = Koha::UploadedFiles->search_term({ term => '.mrc' });
  42
  43     # delete all uploads
  44     Koha::UploadedFiles->delete;
  45
  46 =head1 DESCRIPTION
  47
  48 Allows regular CRUD operations on uploaded_files via Koha::Objects / DBIx.
  49
  50 The delete method also takes care of deleting files. The search_term method
  51 provides a wrapper around search to look for a term in multiple columns.
  52
  53 =head1 METHODS
  54
  55 =head2 INSTANCE METHODS
  56
  57 =head3 delete
  58
  59 Delete uploaded files.
  60
  61 Parameter keep_file may be used to delete records, but keep files.
  62
  63 Returns the number of deleted records, 0E0 or -1 (Unknown).
  64 Please note that the number of deleted records is not automatically the same
  65 as the number of files.
  66
  67 =cut
  68
  69 sub delete {
  70     my ( $self, $params ) = @_;
  71     $self = Koha::UploadedFiles->new if !ref($self); # handle class call
  72     # We use the individual delete on each resultset record
  73     my $rv = 0;
  74     while( my $row = $self->next ) {
  75         my $deleted = eval { $row->delete( $params ) };
  76         $rv++ if $deleted && !$@;
  77     }
  78     return $rv==0 ? "0E0" : $rv;
  79 }
  80
  81 =head3 delete_temporary
  82
  83 Delete_temporary is called by cleanup_database and only removes temporary
  84 uploads older than [pref UploadPurgeTemporaryFilesDays] days.
  85 It is possible to override the pref with the override_pref parameter.
  86
  87 Return value: see delete.
  88
  89 =cut
  90
  91 sub delete_temporary {
  92     my ( $self, $params ) = @_;
  93     my $days = C4::Context->preference('UploadPurgeTemporaryFilesDays');
  94     if( exists $params->{override_pref} ) {
  95         $days = $params->{override_pref};
  96     } elsif( !defined($days) || $days eq '' ) { # allow 0, not NULL or ""
  97         return "0E0";
  98     }
  99     my $dt = dt_from_string();
 100     $dt->subtract( days => $days );
 101     my $parser = Koha::Database->new->schema->storage->datetime_parser;
 102     return $self->search({
 103         permanent => [ undef, 0 ],
 104         dtcreated => { '<' => $parser->format_datetime($dt) },
 105     })->delete;
 106 }
 107
 108 =head3 delete_missing
 109
 110     $cnt = Koha::UploadedFiles->delete_missing();
 111
 112     $cnt = Koha::UploadedFiles->delete_missing({ keep_record => 1 });
 113
 114 Deletes all records where the actual file is not found.
 115
 116 Supports a keep_record hash parameter to do a check only.
 117
 118 Return value: If you pass keep_record, it returns the number of records where
 119 the file is not found, or 0E0. Otherwise it returns a number, 0E0 or -1 just
 120 as delete does.
 121
 122 =cut
 123
 124 sub delete_missing {
 125     my ( $self, $params ) = @_;
 126     $self = Koha::UploadedFiles->new if !ref($self); # handle class call
 127     my $rv = 0;
 128     while( my $row = $self->next ) {
 129         my $file = $row->full_path;
 130         next if -e $file;
 131         if( $params->{keep_record} ) {
 132             $rv++;
 133             next;
 134         }
 135         # We are passing keep_file since we already know that the file
 136         # is missing and we do not want to see the warning
 137         # Apply the same logic as in delete for the return value
 138         my $deleted = eval { $row->delete({ keep_file => 1 }) };
 139         $rv++ if $deleted && !$@;
 140     }
 141     return $rv==0 ? "0E0" : $rv;
 142 }
 143
 144 =head3 search_term
 145
 146 Search_term allows you to pass a term to search in filename and hashvalue.
 147 If you do not pass include_private, only public records are returned.
 148
 149 Is only a wrapper around Koha::Objects search. Has similar return value.
 150
 151 =cut
 152
 153 sub search_term {
 154     my ( $self, $params ) = @_;
 155     my $term = $params->{term} // '';
 156     my %public = ();
 157     if( !$params->{include_private} ) {
 158         %public = ( public => 1 );
 159     }
 160     return $self->search(
 161         [ { filename => { like => '%'.$term.'%' }, %public },
 162           { hashvalue => { like => '%'.$params->{term}.'%' }, %public } ],
 163         { order_by => { -asc => 'id' }},
 164     );
 165 }
 166
 167 =head2 CLASS METHODS
 168
 169 =head3 getCategories
 170
 171 getCategories returns a list of upload category codes and names
 172
 173 =cut
 174
 175 sub getCategories {
 176     my ( $class ) = @_;
 177     my $cats = C4::Koha::GetAuthorisedValues('UPLOAD');
 178     [ map {{ code => $_->{authorised_value}, name => $_->{lib} }} @$cats ];
 179 }
 180
 181 =head3 _type
 182
 183 Returns name of corresponding DBIC resultset
 184
 185 =cut
 186
 187 sub _type {
 188     return 'UploadedFile';
 189 }
 190
 191 =head3 object_class
 192
 193 Returns name of corresponding Koha object class
 194
 195 =cut
 196
 197 sub object_class {
 198     return 'Koha::UploadedFile';
 199 }
 200
 201 =head1 AUTHOR
 202
 203 Marcel de Rooy (Rijksmuseum)
 204
 205 Koha Development Team
 206
 207 =cut
 208
 209 1;