1 package Koha::Filter::MARC::ViewPolicy;
3 # Copyright 2015 Mark Tompsett
5 # This file is part of Koha.
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.
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.
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>.
22 Koha::Filter::MARC::ViewPolicy - this filters a MARC record.
30 my $processor = Koha::RecordProcessor->new( { filters => ('ViewPolicy') } );
34 Filter to remove fields based on the 'Advance constraints'
35 settings found when editing a particular subfield definition of
36 a MARC bibliographic framework found under the Koha administration
45 use base qw(Koha::RecordProcessor::Base);
46 our $NAME = 'MARC_ViewPolicy';
47 our $VERSION = '3.23'; # Master version I hope it gets in.
49 use constant FIRST_NONCONTROL_TAG => 10; # tags < 10 are control tags.
51 =head1 SUBROUTINES/METHODS
55 my $processor = Koha::RecordProcessor->new( { filters => ('ViewPolicy') } );
57 my $newrecord = $processor->filter($record);
58 my $newrecords = $processor->filter(\@records);
60 This returns a filtered copy of the record based on the Advanced constraints
74 if ( ref($precord) eq 'ARRAY' ) {
75 @records = @{$precord};
78 push @records, $precord;
81 foreach my $current_record (@records) {
82 my $result = $current_record;
83 my $interface = $self->{options}->{interface} // 'opac';
84 my $frameworkcode = $self->{options}->{frameworkcode} // q{};
85 my $hide = _should_hide_on_interface();
87 my $marcsubfieldstructure = GetMarcStructure( 0, $frameworkcode );
89 #if ($marcsubfieldstructure->{'000'}->{'@'}->{hidden}>0) {
90 # LDR field is excluded from $current_record->fields().
91 # if we hide it here, the MARCXML->MARC::Record->MARCXML
92 # transformation blows up.
94 foreach my $field ( $result->fields() ) {
98 marcsubfieldstructure => $marcsubfieldstructure,
100 interface => $interface,
110 my ($parameter) = @_;
112 my $field = $parameter->{field};
113 my $marcsubfieldstructure = $parameter->{marcsubfieldstructure};
114 my $hide = $parameter->{hide};
115 my $interface = $parameter->{interface};
116 my $result = $parameter->{result};
118 my $tag = $field->tag();
119 if ( $tag >= FIRST_NONCONTROL_TAG ) {
120 foreach my $subpairs ( $field->subfields() ) {
121 my ( $subtag, $value ) = @{$subpairs};
123 # visibility is a "level" (-9 to +9), default to 0
124 # -8 is flagged, and 9/-9 are not implemented.
126 $marcsubfieldstructure->{$tag}->{$subtag}->{hidden};
128 if ( $hide->{$interface}->{$visibility} ) {
130 # deleting last subfield doesn't delete field, so
131 # this detects that case to delete the field.
132 if ( scalar $field->subfields() <= 1 ) {
133 $result->delete_fields($field);
136 $field->delete_subfield( code => $subtag );
142 # control tags don't have subfields, use @ trick.
144 # visibility is a "level" (-9 to +9), default to 0
145 # -8 is flagged, and 9/-9 are not implemented.
146 my $visibility = $marcsubfieldstructure->{$tag}->{q{@}}->{hidden};
148 if ( $hide->{$interface}->{$visibility} ) {
149 $result->delete_fields($field);
160 my $options = $param->{options};
161 $self->{options} = $options;
162 $self->Koha::RecordProcessor::Base::initialize($param);
166 # Copied and modified from 3.10.x help file
167 # marc_subfields_structure.hidden
168 # allows you to select from 19 possible visibility conditions, 17 of which are implemented. They are the following:
171 # -7 => OPAC !Intranet !Editor Collapsed
172 # -6 => OPAC Intranet !Editor !Collapsed
173 # -5 => OPAC Intranet !Editor Collapsed
174 # -4 => OPAC !Intranet !Editor !Collapsed
175 # -3 => OPAC !Intranet Editor Collapsed
176 # -2 => OPAC !Intranet Editor !Collapsed
177 # -1 => OPAC Intranet Editor Collapsed
178 # 0 => OPAC Intranet Editor !Collapsed
179 # 1 => !OPAC Intranet Editor Collapsed
180 # 2 => !OPAC !Intranet Editor !Collapsed
181 # 3 => !OPAC !Intranet Editor Collapsed
182 # 4 => !OPAC Intranet Editor !Collapsed
183 # 5 => !OPAC !Intranet !Editor Collapsed
184 # 6 => !OPAC Intranet !Editor !Collapsed
185 # 7 => !OPAC Intranet !Editor Collapsed
186 # 8 => !OPAC !Intranet !Editor !Collapsed
188 # ( ! means 'not visible' or in the case of Collapsed 'not Collapsed')
190 sub _should_hide_on_interface {
220 $ prove -v t/RecordProcessor.t
221 $ prove -v t/db_dependent/Filter_MARC_ViewPolicy.t
223 =head1 CONFIGURATION AND ENVIRONMENT
225 Install Koha. This filter will be used appropriately by the OPAC or Staff client.
227 =head1 INCOMPATIBILITIES
229 This is designed for MARC::Record filtering currently. It will not handle MARC::MARCXML.
233 The following Perl libraries are required: Modern::Perl and Carp.
234 The following Koha libraries are required: C4::Biblio, Koha::RecordProcessor, and Koha::RecordProcessor::Base.
235 These should all be installed if the koha-common package is installed or Koha is otherwise installed.
237 =head1 BUGS AND LIMITATIONS
239 This is the initial version. Please feel free to report bugs
240 at http://bugs.koha-community.org/.
246 =head1 LICENSE AND COPYRIGHT
248 Copyright 2015 Mark Tompsett
250 This file is part of Koha.
252 Koha is free software; you can redistribute it and/or modify it
253 under the terms of the GNU General Public License as published by
254 the Free Software Foundation; either version 3 of the License, or
255 (at your option) any later version.
257 Koha is distributed in the hope that it will be useful, but
258 WITHOUT ANY WARRANTY; without even the implied warranty of
259 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
260 GNU General Public License for more details.
262 You should have received a copy of the GNU General Public License
263 along with Koha; if not, see <http://www.gnu.org/licenses>.