Koha-clms/C4/Members/Attributes.pm

200 lines
6.4 KiB
Perl

package C4::Members::Attributes;
# Copyright (C) 2008 LibLime
#
# 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 3 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, see <http://www.gnu.org/licenses>.
use strict;
use warnings;
use Text::CSV; # Don't be tempted to use Text::CSV::Unicode -- even in binary mode it fails.
use C4::Context;
use C4::Members::AttributeTypes;
use vars qw(@ISA @EXPORT_OK @EXPORT %EXPORT_TAGS);
our ($csv, $AttributeTypes);
BEGIN {
@ISA = qw(Exporter);
@EXPORT_OK = qw(CheckUniqueness
extended_attributes_code_value_arrayref extended_attributes_merge
SearchIdMatchingAttribute);
%EXPORT_TAGS = ( all => \@EXPORT_OK );
}
=head1 NAME
C4::Members::Attributes - manage extend patron attributes
=head1 SYNOPSIS
use C4::Members::Attributes;
=head1 FUNCTIONS
=head2 SearchIdMatchingAttribute
my $matching_borrowernumbers = C4::Members::Attributes::SearchIdMatchingAttribute($filter);
=cut
sub SearchIdMatchingAttribute{
my $filter = shift;
$filter = [$filter] unless ref $filter;
my $dbh = C4::Context->dbh();
my $query = qq{
SELECT DISTINCT borrowernumber
FROM borrower_attributes
JOIN borrower_attribute_types USING (code)
WHERE staff_searchable = 1
AND (} . join (" OR ", map "attribute like ?", @$filter) .qq{)};
my $sth = $dbh->prepare_cached($query);
$sth->execute(map "%$_%", @$filter);
return [map $_->[0], @{ $sth->fetchall_arrayref }];
}
=head2 CheckUniqueness
my $ok = CheckUniqueness($code, $value[, $borrowernumber]);
Given an attribute type and value, verify if would violate
a unique_id restriction if added to the patron. The
optional C<$borrowernumber> is the patron that the attribute
value would be added to, if known.
Returns false if the C<$code> is not valid or the
value would violate the uniqueness constraint.
=cut
sub CheckUniqueness {
my $code = shift;
my $value = shift;
my $borrowernumber = @_ ? shift : undef;
my $attr_type = C4::Members::AttributeTypes->fetch($code);
return 0 unless defined $attr_type;
return 1 unless $attr_type->unique_id();
my $dbh = C4::Context->dbh;
my $sth;
if (defined($borrowernumber)) {
$sth = $dbh->prepare("SELECT COUNT(*)
FROM borrower_attributes
WHERE code = ?
AND attribute = ?
AND borrowernumber <> ?");
$sth->execute($code, $value, $borrowernumber);
} else {
$sth = $dbh->prepare("SELECT COUNT(*)
FROM borrower_attributes
WHERE code = ?
AND attribute = ?");
$sth->execute($code, $value);
}
my ($count) = $sth->fetchrow_array;
return ($count == 0);
}
=head2 extended_attributes_code_value_arrayref
my $patron_attributes = "homeroom:1150605,grade:01,extradata:foobar";
my $aref = extended_attributes_code_value_arrayref($patron_attributes);
Takes a comma-delimited CSV-style string argument and returns the kind of data structure that Koha::Patron->extended_attributes wants,
namely a reference to array of hashrefs like:
[ { code => 'CODE', attribute => 'value' }, { code => 'CODE2', attribute => 'othervalue' } ... ]
Caches Text::CSV parser object for efficiency.
=cut
sub extended_attributes_code_value_arrayref {
my $string = shift or return;
$csv or $csv = Text::CSV->new({binary => 1}); # binary needed for non-ASCII Unicode
my $ok = $csv->parse($string); # parse field again to get subfields!
my @list = $csv->fields();
# TODO: error handling (check $ok)
return [
sort {&_sort_by_code($a,$b)}
map { map { my @arr = split /:/, $_, 2; { code => $arr[0], attribute => $arr[1] } } $_ }
@list
];
# nested map because of split
}
=head2 extended_attributes_merge
my $old_attributes = extended_attributes_code_value_arrayref("homeroom:224,grade:04,deanslist:2007,deanslist:2008,somedata:xxx");
my $new_attributes = extended_attributes_code_value_arrayref("homeroom:115,grade:05,deanslist:2009,extradata:foobar");
my $merged = extended_attributes_merge($patron_attributes, $new_attributes, 1);
# assuming deanslist is a repeatable code, value same as:
# $merged = extended_attributes_code_value_arrayref("homeroom:115,grade:05,deanslist:2007,deanslist:2008,deanslist:2009,extradata:foobar,somedata:xxx");
Takes three arguments. The first two are references to array of hashrefs, each like:
[ { code => 'CODE', value => 'value' }, { code => 'CODE2', value => 'othervalue' } ... ]
The third option specifies whether repeatable codes are clobbered or collected. True for non-clobber.
Returns one reference to (merged) array of hashref.
Caches results of C4::Members::AttributeTypes::GetAttributeTypes_hashref(1) for efficiency.
=cut
sub extended_attributes_merge {
my $old = shift or return;
my $new = shift or return $old;
my $keep = @_ ? shift : 0;
$AttributeTypes or $AttributeTypes = C4::Members::AttributeTypes::GetAttributeTypes_hashref(1);
my @merged = @$old;
foreach my $att (@$new) {
unless ($att->{code}) {
warn "Cannot merge element: no 'code' defined";
next;
}
unless ($AttributeTypes->{$att->{code}}) {
warn "Cannot merge element: unrecognized code = '$att->{code}'";
next;
}
unless ($AttributeTypes->{$att->{code}}->{repeatable} and $keep) {
@merged = grep {$att->{code} ne $_->{code}} @merged; # filter out any existing attributes of the same code
}
push @merged, $att;
}
return [( sort {&_sort_by_code($a,$b)} @merged )];
}
sub _sort_by_code {
my ($x, $y) = @_;
defined ($x->{code}) or return -1;
defined ($y->{code}) or return 1;
return $x->{code} cmp $y->{code} || $x->{value} cmp $y->{value};
}
=head1 AUTHOR
Koha Development Team <http://koha-community.org/>
Galen Charlton <galen.charlton@liblime.com>
=cut
1;