301 lines
9.2 KiB
Perl
301 lines
9.2 KiB
Perl
package C4::Members::Attributes;
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# Copyright (C) 2008 LibLime
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#
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# This file is part of Koha.
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#
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# Koha is free software; you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with Koha; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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use strict;
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use warnings;
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use Text::CSV; # Don't be tempted to use Text::CSV::Unicode -- even in binary mode it fails.
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use C4::Context;
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use C4::Members::AttributeTypes;
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use vars qw($VERSION @ISA @EXPORT_OK @EXPORT %EXPORT_TAGS);
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our ($csv, $AttributeTypes);
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BEGIN {
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# set the version for version checking
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$VERSION = 3.01;
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@ISA = qw(Exporter);
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@EXPORT_OK = qw(GetBorrowerAttributes CheckUniqueness SetBorrowerAttributes
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extended_attributes_code_value_arrayref extended_attributes_merge
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SearchIdMatchingAttribute);
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%EXPORT_TAGS = ( all => \@EXPORT_OK );
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}
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=head1 NAME
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C4::Members::Attributes - manage extend patron attributes
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=head1 SYNOPSIS
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=over 4
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use C4::Members::Attributes;
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my $attributes = C4::Members::Attributes::GetBorrowerAttributes($borrowernumber);
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=back
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=head1 FUNCTIONS
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=head2 GetBorrowerAttributes
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=over 4
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my $attributes = C4::Members::Attributes::GetBorrowerAttributes($borrowernumber[, $opac_only]);
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=back
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Retrieve an arrayref of extended attributes associated with the
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patron specified by C<$borrowernumber>. Each entry in the arrayref
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is a hashref containing the following keys:
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code (attribute type code)
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description (attribute type description)
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value (attribute value)
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value_description (attribute value description (if associated with an authorised value))
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password (password, if any, associated with attribute
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If the C<$opac_only> parameter is present and has a true value, only the attributes
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marked for OPAC display are returned.
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=cut
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sub GetBorrowerAttributes {
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my $borrowernumber = shift;
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my $opac_only = @_ ? shift : 0;
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my $dbh = C4::Context->dbh();
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my $query = "SELECT code, description, attribute, lib, password
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FROM borrower_attributes
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JOIN borrower_attribute_types USING (code)
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LEFT JOIN authorised_values ON (category = authorised_value_category AND attribute = authorised_value)
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WHERE borrowernumber = ?";
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$query .= "\nAND opac_display = 1" if $opac_only;
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$query .= "\nORDER BY code, attribute";
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my $sth = $dbh->prepare_cached($query);
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$sth->execute($borrowernumber);
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my @results = ();
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while (my $row = $sth->fetchrow_hashref()) {
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push @results, {
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code => $row->{'code'},
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description => $row->{'description'},
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value => $row->{'attribute'},
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value_description => $row->{'lib'},
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password => $row->{'password'},
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}
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}
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return \@results;
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}
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=head2 SearchIdMatchingAttribute
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=over 4
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my $matching_records = C4::Members::Attributes::SearchIdMatchingAttribute($filter);
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=back
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=cut
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sub SearchIdMatchingAttribute{
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my $filter = shift;
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my $dbh = C4::Context->dbh();
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my $query = qq{
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SELECT borrowernumber
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FROM borrower_attributes
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JOIN borrower_attribute_types USING (code)
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WHERE staff_searchable = 1
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AND attribute like ?};
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my $sth = $dbh->prepare_cached($query);
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$sth->execute($filter);
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return $sth->fetchall_arrayref;
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}
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=head2 CheckUniqueness
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=over 4
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my $ok = CheckUniqueness($code, $value[, $borrowernumber]);
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=back
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Given an attribute type and value, verify if would violate
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a unique_id restriction if added to the patron. The
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optional C<$borrowernumber> is the patron that the attribute
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value would be added to, if known.
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Returns false if the C<$code> is not valid or the
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value would violate the uniqueness constraint.
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=cut
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sub CheckUniqueness {
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my $code = shift;
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my $value = shift;
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my $borrowernumber = @_ ? shift : undef;
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my $attr_type = C4::Members::AttributeTypes->fetch($code);
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return 0 unless defined $attr_type;
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return 1 unless $attr_type->unique_id();
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my $dbh = C4::Context->dbh;
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my $sth;
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if (defined($borrowernumber)) {
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$sth = $dbh->prepare("SELECT COUNT(*)
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FROM borrower_attributes
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WHERE code = ?
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AND attribute = ?
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AND borrowernumber <> ?");
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$sth->execute($code, $value, $borrowernumber);
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} else {
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$sth = $dbh->prepare("SELECT COUNT(*)
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FROM borrower_attributes
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WHERE code = ?
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AND attribute = ?");
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$sth->execute($code, $value);
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}
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my ($count) = $sth->fetchrow_array;
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return ($count == 0);
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}
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=head2 SetBorrowerAttributes
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=over 4
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SetBorrowerAttributes($borrowernumber, [ { code => 'CODE', value => 'value', password => 'password' }, ... ] );
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=back
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Set patron attributes for the patron identified by C<$borrowernumber>,
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replacing any that existed previously.
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=cut
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sub SetBorrowerAttributes {
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my $borrowernumber = shift;
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my $attr_list = shift;
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my $dbh = C4::Context->dbh;
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my $delsth = $dbh->prepare("DELETE FROM borrower_attributes WHERE borrowernumber = ?");
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$delsth->execute($borrowernumber);
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my $sth = $dbh->prepare("INSERT INTO borrower_attributes (borrowernumber, code, attribute, password)
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VALUES (?, ?, ?, ?)");
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foreach my $attr (@$attr_list) {
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$attr->{password} = undef unless exists $attr->{password};
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$sth->execute($borrowernumber, $attr->{code}, $attr->{value}, $attr->{password});
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}
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}
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=head2 extended_attributes_code_value_arrayref
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=over 4
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my $patron_attributes = "homeroom:1150605,grade:01,extradata:foobar";
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my $aref = extended_attributes_code_value_arrayref($patron_attributes);
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=back
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Takes a comma-delimited CSV-style string argument and returns the kind of data structure that SetBorrowerAttributes wants,
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namely a reference to array of hashrefs like:
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[ { code => 'CODE', value => 'value' }, { code => 'CODE2', value => 'othervalue' } ... ]
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Caches Text::CSV parser object for efficiency.
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=cut
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sub extended_attributes_code_value_arrayref {
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my $string = shift or return;
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$csv or $csv = Text::CSV->new({binary => 1}); # binary needed for non-ASCII Unicode
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my $ok = $csv->parse($string); # parse field again to get subfields!
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my @list = $csv->fields();
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# TODO: error handling (check $ok)
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return [
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sort {&_sort_by_code($a,$b)}
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map { map { my @arr = split /:/, $_, 2; { code => $arr[0], value => $arr[1] } } $_ }
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@list
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];
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# nested map because of split
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}
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=head2 extended_attributes_merge
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=over 4
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my $old_attributes = extended_attributes_code_value_arrayref("homeroom:224,grade:04,deanslist:2007,deanslist:2008,somedata:xxx");
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my $new_attributes = extended_attributes_code_value_arrayref("homeroom:115,grade:05,deanslist:2009,extradata:foobar");
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my $merged = extended_attributes_merge($patron_attributes, $new_attributes, 1);
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# assuming deanslist is a repeatable code, value same as:
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# $merged = extended_attributes_code_value_arrayref("homeroom:115,grade:05,deanslist:2007,deanslist:2008,deanslist:2009,extradata:foobar,somedata:xxx");
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=back
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Takes three arguments. The first two are references to array of hashrefs, each like:
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[ { code => 'CODE', value => 'value' }, { code => 'CODE2', value => 'othervalue' } ... ]
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The third option specifies whether repeatable codes are clobbered or collected. True for non-clobber.
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Returns one reference to (merged) array of hashref.
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Caches results of C4::Members::AttributeTypes::GetAttributeTypes_hashref(1) for efficiency.
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=cut
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sub extended_attributes_merge {
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my $old = shift or return;
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my $new = shift or return $old;
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my $keep = @_ ? shift : 0;
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$AttributeTypes or $AttributeTypes = C4::Members::AttributeTypes::GetAttributeTypes_hashref(1);
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my @merged = @$old;
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foreach my $att (@$new) {
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unless ($att->{code}) {
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warn "Cannot merge element: no 'code' defined";
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next;
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}
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unless ($AttributeTypes->{$att->{code}}) {
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warn "Cannot merge element: unrecognized code = '$att->{code}'";
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next;
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}
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unless ($AttributeTypes->{$att->{code}}->{repeatable} and $keep) {
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@merged = grep {$att->{code} ne $_->{code}} @merged; # filter out any existing attributes of the same code
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}
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push @merged, $att;
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}
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return [( sort {&_sort_by_code($a,$b)} @merged )];
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}
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sub _sort_by_code {
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my ($x, $y) = @_;
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defined ($x->{code}) or return -1;
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defined ($y->{code}) or return 1;
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return $x->{code} cmp $y->{code} || $x->{value} cmp $y->{value};
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}
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=head1 AUTHOR
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Koha Development Team <info@koha.org>
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Galen Charlton <galen.charlton@liblime.com>
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=cut
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1;
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