C4/Members/Attributes.pm

   1 package C4::Members::Attributes;
   2
   3 # Copyright (C) 2008 LibLime
   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 strict;
  21 use warnings;
  22
  23 use Text::CSV;      # Don't be tempted to use Text::CSV::Unicode -- even in binary mode it fails.
  24 use C4::Context;
  25 use C4::Members::AttributeTypes;
  26
  27 use vars qw(@ISA @EXPORT_OK @EXPORT %EXPORT_TAGS);
  28 our ($csv, $AttributeTypes);
  29
  30 BEGIN {
  31     @ISA = qw(Exporter);
  32     @EXPORT_OK = qw(GetBorrowerAttributes GetBorrowerAttributeValue CheckUniqueness SetBorrowerAttributes
  33                     DeleteBorrowerAttribute UpdateBorrowerAttribute
  34                     extended_attributes_code_value_arrayref extended_attributes_merge
  35                     SearchIdMatchingAttribute);
  36     %EXPORT_TAGS = ( all => \@EXPORT_OK );
  37 }
  38
  39 =head1 NAME
  40
  41 C4::Members::Attributes - manage extend patron attributes
  42
  43 =head1 SYNOPSIS
  44
  45   use C4::Members::Attributes;
  46   my $attributes = C4::Members::Attributes::GetBorrowerAttributes($borrowernumber);
  47
  48 =head1 FUNCTIONS
  49
  50 =head2 GetBorrowerAttributes
  51
  52   my $attributes = C4::Members::Attributes::GetBorrowerAttributes($borrowernumber[, $opac_only]);
  53
  54 Retrieve an arrayref of extended attributes associated with the
  55 patron specified by C<$borrowernumber>.  Each entry in the arrayref
  56 is a hashref containing the following keys:
  57
  58 code (attribute type code)
  59 description (attribute type description)
  60 value (attribute value)
  61 value_description (attribute value description (if associated with an authorised value))
  62
  63 If the C<$opac_only> parameter is present and has a true value, only the attributes
  64 marked for OPAC display are returned.
  65
  66 =cut
  67
  68 sub GetBorrowerAttributes {
  69     my $borrowernumber = shift;
  70     my $opac_only = @_ ? shift : 0;
  71
  72     my $dbh = C4::Context->dbh();
  73     my $query = "SELECT code, description, attribute, lib, display_checkout, category_code, class
  74                  FROM borrower_attributes
  75                  JOIN borrower_attribute_types USING (code)
  76                  LEFT JOIN authorised_values ON (category = authorised_value_category AND attribute = authorised_value)
  77                  WHERE borrowernumber = ?";
  78     $query .= "\nAND opac_display = 1" if $opac_only;
  79     $query .= "\nORDER BY code, attribute";
  80     my $sth = $dbh->prepare_cached($query);
  81     $sth->execute($borrowernumber);
  82     my @results = ();
  83     while (my $row = $sth->fetchrow_hashref()) {
  84         push @results, {
  85             code              => $row->{'code'},
  86             description       => $row->{'description'},
  87             value             => $row->{'attribute'},
  88             value_description => $row->{'lib'},
  89             display_checkout  => $row->{'display_checkout'},
  90             category_code     => $row->{'category_code'},
  91             class             => $row->{'class'},
  92         }
  93     }
  94     $sth->finish;
  95     return \@results;
  96 }
  97
  98 =head2 GetBorrowerAttributeValue
  99
 100   my $value = C4::Members::Attributes::GetBorrowerAttributeValue($borrowernumber, $attribute_code);
 101
 102 Retrieve the value of an extended attribute C<$attribute_code> associated with the
 103 patron specified by C<$borrowernumber>.
 104
 105 =cut
 106
 107 sub GetBorrowerAttributeValue {
 108     my $borrowernumber = shift;
 109     my $code = shift;
 110
 111     my $dbh = C4::Context->dbh();
 112     my $query = "SELECT attribute
 113                  FROM borrower_attributes
 114                  WHERE borrowernumber = ?
 115                  AND code = ?";
 116     my $value = $dbh->selectrow_array($query, undef, $borrowernumber, $code);
 117     return $value;
 118 }
 119
 120 =head2 SearchIdMatchingAttribute
 121
 122   my $matching_borrowernumbers = C4::Members::Attributes::SearchIdMatchingAttribute($filter);
 123
 124 =cut
 125
 126 sub SearchIdMatchingAttribute{
 127     my $filter = shift;
 128     $filter = [$filter] unless ref $filter;
 129
 130     my $dbh   = C4::Context->dbh();
 131     my $query = qq{
 132 SELECT DISTINCT borrowernumber
 133 FROM borrower_attributes
 134 JOIN borrower_attribute_types USING (code)
 135 WHERE staff_searchable = 1
 136 AND (} . join (" OR ", map "attribute like ?", @$filter) .qq{)};
 137     my $sth = $dbh->prepare_cached($query);
 138     $sth->execute(map "%$_%", @$filter);
 139     return [map $_->[0], @{ $sth->fetchall_arrayref }];
 140 }
 141
 142 =head2 CheckUniqueness
 143
 144   my $ok = CheckUniqueness($code, $value[, $borrowernumber]);
 145
 146 Given an attribute type and value, verify if would violate
 147 a unique_id restriction if added to the patron.  The
 148 optional C<$borrowernumber> is the patron that the attribute
 149 value would be added to, if known.
 150
 151 Returns false if the C<$code> is not valid or the
 152 value would violate the uniqueness constraint.
 153
 154 =cut
 155
 156 sub CheckUniqueness {
 157     my $code = shift;
 158     my $value = shift;
 159     my $borrowernumber = @_ ? shift : undef;
 160
 161     my $attr_type = C4::Members::AttributeTypes->fetch($code);
 162
 163     return 0 unless defined $attr_type;
 164     return 1 unless $attr_type->unique_id();
 165
 166     my $dbh = C4::Context->dbh;
 167     my $sth;
 168     if (defined($borrowernumber)) {
 169         $sth = $dbh->prepare("SELECT COUNT(*)
 170                               FROM borrower_attributes
 171                               WHERE code = ?
 172                               AND attribute = ?
 173                               AND borrowernumber <> ?");
 174         $sth->execute($code, $value, $borrowernumber);
 175     } else {
 176         $sth = $dbh->prepare("SELECT COUNT(*)
 177                               FROM borrower_attributes
 178                               WHERE code = ?
 179                               AND attribute = ?");
 180         $sth->execute($code, $value);
 181     }
 182     my ($count) = $sth->fetchrow_array;
 183     return ($count == 0);
 184 }
 185
 186 =head2 SetBorrowerAttributes
 187
 188   SetBorrowerAttributes($borrowernumber, [ { code => 'CODE', value => 'value' }, ... ] );
 189
 190 Set patron attributes for the patron identified by C<$borrowernumber>,
 191 replacing any that existed previously.
 192
 193 =cut
 194
 195 sub SetBorrowerAttributes {
 196     my $borrowernumber = shift;
 197     my $attr_list = shift;
 198     my $no_branch_limit = shift // 0;
 199
 200     my $dbh = C4::Context->dbh;
 201
 202     DeleteBorrowerAttributes( $borrowernumber, $no_branch_limit );
 203
 204     my $sth = $dbh->prepare("INSERT INTO borrower_attributes (borrowernumber, code, attribute)
 205                              VALUES (?, ?, ?)");
 206     foreach my $attr (@$attr_list) {
 207         $sth->execute($borrowernumber, $attr->{code}, $attr->{value});
 208         if ($sth->err) {
 209             warn sprintf('Database returned the following error: %s', $sth->errstr);
 210             return; # bail immediately on errors
 211         }
 212     }
 213     return 1; # borrower attributes successfully set
 214 }
 215
 216 =head2 DeleteBorrowerAttributes
 217
 218   DeleteBorrowerAttributes($borrowernumber);
 219
 220 Delete borrower attributes for the patron identified by C<$borrowernumber>.
 221
 222 =cut
 223
 224 sub DeleteBorrowerAttributes {
 225     my $borrowernumber = shift;
 226     my $no_branch_limit = @_ ? shift : 0;
 227     my $branch_limit = $no_branch_limit
 228         ? 0
 229         : C4::Context->userenv ? C4::Context->userenv->{"branch"} : 0;
 230
 231     my $dbh = C4::Context->dbh;
 232     my $query = q{
 233         DELETE borrower_attributes FROM borrower_attributes
 234         };
 235
 236     $query .= $branch_limit
 237         ? q{
 238             LEFT JOIN borrower_attribute_types_branches ON bat_code = code
 239             WHERE ( b_branchcode = ? OR b_branchcode IS NULL )
 240                 AND borrowernumber = ?
 241         }
 242         : q{
 243             WHERE borrowernumber = ?
 244         };
 245
 246     $dbh->do( $query, undef, $branch_limit ? $branch_limit : (), $borrowernumber );
 247 }
 248
 249 =head2 DeleteBorrowerAttribute
 250
 251   DeleteBorrowerAttribute($borrowernumber, $attribute);
 252
 253 Delete a borrower attribute for the patron identified by C<$borrowernumber> and the attribute code of C<$attribute>
 254
 255 =cut
 256
 257 sub DeleteBorrowerAttribute {
 258     my ( $borrowernumber, $attribute ) = @_;
 259
 260     my $dbh = C4::Context->dbh;
 261     my $sth = $dbh->prepare(qq{
 262         DELETE FROM borrower_attributes
 263             WHERE borrowernumber = ?
 264             AND code = ?
 265     } );
 266     $sth->execute( $borrowernumber, $attribute->{code} );
 267 }
 268
 269 =head2 UpdateBorrowerAttribute
 270
 271   UpdateBorrowerAttribute($borrowernumber, $attribute );
 272
 273 Update a borrower attribute C<$attribute> for the patron identified by C<$borrowernumber>,
 274
 275 =cut
 276
 277 sub UpdateBorrowerAttribute {
 278     my ( $borrowernumber, $attribute ) = @_;
 279
 280     DeleteBorrowerAttribute $borrowernumber, $attribute;
 281
 282     my $dbh = C4::Context->dbh;
 283     my $query = "INSERT INTO borrower_attributes SET attribute = ?, code = ?, borrowernumber = ?";
 284     my @params = ( $attribute->{attribute}, $attribute->{code}, $borrowernumber );
 285     my $sth = $dbh->prepare( $query );
 286
 287     $sth->execute( @params );
 288 }
 289
 290
 291 =head2 extended_attributes_code_value_arrayref
 292
 293    my $patron_attributes = "homeroom:1150605,grade:01,extradata:foobar";
 294    my $aref = extended_attributes_code_value_arrayref($patron_attributes);
 295
 296 Takes a comma-delimited CSV-style string argument and returns the kind of data structure that SetBorrowerAttributes wants,
 297 namely a reference to array of hashrefs like:
 298  [ { code => 'CODE', value => 'value' }, { code => 'CODE2', value => 'othervalue' } ... ]
 299
 300 Caches Text::CSV parser object for efficiency.
 301
 302 =cut
 303
 304 sub extended_attributes_code_value_arrayref {
 305     my $string = shift or return;
 306     $csv or $csv = Text::CSV->new({binary => 1});  # binary needed for non-ASCII Unicode
 307     my $ok   = $csv->parse($string);  # parse field again to get subfields!
 308     my @list = $csv->fields();
 309     # TODO: error handling (check $ok)
 310     return [
 311         sort {&_sort_by_code($a,$b)}
 312         map { map { my @arr = split /:/, $_, 2; { code => $arr[0], value => $arr[1] } } $_ }
 313         @list
 314     ];
 315     # nested map because of split
 316 }
 317
 318 =head2 extended_attributes_merge
 319
 320   my $old_attributes = extended_attributes_code_value_arrayref("homeroom:224,grade:04,deanslist:2007,deanslist:2008,somedata:xxx");
 321   my $new_attributes = extended_attributes_code_value_arrayref("homeroom:115,grade:05,deanslist:2009,extradata:foobar");
 322   my $merged = extended_attributes_merge($patron_attributes, $new_attributes, 1);
 323
 324   # assuming deanslist is a repeatable code, value same as:
 325   # $merged = extended_attributes_code_value_arrayref("homeroom:115,grade:05,deanslist:2007,deanslist:2008,deanslist:2009,extradata:foobar,somedata:xxx");
 326
 327 Takes three arguments.  The first two are references to array of hashrefs, each like:
 328  [ { code => 'CODE', value => 'value' }, { code => 'CODE2', value => 'othervalue' } ... ]
 329
 330 The third option specifies whether repeatable codes are clobbered or collected.  True for non-clobber.
 331
 332 Returns one reference to (merged) array of hashref.
 333
 334 Caches results of C4::Members::AttributeTypes::GetAttributeTypes_hashref(1) for efficiency.
 335
 336 =cut
 337
 338 sub extended_attributes_merge {
 339     my $old = shift or return;
 340     my $new = shift or return $old;
 341     my $keep = @_ ? shift : 0;
 342     $AttributeTypes or $AttributeTypes = C4::Members::AttributeTypes::GetAttributeTypes_hashref(1);
 343     my @merged = @$old;
 344     foreach my $att (@$new) {
 345         unless ($att->{code}) {
 346             warn "Cannot merge element: no 'code' defined";
 347             next;
 348         }
 349         unless ($AttributeTypes->{$att->{code}}) {
 350             warn "Cannot merge element: unrecognized code = '$att->{code}'";
 351             next;
 352         }
 353         unless ($AttributeTypes->{$att->{code}}->{repeatable} and $keep) {
 354             @merged = grep {$att->{code} ne $_->{code}} @merged;    # filter out any existing attributes of the same code
 355         }
 356         push @merged, $att;
 357     }
 358     return [( sort {&_sort_by_code($a,$b)} @merged )];
 359 }
 360
 361 sub _sort_by_code {
 362     my ($x, $y) = @_;
 363     defined ($x->{code}) or return -1;
 364     defined ($y->{code}) or return 1;
 365     return $x->{code} cmp $y->{code} || $x->{value} cmp $y->{value};
 366 }
 367
 368 =head1 AUTHOR
 369
 370 Koha Development Team <http://koha-community.org/>
 371
 372 Galen Charlton <galen.charlton@liblime.com>
 373
 374 =cut
 375
 376 1;