Koha/Item.pm

   1 package Koha::Item;
   2
   3 # Copyright ByWater Solutions 2014
   4 #
   5 # This file is part of Koha.
   6 #
   7 # Koha is free software; you can redistribute it and/or modify it under the
   8 # terms of the GNU General Public License as published by the Free Software
   9 # Foundation; either version 3 of the License, or (at your option) any later
  10 # version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  13 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  14 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License along
  17 # with Koha; if not, write to the Free Software Foundation, Inc.,
  18 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19
  20 use Modern::Perl;
  21
  22 use Carp;
  23
  24 use Koha::Database;
  25 use Koha::DateUtils qw( dt_from_string );
  26
  27 use C4::Context;
  28 use Koha::Checkouts;
  29 use Koha::IssuingRules;
  30 use Koha::Item::Transfer::Limits;
  31 use Koha::Item::Transfers;
  32 use Koha::Patrons;
  33 use Koha::Libraries;
  34 use Koha::StockRotationItem;
  35 use Koha::StockRotationRotas;
  36
  37 use base qw(Koha::Object);
  38
  39 =head1 NAME
  40
  41 Koha::Item - Koha Item object class
  42
  43 =head1 API
  44
  45 =head2 Class methods
  46
  47 =cut
  48
  49 =head3 effective_itemtype
  50
  51 Returns the itemtype for the item based on whether item level itemtypes are set or not.
  52
  53 =cut
  54
  55 sub effective_itemtype {
  56     my ( $self ) = @_;
  57
  58     return $self->_result()->effective_itemtype();
  59 }
  60
  61 =head3 home_branch
  62
  63 =cut
  64
  65 sub home_branch {
  66     my ($self) = @_;
  67
  68     $self->{_home_branch} ||= Koha::Libraries->find( $self->homebranch() );
  69
  70     return $self->{_home_branch};
  71 }
  72
  73 =head3 holding_branch
  74
  75 =cut
  76
  77 sub holding_branch {
  78     my ($self) = @_;
  79
  80     $self->{_holding_branch} ||= Koha::Libraries->find( $self->holdingbranch() );
  81
  82     return $self->{_holding_branch};
  83 }
  84
  85 =head3 biblio
  86
  87 my $biblio = $item->biblio;
  88
  89 Return the bibliographic record of this item
  90
  91 =cut
  92
  93 sub biblio {
  94     my ( $self ) = @_;
  95     my $biblio_rs = $self->_result->biblio;
  96     return Koha::Biblio->_new_from_dbic( $biblio_rs );
  97 }
  98
  99 =head3 biblioitem
 100
 101 my $biblioitem = $item->biblioitem;
 102
 103 Return the biblioitem record of this item
 104
 105 =cut
 106
 107 sub biblioitem {
 108     my ( $self ) = @_;
 109     my $biblioitem_rs = $self->_result->biblioitem;
 110     return Koha::Biblioitem->_new_from_dbic( $biblioitem_rs );
 111 }
 112
 113 =head3 checkout
 114
 115 my $checkout = $item->checkout;
 116
 117 Return the checkout for this item
 118
 119 =cut
 120
 121 sub checkout {
 122     my ( $self ) = @_;
 123     my $checkout_rs = $self->_result->issue;
 124     return unless $checkout_rs;
 125     return Koha::Checkout->_new_from_dbic( $checkout_rs );
 126 }
 127
 128 =head3 get_transfer
 129
 130 my $transfer = $item->get_transfer;
 131
 132 Return the transfer if the item is in transit or undef
 133
 134 =cut
 135
 136 sub get_transfer {
 137     my ( $self ) = @_;
 138     my $transfer_rs = $self->_result->branchtransfers->search({ datearrived => undef })->first;
 139     return unless $transfer_rs;
 140     return Koha::Item::Transfer->_new_from_dbic( $transfer_rs );
 141 }
 142
 143 =head3 last_returned_by
 144
 145 Gets and sets the last borrower to return an item.
 146
 147 Accepts and returns Koha::Patron objects
 148
 149 $item->last_returned_by( $borrowernumber );
 150
 151 $last_returned_by = $item->last_returned_by();
 152
 153 =cut
 154
 155 sub last_returned_by {
 156     my ( $self, $borrower ) = @_;
 157
 158     my $items_last_returned_by_rs = Koha::Database->new()->schema()->resultset('ItemsLastBorrower');
 159
 160     if ($borrower) {
 161         return $items_last_returned_by_rs->update_or_create(
 162             { borrowernumber => $borrower->borrowernumber, itemnumber => $self->id } );
 163     }
 164     else {
 165         unless ( $self->{_last_returned_by} ) {
 166             my $result = $items_last_returned_by_rs->single( { itemnumber => $self->id } );
 167             if ($result) {
 168                 $self->{_last_returned_by} = Koha::Patrons->find( $result->get_column('borrowernumber') );
 169             }
 170         }
 171
 172         return $self->{_last_returned_by};
 173     }
 174 }
 175
 176 =head3 can_article_request
 177
 178 my $bool = $item->can_article_request( $borrower )
 179
 180 Returns true if item can be specifically requested
 181
 182 $borrower must be a Koha::Patron object
 183
 184 =cut
 185
 186 sub can_article_request {
 187     my ( $self, $borrower ) = @_;
 188
 189     my $rule = $self->article_request_type($borrower);
 190
 191     return 1 if $rule && $rule ne 'no' && $rule ne 'bib_only';
 192     return q{};
 193 }
 194
 195 =head3 can_be_transferred
 196
 197 $item->can_be_transferred({ to => $to_library, from => $from_library })
 198 Checks if an item can be transferred to given library.
 199
 200 This feature is controlled by two system preferences:
 201 UseBranchTransferLimits to enable / disable the feature
 202 BranchTransferLimitsType to use either an itemnumber or ccode as an identifier
 203                          for setting the limitations
 204
 205 Takes HASHref that can have the following parameters:
 206     MANDATORY PARAMETERS:
 207     $to   : Koha::Library
 208     OPTIONAL PARAMETERS:
 209     $from : Koha::Library  # if not given, item holdingbranch
 210                            # will be used instead
 211
 212 Returns 1 if item can be transferred to $to_library, otherwise 0.
 213
 214 To find out whether at least one item of a Koha::Biblio can be transferred, please
 215 see Koha::Biblio->can_be_transferred() instead of using this method for
 216 multiple items of the same biblio.
 217
 218 =cut
 219
 220 sub can_be_transferred {
 221     my ($self, $params) = @_;
 222
 223     my $to   = $params->{to};
 224     my $from = $params->{from};
 225
 226     $to   = $to->branchcode;
 227     $from = defined $from ? $from->branchcode : $self->holdingbranch;
 228
 229     return 1 if $from eq $to; # Transfer to current branch is allowed
 230     return 1 unless C4::Context->preference('UseBranchTransferLimits');
 231
 232     my $limittype = C4::Context->preference('BranchTransferLimitsType');
 233     return Koha::Item::Transfer::Limits->search({
 234         toBranch => $to,
 235         fromBranch => $from,
 236         $limittype => $limittype eq 'itemtype'
 237                         ? $self->effective_itemtype : $self->ccode
 238     })->count ? 0 : 1;
 239 }
 240
 241 =head3 article_request_type
 242
 243 my $type = $item->article_request_type( $borrower )
 244
 245 returns 'yes', 'no', 'bib_only', or 'item_only'
 246
 247 $borrower must be a Koha::Patron object
 248
 249 =cut
 250
 251 sub article_request_type {
 252     my ( $self, $borrower ) = @_;
 253
 254     my $branch_control = C4::Context->preference('HomeOrHoldingBranch');
 255     my $branchcode =
 256         $branch_control eq 'homebranch'    ? $self->homebranch
 257       : $branch_control eq 'holdingbranch' ? $self->holdingbranch
 258       :                                      undef;
 259     my $borrowertype = $borrower->categorycode;
 260     my $itemtype = $self->effective_itemtype();
 261     my $issuing_rule = Koha::IssuingRules->get_effective_issuing_rule({ categorycode => $borrowertype, itemtype => $itemtype, branchcode => $branchcode });
 262
 263     return q{} unless $issuing_rule;
 264     return $issuing_rule->article_requests || q{}
 265 }
 266
 267 =head3 current_holds
 268
 269 =cut
 270
 271 sub current_holds {
 272     my ( $self ) = @_;
 273     my $attributes = { order_by => 'priority' };
 274     my $dtf = Koha::Database->new->schema->storage->datetime_parser;
 275     my $params = {
 276         itemnumber => $self->itemnumber,
 277         suspend => 0,
 278         -or => [
 279             reservedate => { '<=' => $dtf->format_date(dt_from_string) },
 280             waitingdate => { '!=' => undef },
 281         ],
 282     };
 283     my $hold_rs = $self->_result->reserves->search( $params, $attributes );
 284     return Koha::Holds->_new_from_dbic($hold_rs);
 285 }
 286
 287 =head3 stockrotationitem
 288
 289   my $sritem = Koha::Item->stockrotationitem;
 290
 291 Returns the stock rotation item associated with the current item.
 292
 293 =cut
 294
 295 sub stockrotationitem {
 296     my ( $self ) = @_;
 297     my $rs = $self->_result->stockrotationitem;
 298     return 0 if !$rs;
 299     return Koha::StockRotationItem->_new_from_dbic( $rs );
 300 }
 301
 302 =head3 add_to_rota
 303
 304   my $item = $item->add_to_rota($rota_id);
 305
 306 Add this item to the rota identified by $ROTA_ID, which means associating it
 307 with the first stage of that rota.  Should this item already be associated
 308 with a rota, then we will move it to the new rota.
 309
 310 =cut
 311
 312 sub add_to_rota {
 313     my ( $self, $rota_id ) = @_;
 314     Koha::StockRotationRotas->find($rota_id)->add_item($self->itemnumber);
 315     return $self;
 316 }
 317
 318 =head2 Internal methods
 319
 320 =head3 _type
 321
 322 =cut
 323
 324 sub _type {
 325     return 'Item';
 326 }
 327
 328 =head1 AUTHOR
 329
 330 Kyle M Hall <kyle@bywatersolutions.com>
 331
 332 =cut
 333
 334 1;