3 # Copyright ByWater Solutions 2014
5 # This file is part of Koha.
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
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.
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.
23 use List::MoreUtils qw( none );
29 Koha::Objects - Koha Object set base class
34 my @objects = Koha::Objects->search({ borrowernumber => $borrowernumber});
38 This class must be subclassed.
46 =head3 Koha::Objects->new();
48 my $object = Koha::Objects->new();
56 bless( $self, $class );
59 =head3 Koha::Objects->_new_from_dbic();
61 my $object = Koha::Objects->_new_from_dbic( $resultset );
66 my ( $class, $resultset ) = @_;
67 my $self = { _resultset => $resultset };
69 bless( $self, $class );
72 =head3 Koha::Objects->find();
74 Similar to DBIx::Class::ResultSet->find this method accepts:
75 \%columns_values | @pk_values, { key => $unique_constraint, %attrs }?
76 Strictly speaking, columns_values should only refer to columns under an
79 my $object = Koha::Objects->find( { col1 => $val1, col2 => $val2 } );
80 my $object = Koha::Objects->find( $id );
81 my $object = Koha::Objects->find( $idpart1, $idpart2, $attrs ); # composite PK
86 my ( $self, @pars ) = @_;
88 croak 'Cannot use "->find" in list context' if wantarray;
90 return if !@pars || none { defined($_) } @pars;
92 my $result = $self->_resultset()->find( @pars );
94 return unless $result;
96 my $object = $self->object_class()->_new_from_dbic( $result );
101 =head3 Koha::Objects->find_or_create();
103 my $object = Koha::Objects->find_or_create( $attrs );
108 my ( $self, $params ) = @_;
110 my $result = $self->_resultset->find_or_create($params);
112 return unless $result;
114 my $object = $self->object_class->_new_from_dbic($result);
119 =head3 Koha::Objects->search();
121 my @objects = Koha::Objects->search($params);
126 my ( $self, $params, $attributes ) = @_;
129 my @dbic_rows = $self->_resultset()->search($params, $attributes);
131 return $self->_wrap(@dbic_rows);
135 my $class = ref($self) ? ref($self) : $self;
136 my $rs = $self->_resultset()->search($params, $attributes);
138 return $class->_new_from_dbic($rs);
142 =head3 search_related
144 my @objects = Koha::Objects->search_related( $rel_name, $cond?, \%attrs? );
145 my $objects = Koha::Objects->search_related( $rel_name, $cond?, \%attrs? );
147 Searches the specified relationship, optionally specifying a condition and attributes for matching records.
152 my ( $self, $rel_name, @params ) = @_;
154 return if !$rel_name;
156 my @dbic_rows = $self->_resultset()->search_related($rel_name, @params);
157 return if !@dbic_rows;
158 my $object_class = _get_objects_class( $dbic_rows[0]->result_class );
160 eval "require $object_class";
161 return _wrap( $object_class, @dbic_rows );
164 my $rs = $self->_resultset()->search_related($rel_name, @params);
166 my $object_class = _get_objects_class( $rs->result_class );
168 eval "require $object_class";
169 return _new_from_dbic( $object_class, $rs );
173 =head3 Koha::Objects->next();
175 my $object = Koha::Objects->next();
177 Returns the next object that is part of this set.
178 Returns undef if there are no more objects to return.
185 my $result = $self->_resultset()->next();
186 return unless $result;
188 my $object = $self->object_class()->_new_from_dbic( $result );
193 =head3 Koha::Objects->reset();
195 Koha::Objects->reset();
197 resets iteration so the next call to next() will start agein
198 with the first object in a set.
205 $self->_resultset()->reset();
210 =head3 Koha::Objects->as_list();
212 Koha::Objects->as_list();
214 Returns an arrayref of the objects in this set.
221 my @dbic_rows = $self->_resultset()->all();
223 my @objects = $self->_wrap(@dbic_rows);
225 return wantarray ? @objects : \@objects;
228 =head3 Koha::Objects->unblessed
230 Returns an unblessed representation of objects.
237 return [ map { $_->unblessed } $self->as_list ];
240 =head3 Koha::Objects->_wrap
242 wraps the DBIC object in a corresponding Koha object
247 my ( $self, @dbic_rows ) = @_;
249 my @objects = map { $self->object_class->_new_from_dbic( $_ ) } @dbic_rows;
254 =head3 Koha::Objects->_resultset
256 Returns the internal resultset or creates it if undefined
264 $self->{_resultset} ||=
265 Koha::Database->new()->schema()->resultset( $self->_type() );
267 return $self->{_resultset};
270 return Koha::Database->new()->schema()->resultset( $self->_type() );
274 sub _get_objects_class {
278 if( $type->can('koha_objects_class') ) {
279 return $type->koha_objects_class;
281 $type =~ s|Schema::Result::||;
287 my @columns = Koha::Objects->columns
289 Return the table columns
295 return Koha::Database->new->schema->resultset( $class->_type )->result_source->columns;
300 The autoload method is used call DBIx::Class method on a resultset.
302 Important: If you plan to use one of the DBIx::Class methods you must provide
303 relevant tests in t/db_dependent/Koha/Objects.t
304 Currently count, pager, update and delete are covered.
309 my ( $self, @params ) = @_;
311 my @known_methods = qw( count pager update delete result_class );
312 my $method = our $AUTOLOAD;
315 carp "The method $method is not covered by tests" and return unless grep {/^$method$/} @known_methods;
316 my $r = eval { $self->_resultset->$method(@params) };
318 carp "No method $method found for " . ref($self) . " " . $@;
326 The _type method must be set for all child classes.
327 The value returned by it should be the DBIC resultset name.
328 For example, for holds, _type should return 'Reserve'.
336 This method must be set for all child classes.
337 The value returned by it should be the name of the Koha
338 object class that is returned by this class.
339 For example, for holds, object_class should return 'Koha::Hold'.
349 Kyle M Hall <kyle@bywatersolutions.com>