3 # Copyright ByWater Solutions 2014
4 # Copyright 2016 Koha Development Team
6 # This file is part of Koha.
8 # Koha is free software; you can redistribute it and/or modify it under the
9 # terms of the GNU General Public License as published by the Free Software
10 # Foundation; either version 3 of the License, or (at your option) any later
13 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
14 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
15 # A PARTICULAR PURPOSE. See the GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License along
18 # with Koha; if not, write to the Free Software Foundation, Inc.,
19 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
25 use Scalar::Util qw( blessed looks_like_number );
29 use Koha::Exceptions::Object;
34 Koha::Object - Koha Object base class
39 my $object = Koha::Object->new({ property1 => $property1, property2 => $property2, etc... } );
43 This class must always be subclassed.
51 =head3 Koha::Object->new();
53 my $object = Koha::Object->new();
54 my $object = Koha::Object->new($attributes);
56 Note that this cannot be used to retrieve record from the DB.
61 my ( $class, $attributes ) = @_;
65 my $schema = Koha::Database->new->schema;
67 # Remove the arguments which exist, are not defined but NOT NULL to use the default value
68 my $columns_info = $schema->resultset( $class->_type )->result_source->columns_info;
69 for my $column_name ( keys %$attributes ) {
70 my $c_info = $columns_info->{$column_name};
71 next if $c_info->{is_nullable};
72 next if not exists $attributes->{$column_name} or defined $attributes->{$column_name};
73 delete $attributes->{$column_name};
77 $schema->resultset( $class->_type() )->new($attributes);
80 croak("No _type found! Koha::Object must be subclassed!")
81 unless $class->_type();
83 bless( $self, $class );
87 =head3 Koha::Object->_new_from_dbic();
89 my $object = Koha::Object->_new_from_dbic($dbic_row);
94 my ( $class, $dbic_row ) = @_;
98 $self->{_result} = $dbic_row;
100 croak("No _type found! Koha::Object must be subclassed!")
101 unless $class->_type();
103 croak( "DBIC result _type " . ref( $self->{_result} ) . " isn't of the _type " . $class->_type() )
104 unless ref( $self->{_result} ) eq "Koha::Schema::Result::" . $class->_type();
106 bless( $self, $class );
110 =head3 $object->store();
112 Saves the object in storage.
113 If the object is new, it will be created.
114 If the object previously existed, it will be updated.
117 $self if the store was a success
118 undef if the store failed
125 my $columns_info = $self->_result->result_source->columns_info;
127 # Handle not null and default values for integers and dates
128 foreach my $col ( keys %{$columns_info} ) {
130 if ( _numeric_column_type( $columns_info->{$col}->{data_type} ) ) {
131 # Has been passed but not a number, usually an empty string
132 if ( defined $self->$col and not looks_like_number( $self->$col ) ) {
133 if ( $columns_info->{$col}->{is_nullable} ) {
134 # If nullable, default to null
137 # If cannot be null, get the default value
138 # What if cannot be null and does not have a default value? Possible?
139 $self->$col($columns_info->{$col}->{default_value});
143 elsif ( _date_or_datetime_column_type( $columns_info->{$col}->{data_type} ) ) {
144 # Set to null if an empty string (or == 0 but should not happen)
145 if ( defined $self->$col and not $self->$col ) {
146 if ( $columns_info->{$col}->{is_nullable} ) {
149 $self->$col($columns_info->{$col}->{default_value});
156 return $self->_result()->update_or_insert() ? $self : undef;
159 # Catch problems and raise relevant exceptions
160 if (ref($_) eq 'DBIx::Class::Exception') {
161 if ( $_->{msg} =~ /Cannot add or update a child row: a foreign key constraint fails/ ) {
163 # FIXME: MySQL error, if we support more DB engines we should implement this for each
164 if ( $_->{msg} =~ /FOREIGN KEY \(`(?<column>.*?)`\)/ ) {
165 Koha::Exceptions::Object::FKConstraint->throw(
166 error => 'Broken FK constraint',
167 broken_fk => $+{column}
171 elsif( $_->{msg} =~ /Duplicate entry '(.*?)' for key '(?<key>.*?)'/ ) {
172 Koha::Exceptions::Object::DuplicateID->throw(
173 error => 'Duplicate ID',
174 duplicate_id => $+{key}
177 elsif( $_->{msg} =~ /Incorrect (?<type>\w+) value: '(?<value>.*)' for column \W?(?<property>\S+)/ ) { # The optional \W in the regex might be a quote or backtick
179 my $value = $+{value};
180 my $property = $+{property};
181 $property =~ s/['`]//g;
182 Koha::Exceptions::Object::BadValue->throw(
185 property => $property =~ /(\w+\.\w+)$/ ? $1 : $property, # results in table.column without quotes or backtics
189 # Catch-all for foreign key breakages. It will help find other use cases
194 =head3 $object->update();
196 A shortcut for set + store in one call.
201 my ($self, $values) = @_;
202 return $self->set($values)->store();
205 =head3 $object->delete();
207 Removes the object from storage.
210 1 if the deletion was a success
211 0 if the deletion failed
212 -1 if the object was never in storage
219 my $deleted = $self->_result()->delete;
220 if ( ref $deleted ) {
221 my $object_class = Koha::Object::_get_object_class( $self->_result->result_class );
222 $deleted = $object_class->_new_from_dbic($deleted);
227 =head3 $object->set( $properties_hashref )
231 property1 => $property1,
232 property2 => $property2,
233 property3 => $propery3,
237 Enables multiple properties to be set at once
240 1 if all properties were set.
241 0 if one or more properties do not exist.
242 undef if all properties exist but a different error
243 prevents one or more properties from being set.
245 If one or more of the properties do not exist,
246 no properties will be set.
251 my ( $self, $properties ) = @_;
253 my @columns = @{$self->_columns()};
255 foreach my $p ( keys %$properties ) {
256 unless ( grep {/^$p$/} @columns ) {
257 Koha::Exceptions::Object::PropertyNotFound->throw( "No property $p for " . ref($self) );
261 return $self->_result()->set_columns($properties) ? $self : undef;
264 =head3 $object->unblessed();
266 Returns an unblessed representation of object.
273 return { $self->_result->get_columns };
276 =head3 $object->get_from_storage;
280 sub get_from_storage {
281 my ( $self, $attrs ) = @_;
282 my $stored_object = $self->_result->get_from_storage($attrs);
283 my $object_class = Koha::Object::_get_object_class( $self->_result->result_class );
284 return $object_class->_new_from_dbic($stored_object);
287 =head3 $object->TO_JSON
289 Returns an unblessed representation of the object, suitable for JSON output.
297 my $unblessed = $self->unblessed;
298 my $columns_info = Koha::Database->new->schema->resultset( $self->_type )
299 ->result_source->{_columns};
301 foreach my $col ( keys %{$columns_info} ) {
303 if ( $columns_info->{$col}->{is_boolean} )
304 { # Handle booleans gracefully
306 = ( $unblessed->{$col} )
310 elsif ( _numeric_column_type( $columns_info->{$col}->{data_type} )
311 and looks_like_number( $unblessed->{$col} )
314 # TODO: Remove once the solution for
315 # https://rt.cpan.org/Ticket/Display.html?id=119904
316 # is ported to whatever distro we support by that time
317 $unblessed->{$col} += 0;
319 elsif ( _datetime_column_type( $columns_info->{$col}->{data_type} ) ) {
321 return unless $unblessed->{$col};
322 $unblessed->{$col} = output_pref({
323 dateformat => 'rfc3339',
324 dt => dt_from_string($unblessed->{$col}, 'sql'),
332 sub _date_or_datetime_column_type {
333 my ($column_type) = @_;
341 return ( grep { $column_type eq $_ } @dt_types) ? 1 : 0;
343 sub _datetime_column_type {
344 my ($column_type) = @_;
351 return ( grep { $column_type eq $_ } @dt_types) ? 1 : 0;
354 sub _numeric_column_type {
355 # TODO: Remove once the solution for
356 # https://rt.cpan.org/Ticket/Display.html?id=119904
357 # is ported to whatever distro we support by that time
358 my ($column_type) = @_;
360 my @numeric_types = (
372 return ( grep { $column_type eq $_ } @numeric_types) ? 1 : 0;
377 my $object_for_api = $object->to_api(
398 Returns a representation of the object, suitable for API output.
403 my ( $self, $params ) = @_;
404 my $json_object = $self->TO_JSON;
406 my $to_api_mapping = $self->to_api_mapping;
408 # Rename attributes if there's a mapping
409 if ( $self->can('to_api_mapping') ) {
410 foreach my $column ( keys %{ $self->to_api_mapping } ) {
411 my $mapped_column = $self->to_api_mapping->{$column};
412 if ( exists $json_object->{$column}
413 && defined $mapped_column )
416 $json_object->{$mapped_column} = delete $json_object->{$column};
418 elsif ( exists $json_object->{$column}
419 && !defined $mapped_column )
422 delete $json_object->{$column};
427 my $embeds = $params->{embed};
430 foreach my $embed ( keys %{$embeds} ) {
431 if ( $embed =~ m/^(?<relation>.*)_count$/
432 and $embeds->{$embed}->{is_count} ) {
434 my $relation = $+{relation};
435 $json_object->{$embed} = $self->$relation->count;
439 my $next = $embeds->{$curr}->{children};
441 my $children = $self->$curr;
443 if ( defined $children and ref($children) eq 'ARRAY' ) {
445 $self->_handle_to_api_child(
446 { child => $_, next => $next, curr => $curr } )
448 $json_object->{$curr} = \@list;
451 $json_object->{$curr} = $self->_handle_to_api_child(
452 { child => $children, next => $next, curr => $curr } );
463 =head3 to_api_mapping
465 my $mapping = $object->to_api_mapping;
467 Generic method that returns the attribute name mappings required to
468 render the object on the API.
470 Note: this only returns an empty I<hashref>. Each class should have its
471 own mapping returned.
479 =head3 from_api_mapping
481 my $mapping = $object->from_api_mapping;
483 Generic method that returns the attribute name mappings so the data that
484 comes from the API is correctly renamed to match what is required for the DB.
488 sub from_api_mapping {
491 my $to_api_mapping = $self->to_api_mapping;
493 unless ( $self->{_from_api_mapping} ) {
494 while (my ($key, $value) = each %{ $to_api_mapping } ) {
495 $self->{_from_api_mapping}->{$value} = $key
500 return $self->{_from_api_mapping};
505 my $object = Koha::Object->new_from_api;
506 my $object = Koha::Object->new_from_api( $attrs );
508 Creates a new object, mapping the API attribute names to the ones on the DB schema.
513 my ( $class, $params ) = @_;
515 my $self = $class->new;
516 return $self->set_from_api( $params );
521 my $object = Koha::Object->new(...);
522 $object->set_from_api( $attrs )
524 Sets the object's attributes mapping API attribute names to the ones on the DB schema.
529 my ( $self, $from_api_params ) = @_;
531 return $self->set( $self->attributes_from_api( $from_api_params ) );
534 =head3 attributes_from_api
536 my $attributes = attributes_from_api( $params );
538 Returns the passed params, converted from API naming into the model.
542 sub attributes_from_api {
543 my ( $self, $from_api_params ) = @_;
545 my $from_api_mapping = $self->from_api_mapping;
548 my $columns_info = $self->_result->result_source->columns_info;
550 while (my ($key, $value) = each %{ $from_api_params } ) {
551 my $koha_field_name =
552 exists $from_api_mapping->{$key}
553 ? $from_api_mapping->{$key}
556 if ( $columns_info->{$koha_field_name}->{is_boolean} ) {
557 # TODO: Remove when D8 is formally deprecated
558 # Handle booleans gracefully
559 $value = ( $value ) ? 1 : 0;
561 elsif ( _date_or_datetime_column_type( $columns_info->{$koha_field_name}->{data_type} ) ) {
563 $value = dt_from_string($value, 'rfc3339');
566 Koha::Exceptions::BadParameter->throw( parameter => $key );
570 $params->{$koha_field_name} = $value;
576 =head3 $object->unblessed_all_relateds
578 my $everything_into_one_hashref = $object->unblessed_all_relateds
580 The unblessed method only retrieves column' values for the column of the object.
581 In a *few* cases we want to retrieve the information of all the prefetched data.
585 sub unblessed_all_relateds {
589 my $related_resultsets = $self->_result->{related_resultsets} || {};
590 my $rs = $self->_result;
591 while ( $related_resultsets and %$related_resultsets ) {
592 my @relations = keys %{ $related_resultsets };
594 my $relation = $relations[0];
595 $rs = $rs->related_resultset($relation)->get_cache;
596 $rs = $rs->[0]; # Does it makes sense to have several values here?
597 my $object_class = Koha::Object::_get_object_class( $rs->result_class );
598 my $koha_object = $object_class->_new_from_dbic( $rs );
599 $related_resultsets = $rs->{related_resultsets};
600 %data = ( %data, %{ $koha_object->unblessed } );
603 %data = ( %data, %{ $self->unblessed } );
607 =head3 $object->_result();
609 Returns the internal DBIC Row object
616 # If we don't have a dbic row at this point, we need to create an empty one
618 Koha::Database->new()->schema()->resultset( $self->_type() )->new({});
620 return $self->{_result};
623 =head3 $object->_columns();
625 Returns an arrayref of the table columns
632 # If we don't have a dbic row at this point, we need to create an empty one
633 $self->{_columns} ||= [ $self->_result()->result_source()->columns() ];
635 return $self->{_columns};
638 sub _get_object_class {
642 if( $type->can('koha_object_class') ) {
643 return $type->koha_object_class;
645 $type =~ s|Schema::Result::||;
651 The autoload method is used only to get and set values for an objects properties.
658 my $method = our $AUTOLOAD;
661 my @columns = @{$self->_columns()};
662 # Using direct setter/getter like $item->barcode() or $item->barcode($barcode);
663 if ( grep {/^$method$/} @columns ) {
665 $self->_result()->set_column( $method, @_ );
668 my $value = $self->_result()->get_column( $method );
673 my @known_methods = qw( is_changed id in_storage get_column discard_changes make_column_dirty );
675 Koha::Exceptions::Object::MethodNotCoveredByTests->throw(
676 error => sprintf("The method %s->%s is not covered by tests!", ref($self), $method),
678 ) unless grep { /^$method$/ } @known_methods;
681 my $r = eval { $self->_result->$method(@_) };
683 Koha::Exceptions::Object->throw( ref($self) . "::$method generated this error: " . $@ );
690 This method must be defined in the child class. The value is the name of the DBIC resultset.
691 For example, for borrowers, the _type method will return "Borrower".
697 =head3 _handle_to_api_child
701 sub _handle_to_api_child {
702 my ($self, $args ) = @_;
704 my $child = $args->{child};
705 my $next = $args->{next};
706 my $curr = $args->{curr};
710 if ( defined $child ) {
712 Koha::Exceptions::Exception->throw( "Asked to embed $curr but its return value doesn't implement to_api" )
713 if defined $next and blessed $child and !$child->can('to_api');
715 if ( blessed $child ) {
716 $res = $child->to_api({ embed => $next });
730 Kyle M Hall <kyle@bywatersolutions.com>
732 Jonathan Druart <jonathan.druart@bugs.koha-community.org>