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} ) {
432 my $next = $embeds->{$curr}->{children
};
434 my $children = $self->$curr;
436 if ( defined $children and ref($children) eq 'ARRAY' ) {
438 $self->_handle_to_api_child(
439 { child
=> $_, next => $next, curr
=> $curr } )
441 $json_object->{$curr} = \
@list;
444 $json_object->{$curr} = $self->_handle_to_api_child(
445 { child
=> $children, next => $next, curr
=> $curr } );
455 =head3 to_api_mapping
457 my $mapping = $object->to_api_mapping;
459 Generic method that returns the attribute name mappings required to
460 render the object on the API.
462 Note: this only returns an empty I<hashref>. Each class should have its
463 own mapping returned.
471 =head3 from_api_mapping
473 my $mapping = $object->from_api_mapping;
475 Generic method that returns the attribute name mappings so the data that
476 comes from the API is correctly renamed to match what is required for the DB.
480 sub from_api_mapping
{
483 my $to_api_mapping = $self->to_api_mapping;
485 unless ( $self->{_from_api_mapping
} ) {
486 while (my ($key, $value) = each %{ $to_api_mapping } ) {
487 $self->{_from_api_mapping
}->{$value} = $key
492 return $self->{_from_api_mapping
};
497 my $object = Koha::Object->new_from_api;
498 my $object = Koha::Object->new_from_api( $attrs );
500 Creates a new object, mapping the API attribute names to the ones on the DB schema.
505 my ( $class, $params ) = @_;
507 my $self = $class->new;
508 return $self->set_from_api( $params );
513 my $object = Koha::Object->new(...);
514 $object->set_from_api( $attrs )
516 Sets the object's attributes mapping API attribute names to the ones on the DB schema.
521 my ( $self, $from_api_params ) = @_;
523 return $self->set( $self->attributes_from_api( $from_api_params ) );
526 =head3 attributes_from_api
528 my $attributes = attributes_from_api( $params );
530 Returns the passed params, converted from API naming into the model.
534 sub attributes_from_api
{
535 my ( $self, $from_api_params ) = @_;
537 my $from_api_mapping = $self->from_api_mapping;
540 my $columns_info = $self->_result->result_source->columns_info;
542 while (my ($key, $value) = each %{ $from_api_params } ) {
543 my $koha_field_name =
544 exists $from_api_mapping->{$key}
545 ?
$from_api_mapping->{$key}
548 if ( $columns_info->{$koha_field_name}->{is_boolean
} ) {
549 # TODO: Remove when D8 is formally deprecated
550 # Handle booleans gracefully
551 $value = ( $value ) ?
1 : 0;
553 elsif ( _date_or_datetime_column_type
( $columns_info->{$koha_field_name}->{data_type
} ) ) {
555 $value = dt_from_string
($value, 'rfc3339');
558 Koha
::Exceptions
::BadParameter
->throw( parameter
=> $key );
562 $params->{$koha_field_name} = $value;
568 =head3 $object->unblessed_all_relateds
570 my $everything_into_one_hashref = $object->unblessed_all_relateds
572 The unblessed method only retrieves column' values for the column of the object.
573 In a *few* cases we want to retrieve the information of all the prefetched data.
577 sub unblessed_all_relateds
{
581 my $related_resultsets = $self->_result->{related_resultsets
} || {};
582 my $rs = $self->_result;
583 while ( $related_resultsets and %$related_resultsets ) {
584 my @relations = keys %{ $related_resultsets };
586 my $relation = $relations[0];
587 $rs = $rs->related_resultset($relation)->get_cache;
588 $rs = $rs->[0]; # Does it makes sense to have several values here?
589 my $object_class = Koha
::Object
::_get_object_class
( $rs->result_class );
590 my $koha_object = $object_class->_new_from_dbic( $rs );
591 $related_resultsets = $rs->{related_resultsets
};
592 %data = ( %data, %{ $koha_object->unblessed } );
595 %data = ( %data, %{ $self->unblessed } );
599 =head3 $object->_result();
601 Returns the internal DBIC Row object
608 # If we don't have a dbic row at this point, we need to create an empty one
610 Koha
::Database
->new()->schema()->resultset( $self->_type() )->new({});
612 return $self->{_result
};
615 =head3 $object->_columns();
617 Returns an arrayref of the table columns
624 # If we don't have a dbic row at this point, we need to create an empty one
625 $self->{_columns
} ||= [ $self->_result()->result_source()->columns() ];
627 return $self->{_columns
};
630 sub _get_object_class
{
634 if( $type->can('koha_object_class') ) {
635 return $type->koha_object_class;
637 $type =~ s
|Schema
::Result
::||;
643 The autoload method is used only to get and set values for an objects properties.
650 my $method = our $AUTOLOAD;
653 my @columns = @
{$self->_columns()};
654 # Using direct setter/getter like $item->barcode() or $item->barcode($barcode);
655 if ( grep {/^$method$/} @columns ) {
657 $self->_result()->set_column( $method, @_ );
660 my $value = $self->_result()->get_column( $method );
665 my @known_methods = qw( is_changed id in_storage get_column discard_changes make_column_dirty );
667 Koha
::Exceptions
::Object
::MethodNotCoveredByTests
->throw(
668 error
=> sprintf("The method %s->%s is not covered by tests!", ref($self), $method),
670 ) unless grep { /^$method$/ } @known_methods;
673 my $r = eval { $self->_result->$method(@_) };
675 Koha
::Exceptions
::Object
->throw( ref($self) . "::$method generated this error: " . $@
);
682 This method must be defined in the child class. The value is the name of the DBIC resultset.
683 For example, for borrowers, the _type method will return "Borrower".
689 =head3 _handle_to_api_child
693 sub _handle_to_api_child
{
694 my ($self, $args ) = @_;
696 my $child = $args->{child
};
697 my $next = $args->{next};
698 my $curr = $args->{curr
};
702 if ( defined $child ) {
704 Koha
::Exceptions
::Exception
->throw( "Asked to embed $curr but its return value doesn't implement to_api" )
705 if defined $next and blessed
$child and !$child->can('to_api');
707 if ( blessed
$child ) {
708 $res = $child->to_api({ embed
=> $next });
722 Kyle M Hall <kyle@bywatersolutions.com>
724 Jonathan Druart <jonathan.druart@bugs.koha-community.org>