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( 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;
379 Returns a representation of the object, suitable for API output.
384 my ( $self, $embeds ) = @_;
385 my $json_object = $self->TO_JSON;
387 my $to_api_mapping = $self->to_api_mapping;
389 # Rename attributes if there's a mapping
390 if ( $self->can('to_api_mapping') ) {
391 foreach my $column ( keys %{ $self->to_api_mapping } ) {
392 my $mapped_column = $self->to_api_mapping->{$column};
393 if ( exists $json_object->{$column}
394 && defined $mapped_column )
397 $json_object->{$mapped_column} = delete $json_object->{$column};
399 elsif ( exists $json_object->{$column}
400 && !defined $mapped_column )
403 delete $json_object->{$column};
409 foreach my $embed (@$embeds) {
410 my ( $curr, $next ) = split /\s*\.\s*/, $embed, 2;
413 @nxembeds = ($next) if $next;
415 my $children = $self->$curr;
416 if ( ref $children eq 'ARRAY' ) {
419 foreach my $child (@$children) {
420 my $res = $child->to_api( \@nxembeds );
421 $res = { $json_object->{$curr}->[$pos], $res }
422 if defined $json_object->{$curr}
423 && defined $json_object->{$curr}->[$pos];
427 $json_object->{$curr} = \@list;
430 my $res = $children->to_api( \@nxembeds );
431 $res = { $json_object->{$curr}, $res }
432 if defined $json_object->{$curr};
433 $json_object->{$curr} = $res;
441 =head3 to_api_mapping
443 my $mapping = $object->to_api_mapping;
445 Generic method that returns the attribute name mappings required to
446 render the object on the API.
448 Note: this only returns an empty I<hashref>. Each class should have its
449 own mapping returned.
457 =head3 from_api_mapping
459 my $mapping = $object->from_api_mapping;
461 Generic method that returns the attribute name mappings so the data that
462 comes from the API is correctly renamed to match what is required for the DB.
466 sub from_api_mapping {
469 my $to_api_mapping = $self->to_api_mapping;
471 unless ( $self->{_from_api_mapping} ) {
472 while (my ($key, $value) = each %{ $to_api_mapping } ) {
473 $self->{_from_api_mapping}->{$value} = $key
478 return $self->{_from_api_mapping};
483 my $object = Koha::Object->new_from_api;
484 my $object = Koha::Object->new_from_api( $attrs );
486 Creates a new object, mapping the API attribute names to the ones on the DB schema.
491 my ( $class, $params ) = @_;
493 my $self = $class->new;
494 return $self->set_from_api( $params );
499 my $object = Koha::Object->new(...);
500 $object->set_from_api( $attrs )
502 Sets the object's attributes mapping API attribute names to the ones on the DB schema.
507 my ( $self, $from_api_params ) = @_;
509 return $self->set( $self->attributes_from_api( $from_api_params ) );
512 =head3 attributes_from_api
514 my $attributes = attributes_from_api( $params );
516 Returns the passed params, converted from API naming into the model.
520 sub attributes_from_api {
521 my ( $self, $from_api_params ) = @_;
523 my $from_api_mapping = $self->from_api_mapping;
526 my $columns_info = $self->_result->result_source->columns_info;
528 while (my ($key, $value) = each %{ $from_api_params } ) {
529 my $koha_field_name =
530 exists $from_api_mapping->{$key}
531 ? $from_api_mapping->{$key}
534 if ( _date_or_datetime_column_type( $columns_info->{$koha_field_name}->{data_type} ) ) {
536 $value = dt_from_string($value, 'rfc3339');
539 Koha::Exceptions::BadParameter->throw( parameter => $key );
543 $params->{$koha_field_name} = $value;
549 =head3 $object->unblessed_all_relateds
551 my $everything_into_one_hashref = $object->unblessed_all_relateds
553 The unblessed method only retrieves column' values for the column of the object.
554 In a *few* cases we want to retrieve the information of all the prefetched data.
558 sub unblessed_all_relateds {
562 my $related_resultsets = $self->_result->{related_resultsets} || {};
563 my $rs = $self->_result;
564 while ( $related_resultsets and %$related_resultsets ) {
565 my @relations = keys %{ $related_resultsets };
567 my $relation = $relations[0];
568 $rs = $rs->related_resultset($relation)->get_cache;
569 $rs = $rs->[0]; # Does it makes sense to have several values here?
570 my $object_class = Koha::Object::_get_object_class( $rs->result_class );
571 my $koha_object = $object_class->_new_from_dbic( $rs );
572 $related_resultsets = $rs->{related_resultsets};
573 %data = ( %data, %{ $koha_object->unblessed } );
576 %data = ( %data, %{ $self->unblessed } );
580 =head3 $object->_result();
582 Returns the internal DBIC Row object
589 # If we don't have a dbic row at this point, we need to create an empty one
591 Koha::Database->new()->schema()->resultset( $self->_type() )->new({});
593 return $self->{_result};
596 =head3 $object->_columns();
598 Returns an arrayref of the table columns
605 # If we don't have a dbic row at this point, we need to create an empty one
606 $self->{_columns} ||= [ $self->_result()->result_source()->columns() ];
608 return $self->{_columns};
611 sub _get_object_class {
615 if( $type->can('koha_object_class') ) {
616 return $type->koha_object_class;
618 $type =~ s|Schema::Result::||;
624 The autoload method is used only to get and set values for an objects properties.
631 my $method = our $AUTOLOAD;
634 my @columns = @{$self->_columns()};
635 # Using direct setter/getter like $item->barcode() or $item->barcode($barcode);
636 if ( grep {/^$method$/} @columns ) {
638 $self->_result()->set_column( $method, @_ );
641 my $value = $self->_result()->get_column( $method );
646 my @known_methods = qw( is_changed id in_storage get_column discard_changes make_column_dirty );
648 Koha::Exceptions::Object::MethodNotCoveredByTests->throw(
649 error => sprintf("The method %s->%s is not covered by tests!", ref($self), $method),
651 ) unless grep { /^$method$/ } @known_methods;
654 my $r = eval { $self->_result->$method(@_) };
656 Koha::Exceptions::Object->throw( ref($self) . "::$method generated this error: " . $@ );
663 This method must be defined in the child class. The value is the name of the DBIC resultset.
664 For example, for borrowers, the _type method will return "Borrower".
674 Kyle M Hall <kyle@bywatersolutions.com>
676 Jonathan Druart <jonathan.druart@bugs.koha-community.org>