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};
75 $self->{_result} = $schema->resultset( $class->_type() )
79 croak("No _type found! Koha::Object must be subclassed!")
80 unless $class->_type();
82 bless( $self, $class );
86 =head3 Koha::Object->_new_from_dbic();
88 my $object = Koha::Object->_new_from_dbic($dbic_row);
93 my ( $class, $dbic_row ) = @_;
97 $self->{_result} = $dbic_row;
99 croak("No _type found! Koha::Object must be subclassed!")
100 unless $class->_type();
102 croak( "DBIC result _type " . ref( $self->{_result} ) . " isn't of the _type " . $class->_type() )
103 unless ref( $self->{_result} ) eq "Koha::Schema::Result::" . $class->_type();
105 bless( $self, $class );
109 =head3 $object->store();
111 Saves the object in storage.
112 If the object is new, it will be created.
113 If the object previously existed, it will be updated.
116 $self if the store was a success
117 undef if the store failed
124 my $columns_info = $self->_result->result_source->columns_info;
126 # Handle not null and default values for integers and dates
127 foreach my $col ( keys %{$columns_info} ) {
129 if ( _numeric_column_type( $columns_info->{$col}->{data_type} ) ) {
130 # Has been passed but not a number, usually an empty string
131 my $value = $self->_result()->get_column($col);
132 if ( defined $value and not looks_like_number( $value ) ) {
133 if ( $columns_info->{$col}->{is_nullable} ) {
134 # If nullable, default to null
135 $self->_result()->set_column($col => undef);
137 # If cannot be null, get the default value
138 # What if cannot be null and does not have a default value? Possible?
139 $self->_result()->set_column($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 my $value = $self->_result()->get_column($col);
146 if ( defined $value and not $value ) {
147 if ( $columns_info->{$col}->{is_nullable} ) {
148 $self->_result()->set_column($col => undef);
150 $self->_result()->set_column($col => $columns_info->{$col}->{default_value});
157 return $self->_result()->update_or_insert() ? $self : undef;
160 # Catch problems and raise relevant exceptions
161 if (ref($_) eq 'DBIx::Class::Exception') {
162 if ( $_->{msg} =~ /Cannot add or update a child row: a foreign key constraint fails/ ) {
164 # FIXME: MySQL error, if we support more DB engines we should implement this for each
165 if ( $_->{msg} =~ /FOREIGN KEY \(`(?<column>.*?)`\)/ ) {
166 Koha::Exceptions::Object::FKConstraint->throw(
167 error => 'Broken FK constraint',
168 broken_fk => $+{column}
172 elsif( $_->{msg} =~ /Duplicate entry '(.*?)' for key '(?<key>.*?)'/ ) {
173 Koha::Exceptions::Object::DuplicateID->throw(
174 error => 'Duplicate ID',
175 duplicate_id => $+{key}
178 elsif( $_->{msg} =~ /Incorrect (?<type>\w+) value: '(?<value>.*)' for column \W?(?<property>\S+)/ ) { # The optional \W in the regex might be a quote or backtick
180 my $value = $+{value};
181 my $property = $+{property};
182 $property =~ s/['`]//g;
183 Koha::Exceptions::Object::BadValue->throw(
186 property => $property =~ /(\w+\.\w+)$/ ? $1 : $property, # results in table.column without quotes or backtics
190 # Catch-all for foreign key breakages. It will help find other use cases
195 =head3 $object->delete();
197 Removes the object from storage.
200 1 if the deletion was a success
201 0 if the deletion failed
202 -1 if the object was never in storage
209 # Deleting something not in storage throws an exception
210 return -1 unless $self->_result()->in_storage();
212 # Return a boolean for succcess
213 return $self->_result()->delete() ? 1 : 0;
216 =head3 $object->set( $properties_hashref )
220 property1 => $property1,
221 property2 => $property2,
222 property3 => $propery3,
226 Enables multiple properties to be set at once
229 1 if all properties were set.
230 0 if one or more properties do not exist.
231 undef if all properties exist but a different error
232 prevents one or more properties from being set.
234 If one or more of the properties do not exist,
235 no properties will be set.
240 my ( $self, $properties ) = @_;
242 my @columns = @{$self->_columns()};
244 foreach my $p ( keys %$properties ) {
245 unless ( grep {/^$p$/} @columns ) {
246 Koha::Exceptions::Object::PropertyNotFound->throw( "No property $p for " . ref($self) );
250 return $self->_result()->set_columns($properties) ? $self : undef;
253 =head3 $object->unblessed();
255 Returns an unblessed representation of object.
262 return { $self->_result->get_columns };
265 =head3 $object->get_from_storage;
269 sub get_from_storage {
270 my ( $self, $attrs ) = @_;
271 my $stored_object = $self->_result->get_from_storage($attrs);
272 return unless $stored_object;
273 my $object_class = Koha::Object::_get_object_class( $self->_result->result_class );
274 return $object_class->_new_from_dbic($stored_object);
277 =head3 $object->TO_JSON
279 Returns an unblessed representation of the object, suitable for JSON output.
287 my $unblessed = $self->unblessed;
288 my $columns_info = Koha::Database->new->schema->resultset( $self->_type )
289 ->result_source->{_columns};
291 foreach my $col ( keys %{$columns_info} ) {
293 if ( $columns_info->{$col}->{is_boolean} )
294 { # Handle booleans gracefully
296 = ( $unblessed->{$col} )
300 elsif ( _numeric_column_type( $columns_info->{$col}->{data_type} )
301 and looks_like_number( $unblessed->{$col} )
304 # TODO: Remove once the solution for
305 # https://rt.cpan.org/Ticket/Display.html?id=119904
306 # is ported to whatever distro we support by that time
307 $unblessed->{$col} += 0;
309 elsif ( _datetime_column_type( $columns_info->{$col}->{data_type} ) ) {
311 return unless $unblessed->{$col};
312 $unblessed->{$col} = output_pref({
313 dateformat => 'rfc3339',
314 dt => dt_from_string($unblessed->{$col}, 'sql'),
322 sub _date_or_datetime_column_type {
323 my ($column_type) = @_;
331 return ( grep { $column_type eq $_ } @dt_types) ? 1 : 0;
333 sub _datetime_column_type {
334 my ($column_type) = @_;
341 return ( grep { $column_type eq $_ } @dt_types) ? 1 : 0;
344 sub _numeric_column_type {
345 # TODO: Remove once the solution for
346 # https://rt.cpan.org/Ticket/Display.html?id=119904
347 # is ported to whatever distro we support by that time
348 my ($column_type) = @_;
350 my @numeric_types = (
362 return ( grep { $column_type eq $_ } @numeric_types) ? 1 : 0;
365 =head3 $object->unblessed_all_relateds
367 my $everything_into_one_hashref = $object->unblessed_all_relateds
369 The unblessed method only retrieves column' values for the column of the object.
370 In a *few* cases we want to retrieve the information of all the prefetched data.
374 sub unblessed_all_relateds {
378 my $related_resultsets = $self->_result->{related_resultsets} || {};
379 my $rs = $self->_result;
380 while ( $related_resultsets and %$related_resultsets ) {
381 my @relations = keys %{ $related_resultsets };
383 my $relation = $relations[0];
384 $rs = $rs->related_resultset($relation)->get_cache;
385 $rs = $rs->[0]; # Does it makes sense to have several values here?
386 my $object_class = Koha::Object::_get_object_class( $rs->result_class );
387 my $koha_object = $object_class->_new_from_dbic( $rs );
388 $related_resultsets = $rs->{related_resultsets};
389 %data = ( %data, %{ $koha_object->unblessed } );
392 %data = ( %data, %{ $self->unblessed } );
396 =head3 $object->_result();
398 Returns the internal DBIC Row object
405 # If we don't have a dbic row at this point, we need to create an empty one
407 Koha::Database->new()->schema()->resultset( $self->_type() )->new({});
409 return $self->{_result};
412 =head3 $object->_columns();
414 Returns an arrayref of the table columns
421 # If we don't have a dbic row at this point, we need to create an empty one
422 $self->{_columns} ||= [ $self->_result()->result_source()->columns() ];
424 return $self->{_columns};
427 sub _get_object_class {
431 if( $type->can('koha_object_class') ) {
432 return $type->koha_object_class;
434 $type =~ s|Schema::Result::||;
440 The autoload method is used only to get and set values for an objects properties.
447 my $method = our $AUTOLOAD;
450 my @columns = @{$self->_columns()};
451 # Using direct setter/getter like $item->barcode() or $item->barcode($barcode);
452 if ( grep {/^$method$/} @columns ) {
454 $self->_result()->set_column( $method, @_ );
457 my $value = $self->_result()->get_column( $method );
462 my @known_methods = qw( is_changed id in_storage get_column discard_changes update make_column_dirty );
464 Koha::Exceptions::Object::MethodNotCoveredByTests->throw(
465 error => sprintf("The method %s->%s is not covered by tests!", ref($self), $method),
467 ) unless grep { /^$method$/ } @known_methods;
470 my $r = eval { $self->_result->$method(@_) };
472 Koha::Exceptions::Object->throw( ref($self) . "::$method generated this error: " . $@ );
479 This method must be defined in the child class. The value is the name of the DBIC resultset.
480 For example, for borrowers, the _type method will return "Borrower".
490 Kyle M Hall <kyle@bywatersolutions.com>
492 Jonathan Druart <jonathan.druart@bugs.koha-community.org>