}
push @cond, \%cond_for_obj;
}
+
# only limit resultset if there are related rows left
- if (scalar @cond) {
- $rs_rel_delist = $rs_rel_delist->search_rs( { -not => [@cond] } );
+ if ( scalar @cond ) {
+ $rs_rel_delist =
+ $rs_rel_delist->search_rs( { -not => [@cond] } );
}
}
1; # Magic true value required at end of module
__END__
-=head1 NAME
-
-DBIx::Class::ResultSet::RecursiveUpdate - like update_or_create - but recursive
-
=head1 SYNOPSIS
-The functional interface:
+ # The functional interface:
- my $new_item = DBIx::Class::ResultSet::RecursiveUpdate::Functions::recursive_update({
- resultset => $schema->resultset( 'Dvd' ),
+ my $schema = MyDB::Schema->connect();
+ my $new_item = DBIx::Class::ResultSet::RecursiveUpdate::Functions::recursive_update(
+ resultset => $schema->resultset('User'),
updates => {
- id => 1,
- owned_dvds => [
- {
- title => 'One Flew Over the Cuckoo's Nest'
- }
- ]
+ id => 1,
+ owned_dvds => [
+ {
+ title => "One Flew Over the Cuckoo's Nest"
+ }
+ ]
}
});
-As ResultSet subclass:
+ # As ResultSet subclass:
__PACKAGE__->load_namespaces( default_resultset_class => '+DBIx::Class::ResultSet::RecursiveUpdate' );
-in the Schema file (see t/lib/DBSchema.pm). Or appriopriate 'use base' in the ResultSet classes.
+ # in the Schema file (see t/lib/DBSchema.pm). Or appropriate 'use base' in the ResultSet classes.
-Then:
+ my $user = $schema->resultset('User')->recursive_update({
+ id => 1,
+ owned_dvds => [
+ {
+ title => "One Flew Over the Cuckoo's Nest"
+ }
+ ]
+ }, {
+ unknown_params_ok => 1,
+ });
- my $user = $user_rs->recursive_update( {
- id => 1,
- owned_dvds => [
- {
- title => 'One Flew Over the Cuckoo's Nest'
- }
- ]
- }
- );
-
=head1 DESCRIPTION
-This is still experimental. I've added a functional interface so that it can be used
-in Form Processors and not require modification of the model.
+This is still experimental.
-You can feed the ->create method with a recursive datastructure and have the related records
-created. Unfortunately you cannot do a similar thing with update_or_create - this module
-tries to fill that void.
+You can feed the ->create method of DBIx::Class with a recursive datastructure
+and have the related records created. Unfortunately you cannot do a similar
+thing with update_or_create.
+This module tries to fill that void until L<DBIx::Class> has an api itself.
-It is a base class for ResultSets providing just one method: recursive_update
+The functional interface can be used without modifications of the model,
+for example by form processors like L<HTML::FormHandler::Model::DBIC>.
+
+It is a base class for L<DBIx::Class::ResultSet>s providing the method recursive_update
which works just like update_or_create but can recursively update or create
data objects composed of multiple rows. All rows need to be identified by primary keys
- so you need to provide them in the update structure (unless they can be deduced from
the parent row - for example when you have a belongs_to relationship).
-If not all colums comprising the primary key are specified - then a new row will be created,
+If not all columns comprising the primary key are specified a new row will be created,
with the expectation that the missing columns will be filled by it (as in the case of auto_increment
primary keys).
[ 'id' ]
);
-This will work with a new DBIC release.
-
For a many_to_many (pseudo) relation you can supply a list of primary keys
-from the other table - and it will link the record at hand to those and
+from the other table and it will link the record at hand to those and
only those records identified by them. This is convenient for handling web
-forms with check boxes (or a SELECT box with multiple choice) that let you
+forms with check boxes (or a select field with multiple choice) that lets you
update such (pseudo) relations.
-For a description how to set up base classes for ResultSets see load_namespaces
-in DBIx::Class::Schema.
+For a description how to set up base classes for ResultSets see L<DBIx::Class::Schema/load_namespaces>.
=head1 DESIGN CHOICES
=head2 Treatment of many-to-many pseudo relations
-The function gets the information about m2m relations from DBIx::Class::IntrospectableM2M.
+The function gets the information about m2m relations from L<DBIx::Class::IntrospectableM2M>.
If it isn't loaded in the ResultSource classes the code relies on the fact that:
if($object->can($name) and