use strict;
use warnings;
+use Scalar::Util ();
use base qw/DBIx::Class/;
=head1 NAME
To add an C<OR>ed condition, use an arrayref of hashrefs. See the
L<SQL::Abstract> documentation for more details.
-Valid attributes are as follows:
+In addition to standard result set attributes, the following attributes are also valid:
=over 4
( $objects_rs ) = $rs->search_related_rs('relname', $cond, $attrs);
-This method works exactly the same as search_related_rs, except that
-it garauntees that it will return a restultset even in list context.
+This method works exactly the same as search_related, except that
+it garauntees a restultset, even in list context.
=cut
my $new_obj = $obj->new_related('relname', \%col_data);
Create a new item of the related foreign class. If called on a
-L<DBIx::Class::Manual::Glossary/"Row"> object, it will magically set any
-primary key values into foreign key columns for you. The newly created item
-will not be saved into your storage until you call L<DBIx::Class::Row/insert>
+L<Row|DBIx::Class::Manual::Glossary/"Row"> object, it will magically
+set any foreign key columns of the new object to the related primary
+key columns of the source object for you. The newly created item will
+not be saved into your storage until you call L<DBIx::Class::Row/insert>
on it.
=cut
sub find_or_create_related {
my $self = shift;
- return $self->find_related(@_) || $self->create_related(@_);
+ my $obj = $self->find_related(@_);
+ return (defined($obj) ? $obj : $self->create_related(@_));
}
=head2 update_or_create_related
if (defined $f_obj) {
my $f_class = $self->result_source->schema->class($rel_obj->{class});
$self->throw_exception( "Object $f_obj isn't a ".$f_class )
- unless $f_obj->isa($f_class);
+ unless Scalar::Util::blessed($f_obj) and $f_obj->isa($f_class);
}
$self->set_columns(
$self->result_source->resolve_condition(
return $obj;
}
-1;
+=head2 add_to_$rel
+
+B<Currently only available for C<has_many>, C<many-to-many> and 'multi' type
+relationships.>
+
+=over 4
+
+=item Arguments: ($foreign_vals | $obj), $link_vals?
+
+=back
+
+ my $role = $schema->resultset('Role')->find(1);
+ $actor->add_to_roles($role);
+ # creates a My::DBIC::Schema::ActorRoles linking table row object
+
+ $actor->add_to_roles({ name => 'lead' }, { salary => 15_000_000 });
+ # creates a new My::DBIC::Schema::Role row object and the linking table
+ # object with an extra column in the link
+
+Adds a linking table object for C<$obj> or C<$foreign_vals>. If the first
+argument is a hash reference, the related object is created first with the
+column values in the hash. If an object reference is given, just the linking
+table object is created. In either case, any additional column values for the
+linking table object can be specified in C<$link_vals>.
+
+=head2 set_$rel
+
+B<Currently only available for C<many-to-many> relationships.>
+
+=over 4
+
+=item Arguments: (\@hashrefs | \@objs)
+
+=back
+
+ my $actor = $schema->resultset('Actor')->find(1);
+ my @roles = $schema->resultset('Role')->search({ role =>
+ { '-in' -> ['Fred', 'Barney'] } } );
+
+ $actor->set_roles(\@roles);
+ # Replaces all of $actor's previous roles with the two named
+
+Replace all the related objects with the given reference to a list of
+objects. This does a C<delete> B<on the link table resultset> to remove the
+association between the current object and all related objects, then calls
+C<add_to_$rel> repeatedly to link all the new objects.
+
+Note that this means that this method will B<not> delete any objects in the
+table on the right side of the relation, merely that it will delete the link
+between them.
+
+Due to a mistake in the original implementation of this method, it will also
+accept a list of objects or hash references. This is B<deprecated> and will be
+removed in a future version.
+
+=head2 remove_from_$rel
+
+B<Currently only available for C<many-to-many> relationships.>
+
+=over 4
+
+=item Arguments: $obj
+
+=back
+
+ my $role = $schema->resultset('Role')->find(1);
+ $actor->remove_from_roles($role);
+ # removes $role's My::DBIC::Schema::ActorRoles linking table row object
+
+Removes the link between the current object and the related object. Note that
+the related object itself won't be deleted unless you call ->delete() on
+it. This method just removes the link between the two objects.
=head1 AUTHORS
=cut
+1;