1 package DBIx::Class::PK;
6 use base qw/DBIx::Class::Row/;
10 DBIx::Class::PK - Primary Key class
16 This class contains methods for handling primary keys and methods
25 return join(" AND ", map { "$_ = ?" } $class->primary_columns);
30 return (map { $self->{_column_data}{$_} } $self->primary_columns);
33 =head2 discard_changes
35 Re-selects the row from the database, losing any changes that had
42 delete $self->{_dirty_columns};
43 return unless $self->in_storage; # Don't reload if we aren't real!
44 my ($reload) = $self->result_source->resultset->find(map { $self->$_ } $self->primary_columns);
45 unless ($reload) { # If we got deleted in the mean-time
49 delete @{$self}{keys %$self};
50 @{$self}{keys %$reload} = values %$reload;
56 Returns the primary key(s) for a row. Can't be called as
63 $self->throw_exception( "Can't call id() as a class method" ) unless ref $self;
64 my @pk = $self->_ident_values;
65 return (wantarray ? @pk : $pk[0]);
70 Returns a unique id string identifying a row object by primary key.
71 Used by L<DBIx::Class::CDBICompat::LiveObjectIndex> and
72 L<DBIx::Class::ObjectCache>.
78 $self->throw_exception( "Can't call ID() as a class method" ) unless ref $self;
79 return undef unless $self->in_storage;
80 return $self->_create_ID(map { $_ => $self->{_column_data}{$_} } $self->primary_columns);
84 my ($self,%vals) = @_;
85 return undef unless 0 == grep { !defined } values %vals;
86 return join '|', ref $self || $self, $self->result_source->name, map { $_ . '=' . $vals{$_} } sort keys %vals;
90 my ($self, $alias) = @_;
92 $cond{(defined $alias ? "${alias}.$_" : $_)} = $self->get_column($_) for $self->primary_columns;
100 Matt S. Trout <mst@shadowcatsystems.co.uk>
104 You may distribute this code under the same terms as Perl itself.