1 package # hide from PAUSE
2 DBIx::Class::Relationship::Accessor;
7 use DBIx::Class::_Util qw(quote_sub perlstring);
10 our %_pod_inherit_config =
12 class_map => { 'DBIx::Class::Relationship::Accessor' => 'DBIx::Class::Relationship' }
15 sub register_relationship {
16 my ($class, $rel, $info) = @_;
17 if (my $acc_type = $info->{attrs}{accessor}) {
18 $class->add_relationship_accessor($rel => $acc_type);
20 $class->next::method($rel => $info);
23 sub add_relationship_accessor {
24 my ($class, $rel, $acc_type) = @_;
26 if ($acc_type eq 'single') {
27 quote_sub "${class}::${rel}" => sprintf(<<'EOC', perlstring $rel);
31 $self->set_from_related( %1$s => @_ );
32 return $self->{_relationship_data}{%1$s} = $_[0];
34 elsif (exists $self->{_relationship_data}{%1$s}) {
35 return $self->{_relationship_data}{%1$s};
38 my $rsrc = $self->result_source;
40 my $relcond = $rsrc->_resolve_relationship_condition(
42 foreign_alias => %1$s,
44 self_result_object => $self,
48 $relcond->{join_free_condition}
50 $relcond->{join_free_condition} ne DBIx::Class::_Util::UNRESOLVABLE_CONDITION
52 scalar grep { not defined $_ } values %%{ $relcond->{join_free_condition} || {} }
54 $rsrc->relationship_info(%1$s)->{attrs}{undef_on_null_fk}
57 my $val = $self->related_resultset( %1$s )->single;
58 return $val unless $val; # $val instead of undef so that null-objects can go through
60 return $self->{_relationship_data}{%1$s} = $val;
64 elsif ($acc_type eq 'filter') {
65 $class->throw_exception("No such column '$rel' to filter")
66 unless $class->result_source_instance->has_column($rel);
68 my $f_class = $class->result_source_instance
69 ->relationship_info($rel)
72 $class->inflate_column($rel, {
74 my ($val, $self) = @_;
75 return $self->find_or_new_related($rel, {});
78 my ($val, $self) = @_;
79 $self->throw_exception("'$val' isn't a $f_class") unless $val->isa($f_class);
81 # MASSIVE FIXME - this code assumes we pointed at the PK, but the belongs_to
82 # helper does not check any of this
83 # fixup the code a bit to make things saner, but ideally 'filter' needs to
84 # be deprecated ASAP and removed shortly after
85 # Not doing so before 0.08250 however, too many things in motion already
86 my ($pk_col, @rest) = $val->result_source->_pri_cols_or_die;
87 $self->throw_exception(
88 "Relationship '$rel' of type 'filter' can not work with a multicolumn primary key on source '$f_class'"
91 my $pk_val = $val->get_column($pk_col);
93 "Unable to deflate 'filter'-type relationship '$rel' (related object "
94 . "primary key not retrieved), assuming undef instead"
95 ) if ( ! defined $pk_val and $val->in_storage );
101 elsif ($acc_type eq 'multi') {
103 quote_sub "${class}::${rel}_rs", "shift->related_resultset('$rel')->search_rs( \@_ )";
104 quote_sub "${class}::add_to_${rel}", "shift->related_resultset('$rel')->new_result( \@_ )->insert";
105 quote_sub "${class}::${rel}", sprintf( <<'EOC', perlstring $rel );
106 DBIx::Class::_ENV_::ASSERT_NO_INTERNAL_WANTARRAY and my $sog = DBIx::Class::_Util::fail_on_internal_wantarray;
107 shift->related_resultset(%s)->search( @_ )
111 $class->throw_exception("No such relationship accessor type '$acc_type'");