1 package # hide from PAUSE
2 DBIx::Class::Relationship::Accessor;
8 use DBIx::Class::_Util 'fail_on_internal_wantarray';
11 our %_pod_inherit_config =
13 class_map => { 'DBIx::Class::Relationship::Accessor' => 'DBIx::Class::Relationship' }
16 sub register_relationship {
17 my ($class, $rel, $info) = @_;
18 if (my $acc_type = $info->{attrs}{accessor}) {
19 $class->add_relationship_accessor($rel => $acc_type);
21 $class->next::method($rel => $info);
24 sub add_relationship_accessor {
25 my ($class, $rel, $acc_type) = @_;
27 if ($acc_type eq 'single') {
28 my $rel_info = $class->relationship_info($rel);
32 $self->set_from_related($rel, @_);
33 return $self->{_relationship_data}{$rel} = $_[0];
34 } elsif (exists $self->{_relationship_data}{$rel}) {
35 return $self->{_relationship_data}{$rel};
37 my $cond = $self->result_source->_resolve_condition(
38 $rel_info->{cond}, $rel, $self, $rel
40 if ($rel_info->{attrs}->{undef_on_null_fk}){
41 return undef unless ref($cond) eq 'HASH';
42 return undef if grep { not defined $_ } values %$cond;
44 my $val = $self->find_related($rel, {}, {});
45 return $val unless $val; # $val instead of undef so that null-objects can go through
47 return $self->{_relationship_data}{$rel} = $val;
50 } elsif ($acc_type eq 'filter') {
51 $class->throw_exception("No such column '$rel' to filter")
52 unless $class->has_column($rel);
53 my $f_class = $class->relationship_info($rel)->{class};
54 $class->inflate_column($rel,
56 my ($val, $self) = @_;
57 return $self->find_or_new_related($rel, {}, {});
60 my ($val, $self) = @_;
61 $self->throw_exception("'$val' isn't a $f_class") unless $val->isa($f_class);
63 # MASSIVE FIXME - this code assumes we pointed at the PK, but the belongs_to
64 # helper does not check any of this
65 # fixup the code a bit to make things saner, but ideally 'filter' needs to
66 # be deprecated ASAP and removed shortly after
67 # Not doing so before 0.08250 however, too many things in motion already
68 my ($pk_col, @rest) = $val->result_source->_pri_cols_or_die;
69 $self->throw_exception(
70 "Relationship '$rel' of type 'filter' can not work with a multicolumn primary key on source '$f_class'"
73 my $pk_val = $val->get_column($pk_col);
75 "Unable to deflate 'filter'-type relationship '$rel' (related object "
76 . "primary key not retrieved), assuming undef instead"
77 ) if ( ! defined $pk_val and $val->in_storage );
83 } elsif ($acc_type eq 'multi') {
85 DBIx::Class::_ENV_::ASSERT_NO_INTERNAL_WANTARRAY and my $sog = fail_on_internal_wantarray;
86 shift->search_related($rel, @_)
88 $meth{"${rel}_rs"} = sub { shift->search_related_rs($rel, @_) };
89 $meth{"add_to_${rel}"} = sub { shift->create_related($rel, @_); };
91 $class->throw_exception("No such relationship accessor type '$acc_type'");
95 no warnings 'redefine';
96 foreach my $meth (keys %meth) {
97 my $name = join '::', $class, $meth;
98 *$name = subname($name, $meth{$meth});