-package DBIx::Class::Relationship::Accessor;
+package # hide from PAUSE
+ DBIx::Class::Relationship::Accessor;
use strict;
use warnings;
+use DBIx::Class::Carp;
+use DBIx::Class::_Util qw(quote_sub perlstring);
+use namespace::clean;
-sub add_relationship {
- my ($class, $rel, @rest) = @_;
- my $ret = $class->NEXT::ACTUAL::add_relationship($rel => @rest);
- my $rel_obj = $class->_relationships->{$rel};
- if (my $acc_type = $rel_obj->{attrs}{accessor}) {
+our %_pod_inherit_config =
+ (
+ class_map => { 'DBIx::Class::Relationship::Accessor' => 'DBIx::Class::Relationship' }
+ );
+
+sub register_relationship {
+ my ($class, $rel, $info) = @_;
+ if (my $acc_type = $info->{attrs}{accessor}) {
$class->add_relationship_accessor($rel => $acc_type);
}
- return $ret;
+ $class->next::method($rel => $info);
}
sub add_relationship_accessor {
my ($class, $rel, $acc_type) = @_;
- my %meth;
+
if ($acc_type eq 'single') {
- $meth{$rel} = sub {
+ quote_sub "${class}::${rel}" => sprintf(<<'EOC', perlstring $rel);
my $self = shift;
+
if (@_) {
- $self->set_from_related($rel, @_);
- return $self->{_relationship_data}{$rel} = $_[0];
- } elsif (exists $self->{_relationship_data}{$rel}) {
- return $self->{_relationship_data}{$rel};
- } else {
- my ($val) = $self->search_related($rel, {}, {});
- return unless $val;
- return $self->{_relationship_data}{$rel} = $val;
+ $self->set_from_related( %1$s => @_ );
+ return $self->{_relationship_data}{%1$s} = $_[0];
}
- };
- } elsif ($acc_type eq 'filter') {
- $class->throw("No such column $rel to filter")
- unless exists $class->_columns->{$rel};
- my $f_class = $class->_relationships->{$rel}{class};
- $class->inflate_column($rel,
- { inflate => sub {
- my ($val, $self) = @_;
- return $self->find_or_create_related($rel, {}, {});
- },
- deflate => sub {
- my ($val, $self) = @_;
- $self->throw("$val isn't a $f_class") unless $val->isa($f_class);
- return ($val->_ident_values)[0];
- # WARNING: probably breaks for multi-pri sometimes. FIXME
- }
+ elsif (exists $self->{_relationship_data}{%1$s}) {
+ return $self->{_relationship_data}{%1$s};
}
- );
- } elsif ($acc_type eq 'multi') {
- $meth{$rel} = sub { shift->search_related($rel, @_) };
- $meth{"add_to_${rel}"} = sub { shift->create_related($rel, @_); };
- } else {
- $class->throw("No such relationship accessor type $acc_type");
+ else {
+ my $rsrc = $self->result_source;
+
+ my $relcond = $rsrc->_resolve_relationship_condition(
+ rel_name => %1$s,
+ foreign_alias => %1$s,
+ self_alias => 'me',
+ self_result_object => $self,
+ );
+
+ return undef if (
+ $relcond->{join_free_condition}
+ and
+ $relcond->{join_free_condition} ne DBIx::Class::_Util::UNRESOLVABLE_CONDITION
+ and
+ scalar grep { not defined $_ } values %%{ $relcond->{join_free_condition} || {} }
+ and
+ $rsrc->relationship_info(%1$s)->{attrs}{undef_on_null_fk}
+ );
+
+ my $val = $self->search_related( %1$s )->single;
+ return $val unless $val; # $val instead of undef so that null-objects can go through
+
+ return $self->{_relationship_data}{%1$s} = $val;
+ }
+EOC
}
- {
- no strict 'refs';
- no warnings 'redefine';
- foreach my $meth (keys %meth) {
- *{"${class}::${meth}"} = $meth{$meth};
- }
+ elsif ($acc_type eq 'filter') {
+ $class->throw_exception("No such column '$rel' to filter")
+ unless $class->has_column($rel);
+
+ my $f_class = $class->relationship_info($rel)->{class};
+
+ $class->inflate_column($rel, {
+ inflate => sub {
+ my ($val, $self) = @_;
+ return $self->find_or_new_related($rel, {}, {});
+ },
+ deflate => sub {
+ my ($val, $self) = @_;
+ $self->throw_exception("'$val' isn't a $f_class") unless $val->isa($f_class);
+
+ # MASSIVE FIXME - this code assumes we pointed at the PK, but the belongs_to
+ # helper does not check any of this
+ # fixup the code a bit to make things saner, but ideally 'filter' needs to
+ # be deprecated ASAP and removed shortly after
+ # Not doing so before 0.08250 however, too many things in motion already
+ my ($pk_col, @rest) = $val->result_source->_pri_cols_or_die;
+ $self->throw_exception(
+ "Relationship '$rel' of type 'filter' can not work with a multicolumn primary key on source '$f_class'"
+ ) if @rest;
+
+ my $pk_val = $val->get_column($pk_col);
+ carp_unique (
+ "Unable to deflate 'filter'-type relationship '$rel' (related object "
+ . "primary key not retrieved), assuming undef instead"
+ ) if ( ! defined $pk_val and $val->in_storage );
+
+ return $pk_val;
+ },
+ });
}
+ elsif ($acc_type eq 'multi') {
+
+ quote_sub "${class}::${rel}_rs", "shift->search_related_rs( $rel => \@_ )";
+ quote_sub "${class}::add_to_${rel}", "shift->create_related( $rel => \@_ )";
+ quote_sub "${class}::${rel}", sprintf( <<'EOC', perlstring $rel );
+ DBIx::Class::_ENV_::ASSERT_NO_INTERNAL_WANTARRAY and my $sog = DBIx::Class::_Util::fail_on_internal_wantarray;
+ shift->search_related( %s => @_ )
+EOC
+ }
+ else {
+ $class->throw_exception("No such relationship accessor type '$acc_type'");
+ }
+
}
1;