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1 | package # hide from PAUSE |
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2 | DBIx::Class::Relationship::Accessor; |
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3 | |
4 | use strict; |
5 | use warnings; |
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6 | use Sub::Name; |
7 | use DBIx::Class::Carp; |
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8 | use DBIx::Class::_Util 'fail_on_internal_wantarray'; |
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9 | use namespace::clean; |
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10 | |
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11 | our %_pod_inherit_config = |
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12 | ( |
13 | class_map => { 'DBIx::Class::Relationship::Accessor' => 'DBIx::Class::Relationship' } |
14 | ); |
15 | |
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16 | sub register_relationship { |
17 | my ($class, $rel, $info) = @_; |
18 | if (my $acc_type = $info->{attrs}{accessor}) { |
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19 | $class->add_relationship_accessor($rel => $acc_type); |
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20 | } |
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21 | $class->next::method($rel => $info); |
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22 | } |
23 | |
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24 | sub add_relationship_accessor { |
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25 | my ($class, $rel, $acc_type) = @_; |
26 | my %meth; |
27 | if ($acc_type eq 'single') { |
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28 | my $rel_info = $class->relationship_info($rel); |
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29 | $meth{$rel} = sub { |
30 | my $self = shift; |
31 | if (@_) { |
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}; |
36 | } else { |
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37 | my $cond = $self->result_source->_resolve_condition( |
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38 | $rel_info->{cond}, $rel, $self, $rel |
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39 | ); |
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40 | if ($rel_info->{attrs}->{undef_on_null_fk}){ |
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41 | return undef unless ref($cond) eq 'HASH'; |
42 | return undef if grep { not defined $_ } values %$cond; |
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43 | } |
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44 | my $val = $self->find_related($rel, {}, {}); |
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45 | return $val unless $val; # $val instead of undef so that null-objects can go through |
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46 | |
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47 | return $self->{_relationship_data}{$rel} = $val; |
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48 | } |
49 | }; |
50 | } elsif ($acc_type eq 'filter') { |
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51 | $class->throw_exception("No such column '$rel' to filter") |
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52 | unless $class->has_column($rel); |
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53 | my $f_class = $class->relationship_info($rel)->{class}; |
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54 | $class->inflate_column($rel, |
55 | { inflate => sub { |
56 | my ($val, $self) = @_; |
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57 | return $self->find_or_new_related($rel, {}, {}); |
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58 | }, |
59 | deflate => sub { |
60 | my ($val, $self) = @_; |
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61 | $self->throw_exception("'$val' isn't a $f_class") unless $val->isa($f_class); |
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62 | |
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 |
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68 | my ($pk_col, @rest) = $val->result_source->_pri_cols_or_die; |
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69 | $self->throw_exception( |
70 | "Relationship '$rel' of type 'filter' can not work with a multicolumn primary key on source '$f_class'" |
71 | ) if @rest; |
72 | |
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73 | my $pk_val = $val->get_column($pk_col); |
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74 | carp_unique ( |
75 | "Unable to deflate 'filter'-type relationship '$rel' (related object " |
76 | . "primary key not retrieved), assuming undef instead" |
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77 | ) if ( ! defined $pk_val and $val->in_storage ); |
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78 | |
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79 | return $pk_val; |
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80 | } |
81 | } |
82 | ); |
83 | } elsif ($acc_type eq 'multi') { |
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84 | $meth{$rel} = sub { |
85 | DBIx::Class::_ENV_::ASSERT_NO_INTERNAL_WANTARRAY and wantarray and my $sog = fail_on_internal_wantarray($_[0]); |
86 | shift->search_related($rel, @_) |
87 | }; |
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88 | $meth{"${rel}_rs"} = sub { shift->search_related_rs($rel, @_) }; |
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89 | $meth{"add_to_${rel}"} = sub { shift->create_related($rel, @_); }; |
90 | } else { |
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91 | $class->throw_exception("No such relationship accessor type '$acc_type'"); |
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92 | } |
93 | { |
94 | no strict 'refs'; |
95 | no warnings 'redefine'; |
96 | foreach my $meth (keys %meth) { |
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97 | my $name = join '::', $class, $meth; |
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98 | *$name = subname($name, $meth{$meth}); |
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99 | } |
100 | } |
101 | } |
102 | |
103 | 1; |