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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 DBIx::Class::Carp; |
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7 | use DBIx::Class::_Util qw(quote_sub perlstring); |
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8 | use namespace::clean; |
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9 | |
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10 | our %_pod_inherit_config = |
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11 | ( |
12 | class_map => { 'DBIx::Class::Relationship::Accessor' => 'DBIx::Class::Relationship' } |
13 | ); |
14 | |
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15 | sub register_relationship { |
16 | my ($class, $rel, $info) = @_; |
17 | if (my $acc_type = $info->{attrs}{accessor}) { |
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18 | $class->add_relationship_accessor($rel => $acc_type); |
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19 | } |
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20 | $class->next::method($rel => $info); |
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21 | } |
22 | |
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23 | sub add_relationship_accessor { |
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24 | my ($class, $rel, $acc_type) = @_; |
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25 | |
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26 | if ($acc_type eq 'single') { |
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27 | quote_sub "${class}::${rel}" => sprintf(<<'EOC', perlstring $rel); |
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28 | my $self = shift; |
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29 | |
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30 | if (@_) { |
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31 | $self->set_from_related( %1$s => @_ ); |
32 | return $self->{_relationship_data}{%1$s} = $_[0]; |
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33 | } |
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34 | elsif (exists $self->{_relationship_data}{%1$s}) { |
35 | return $self->{_relationship_data}{%1$s}; |
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36 | } |
37 | else { |
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38 | my $relcond = $self->result_source->_resolve_relationship_condition( |
39 | rel_name => %1$s, |
40 | foreign_alias => %1$s, |
41 | self_alias => 'me', |
42 | self_result_object => $self, |
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43 | ); |
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44 | |
45 | return undef if ( |
46 | $relcond->{join_free_condition} |
47 | and |
48 | $relcond->{join_free_condition} ne DBIx::Class::_Util::UNRESOLVABLE_CONDITION |
49 | and |
50 | scalar grep { not defined $_ } values %%{ $relcond->{join_free_condition} || {} } |
51 | and |
52 | $self->result_source->relationship_info(%1$s)->{attrs}{undef_on_null_fk} |
53 | ); |
54 | |
55 | my $val = $self->search_related( %1$s )->single; |
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56 | return $val unless $val; # $val instead of undef so that null-objects can go through |
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57 | |
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58 | return $self->{_relationship_data}{%1$s} = $val; |
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59 | } |
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60 | EOC |
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61 | } |
62 | elsif ($acc_type eq 'filter') { |
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63 | $class->throw_exception("No such column '$rel' to filter") |
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64 | unless $class->has_column($rel); |
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65 | |
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66 | my $f_class = $class->relationship_info($rel)->{class}; |
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67 | |
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68 | $class->inflate_column($rel, { |
69 | inflate => sub { |
70 | my ($val, $self) = @_; |
71 | return $self->find_or_new_related($rel, {}, {}); |
72 | }, |
73 | deflate => sub { |
74 | my ($val, $self) = @_; |
75 | $self->throw_exception("'$val' isn't a $f_class") unless $val->isa($f_class); |
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76 | |
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77 | # MASSIVE FIXME - this code assumes we pointed at the PK, but the belongs_to |
78 | # helper does not check any of this |
79 | # fixup the code a bit to make things saner, but ideally 'filter' needs to |
80 | # be deprecated ASAP and removed shortly after |
81 | # Not doing so before 0.08250 however, too many things in motion already |
82 | my ($pk_col, @rest) = $val->result_source->_pri_cols_or_die; |
83 | $self->throw_exception( |
84 | "Relationship '$rel' of type 'filter' can not work with a multicolumn primary key on source '$f_class'" |
85 | ) if @rest; |
86 | |
87 | my $pk_val = $val->get_column($pk_col); |
88 | carp_unique ( |
89 | "Unable to deflate 'filter'-type relationship '$rel' (related object " |
90 | . "primary key not retrieved), assuming undef instead" |
91 | ) if ( ! defined $pk_val and $val->in_storage ); |
92 | |
93 | return $pk_val; |
94 | }, |
95 | }); |
96 | } |
97 | elsif ($acc_type eq 'multi') { |
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98 | |
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99 | quote_sub "${class}::${rel}_rs", "shift->search_related_rs( $rel => \@_ )"; |
100 | quote_sub "${class}::add_to_${rel}", "shift->create_related( $rel => \@_ )"; |
101 | quote_sub "${class}::${rel}", sprintf( <<'EOC', perlstring $rel ); |
102 | DBIx::Class::_ENV_::ASSERT_NO_INTERNAL_WANTARRAY and my $sog = DBIx::Class::_Util::fail_on_internal_wantarray; |
103 | shift->search_related( %s => @_ ) |
104 | EOC |
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105 | } |
106 | else { |
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107 | $class->throw_exception("No such relationship accessor type '$acc_type'"); |
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108 | } |
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109 | |
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110 | } |
111 | |
112 | 1; |