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1 | package # hide from PAUSE |
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2 | DBIx::Class::Relationship::ManyToMany; |
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3 | |
4 | use strict; |
5 | use warnings; |
6 | |
7 | sub many_to_many { |
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8 | my ($class, $meth, $rel, $f_rel, $rel_attrs) = @_; |
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9 | { |
10 | no strict 'refs'; |
11 | no warnings 'redefine'; |
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12 | |
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13 | my $add_meth = "add_to_${meth}"; |
14 | my $remove_meth = "remove_from_${meth}"; |
15 | my $set_meth = "set_${meth}"; |
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16 | |
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17 | *{"${class}::${meth}"} = sub { |
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18 | my $self = shift; |
19 | my $attrs = @_ > 1 && ref $_[$#_] eq 'HASH' ? pop(@_) : {}; |
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20 | my @args = ($f_rel, @_ > 0 ? @_ : undef, { %{$rel_attrs||{}}, %$attrs }); |
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21 | $self->search_related($rel)->search_related( |
22 | $f_rel, @_ > 0 ? @_ : undef, { %{$rel_attrs||{}}, %$attrs } |
23 | ); |
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24 | }; |
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25 | |
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26 | *{"${class}::${add_meth}"} = sub { |
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27 | my $self = shift; |
28 | @_ > 0 or $self->throw_exception( |
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29 | "${add_meth} needs an object or hashref" |
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30 | ); |
31 | my $source = $self->result_source; |
32 | my $schema = $source->schema; |
33 | my $rel_source_name = $source->relationship_info($rel)->{source}; |
34 | my $rel_source = $schema->resultset($rel_source_name)->result_source; |
35 | my $f_rel_source_name = $rel_source->relationship_info($f_rel)->{source}; |
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36 | my $f_rel_rs = $schema->resultset($f_rel_source_name)->search({}, $rel_attrs||{}); |
37 | |
38 | my $obj; |
39 | if (ref $_[0]) { |
40 | if (ref $_[0] eq 'HASH') { |
41 | $obj = $f_rel_rs->create($_[0]); |
42 | } else { |
43 | $obj = $_[0]; |
44 | } |
45 | } else { |
46 | $obj = $f_rel_rs->create({@_}); |
47 | } |
48 | |
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49 | my $link_vals = @_ > 1 && ref $_[$#_] eq 'HASH' ? pop(@_) : {}; |
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50 | my $link = $self->search_related($rel)->new_result({}); |
51 | $link->set_from_related($f_rel, $obj); |
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52 | $link->set_columns($link_vals); |
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53 | $link->insert(); |
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54 | }; |
55 | |
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56 | *{"${class}::${set_meth}"} = sub { |
57 | my $self = shift; |
58 | @_ > 0 or $self->throw_exception( |
59 | "{$set_meth} needs a list of objects or hashrefs" |
60 | ); |
61 | $self->search_related($rel, {})->delete; |
62 | $self->$add_meth(shift) while (defined $_[0]); |
63 | }; |
64 | |
65 | *{"${class}::${remove_meth}"} = sub { |
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66 | my $self = shift; |
67 | @_ > 0 && ref $_[0] ne 'HASH' |
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68 | or $self->throw_exception("${remove_meth} needs an object"); |
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69 | my $obj = shift; |
70 | my $rel_source = $self->search_related($rel)->result_source; |
71 | my $cond = $rel_source->relationship_info($f_rel)->{cond}; |
72 | my $link_cond = $rel_source->resolve_condition( |
73 | $cond, $obj, $f_rel |
74 | ); |
75 | $self->search_related($rel, $link_cond)->delete; |
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76 | }; |
77 | |
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78 | } |
79 | } |
80 | |
81 | 1; |