1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
package # hide from PAUSE
DBIx::Class::Relationship::ManyToMany;
use strict;
use warnings;
sub many_to_many {
my ($class, $meth, $rel, $f_rel, $rel_attrs) = @_;
{
no strict 'refs';
no warnings 'redefine';
my $add_meth = "add_to_${meth}";
my $remove_meth = "remove_from_${meth}";
my $set_meth = "set_${meth}";
$rel_attrs->{alias} ||= $f_rel;
*{"${class}::${meth}"} = sub {
my $self = shift;
my $attrs = @_ > 1 && ref $_[$#_] eq 'HASH' ? pop(@_) : {};
my @args = ($f_rel, @_ > 0 ? @_ : undef, { %{$rel_attrs||{}}, %$attrs });
$self->search_related($rel)->search_related(
$f_rel, @_ > 0 ? @_ : undef, { %{$rel_attrs||{}}, %$attrs }
);
};
*{"${class}::${add_meth}"} = sub {
my $self = shift;
@_ > 0 or $self->throw_exception(
"${add_meth} needs an object or hashref"
);
my $source = $self->result_source;
my $schema = $source->schema;
my $rel_source_name = $source->relationship_info($rel)->{source};
my $rel_source = $schema->resultset($rel_source_name)->result_source;
my $f_rel_source_name = $rel_source->relationship_info($f_rel)->{source};
my $f_rel_rs = $schema->resultset($f_rel_source_name)->search({}, $rel_attrs||{});
my $obj;
if (ref $_[0]) {
if (ref $_[0] eq 'HASH') {
$obj = $f_rel_rs->create($_[0]);
} else {
$obj = $_[0];
}
} else {
$obj = $f_rel_rs->create({@_});
}
my $link_vals = @_ > 1 && ref $_[$#_] eq 'HASH' ? pop(@_) : {};
my $link = $self->search_related($rel)->new_result({});
$link->set_from_related($f_rel, $obj);
$link->set_columns($link_vals);
$link->insert();
};
*{"${class}::${set_meth}"} = sub {
my $self = shift;
@_ > 0 or $self->throw_exception(
"{$set_meth} needs a list of objects or hashrefs"
);
my @to_set = (ref($_[0]) eq 'ARRAY' ? @{ $_[0] } : @_);
$self->search_related($rel, {})->delete;
$self->$add_meth($_) for (@to_set);
};
*{"${class}::${remove_meth}"} = sub {
my $self = shift;
@_ > 0 && ref $_[0] ne 'HASH'
or $self->throw_exception("${remove_meth} needs an object");
my $obj = shift;
my $rel_source = $self->search_related($rel)->result_source;
my $cond = $rel_source->relationship_info($f_rel)->{cond};
my $link_cond = $rel_source->resolve_condition(
$cond, $obj, $f_rel
);
$self->search_related($rel, $link_cond)->delete;
};
}
}
1;
|
