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package Catmandu::Fix::disassoc;
use Catmandu::Sane;
use Catmandu::Util::Path qw(as_path);
use Catmandu::Util qw(is_array_ref);
use Moo;
use namespace::clean;
use Catmandu::Fix::Has;
with 'Catmandu::Fix::Builder';
has old_path => (fix_arg => 1);
has new_path => (fix_arg => 1);
has key_name => (fix_arg => 1);
has value_name => (fix_arg => 1);
sub _build_fixer {
my ($self) = @_;
my $key_name = $self->key_name;
my $val_name = $self->value_name;
my $getter = as_path($self->old_path)->getter;
my $creator = as_path($self->new_path)->creator;
as_path($self->new_path)->creator(
sub {
my ($arr, $data) = @_;
if (is_array_ref($arr //= [])) {
for my $hash (@{$getter->($data)}) {
for my $key (sort keys %$hash) {
push @$arr,
{$key_name => $key, $val_name => $hash->{$key},};
}
}
}
$arr;
}
);
}
1;
__END__
=pod
=head1 NAME
Catmandu::Fix::disassoc - inverse of assoc, transform a hash into an array of key value pairs
=head1 SYNOPSIS
# {fields => {subject => 'Perl', year => 2009}}
disassoc(fields, pairs, key, val)
# {pairs => [{key => 'year', val => 2009}, {key => 'subject', val => 'Perl'}], fields => ...}
=head1 SEE ALSO
L<Catmandu::Fix::assoc>, L<Catmandu::Fix>
=cut
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