VERSION

Version 0.999002

NAME

DBIx::Class::ResultSet::WithMetaData

SYNOPSIS

package MyApp::Schema::ResultSet::ObjectType;

use Moose;
use MooseX::Method::Signatures;
extends 'DBIx::Class::ResultSet::WithMetaData;

method with_substr () {
  foreach my $row ($self->all) {
    my $substr = substr($row->name, 0, 3);
    $self->add_row_info(row => $row, info => { substr => $substr });
  }
  return $self;
}

...


# then somewhere else

my $object_type_arrayref = $object_type_rs->with_substr->display();

# [{
#    'artistid' => '1',
#    'name' => 'Caterwauler McCrae',
#    'substr' => 'Cat'
#  },
#  {
#    'artistid' => '2',
#    'name' => 'Random Boy Band',
#    'substr' => 'Ran'
#  },
#  {
#    'artistid' => '3',
#    'name' => 'We Are Goth',
#    'substr' => 'We '
#  }]

DESCRIPTION

Attach metadata to rows by chaining ResultSet methods together. When the ResultSet is flattened to an ArrayRef the attached metadata is merged with the row hashes to give a combined 'hash-plus-other-stuff' representation.

METHODS

display

Arguments: none

Return Value: ArrayRef

$arrayref_of_row_hashrefs = $rs->display();

This method uses DBIx::Class::ResultClass::HashRefInflator to convert all rows in the ResultSet to HashRefs. These are then merged with any metadata that had been attached to the rows using "add_row_info".

add_row_info

Arguments: row => DBIx::Class::Row object, info => HashRef to attach to the row

Return Value: ResultSet

$rs = $rs->add_row_info(row => $row, info => { dates => [qw/mon weds fri/] } );

This method allows you to attach a HashRef of metadata to a row which will be merged with that row when the ResultSet is flattened to a datastructure with "display".

AUTHOR

Luke Saunders <luke.saunders@gmail.com>

THANKS

As usual, thanks to Matt S Trout for the sanity check.

LICENSE

This library is free software under the same license as perl itself