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DBIx::Class::Helper::ResultSet::AutoRemoveColumns - Automatically remove columns

DBIx::Class::Helper::ResultSet::AutoRemoveColumns(3pm) User Contributed Perl Documentation DBIx::Class::Helper::ResultSet::AutoRemoveColumns(3pm)

NAME

DBIx::Class::Helper::ResultSet::AutoRemoveColumns - Automatically remove columns from a ResultSet

SYNOPSIS

 package MySchema::Result::Bar;
 use strict;
 use warnings;
 use parent 'DBIx::Class::Core';
 __PACKAGE__->table('KittenRobot');
 __PACKAGE__->add_columns(
    id => {
       data_type         => 'integer',
       is_auto_increment => 1,
    },
    kitten => {
       data_type         => 'integer',
    },
    robot => {
       data_type         => 'text',
       is_nullable       => 1,
    },
    your_mom => {
       data_type         => 'blob',
       is_nullable       => 1,
       remove_column     => 0,
    },
 );
 1;
 package MySchema::ResultSet::Bar;
 use strict;
 use warnings;
 use parent 'DBIx::Class::ResultSet';
 __PACKAGE__->load_components('Helper::ResultSet::AutoRemoveColumns');

DESCRIPTION

This component automatically removes "heavy-weight" columns. To be specific, columns of type "text", "ntext", "blob", "clob", or "bytea". You may use the "remove_column" key in the column info to specify directly whether or not to remove the column automatically. See "NOTE" in DBIx::Class::Helper::ResultSet for a nice way to apply it to your entire schema.

METHODS

_should_column_fetch

 $self->_should_column_fetch('kitten')
returns true if a column should be fetched or not. This fetches a column if it is not of type "text", "ntext", "blob", "clob", or "bytea" or the "remove_column" is set to true. If you only wanted to explicitly state which columns to remove you might override this method like this:
 sub _should_column_fetch {
    my ( $self, $column ) = @_;
    my $info = $self->column_info($column);
    return !defined $info->{remove_column} || $info->{remove_column};
 }

fetchable_columns

simply returns a list of columns that are fetchable.

AUTHOR

Arthur Axel "fREW" Schmidt <frioux+cpan@gmail.com> This software is copyright (c) 2017 by Arthur Axel "fREW" Schmidt.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
2017-07-03 perl v5.24.1