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Manual Reference Pages  -  DBIX::CLASS::HELPER::RESULTSET::AUTOREMOVECOLUMNS (3)

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NAME

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

CONTENTS

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>

COPYRIGHT AND LICENSE

This software is copyright (c) 2015 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.

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perl v5.20.3 DBIX::CLASS::HELPER::RESULTSET::AUTOREMOVECOLUMNS (3) 2015-11-07

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