Man pages sections > man3 > DBIx::Class::Helper::Row::StorageValues

DBIx::Class::Helper::Row::StorageValues - Keep track of stored vs in-memory row

DBIx::Class::Helper::Row::StorageValues(3pm) User Contributed Perl Documentation DBIx::Class::Helper::Row::StorageValues(3pm)


DBIx::Class::Helper::Row::StorageValues - Keep track of stored vs in-memory row values


 package MyApp::Schema::Result::BlogPost;
 use parent 'DBIx::Class::Core';
    id => {
       data_type         => 'integer',
       is_auto_increment => 1,
    title => {
       data_type          => 'varchar',
       length             => 32,
       keep_storage_value => 1,
    body => {
       data_type => 'text',
 # elsewhere:
 my $post = $blog_rs->create({
   title => 'Components for fun and profit',
   body  => '...',
 $post->title('Components for fun');
 warn sprintf 'Changing title from %s to %s',
   $post->storage_value('title'), $post->title;


This component keeps track of the value for a given column in the database. If you change the column's value and do not call "update", the "storage_value" will be different; once "update" is called the "storage_value" will be set to the value of the accessor. Note that the fact that it uses the accessor is an important distinction. If you are using DBIx::Class::FilterColumn or DBIx::Class::InflateColumn it will get the non-storage or inflated values, respectively.



returns true if we should store the storage value from the database. Override this if you'd like to enable storage on all integers or something like that:
 sub _has_storage_value {
    my ( $self, $column ) = @_;
    my $info = $self->column_info($column);
    return defined $info->{data_type} && $info->{data_type} eq 'integer';


returns a list of columns to store


returns the value for that column which is in storage


Arthur Axel "fREW" Schmidt <> 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