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NAME
Class::DBI::Plugin::RetrieveAll - more complex retrieve_all() for
Class::DBI
SYNOPSIS
use base 'Class::DBI';
use Class::DBI::Plugin::RetrieveAll;
my @by_date = My::Class->retrieve_all_sorted_by("date");
# or
__PACKAGE__->retrieve_all_sort_field('date');
my @by_date = My::Class->retrieve_all;
DESCRIPTION
This is a simple plugin to a Class::DBI subclass that allows for simple
sorting of the results of a retrieve_all().
There are two main ways to use this.
Firstly, we create a new method 'retrieve_all_sorted_by' which takes an
argument of how to sort.
We also add a method for 'retrieve_all_sort_field' that sets a default
field that any retrieve_all() will use for sorting.
METHODS
retrieve_all_sorted_by
my @by_date = My::Class->retrieve_all_sorted_by("date");
This method will be exported into the calling class, and allows for
retrieving all the objects of the class, sorted by the given column.
The argument given will be passed straight through to the database 'as
is', and is not checked in any way, so an error here will usually in an
error from the database, rather than Class::DBI itself.
This makes it possible to pass more complex ORDER BY clauses through:
my @by_date = My::Class->retrieve_all_sorted_by("date DESC, reference_no");
retrieve_all_sort_field
__PACKAGE__->retrieve_all_sort_field('date');
This method changes the default retrieve_all() in the Class to be
auto-sorted by the field given. Again this will be passed through
directly, so you can have complex ORDER BY clauses.
AUTHOR
Tony Bowden
BUGS and QUERIES
Please direct all correspondence regarding this module to:
bug-Class-DBI-Plugin-RetrieveAll@rt.cpan.org
COPYRIGHT and LICENSE
Copyright (C) 2004-2006 Kasei. All rights reserved.
This module is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
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