NAME
SPOPS::Tool::CreateOnly - Make a particular object create-only -- it cannot be updated
SYNOPSIS
# Load information with create-only rule
my $spops = {
class => 'This::Class',
isa => [ 'SPOPS::DBI' ],
field => [ 'email', 'language', 'country' ],
id_field => 'email',
base_table => 'test_table',
rules_from => [ 'SPOPS::Tool::CreateOnly' ],
};
SPOPS::Initialize->process({ config => { test => $spops } });
# Fetch an object and try to modify it...
my $object = This::Class->fetch( 'prez@whitehouse.gov' );
$object->{country} = "Time/Warnerland";
# Trying to save the object throws an error:
# "Objects in [This::Class] can only be inserted, not updated. No changes made"
eval { $object->save };
if ( $@ ) { print $@ }
# Instantiate a new object and try to save it...
my $new_object = This::Class->new({ email => 'foo@bar.com',
language => 'lv',
country => 'Freedonia' });
eval { $new_object->save() }; # ...works as normal, object is saved. Hooray!DESCRIPTION
This is a simple rule to ensure that calls to save() on an already-saved object do nothing. Calling save() on a new (unsaved) object works as normal. Thus, you have create-only objects.
METHODS
behavior_factory()
Installs the behavior during the class generation process.
generate_persistence_methods()
Generates a save() method that issues a warning and a no-op when called on a saved object.
BUGS
None known.
TO DO
Nothing known.
SEE ALSO
COPYRIGHT
Copyright (c) 2001-2002 intes.net, inc.. All rights reserved.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
AUTHORS
Chris Winters <chris@cwinters.com>