NAME
Role::HasPayload::Merged - merge autogenerated payload with constructor-specified payload
VERSION
version 0.006
SYNOPSIS
package Example;
use Moose;
with qw(Role::HasPayload::Merged);
sub Payload { 'Role::HasPayload::Meta::Attribute::Payload' }
has height => (
is => 'ro',
traits => [ Payload ],
);
has width => (
is => 'ro',
traits => [ Payload ],
);
has color => (
is => 'ro',
);
...then...
my $example = Example->new({
height => 10,
width => 20,
color => 'blue',
payload => { depth => 30 },
});
$example->payload; # { height => 10, width => 20, depth => 30 }
DESCRIPTION
Role::HasPayload::Merged provides a payload
method and a payload
attribute. It computes the result of the payload
method when it's called, first by gathering the values of attributes marked with Role::HasPayload::Meta::Attribute::Payload, then by merging in the contents of the payload
attribute (provided at construction).
If an entry in the constructor-provided payload already exists in the autogenerated payload, a warning is issued and the autogenerated value is used.
For a bit more on the autogenerated payload, see Role::HasPayload::Auto.
This role is especially useful when combined with Role::HasMessage::Errf.
AUTHOR
Ricardo Signes <rjbs@cpan.org>
COPYRIGHT AND LICENSE
This software is copyright (c) 2013 by Ricardo Signes.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.