MooseX::Has::Options - Succinct options for Moose
version 0.003
use Moose; use MooseX::Has::Options; has 'some_attribute' => ( qw(:ro :required), isa => 'Str', ... ); has 'another_attribute' => ( qw(:ro :lazy_build), isa => 'Str', ... );
This module provides a succinct syntax for declaring options for Moose attributes.
MooseX::Has::Params works by checking the arguments to has for strings that look like options, i.e. alphanumeric strings preceded by a colon, and replaces them with a hash whose keys are the names of the options (sans the colon) and the values are 1's. Thus,
MooseX::Has::Params
has
1
has 'some_attribute', ':required';
becomes:
has 'some_attribute', required => 1;
Options must come in the beginning of the argument list. MooseX::Has::Options will stop searching for options after the first alphanumeric string that does not start with a colon.
The default behaviour can be customised per attribute. For example, here is how ro, rw and bare work:
ro
rw
bare
has 'some_attribute', ':ro';
has 'some_attribute', is => 'ro';
See below for details.
MooseX::Has::Options allows you to expand specific 'shortcut' arguments to arbitrary values via the handler interface. A 'handler' is a module in the MooseX::Has::Options::Handler namespace that provides a handler function. The handler function should return a hash whose keys are shortcut names, and the values are hashrefs with the values that the respective shortcuts should be expanded to. In order to enable the shortcuts supplied by a given handler you need to add it in the import statement:
MooseX::Has::Options
handler
use MooseX::Has::Options qw(NativeTypes); has 'some_attribute', qw(:ro :hash), default => sub {{ foo => bar }};
The following handlers ship with the default distribution:
MooseX::Has::Options::Handler::Accessors (included by default when you import this module)
MooseX::Has::Options::Handler::NativeTypes
MooseX::Has::Options::Handler::NoInit
MooseX::Has::Options hijacks the has function imported by Moose and replaces it with one that understands the options syntax described above. This is not an optimal solution, but the current implementation of Moose::Meta::Attribute prevents this functionality from being provided as a meta trait.
Moose::Meta::Attribute
Previous versions of MooseX::Has::Params allowed you to specify during import the name of the function too hook into, like so:
use HTML::FormHandler::Moose; use MooseX::Has::Options qw(has_field); has_field 'name' => ( qw(:required), type => 'Text', );
This behaviour is deprecated as of version 0.003 as this syntax is now used for specifying handlers. If you need to hook into a different function see the implementation of MooseX::Has::Options::import() and MooseX::Has::Options::import_into().
MooseX::Has::Options::import()
MooseX::Has::Options::import_into()
MooseX::Has::Sugar
Peter Shangov <pshangov@yahoo.com>
This software is copyright (c) 2012 by Peter Shangov.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.
To install MooseX::Has::Options, copy and paste the appropriate command in to your terminal.
cpanm
cpanm MooseX::Has::Options
CPAN shell
perl -MCPAN -e shell install MooseX::Has::Options
For more information on module installation, please visit the detailed CPAN module installation guide.