---
name: "MooseX::Getopt::Meta::Attribute"
section: "3pm"
platform: "linux"
package: "libmoosex-getopt-perl"
version: "0.78-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/MooseX::Getopt::Meta::Attribute"
---

# MooseX::Getopt::Meta::Attribute(3pm)

Optional meta attribute for custom option names

## NAME

MooseX::Getopt::Meta::Attribute - Optional meta attribute for custom option names

## VERSION

version 0.78

## SYNOPSIS

```
  package App;
  use Moose;
  with 'MooseX::Getopt';
  has 'data' => (
      metaclass => 'Getopt',
      is        => 'ro',
      isa       => 'Str',
      default   => 'file.dat',
      # tells MooseX::Getopt to use --somedata as the
      # command line flag instead of the normal
      # autogenerated one (--data)
      cmd_flag  => 'somedata',
      # tells MooseX::Getopt to also allow --moosedata,
      # -m, and -d as aliases for this same option on
      # the commandline.
      cmd_aliases => [qw/ moosedata m d /],
      # Or, you can use a plain scalar for a single alias:
      cmd_aliases => 'm',
  );
```

## DESCRIPTION

This is a custom attribute metaclass which can be used to specify a the specific command line flag to use instead of the default one which MooseX::Getopt will create for you.

This is certainly not the prettiest way to go about this, but for now it works for those who might need such a feature.

### Use 'traits' instead of 'metaclass'

You should rarely need to explicitly set the attribute metaclass. It is much preferred to simply provide a trait (a role applied to the attribute metaclass), which allows other code to further modify the attribute by applying additional roles.

Therefore, you should first try to do this:

```
  has 'foo' => (traits => ['Getopt'], cmd_flag => 'f');
```

### Custom Metaclass alias

This now takes advantage of the Moose 0.19 feature to support custom attribute metaclass aliases. This means you can also use this as the **Getopt** alias, like so:

```
  has 'foo' => (metaclass => 'Getopt', cmd_flag => 'f');
```

## METHODS

### cmd\_flag

Changes the command-line flag to be this value, instead of the default, which is the same as the attribute name.

### cmd\_aliases

Adds more aliases for this command-line flag, useful for short options and such.

### has\_cmd\_flag

### has\_cmd\_aliases

## SUPPORT

Bugs may be submitted through the RT bug tracker \<https://rt.cpan.org/Public/Dist/Display.html?Name=MooseX-Getopt\> (or bug-MooseX-Getopt@rt.cpan.org \<mailto:bug-MooseX-Getopt@rt.cpan.org\>).

There is also a mailing list available for users of this distribution, at \<http://lists.perl.org/list/moose.html\>.

There is also an irc channel available for users of this distribution, at `"#moose"` on `"irc.perl.org"` \<irc://irc.perl.org/#moose\>.

## AUTHOR

Stevan Little \<stevan@iinteractive.com\>

## COPYRIGHT AND LICENSE

This software is copyright (c) 2007 by Infinity Interactive, Inc.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.