Section: User Contributed Perl Documentation (3pm)
MooseX::Getopt::Meta::Attribute - Optional meta attribute for custom option names
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',
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
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');
Changes the command-line flag to be this value, instead of the default,
which is the same as the attribute name.
Adds more aliases for this command-line flag, useful for short options
Bugs may be submitted through the RT
bug tracker <https://rt.cpan.org/Public/Dist/Display.html?Name=MooseX-Getopt
There is also a mailing list available for users of this distribution, at
There is also an irc channel available for users of this distribution, at
"#moose" on "irc.perl.org" <irc://irc.perl.org/#moose>.
Stevan Little <firstname.lastname@example.org
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.