NAME¶
MooseX::App::Plugin::Depends - Adds dependent options
SYNOPSIS¶
In your base class:
package MyApp;
use MooseX::App qw(Depends);
use Moose::Util::TypeConstraints;
option 'FileFormat' => (
is => 'ro',
isa => enum( [qw(tsv csv xml)] ),
);
option 'WriteToFile' => (
is => 'ro',
isa => 'Bool',
depends => [qw(FileFormat)],
);
In your script:
#!/usr/bin/env perl
use strict;
use warnings;
use MyApp;
MyApp->new_with_options( WriteToFile => 1 );
# generates Error
# Option 'WriteToFile' requires 'FileFormat' to be defined
MyApp->new_with_options( WriteToFile => 1, FileFormat => 'tsv );
# generates no errors
MyApp->new_with_options();
# generates no errors
DESCRIPTION¶
In many real-world scenarios, sets of options are, by design, needed to be
specified together. This plugin adds the ability to create dependent options
to your application, options that require one or more other options for your
application to perform properly.
