package MooseX::UndefTolerant::Attribute;
use Moose::Role;
-around('initialize_instance_slot', sub{
+around('initialize_instance_slot', sub {
my $orig = shift;
my $self = shift;
- # If the parameter passed in was undef, quietly do nothing but return
- return unless defined($_->[2]);
+ my $ia = $self->init_arg;
- # If it was defined, call the real init slot method
+ # $_[2] is the hashref of options passed to the constructor. If our
+ # parameter passed in was undef, pop it off the args...
+ pop unless (defined $ia && defined($_[2]->{$ia}));
+
+ # Invoke the real init, as the above line cleared the unef
$self->$orig(@_)
});
1;
-=head1 NAME
+# ABSTRACT: Make your attribute(s) tolerant to undef intitialization
-MooseX::UndefTolerant::Attribute - Make your attribute tolerant to undef intitialization
+__END__
=head1 SYNOPSIS
Applying this trait to your attribute makes it's initialization tolerant of
of undef. If you specify the value of undef to any of the attributes they
-will not be initialized. Effectively behaving as if you had not provided a
-value at all.
-
-=head1 AUTHOR
-
-Cory G Watson, C<< <gphat at cpan.org> >>
-
-=head1 COPYRIGHT & LICENSE
-
-Copyright 2009 Cory G Watson.
-
-This program is free software; you can redistribute it and/or modify it
-under the terms of either: the GNU General Public License as published
-by the Free Software Foundation; or the Artistic License.
-
-See http://dev.perl.org/licenses/ for more information.
+will not be initialized (or will be set to the default, if applicable).
+Effectively behaving as if you had not provided a value at all.
=cut