Not quite sure what you're asking. Are you looking for a way to change the default for an attribute in a subclass?

package ClassB;
use Moose;
extends 'ClassA';

has '+param2' => (default => 'PARAM2-CLASSB');

around FOREIGNBUILDARGS => sub {
    my $orig = shift;
    my $class = shift;
    return $class->$orig(param1=>'PARAM1-CLASSB',@_);
};

[download]

Or better yet, use builders instead of defaults:

package ClassA;
use Moose;
use MooseX::NonMoose;
extends 'aNonMooseClass';

has 'param2' => ( isa=>'Str', builder => '_build_param2');

sub FOREIGNBUILDARGS {
    my $class  = shift;
    my %args   = @_;
    my $param1 = exists $args{param1} ? $args{param1} : $class->_build
+_param1;

    return ( $param1 );
}

sub _build_param1 {
    return 'Default param1 in class A';
}

sub _build_param2 {
    return 'Default param2 in class A';
}


package ClassB;
use Moose;
extends 'ClassA';

sub _build_param1 {
    return 'PARAM1-CLASSB';
}

sub _build_param2 {
    return 'PARAM2-CLASSB';
}

[download]
use Moops; class Cow :rw { has name => (default => 'Ermintrude') }; say Cow->new->name

In reply to Re: NonMoose and (clean) inheritance by tobyink
in thread NonMoose and (clean) inheritance by eco

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