Re: Callback methods in a Moose object

Jesse Luehrs wrote:
> On Mon, Jan 09, 2012 at 05:42:39PM -0800, Toby Betts wrote:
> > The issue seems to be that the arguments to be given to the callback are
> > missing. Based on the XML::Twig docs, handlers are passed a self-referencing
> > object called a twig and the element to handle, like so:
> 
> Yes, this is the issue. If you're wrapping a method call in a coderef
> like that, you need to pass through the arguments yourself - the form
> "sub { $self->method }" is only correct when the callback doesn't take
> arguments. What you really want is "sub { $self->method(@_) }".

Thanks. With this input, I've found that including a CodeRef wrapper isn't
necessary. This code appears to work as desired:

  my $parser = XML::Twig->new(
    twig_roots => {
      'title'       => sub { $self->title_handler(@_) },
      'description' => sub { $self->description_handler(@_) },
      'item'        => sub { $self->item_handler(@_) },
    },
  );


Toby