Re: Class Methods in Moose?

Ovid,

Moose does not have built in support for class methods (the rationale  
for this is almost certainly not interesting to you at the moment :)  
(see my class-methods rant on p6-language from a few years ago, that  
about sums it up)), you simply use the techniques you have always  
used, like Class::Data::Inheritable or package level variables and  
methods to access them.

I suspect that you might find MooseX::ClassAttribute useful, it is  
class-level attributes (which then means class-level accessors too)  
and sounds like it would do what you need.

- Stevan

On Oct 22, 2008, at 11:16 AM, Ovid wrote:

> I'm working on a legacy system with a database which has some  
> issues.  Right now, I need to populate a Moose enum with allowable  
> enum values from a database.  The problem is that the Moose objects  
> don't know about the database when they're used (or even when  
> they're instantiated), thus making it impossible to populate those  
> enums.
>
> Until we have time to fix this bug, I need a work around.  It seems  
> to me that if I had access to class data in Moose, I could have  
> something like this (by the time this is called, we're guaranteed to  
> have database access):
>
>  sub authorities {
>      my ( $self, $schema ) = @_;
>
>      unless ( $self->_authorities ) { # class data
>          $self->_authories(
>              # get enum values from the database
>          );
>      }
>      return $self->_authories;
>  }
>
> This is a really nasty hack, but we simply don't have time to fix  
> this issue prior to our next release.  However, I can't figure out  
> how to declare a method as a class method short of using  
> Class::Data::Inheritable.  Is there a better way of handling this?
>
> Cheers,
> Ovid
> --
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