Re: Run code on object creation after new() and bless?

Tod,

You want the BUILD method, it is documented (kind of) in  
Moose::Object under the BUILDALL method. You can also find an example  
of exactly what you are trying to do in Recipe 4 of the cookbook  
(http://search.cpan.org/~stevan/Moose-0.40/lib/Moose/Cookbook/ 
Recipe4.pod). The Company and Employee classes have a bi-directional  
relation. You may also want to look into the weak_ref => 1 option as  
well so that you don't end up with circular refs.

- Stevan

On Apr 3, 2008, at 9:14 PM, Tod Hagan wrote:
> Hi all,
>
> I've got a container object with a hashref of other objects. Given one
> of the contained objects, the code is going to need to be able to  
> get a
> reference to the container without a brute force search of all
> containers.
>
> The hashref is 'ro' and passed to new as the data structure is  
> fixed and
> not subject to change after creation.
>
> One way to create the backreferences is with a method to be called  
> after
> new returns, but this is subject to bugs if the method call is omitted
> after creating a container. This ends up looking much like a dynamic
> container which starts empty to which items are added via an add  
> method.
>
> I tried creating a base class and extending it using a method modifier
> on 'new', but the problem is that it gets control before the object  
> has
> been blessed and thus there's no reference.
>
> Is there a way to run code following object creation and the  
> blessing of
> the object? Or should I give up trying to hide the extra method  
> call and
> require calling a method following the creation of the object?
>
> Thanks.
>
> Tod
>
> -- 
> Tod Hagan
> Information Technologist
> AIRMAP/Climate Change Research Center
> Institute for the Study of Earth, Oceans, and Space
> University of New Hampshire
> Durham, NH 03824
> Phone: 603-862-3116
>
>