Can you explain why you're wanting to do this? Why not just use the instance of the child object directly, and leave the parent as-is, as a parent class object? Or if you want to use the child object through the parent, stuff a copy of the object into the parent and use it from there?

It seems as though re-blessing the object may lead to potential confusion down the road, and may break things if someone tries to generate another object from the parent, instead of using the class:

# this may break/do something unexpected if $self is
# re-blessed

my $obj = $self->new(%params);

# worse, the wordpress child probably doesn't have a wordpress_new()
# method, as it has no need to. The parent probably calls new() on the
# child through a wordpress-type instantiator

my $obj = $self->wordpress_new();

[download]

Confusion?

my $parent = Foo::Bar->new;

# after rebless, calling a documented method in the parent
# class may cause major confusion (or worse, subtle breakage far away)
# if the child has the same method overridden, and does something 
# totally different

$parent->documented_method(); # got foo and not bar!?

[download]

In reply to Re^2: Converting Moose object to a subclass of itself by stevieb
in thread Converting Moose object to a subclass of itself by nysus

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