Unless Table is within the same lexical scope as IDObject this won't work. If you're blessing a hashref as your object then you can just save the database handle there e.g

# bare bones example
sub new {
   my $class = shift;
   bless {
     dbh => $class->get_db(@_)
   }, $class;
}
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So when Table inherits from IDObject it will use the same constructor and set the database handle.
HTH

_________
broquaint