[CDBI] has_a and null foreign keys

Hi,

I have 2 tables that are related to each other through has_a relationship in
Class::DBI. However, it can happen that a record in table1 does not have the
foreign key  for table2 populated. In this situation, if I try to call
My::Class->retrieve(id => $id)->foreign_key->column_in_table2(), I get an
error because foreign_key() didn't return a valid object and
column_in_table2() fails. Should I be trying to check whether
->foreign_key() returns a valid object and only then call column_in_table2()
or is there another way? Thanks


Arsh

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