my ($pri, $too_many) = $class->primary_columns;
$class->throw_exception( "might_have/has_one can only infer join for a single primary key; ${class} has more" )
if $too_many;
- my $f_key;
my $f_class_loaded = eval { $f_class->columns };
- my $guess;
+ my ($f_key,$guess);
if (defined $cond && length $cond) {
$f_key = $cond;
$guess = "caller specified foreign key '$f_key'";