around('_generate_slot_initializer', sub {
my $orig = shift;
my $self = shift;
- my $attr = $self->_attributes->[$_[0]]->init_arg;
- my $tolerant_code =
- qq# delete \$params->{'$attr'} unless # .
- qq# exists \$params->{'$attr'} && defined \$params->{'$attr'};\n#;
+ # note the key in the params may not match the attr name.
+ my $key_name = $self->_attributes->[$_[0]]->init_arg;
- return $tolerant_code . $self->$orig(@_);
+ # insert a line of code at the start of the initializer,
+ # clearing the param if it's undefined.
+
+ if (defined $key_name) {
+ my $tolerant_code =
+ qq# delete \$params->{'$key_name'} unless # .
+ qq# exists \$params->{'$key_name'} && defined \$params->{'$key_name'};\n#;
+
+ return $tolerant_code . $self->$orig(@_);
+ }
+ else {
+ return $self->$orig(@_);
+ }
});
no Moose::Role;