Filtering DBIx::Class resultsets with external criteria

[Ovid]

Using DBIx::Class and I have a resultset which needs to be filtered by data which cannot be generated by SQL. What I need to do is something effectively equivalent to this hypothetical example:

    my $resultset     = $schema->resultset('Service')->search(\%search
+);
    my $new_resultset = $resultset->filter( sub {
        my $web_service = shift;
        return $web_service->is_available;
    } );

Reading through the docs gives me no clue how to accomplish a strategy like this.

[arc_of_descent]

Can't you just do something like this:

my $resultset = grep { WS->new($_->id)->is_available; } 
    $schema->resultset('Service')->search(\%search);

update
Not sure of how $web_service is linked to your app. I guess I'm trying to say that I utilize grep for simple filters.