Can't you just do something like this: 
my $resultset = grep { WS->new($_->id)->is_available; } 
    $schema->resultset('Service')->search(\%search);

[download]
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.

--
Rohan

In reply to Re: Filtering DBIx::Class resultsets with external criteria by arc_of_descent
in thread Filtering DBIx::Class resultsets with external criteria by Ovid

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