Question

Right now I wrote

Tire.search INDEX_NAME do
  query do
    filtered do
      query { string term }
      filter :or, { missing: { field: :app_id } },
                  { terms: { app_id: app_ids } }
    end
  end
end.results.to_a

Answer 1

Well returning items that either have no app_id or one that matches your terms sounds like a job for an or filter – I’d try

filter :or, [
    {:not => {:exists => {:field => :app_id}}},
    {:terms => {:app_id => app_ids}}
  ]