gistfile1.rb

Offer
  .with_nokaut_category_id(10745)
  .and({
         "$or" => [
                   { "is_trash"=>false }, { "is_trash" => { "$exists" => false } }
                  ]
       },
       {
         "$or" => [
                   { "xml_category" => /ultrad.wi.kowe/ },
                   { "offer_properties" => { "$elemMatch" => { "title" => "ceneo_category", "value" => /ultrad.wi.kowe/ } } }
                  ]
       }
)