ruby 3 Visa_12345 null [] Vienna Prague 0 calling,failed,manipulating,done change change error change change http://gruppe.wst.univie.ac.at/~mangler/services/airline.php http://gruppe.wst.univie.ac.at/~mangler/services/hotel.php http://gruppe.wst.univie.ac.at/~mangler/services/approval.php :post data.from data.to data.persons data.airline = result.value('id') data.costs += result.value('costs').to_f status.update 1, 'Hotel' :post data.to data.hotels << result.value('id') data.costs += result.value('costs').to_f data.persons -= 1 :post data.costs