$ -> $(document).on 'change', '#issue_customer_id', (evt) -> $.ajax 'update_vehicles', type: 'GET' dataType: 'script' data: { customer_id: $("#issue_customer_id option:selected").val() } error: (jqXHR, textStatus, errorThrown) -> console.log("AJAX Error: #{textStatus}") success: (data, textStatus, jqXHR) -> console.log("Dynamic country select OK!")