private function newMeasurement()
 {
     $measurement = null;
     if ($_SERVER['REQUEST_METHOD'] == 'POST') {
         $measurement = new Measurement($_POST);
     }
     $_SESSION['measurement'] = $measurement;
     if (is_null($measurement) || $measurement->getErrorCount() != 0) {
         MeasurementView::showNew();
     } else {
         $newMeasurement = MeasurementsDB::addMeasurement($measurement);
         if ($newMeasurement->getErrorCount() == 0) {
             $_SESSION['measurement'] = $newMeasurement;
         }
         SensorView::show();
         header('Location: /' . $_SESSION['base'] . '/sensor/show/' . $_SESSION['sensor']->getSensorId());
     }
 }
 private function newMeasurement()
 {
     MeasurementView::showNew();
 }