public function executeMiniChart($request)
 {
     $interval = ReportPeer::getMeasurementInterval($this->report->getId());
     $x_labels = array($interval['first'], $interval['last']);
     $decorator = new ThumbnailChartDecorator($x_labels);
     $this->chart = ReportPeer::getReportChartt($this->report, $decorator);
 }