/**
* @return Chart
*/
public static function getChart($cate)
{
/** @var Chart $chart */
$chart = new Chart();
$db = DB::getConn();
$stm = $db->prepare('select uid, cate, ans from Answers where cate=:cate');
$stm->bindParam(':cate', $cate);
$stm->execute();
$rs = $stm->fetchAll();
$legends = [];
foreach ($rs as $r) {
$results = QuestionCtrl::getResByID($r['uid'], $r['cate']);
$mark = 0;
$total = 0;
foreach ($results as $result) {
$total += $result->getPoint();
$mark += $result->getMark();
}
if ($total != 0) {
$legends[] = number_format($mark * 100 / $total, 1, '.', ',');
}
}
$chart->setLegends($legends);
return $chart;
}
