function getDataGridFilter($handler)
{
$filter = array();
$i = 0;
//Filter filter parameters to valid enties
while (isset($_REQUEST["fk{$i}"]) && isset($_REQUEST["fo{$i}"]) && isset($_REQUEST["fv{$i}"])) {
if ($handler->hasField(unescaped($_REQUEST, "fk{$i}"))) {
$filter[$i]['key'] = unescaped($_REQUEST, "fk{$i}");
if (isLegalOperator(unescaped($_REQUEST, "fo{$i}"))) {
$filter[$i]['op'] = unescaped($_REQUEST, "fo{$i}");
try {
$filter[$i]['val'] = transferType($handler->getFieldType(unescaped($_REQUEST, "fk{$i}")), unescaped($_REQUEST, "fv{$i}"));
} catch (TransferException $ex) {
//Untransferable Data Type
echo 'Illegal filter value: ' . $_REQUEST["fv{$i}"];
exit;
}
} else {
//illegal filter operator
echo 'Illegal filter operator: ' . $_REQUEST["fo{$i}"];
exit;
}
} else {
//unknown filter key
echo 'Unknown filter key: ' . $_REQUEST["fk{$i}"];
exit;
}
$i++;
}
return $filter;
}
}
} else {
//unset order key, do not process further
break;
}
}
$filter = array();
$i = 0;
//Filter filter parameters to valid enties
while (isset($_GET["fk{$i}"]) && isset($_GET["fo{$i}"]) && isset($_GET["fv{$i}"])) {
if ($handler->hasField(unescaped($_GET, "fk{$i}"))) {
$filter[$i]['key'] = unescaped($_GET, "fk{$i}");
if (isLegalOperator(unescaped($_GET, "fo{$i}"))) {
$filter[$i]['op'] = unescaped($_GET, "fo{$i}");
try {
$filter[$i]['val'] = transferType($handler->getFieldType(unescaped($_GET, "fk{$i}")), unescaped($_GET, "fv{$i}"));
} catch (TransferException $ex) {
//Untransferable Data Type
echo 'Illegal filter value: ' . $_GET["fv{$i}"];
exit;
}
} else {
//illegal filter operator
echo 'Illegal filter operator: ' . $_GET["fo{$i}"];
exit;
}
} else {
//unknown filter key
echo 'Unknown filter key: ' . $_GET["fk{$i}"];
exit;
}