/**
* Sorts the DataTable rows using the supplied callback function.
*
* @param string $functionCallback A comparison callback compatible with {@link usort}.
* @param string $columnSortedBy The column name `$functionCallback` sorts by. This is stored
* so we can determine how the DataTable was sorted in the future.
*/
private function sort(DataTable $table, $functionCallback)
{
$table->setTableSortedBy($this->columnToSort);
$rows = $table->getRowsWithoutSummaryRow();
// get column value and label only once for performance tweak
$values = array();
if ($functionCallback === 'numberSort') {
foreach ($rows as $key => $row) {
$values[$key] = array($this->getColumnValue($row), $row->getColumn('label'));
}
} else {
foreach ($rows as $key => $row) {
$values[$key] = $this->getColumnValue($row);
}
}
uasort($values, array($this, $functionCallback));
$sortedRows = array();
foreach ($values as $key => $value) {
$sortedRows[] = $rows[$key];
}
$table->setRows($sortedRows);
unset($rows);
unset($sortedRows);
if ($table->isSortRecursiveEnabled()) {
foreach ($table->getRowsWithoutSummaryRow() as $row) {
$subTable = $row->getSubtable();
if ($subTable) {
$subTable->enableRecursiveSort();
$this->sort($subTable, $functionCallback);
}
}
}
}
