Please add similar function as below.
public function getAllColumnsAsArray()
{
$result = [];
foreach ($this->columns as $k => $v) {
if (!empty($v[1])) {
$result[] = $v[1];
} else {
$result[] = $v[0]->getMembers()[0];
}
}
return $result;
}
This should return:
Array
(
[0] => ID
[1] => Code
[2] => Name
[3] => Parent
)
Please add similar function as below.
This should return:
Array
(
[0] => ID
[1] => Code
[2] => Name
[3] => Parent
)