public function has_activities($parents_id, $column_name1, $comparison1, $value1, $delimiter = '', $column_name2 = '', $comparison2 = '', $value2 = '')
{
$database = $_SESSION['database'];
$tariffs_listing = '';
if (tep_not_null($parents_id)) {
$tariffs_query = $database->query("select tariffs_id from " . TABLE_TARIFFS . " where employees_roles_id in (" . $parents_id . ")");
while ($tariffs_result = $database->fetch_array($tariffs_query)) {
if (tep_not_null($tariffs_listing)) {
$tariffs_listing .= ',';
}
$tariffs_listing .= '' . $tariffs_result['tariffs_id'];
}
} else {
$tariffs_listing = $this->id;
}
$activity = new activity();
return $activity->get_activities($tariffs_listing, $column_name1, $comparison1, $value1, $delimiter, $column_name2, $comparison2, $value2);
}
