public function value($parent_field = false)
{
if ($parent_field) {
$value = (new Query())->select([[DB::expr('MAX(' . $this->_field . ')'), $this->_field]])->from($this->_model->get_table())->where($parent_field, '=', $this->_model->get($parent_field))->one();
if ($value) {
$value = $value[$this->_field] ?: 0;
}
} else {
$value = (new Query())->select([[DB::expr('MAX(' . $this->_field . ')'), $this->_field]])->from($this->_model->get_table())->one();
if ($value) {
$value = $value[$this->_field] ?: 0;
}
}
return $value + 1;
}
public function count()
{
$this->_type = Database::SELECT;
$db = \Mii::$app->db;
$old_select = $this->_select;
$old_order = $this->_order_by;
if ($this->_distinct) {
$this->select([[DB::expr('COUNT(DISTINCT ' . $db->quote_column($this->_select[0]) . ')'), 'count']]);
} else {
$this->select([DB::expr('COUNT(*) AS `count`')]);
}
$as_object = $this->_as_object;
$this->_as_object = null;
$this->_order_by = [];
$count = $this->execute()->column('count', 0);
$this->_select = $old_select;
$this->_order_by = $old_order;
$this->_as_object = $as_object;
return $count;
}
