private function getLatestPeriod(GameMode $gameMode)
{
$o = PeriodMap::find()->andWhere(['in', 'rule_id', array_map(function ($a) {
return $a->id;
}, $gameMode->rules)])->orderBy('{{period_map}}.[[period]] DESC')->limit(1)->one();
return $o ? $o->period : 0;
}
/**
* @return \yii\db\ActiveQuery
*/
public function getPeriodMaps()
{
return $this->hasMany(PeriodMap::className(), ['map_id' => 'id']);
}