/**
* @return \yii\db\ActiveQuery
*/
public function getVoteOptions()
{
return $this->hasMany(VoteOption::className(), ['parent_id' => 'id'])->orderBy(['position' => SORT_ASC]);
}
/**
* @return \yii\db\ActiveQuery
*/
public function getParent()
{
return $this->hasOne(VoteOption::className(), ['id' => 'parent_id']);
}
/**
* @return \yii\db\ActiveQuery
*/
public function getOption()
{
return $this->hasOne(VoteOption::className(), ['id' => 'option_id']);
}