/** * @return \yii\db\ActiveQuery */ public function getTariffGroups() { return $this->hasMany(TariffGroup::className(), ['parent_id' => 'id']); }
/** * @return \yii\db\ActiveQuery */ public function getTariffGroup() { return $this->hasOne(TariffGroup::className(), ['id' => 'tariff_group_id']); }