/**
* Filter the query by a related City object
*
* @param City|PropelObjectCollection $city the related object to use as filter
* @param string $comparison Operator to use for the column comparison, defaults to Criteria::EQUAL
*
* @return StateQuery The current query, for fluid interface
* @throws PropelException - if the provided filter is invalid.
*/
public function filterByCity($city, $comparison = null)
{
if ($city instanceof City) {
return $this->addUsingAlias(StatePeer::ID, $city->getStateId(), $comparison);
} elseif ($city instanceof PropelObjectCollection) {
return $this->useCityQuery()->filterByPrimaryKeys($city->getPrimaryKeys())->endUse();
} else {
throw new PropelException('filterByCity() only accepts arguments of type City or PropelCollection');
}
}
