/**
* Filter the query by a related \Tag object
*
* @param \Tag|ObjectCollection $tag the related object to use as filter
* @param string $comparison Operator to use for the column comparison, defaults to Criteria::EQUAL
*
* @return ChildKeywordQuery The current query, for fluid interface
*/
public function filterByTag($tag, $comparison = null)
{
if ($tag instanceof \Tag) {
return $this->addUsingAlias(KeywordTableMap::COL_ID, $tag->getKeywordId(), $comparison);
} elseif ($tag instanceof ObjectCollection) {
return $this->useTagQuery()->filterByPrimaryKeys($tag->getPrimaryKeys())->endUse();
} else {
throw new PropelException('filterByTag() only accepts arguments of type \\Tag or Collection');
}
}
