/** * Filter the query by a related \Models\Category object * * @param \Models\Category|ObjectCollection $category The related object(s) to use as filter * @param string $comparison Operator to use for the column comparison, defaults to Criteria::EQUAL * * @throws \Propel\Runtime\Exception\PropelException * * @return ChildArticleQuery The current query, for fluid interface */ public function filterByCategory($category, $comparison = null) { if ($category instanceof \Models\Category) { return $this->addUsingAlias(ArticleTableMap::COL_ID_CATEGORY, $category->getId(), $comparison); } elseif ($category instanceof ObjectCollection) { if (null === $comparison) { $comparison = Criteria::IN; } return $this->addUsingAlias(ArticleTableMap::COL_ID_CATEGORY, $category->toKeyValue('PrimaryKey', 'Id'), $comparison); } else { throw new PropelException('filterByCategory() only accepts arguments of type \\Models\\Category or Collection'); } }