/** * Filter the query by a related DocumentType object * * @param DocumentType|PropelObjectCollection $documentType The related object(s) to use as filter * @param string $comparison Operator to use for the column comparison, defaults to Criteria::EQUAL * * @return DocumentQuery The current query, for fluid interface * @throws PropelException - if the provided filter is invalid. */ public function filterByDocumentType($documentType, $comparison = null) { if ($documentType instanceof DocumentType) { return $this->addUsingAlias(DocumentPeer::DOCUMENT_TYPE_ID, $documentType->getId(), $comparison); } elseif ($documentType instanceof PropelObjectCollection) { if (null === $comparison) { $comparison = Criteria::IN; } return $this->addUsingAlias(DocumentPeer::DOCUMENT_TYPE_ID, $documentType->toKeyValue('PrimaryKey', 'Id'), $comparison); } else { throw new PropelException('filterByDocumentType() only accepts arguments of type DocumentType or PropelCollection'); } }