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