我有以下代码:
/**
* Search similar category given a string
*
* @param $searchTerm search similar category
*/
public function findOneSimilarCategory($searchTerm)
{
$query = $this->createQueryBuilder('secondLevelCategory')
->select('secondLevelCategory')
->where('secondLevelCategory.categoryTitle LIKE :searchTerm')
->setParameter('searchTerm', $searchTerm)
->getQuery();
$query->useResultCache(true, self::CACHE_RESULT_LIFETIME, md5(__METHOD__ . serialize('category-search-' . $query->getParameters())));
$query->useQueryCache(true);
return $query->getSingleResult();
}
然而这给了我一个错误:
“PHP message: PHP Fatal error: Uncaught exception 'Doctrine\ORM\NoResultException' with message 'No result was found for query although at least one row was expected.' in /var/www/Shopious/vendor/doctrine/orm/lib/Doctrine/ORM/AbstractQuery.php:649
答案 0 :(得分:51)
您收到此错误是因为您使用的是getSingleResult()
方法。如果它甚至找不到单个结果,它会生成异常。如果查询中没有任何结果,您可以使用getOneOrNullResult()
来获取NULL。
查询#getSingleResult() :检索单个对象。如果结果包含多个对象,则抛出NonUniqueResultException。如果结果不包含任何对象,则抛出NoResultException。纯/混合区别不适用。