symfony - 构建动态 Doctrine 查询

Question

我正在尝试为我的数据库构建过滤器。基于几个表单输入的值，我需要构造适当的查询。这是代码：

    $qb = $em->createQueryBuilder();
            $qb->select('c.title')
            ->from('Baza\BlogBundle\Entity\Conferences', 'c');         
    $conditions=array(
        $qb->expr()->gt('c.title',$enquiry->getNaziv()) );//First condition 

    if ($enquiry->getKontakt()!=null) {
         $conditions[] = $qb->expr()->lt('c.contactemail',$enquiry->getKontakt())}//Adding second, optional condition

    $conditions = call_user_func_array(array($qb, 'andX'), $conditions);
    $qb->where($conditions);
    $query = $qb->getQuery();

当我运行它时，我得到以下异常：

警告：call_user_func_array() 期望参数 1 是一个有效的回调，类 'Doctrine\ORM\QueryBuilder' 没有方法 'andX'

*编辑 call_user_func_array() 修改后，我收到以下错误：

QueryException: SELECT c.title FROM Baza\BlogBundle\Entity\Conferences c WHERE c.title > ITRO AND c.contactemail < somemail@yahoo.com

显然，查询的格式不正确。我在关注这篇文章：Doctrine DQL 条件查询

有什么想法吗？

score 2 · Accepted Answer

我使用以下代码构建了动态查询：

$em = $this->getDoctrine()->getEntityManager();

            $naziv = $enquiry->getNaziv();
            $drzava=$enquiry->getDrzava();
            $oblast=$enquiry->getOblast();
            $grad=$enquiry->getGrad();
            $provincija=$enquiry->getProvincija();
            $kontakt=$enquiry->getKontakt();
            $sajt=$enquiry->getSajt();

            $testquery = "SELECT c.title FROM Baza\BlogBundle\Entity\Conferences c JOIN c.topicid t JOIN c.locationid l JOIN l.stateid s WHERE c.lh = :lh";
            $testparam ['lh'] = $lh;

            if ($kontakt != '') {
                    $testquery .= " and c.contactemail = :kontakt";
                    $testparam['kontakt'] = $kontakt;
            }
            if ($drzava != '') {
                    $testquery .= " and s.name = :drzava";
                    $testparam['drzava'] = $drzava;
            }

            if ($provincija != '') {
                    $testquery .= " and l.province = :provincija";
                    $testparam['provincija'] = $provincija;
            }

             if ($grad != '') {
                    $testquery .= " and l.city = :grad";
                    $testparam['grad'] = $grad;
            }

             if ($sajt != '') {
                    $testquery .= " and c.siteurl = :sajt";
                    $testparam['sajt'] = $sajt;
            }

             if ($oblast != '') {
                    $testquery .= " and t.name = :oblast";
                    $testparam['oblast'] = $oblast;
            }

            $query = $em->createQuery($testquery)->setParameters($testparam);
            $result = $query->getResult();

score 0 · Accepted Answer

andx 都是小写
andx 是 expr() 的函数，而不是查询生成器的函数：

$conditions = call_user_func_array(array($qb->expr(), 'andx'), $conditions);

score 0 · Accepted Answer

关于您的编辑：

$qb = $em->createQueryBuilder();
            $qb->select('c')
            ->from('Baza\BlogBundle\Entity\Conferences', 'c');

使用学说（作为 ORM）选择整个对象。您仍然可以在字段上使用 where 子句。此外 gt 和 lt 搜索字符串并不是真正正确的 sql 实践。如果字母大小写不正确，它们可能会产生奇怪的结果。

score 0 · Accepted Answer

多年后，这就是我的做法：

    if (array_key_exists('phone', $filters)) {
        $qb->andWhere('p.phone LIKE :phone')
        ->setParameter(':phone', '%' . $filters['phone'] . '%');
    }

希望这对某人有帮助

symfony - 构建动态 Doctrine 查询

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