mysql - Symfony 查询生成器使用子查询进行更新

Question

我尝试了以下内容:

 $subQuery = $this->createQueryBuilder('teachingEvent')->select('teachingEvent.id')
        ->leftJoin('teachingEvent.timeTableEntry', 'timeTableEntry')
        ->leftJoin('timeTableEntry.course', 'course')
        ->where('course.school = :school' )
        ->andWhere('teachingEvent.date >= :fromDate')
        ->andWhere('teachingEvent.date <= :toDate')
        ->setParameters(array(':fromDate' => $from, ':toDate' => $to, ':school' => $school))
        ->getDQL();


    $query = $this->createQueryBuilder('teachingEvent')
        ->update()
        ->set('teachingEvent.schoolFreeDate', ':schoolFreeDate')
        ->where('teachingEvent.id IN ' . $subQuery)
        ->getQuery();

    return $query->getResult();

当我转储子查询时，我得到:

"SELECT teachingEvent.id FROM AppBundle\Entity\TeachingEvent teachingEvent LEFT JOIN teachingEvent.timeTableEntry timeTableEntry LEFT JOIN timeTableEntry.course course WHERE course.school = :school AND teachingEvent.date >= :fromDate AND teachingEvent.date <= :toDate

对我来说，似乎现在应该可以工作 - 但我收到以下错误消息

[Syntax Error] line 0, col 136: Error: Expected Literal, got 'teachingEvent'

如何找到错误？

Answer 1

您也可以通过首先从第一个查询生成器获取对象，然后执行所需的更新来执行相同的操作

$teachingEvents =  $this->createQueryBuilder('teachingEvent')
                        ->select('teachingEvent')
                        ->leftJoin('teachingEvent.timeTableEntry', 'timeTableEntry')
                        ->leftJoin('timeTableEntry.course', 'course')
                        ->where('course.school = :school' )
                        ->andWhere('teachingEvent.date >= :fromDate')
                        ->andWhere('teachingEvent.date <= :toDate')
                        ->setParameters(array(':fromDate' => $from, ':toDate' => $to, ':school' => $school))
                        ->getQuery()
                        ->getResult();

foreach($teachingEvents as $teachingEvent){
    $teachingEvents->setSchoolFreeDate($someDate);
    $em->persist($teachingEvents);
    /* $em->flush(); flush here or after loop */
}

$em->flush();