Question

$section =  $objectManager->find('OEC\Entity\Section', $sectionId );
$class   =  $objectManager->find('OEC\Entity\Classes', $section->getClassId() );
$cycle   =  $objectManager->find('OEC\Entity\Cycle', $class->getCycleId() );
$branch  =  $objectManager->find('OEC\Entity\Branch', $cycle->getBranchId() );
$sectionArr = $class->getClassName()." ".$section->getSectionName()." - ". $branch->getBranchName()." ".$cycle->getCycleName();

$objectManager->close();

我收到Call to a member function getCycleId() on null，但如果我在每个变量之后print_r($variable);exit;我得到一个结果直到结束，只有当我删除它时它才会给我错误。什么可以解决方案？

Answer 1

尝试使用以下内容进行调试：

$section =  $objectManager->find('OEC\Entity\Section', $sectionId );
$class   =  $objectManager->find('OEC\Entity\Classes', $section->getClassId() );

if ($class === null) {
    /* add debug info here*/ 
    var_dump('ID of class was '.$section->getClassId());
    var_dump('ID of section was '.$sectionId);

    var_dump((new \Exception())->getTraceAsString());

    die();
}

$cycle   =  $objectManager->find('OEC\Entity\Cycle', $class->getCycleId() );
$branch  =  $objectManager->find('OEC\Entity\Branch', $cycle->getBranchId() );
$sectionArr = $class->getClassName()." ".$section->getSectionName()." - ". $branch->getBranchName()." ".$cycle->getCycleName();

$objectManager->close();

就像我在评论中所说的那样，代码可能会多次运行。

在null ZF2 Doctrine ORM 2上调用成员函数

1 个答案: