在doctrine 2中获取自定义字段

Question

我有一个实体如下:

private $username;
private $password;
private $createdAt; //datetime

我想在doctrine中运行查询以获取具有现有字段和另一个字段的实体(在这种情况下,列显示createdAt和当前日期时间的差异,以分钟为单位.在sql中,我将运行如下查询:

 select username, password, createdAt,TIMESTAMPDIFF(MINUTE , created_at, NOW()) AS minutes from users

在学说中我获取了如下实体:

 $user = $em->getRepository('TestBundle:Users');

如何从学说中获取自定义字段分钟？

Answer 1

你应该检查ResultSetMapping:

并检查如何添加标量结果

$rsm = new ResultSetMapping;
$rsm->addEntityResult('Users', 'u');
$rsm->addFieldResult('u', 'id', 'id');
$rsm->addFieldResult('u', 'password', 'password');
$rsm->addScalarResult('minutes', 'minutes');

$query = $this->_em->createNativeQuery('select username, password, TIMESTAMPDIFF(MINUTE , created_at, NOW()) AS minutes', $rsm);

$users = $query->getResult();