要按驾驶距离对Doctrine进行排序,您可以使用自定义的排序方法来实现。以下是一个示例解决方案,其中使用了Doctrine ORM和PHP:
use Doctrine\ORM\Mapping as ORM;
/**
* @ORM\Entity
* @ORM\Table(name="cars")
*/
class Car
{
// ...
/**
* @ORM\Column(type="float")
*/
private $distance;
// ...
public function getDistance()
{
return $this->distance;
}
// ...
}
findBy
方法。use Doctrine\ORM\EntityRepository;
class CustomCarRepository extends EntityRepository
{
public function findBy(array $criteria, array $orderBy = null, $limit = null, $offset = null)
{
if ($orderBy === null) {
$orderBy = ['distance' => 'ASC'];
} else {
$orderBy['distance'] = 'ASC';
}
return parent::findBy($criteria, $orderBy, $limit, $offset);
}
}
@ORM\Entity(repositoryClass="CustomCarRepository")
注解来指定使用自定义存储库类。use Doctrine\ORM\Mapping as ORM;
/**
* @ORM\Entity(repositoryClass="CustomCarRepository")
* @ORM\Table(name="cars")
*/
class Car
{
// ...
}
现在,当您调用findBy
方法时,将按驾驶距离进行排序。例如:
$entityManager = // 获取您的实体管理器对象
$carRepository = $entityManager->getRepository(Car::class);
$cars = $carRepository->findBy(['manufacturer' => 'Ford']);
foreach ($cars as $car) {
echo $car->getDistance() . ' km';
}
这将按升序打印出Ford汽车的驾驶距离。