Symfony ManyToOne关系getter返回空对象

Question

我将简化我的代码,我接下来会:

医生实体:

    use ...\...\Entity\Paciente;

    class Doctor extends Usuario {

        public function __construct() {
            ...
            $this->pacientes = new ArrayCollection();
            ...

        }


        /**
         * Número de colegiado - numColegiado
         * 
         * @var string
         *
         * @ORM\Column(name="numColegiado", type="string", length=255, unique=true)
         */
        protected $numColegiado;


        /**
         * @ORM\OneToMany(targetEntity="Paciente", mappedBy="doctor")
         * @var \Doctrine\Common\Collections\ArrayCollection
         */
        private $pacientes;

       ...

    }

Paciente实体:

use \...\...\Entity\Doctor;

...

class Paciente extends Usuario {

    }

    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;


    /**
     * @ORM\ManyToOne(targetEntity="Doctor", inversedBy="pacientes")
     * @ORM\JoinColumn(name="doctorNum", referencedColumnName="numColegiado", nullable=TRUE)
     * 
     * @var type 
     */
    protected $doctor;

    ...

    /**
     * Set doctor
     *
     * @param Doctor $doctor
     * @return Paciente
     */
    public function setDoctor(Doctor $doctor = null)
    {
        $this->doctor = $doctor;

        return $this;
    }

    /**
     * Get doctor
     *
     * @return Doctor 
     */
    public function getDoctor()
    {
        return $this->doctor;
    }
}

好吧,问题是,当我执行该代码时(当然创建了一个关系并且该对象存在于数据库中):

\Doctrine\Common\Util\Debug::dump($paciente->getDoctor());

它打印如下:

object(stdClass)#804 (28) { ["__CLASS__"]=> string(34) "Knoid\CorcheckBundle\Entity\Doctor" ["__IS_PROXY__"]=> bool(true) ["__PROXY_INITIALIZED__"]=> bool(false) ["id"]=> NULL ["numColegiado"]=> NULL ["pacientes"]=> NULL ["nombre"]=> NULL ["apellidos"]=> NULL ["dni"]=> NULL ["tipo"]=> NULL ["username"]=> NULL ["usernameCanonical"]=> NULL ["email"]=> NULL ["emailCanonical"]=> NULL ["enabled"]=> NULL ["salt"]=> NULL ["password"]=> NULL ["plainPassword"]=> NULL ["lastLogin"]=> NULL ["confirmationToken"]=> NULL ["passwordRequestedAt"]=> NULL ["groups"]=> NULL ["locked"]=> NULL ["expired"]=> NULL ["expiresAt"]=> NULL ["roles"]=> NULL ["credentialsExpired"]=> NULL ["credentialsExpireAt"]=> NULL }

正如您所看到的,"doctor"对象的所有属性都为null,对象存在但它是空的,在我的DB中,此对象存在且不为空.

知道发生了什么事吗？

Answer 1

这是因为代理对象尚未初始化。初始化它的一种方法是查询对象，例如$doctor->getId()。如果您之后转储该对象，您将看到所有属性都是“可见的”