Symfony 从实体获取值

Question

是否可以从实体读取所有可用值？

EG

class Properties
{
    /**
     * @var integer
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @var string
     *
     * @ORM\Column(name="UserID", type="string", length=255)
     */
    private $userID;

    /**
     * @var string
     *
     * @ORM\Column(name="Sport", type="string", length=1)
     */
    private $sport;

.
.
.

这样我就能得到值的名称，例如:Id、UserID、Sport？

Answer 1

您可以通过 Doctrine 元数据信息读取您需要的信息，如下所示:

    $doctrine = $this->getContainer()->get("doctrine");
    $em = $doctrine->getManager();

    $className = "Acme\DemoBundle\Entity\Properties";

    $metadata = $em->getClassMetadata($className);

    $nameMetadata = $metadata->fieldMappings['sport'];

    echo $nameMetadata['type'];  //print "string"
    echo $nameMetadata['length']; // print "1"

    // OR query for all fields
    // Returns an array with all the identifier column names. 
    $metadata->getIdentifierColumnNames();

有关 API DOC 的更多信息

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