Zend Framework 2-如何使用注釋為實體設置表單驗證規則？

Question

如何為電子郵件地址設置@Annotation \\ Validator以確保其唯一。

/**
 * @var string
 *
 * @ORM\Column(name="email", type="string", unique=true, length=255, nullable=false)
 * @Annotation\Type("Zend\Form\Element\Email")
 * @Annotation\Validator({"name":"EmailAddress", "options": {"unique":"true"}})
 * @Annotation\ErrorMessage("Invalid Email Address")
 * @Annotation\Attributes({"placeholder":"Your Email Address"})
 * @Annotation\Options({"label":"Your email address:"})
 */
public $email;

如果電子郵件格式錯誤或字符無效，它會驗證電子郵件並顯示錯誤消息，但是如果電子郵件重復，則會出現以下錯誤：

Doctrine\DBAL\DBALException

File:
doctrine/dbal/lib/Doctrine/DBAL/DBALException.php:91
Message:
An exception occurred while executing 'INSERT INTO subscriber (email, token, active) VALUES (?, ?, ?)' with params ["me@example.com", {}, 1]:

SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry 'me@example.com' for key 'email'

Answer 1

通過使用@uniqueConstraint，請參見此處：

http://docs.doctrine-project.org/en/2.0.x/reference/annotations-reference.html#annref-uniqueconstraint