Zend Framework 2 - 如何使用注释为实体设置表单验证规则

Question

如何为电子邮件地址设置@Annotation\Validator以确保它是唯一的。

/**
 * @var string
 *
 * @ORMColumn(name="email", type="string", unique=true, length=255, nullable=false)
 * @AnnotationType("ZendFormElementEmail")
 * @AnnotationValidator({"name":"EmailAddress", "options": {"unique":"true"}})
 * @AnnotationErrorMessage("Invalid Email Address")
 * @AnnotationAttributes({"placeholder":"Your Email Address"})
 * @AnnotationOptions({"label":"Your email address:"})
 */
public $email;

它确实会验证电子邮件，如果电子邮件格式错误或字符无效，则会显示错误消息，但如果电子邮件重复，则我收到以下错误：

DoctrineDBALDBALException
File:
doctrine/dbal/lib/Doctrine/DBAL/DBALException.php:91
Message:
An exception occurred while executing 'INSERT INTO subscriber (email, token, active) VALUES (?, ?, ?)' with params ["[e-mail]", {}, 1]:
SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '[e-mail]' for key 'email'

Answer 1

通过使用@uniqueConstraint，请参阅此处：

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