我已经实现了一个忘记的密码表单并使用Symfonys电子邮件约束验证提供的电子邮件,但是即使我将主机和MX记录设置为true,它似乎也无法将空值或空值识别为无效的电子邮件地址。对我来说毫无意义。我在这里遗漏了什么或是预期的行为吗?
$email = $request->request->get('email');
$emailValidator = new Email();
$emailValidator->message = 'Invalid email address';
// use the validator to validate the value
$errorList = $this->get('validator')->validateValue(
$email,
$emailValidator
);
答案 0 :(得分:5)
查看验证器的the source:如果传递空字符串或null,则不执行任何操作。换句话说,空值总是会成功。
所以,这是预期的行为,虽然有关于改变它的票。
<?php
/**
* @author Bernhard Schussek <[...]>
*
* @api
*/
class EmailValidator extends ConstraintValidator
{
/**
* {@inheritDoc}
*/
public function validate($value, Constraint $constraint)
{
if (null === $value || '' === $value) {
return;
}
if (!is_scalar($value) && !(is_object($value) && method_exists($value, '__toString'))) {
throw new UnexpectedTypeException($value, 'string');
}
$value = (string) $value;
$valid = filter_var($value, FILTER_VALIDATE_EMAIL);
if ($valid) {
$host = substr($value, strpos($value, '@') + 1);
// Check for host DNS resource records
if ($valid && $constraint->checkMX) {
$valid = $this->checkMX($host);
} elseif ($valid && $constraint->checkHost) {
$valid = $this->checkHost($host);
}
}
if (!$valid) {
$this->context->addViolation($constraint->message, array('{{ value }}' => $value));
}
}
// ...
}
您需要使用NotBlank
和Email
<?php
use Symfony\Component\Validator\Constraints as Assert;
$emailValidator = new Assert\Email();
$emailValidator->message = 'Invalid email address';
$validator->validateValue($the_email, array(
new Assert\NotBlank(),
$emailValidator,
));