为什么Symfony2验证propertyPath valus在方括号中？

Question

我正在验证一些值:

$collectionConstraint = new Collection(array(
    'email' => array(
        new NotBlank(),
        new Email(),
    ),
    'password'  => array(
         new NotBlank(),
         new MinLength(array('limit' => 6)),
         new MaxLength(array('limit' => 25)),
    ),
));
$data = array('email' => $this->getRequest()->get('email'), 'password' => $this->getRequest()->get('password'));
$errors = $this->get('validator')->validateValue($data, $collectionConstraint);

但由于某种原因,字段(propertyPath)存储方括号 - 我想了解为什么Sf这样做.我必须手动删除所有看似荒谬的括号,所以我想我在某处遗漏了一些功能.

转储$错误:

Symfony\Component\Validator\ConstraintViolationList Object
(
    [violations:protected] => Array
        (
            [0] => Symfony\Component\Validator\ConstraintViolation Object
                (
                    [messageTemplate:protected] => This value should not be blank
                    [messageParameters:protected] => Array
                        (
                        )

                    [root:protected] => Array
                        (
                            [email] => 
                            [password] => 
                        )

                    [propertyPath:protected] => [email]
                    [invalidValue:protected] => 
                )

            [1] => Symfony\Component\Validator\ConstraintViolation Object
                (
                    [messageTemplate:protected] => This value should not be blank
                    [messageParameters:protected] => Array
                        (
                        )

                    [root:protected] => Array
                        (
                            [email] => 
                            [password] => 
                        )

                    [propertyPath:protected] => [password]
                    [invalidValue:protected] => 
                )

        )

)

即使是toString函数也没用.

"[email]: This value should not be blank","[password]: This value should not be blank"

Answer 1

属性路径可以映射到属性或索引.考虑一个OptionBag实现的类\ArrayAccess和一个方法getSize().

• 属性路径size是指$optionBag->getSize()
• 属性路径[size]是指$optionBag['size']

在您的情况下,您验证一个数组.由于数组元素也是通过索引访问的,因此违规中生成的属性路径包含方括号.

更新:

您不必手动删除方括号.您可以使用Symfony的PropertyAccess组件将错误映射到与数据结构相同的数组,例如:

$collectionConstraint = new Collection(array(
    'email' => array(
        new NotBlank(),
        new Email(),
    ),
    'password'  => array(
         new NotBlank(),
         new MinLength(array('limit' => 6)),
         new MaxLength(array('limit' => 25)),
    ),
));

$data = array(
    'email' => $this->getRequest()->get('email'), 
    'password' => $this->getRequest()->get('password')
);

$violations = $this->get('validator')->validateValue($data, $collectionConstraint);

$errors = array();
$accessor = $this->get('property_accessor');

foreach ($violations as $violation) {
    $accessor->setValue($errors, $violation->getPropertyPath(), $violation->getMessage());
}

=> array(
    'email' => 'This value should not be blank.',
    'password' => 'This value should have 6 characters or more.',
)

这也适用于多维数据阵列.那里的物业路径就像[author][name].PropertyAccessor将错误消息插入到$errors数组中的相同位置,即$errors['author']['name'] = 'Message'.