爲什麼Symfony2在方括號中驗證propertyPath valus？

Question

我驗證的一些值：

$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); 

但由於某些原因的領域（的PropertyPath）存儲用方括號 - 我想明白爲什麼順豐做到這一點。我必須手動刪除所有似乎荒謬的括號，所以我認爲我錯過了某處的某些功能。

$錯誤的轉儲：

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ToString函數是沒用的。

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

Answer 1

屬性路徑可以映射到屬性或索引。考慮實施\ArrayAccess的OptionBag類和getSize()的方法。

• 屬性路徑size指$optionBag->getSize()
• 屬性路徑[size]指$optionBag['size']

在你的情況，你驗證的數組。由於數組元素也可以通過索引訪問，因此違例中的結果屬性路徑包含方括號。

更新：

您不必手動刪除的方括號。您可以使用的Symfony的PropertyAccess組件的錯誤與相同結構的數據映射到一個數組，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.', 
) 

這也適用於多維數據數組。那裏的物業路徑將像[author][name]。 PropertyAccessor會將錯誤消息插入$errors陣列中的相同位置，即$errors['author']['name'] = 'Message'。