function FileValidationConstraintValidator::validate

File

core/modules/file/src/Plugin/Validation/Constraint/FileValidationConstraintValidator.php, line 16

Class

FileValidationConstraintValidator

Checks that a file referenced in a file field is valid.

Namespace

Code

public function validate($value, Constraint $constraint) {
  // Get the file to execute validators.
  $target = $value->get('entity')
    ->getTarget();
  if (!$target) {
    return;
  }
  $file = $target->getValue();
  // Get the validators.
  $validators = $value->getUploadValidators();
  // Checks that a file meets the criteria specified by the validators.
  if ($errors = file_validate($file, $validators)) {
    foreach ($errors as $error) {
      $this->context
        ->addViolation($error);
    }
  }
}