class UniqueFieldValueValidator
Same name in other branches
- 8.9.x core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/UniqueFieldValueValidator.php \Drupal\Core\Validation\Plugin\Validation\Constraint\UniqueFieldValueValidator
- 10 core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/UniqueFieldValueValidator.php \Drupal\Core\Validation\Plugin\Validation\Constraint\UniqueFieldValueValidator
- 11.x core/lib/Drupal/Core/Validation/Plugin/Validation/Constraint/UniqueFieldValueValidator.php \Drupal\Core\Validation\Plugin\Validation\Constraint\UniqueFieldValueValidator
Validates that a field is unique for the given entity type.
Hierarchy
- class \Drupal\Core\Validation\Plugin\Validation\Constraint\UniqueFieldValueValidator extends \Symfony\Component\Validator\ConstraintValidator
Expanded class hierarchy of UniqueFieldValueValidator
File
-
core/
lib/ Drupal/ Core/ Validation/ Plugin/ Validation/ Constraint/ UniqueFieldValueValidator.php, line 11
Namespace
Drupal\Core\Validation\Plugin\Validation\ConstraintView source
class UniqueFieldValueValidator extends ConstraintValidator {
/**
* {@inheritdoc}
*/
public function validate($items, Constraint $constraint) {
if (!($item = $items->first())) {
return;
}
$field_name = $items->getFieldDefinition()
->getName();
/** @var \Drupal\Core\Entity\EntityInterface $entity */
$entity = $items->getEntity();
$entity_type_id = $entity->getEntityTypeId();
$id_key = $entity->getEntityType()
->getKey('id');
$query = \Drupal::entityQuery($entity_type_id);
// @todo Don't check access. http://www.drupal.org/node/3171047
$query->accessCheck(TRUE);
$entity_id = $entity->id();
// Using isset() instead of !empty() as 0 and '0' are valid ID values for
// entity types using string IDs.
if (isset($entity_id)) {
$query->condition($id_key, $entity_id, '<>');
}
$value_taken = (bool) $query->condition($field_name, $item->value)
->range(0, 1)
->count()
->execute();
if ($value_taken) {
$this->context
->addViolation($constraint->message, [
'%value' => $item->value,
'@entity_type' => $entity->getEntityType()
->getSingularLabel(),
'@field_name' => $items->getFieldDefinition()
->getLabel(),
]);
}
}
}
Members
Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.