function NoFieldItemsExistWithHigherCardinalityValidator::validate

File

core/modules/field/src/Plugin/Validation/Constraint/NoFieldItemsExistWithHigherCardinalityValidator.php, line 55

Class

NoFieldItemsExistWithHigherCardinalityValidator

Validates the NoFieldItemsExistWithHigherCardinality constraint.

Namespace

Code

public function validate(mixed $value, SymfonyConstraint $constraint) : void {
  assert($constraint instanceof NoFieldItemsExistWithHigherCardinality);
  // Cardinality should be an int, but could be passed differently.
  $cardinality = (int) $value;
  if ($cardinality === FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED) {
    return;
  }
  $object = $this->context
    ->getObject();
  assert($object instanceof TypedDataInterface);
  $entity_type = TypeResolver::resolveExpression($constraint->entityType, $object);
  $field_name = TypeResolver::resolveExpression($constraint->fieldName, $object);
  // We cannot check this constraint if the field storage does not exist.
  $fieldStorageConfig = $this->entityTypeManager
    ->getStorage('field_storage_config')
    ->load($entity_type . '.' . $field_name);
  if ($fieldStorageConfig === NULL) {
    return;
  }
  if ($fieldStorageConfig->hasCustomStorage()) {
    // If the field storage has custom storage, we cannot check this
    // constraint.
    return;
  }
  $max_delta_alias = 'max_delta';
  $query = $this->entityTypeManager
    ->getStorage($entity_type)
    ->getAggregateQuery()
    ->aggregate($field_name . '.%delta', 'MAX', NULL, $max_delta_alias)
    ->accessCheck(FALSE);
  $result = $query->execute();
  $max_delta = 0;
  if (is_array($result) && !empty($result)) {
    if ($result[0][$max_delta_alias] !== NULL) {
      // Delta starts at 0, so we need to add 1 to get the count of
      // existing values.
      $max_delta = (int) $result[0][$max_delta_alias] + 1;
    }
  }
  if ($max_delta > $cardinality) {
    $this->context
      ->addViolation($constraint->message, [
      '@entity_type' => $entity_type,
      '@field_name' => $field_name,
      '@max_delta' => $max_delta,
      '@cardinality' => $cardinality,
    ]);
  }
}