public function validate($value, $primary, array $row, Entity\Field $field)
{
$entity = $field->getEntity();
$primaryNames = $entity->getPrimaryArray();
$query = new Entity\Query($entity);
$query->setSelect($primaryNames);
$query->setFilter(array('=' . $field->getName() => $value));
$query->setLimit(2);
$result = $query->exec();
while ($existing = $result->fetch()) {
// check primary
foreach ($existing as $k => $v) {
if (!isset($primary[$k]) || $primary[$k] != $existing[$k]) {
return $this->getErrorMessage($value, $field);
}
}
}
return true;
}
