/**
* Returns the values of the identifier fields of an entity.
*
* Doctrine must know about this entity, that is, the entity must already
* be persisted or added to the identity map before. Otherwise an
* exception is thrown.
*
* @param object $entity The entity for which to get the identifier
*
* @throws InvalidArgumentException If the entity does not exist in Doctrine's
* identity map
*
* @return array
*/
public function getIdentifierValues($entity)
{
try {
return $this->modelManager->getIdentifierValues($entity);
} catch (\Exception $e) {
throw new InvalidArgumentException(sprintf('Unable to retrieve the identifier values for entity %s', ClassUtils::getClass($entity)), 0, $e);
}
}
/**
* {@inheritdoc}
*/
public function transform($entityOrCollection)
{
$result = array();
if (!$entityOrCollection) {
return $result;
}
if ($this->multiple) {
$isArray = is_array($entityOrCollection);
if (!$isArray && substr(get_class($entityOrCollection), -1 * strlen($this->className)) == $this->className) {
throw new \InvalidArgumentException('A multiple selection must be passed a collection not a single value. Make sure that form option "multiple=false" is set for many-to-one relation and "multiple=true" is set for many-to-many or one-to-many relations.');
} elseif ($isArray || $entityOrCollection instanceof \ArrayAccess) {
$collection = $entityOrCollection;
} else {
throw new \InvalidArgumentException('A multiple selection must be passed a collection not a single value. Make sure that form option "multiple=false" is set for many-to-one relation and "multiple=true" is set for many-to-many or one-to-many relations.');
}
} else {
if (substr(get_class($entityOrCollection), -1 * strlen($this->className)) == $this->className) {
$collection = array($entityOrCollection);
} elseif ($entityOrCollection instanceof \ArrayAccess) {
throw new \InvalidArgumentException('A single selection must be passed a single value not a collection. Make sure that form option "multiple=false" is set for many-to-one relation and "multiple=true" is set for many-to-many or one-to-many relations.');
} else {
$collection = array($entityOrCollection);
}
}
if (empty($this->property)) {
throw new \RuntimeException('Please define "property" parameter.');
}
foreach ($collection as $entity) {
$id = current($this->modelManager->getIdentifierValues($entity));
if ($this->toStringCallback !== null) {
if (!is_callable($this->toStringCallback)) {
throw new \RuntimeException('Callback in "to_string_callback" option doesn`t contain callable function.');
}
$label = call_user_func($this->toStringCallback, $entity, $this->property);
} else {
try {
$label = (string) $entity;
} catch (\Exception $e) {
throw new \RuntimeException(sprintf("Unable to convert the entity %s to String, entity must have a '__toString()' method defined", ClassUtils::getClass($entity)), 0, $e);
}
}
$result[] = $id;
$result['_labels'][] = $label;
}
return $result;
}
/**
* Returns the values of the identifier fields of an entity
*
* Doctrine must know about this entity, that is, the entity must already
* be persisted or added to the identity map before. Otherwise an
* exception is thrown.
*
* @param object $entity The entity for which to get the identifier
* @throws FormException If the entity does not exist in Doctrine's
* identity map
*/
public function getIdentifierValues($entity)
{
return $this->modelManager->getIdentifierValues($entity);
}