/**
* Given an entity reference definition, gets the original entity ID.
*
* @param array $definition The entity reference definition.
* @param Entity $current_entity The current entity (optional).
*
* @return bool|Entity|null
* @throws InvalidReferenceDefinitionException
*/
public static function entityFromReferenceDefinition(array $definition, Entity $current_entity = null)
{
// Verify the reference definition.
if (($message = HandlerBase::verifyReferenceDefinition($definition)) !== true) {
throw new InvalidReferenceDefinitionException($message);
}
// Make sure the current entity ID and the reference definition ID are different.
if ($current_entity && $definition['uuid'] == $current_entity->uuid()) {
return null;
}
// Try to load the entity.
$entity = Entity::loadByUUID($definition['uuid'], $definition['entity_type']);
if (!$entity) {
// Check to see if there is a relationship for the entity.
if ($current_entity) {
$count = db_select('publisher_pending_relationships', 'r')->condition('source_type', $current_entity->type())->condition('source_uuid', $current_entity->uuid())->condition('destination_type', $definition['entity_type'])->condition('destination_uuid', $definition['uuid'])->countQuery()->execute()->fetchField();
if ($count > 0) {
return false;
}
}
throw new InvalidReferenceDefinitionException(t('The @type @uuid does not exist.', array('@type' => $definition['entity_type'], '@uuid' => $definition['uuid'])));
}
return $entity;
}
