+ /**
+ * Search siblings items in the system.
+ */
+ public function searchSiblings(Request $request)
+ {
+ $type = $request->get('entity_type', null);
+ $id = $request->get('entity_id', null);
+
+ $entity = Entity::getEntityInstance($type)->newQuery()->visible()->find($id);
+ if (!$entity) {
+ return $this->jsonError(trans('errors.entity_not_found'), 404);
+ }
+
+ $entities = [];
+
+ // Page in chapter
+ if ($entity->isA('page') && $entity->chapter) {
+ $entities = $entity->chapter->getVisiblePages();
+ }
+
+ // Page in book or chapter
+ if (($entity->isA('page') && !$entity->chapter) || $entity->isA('chapter')) {
+ $entities = $entity->book->getDirectChildren();
+ }