/**
* Returns children nodes
* @return TreeNode[]
*/
public function getChildren()
{
$nodes = array();
if (!$this->hasChildren()) {
return $nodes;
}
$callback = $this->callback;
if (is_callable($callback)) {
$children = call_user_func($callback, $this->getEntity(), $this->options);
} else {
$children = hypeCategories()->categories->getSubcategories($this->getEntity(), $this->options, true);
}
if (is_array($children)) {
$children = ItemCollection::create($children)->guids();
}
foreach ($children as $child) {
$nodes[] = new TreeNode($child, $this, $this->callback, $this->options);
}
return $nodes;
}
/**
* Replaces entity categories
*
* @param ElggEntity $entity Entity
* @param array $categories New categories (guids or entities)
* @param array $options ege* options for retrieving current entity categories
* @return array
*/
public function setItemCategories(ElggEntity $entity, array $categories = array(), array $options = array())
{
$input_categories = ItemCollection::create($categories)->guids();
$future_categories = array();
$current_categories_batch = $this->getItemCategories($entity, $options, true);
foreach ($input_categories as $guid) {
$category = get_entity($guid);
if (!$category) {
continue;
}
$universal_categories[] = $category->getDisplayName();
$hierarchy = $this->getHierarchy($category, true, true);
$future_categories = array_merge($future_categories, $hierarchy);
}
$current_categories = array();
foreach ($current_categories_batch as $c) {
$current_categories[] = $c->guid;
}
// Storing categories metadata for compatibility with categories plugin
$entity->universal_categories = $universal_categories;
$relationship = $this->config->get('relationship');
$to_remove = array_diff($current_categories, $future_categories);
$to_add = array_diff($future_categories, $current_categories);
foreach ($to_remove as $guid) {
remove_entity_relationship($entity->guid, $relationship, $guid);
}
foreach ($to_add as $guid) {
add_entity_relationship($entity->guid, $relationship, $guid);
}
return $to_add;
}
/**
* Create a new group from a mixed data set
*
* @param array $data Data set
* @return ItemCollection
*/
public static function create($data)
{
$group = new ItemCollection();
return $group->add($data);
}
