/**
* Internal helper function to get node with children.
*
* @param \BaseObject $instance
* @return array
*/
protected function _objectToJson(\BaseObject $instance)
{
$nodes = $this->lazy ? $instance->getChildren($this->query) : $instance->getDescendants($this->query);
if ($nodes instanceof \PropelCollection) {
$nodes = $nodes->getArrayCopy();
}
array_unshift($nodes, $instance);
$level = array();
foreach ($nodes as $node) {
$p = call_user_func($this->nodeCallback, $node, $this, $node->getTreeLevel());
$level[$node->getLevel()] =& $p;
if (isset($level[$node->getLevel() - 1])) {
$level[$node->getLevel() - 1]['children'][] =& $p;
}
unset($p);
}
return $level[$instance->getLevel()];
}
/**
* Deletes given node direct children.
*
* @param BaseObject $node
*/
public function deleteChildren(BaseObject $node)
{
// array_reverse() call is necessary for root node properties to be correctly updated
foreach (array_reverse($node->getChildren()) as $child) {
$child->delete();
}
}
