ModelBundle/Repository/NodeRepository.php
protected function generateTree(array $nodes, $parentId)
    {
        if (empty($nodes)) {
            return array();
        }

        $nodesRoot = array_filter($nodes, function($node, $key) use ($parentId) {
            $property = 'nodeId';
            if (NodeInterface::ROOT_PARENT_ID === $parentId) {
                $property = 'parentId';
            }
            if ($parentId !== $node['node'][$property]) {
                return false;
            }
            return true;
        }, ARRAY_FILTER_USE_BOTH);

        $tree = array();
        foreach ($nodesRoot as $nodeRoot) {
            $tree[] = array('node' => $nodeRoot['node'], 'child' => $this->getChildren($nodeRoot['nodeId'], $nodes));
        }
        uasort($tree, array($this, 'sortTree'));
        $tree = array_values($tree);

        return $tree;
    }
protected function generateTree(array $nodes, $parentId)
    {
        if (empty($nodes)) {
            return array();
        }

        $nodesRoot = array_filter($nodes, function($node, $key) use ($parentId) {
            $property = 'nodeId';
            if (NodeInterface::ROOT_PARENT_ID === $parentId) {
                $property = 'parentId';
            }
            if ($parentId !== $node['node'][$property]) {
                return false;
            }
            return true;
        }, ARRAY_FILTER_USE_BOTH);

        $tree = array();
        foreach ($nodesRoot as $nodeRoot) {
            $tree[] = array('node' => $nodeRoot['node'], 'child' => $this->getChildren($nodeRoot['nodeId'], $nodes));
        }
        uasort($tree, array($this, 'sortTree'));
        $tree = array_values($tree);

        return $tree;
    }
@param array  $nodes
@param string $parentId

@return array