src/Tree/Traits/TreeTrait.php
public function getParent($id)
    {
        $node = $this->getSelf($id);
        if ($node) {
            $parentId = $node->{$this->getTreeNodeParentIdName()};

            return $this->getSelf($parentId);
        }
    }
public function getParent($id)
    {
        $node = $this->getSelf($id);
        if ($node) {
            $parentId = $node->{$this->getTreeNodeParentIdName()};

            return $this->getSelf($parentId);
        }
    }
public function getParent ( $ id ) { $ node = $ this -> getSelf ( $ id ) ; if ( $ node ) { $ parentId = $ node -> { $ this -> getTreeNodeParentIdName ( ) } ; return $ this -> getSelf ( $ parentId ) ; } }
获取父一级节点.

@param mixed $id

@return mixed
获取父一级节点 .