[JavaScript知识库]tree.render设置默认折叠

记录：tree.render设置默认折叠，此设置比较特殊，由后台返回数据参数spread决定

php 代码：

    /**
     * 根据角色ID获取授权节点
     * @param $authId
     * @return array
     * @throws \think\db\exception\DataNotFoundException
     * @throws \think\db\exception\DbException
     * @throws \think\db\exception\ModelNotFoundException
     */
    public function getAuthorizeNodeListByAdminId($authId)
    {
        $checkNodeList = (new SystemAuthNode())
            ->where('auth_id', $authId)
            ->column('node_id');
        $systemNode = new SystemNode();
        $nodelList = $systemNode
            ->where('is_auth', 1)
            ->field('id,node,title,type,is_auth')
            ->select()
            ->toArray();
        $newNodeList = [];
        foreach ($nodelList as $vo) {
            if ($vo['type'] == 1) {
                // spread：设置是否展开
                $vo = array_merge($vo, ['field' => 'node', 'spread' => false]);
                $vo['checked'] = false;
                $vo['title'] = "{$vo['title']}【{$vo['node']}】";
                $children = [];
                foreach ($nodelList as $v) {
                    if ($v['type'] == 2 && strpos($v['node'], $vo['node'] . '/') !== false) {
                        $v = array_merge($v, ['field' => 'node', 'spread' => true]);
                        $v['checked'] = in_array($v['id'], $checkNodeList) ? true : false;
                        $v['title'] = "{$v['title']}【{$v['node']}】";
                        $children[] = $v;
                    }
                }
                !empty($children) && $vo['children'] = $children;
                $newNodeList[] = $vo;
            }
        }
        return $newNodeList;
    }

js 代码：

		authorize: function () {
            var tree = layui.tree;

            ea.request.get(
                {
                    url: window.location.href,
                }, function (res) {
                    res.data = res.data || [];
                    tree.render({
                        elem: '#node_ids',
                        data: res.data,
                        showCheckbox: true,
                        id: 'nodeDataId',
                        onlyIconControl: false,
                        text: {
                            none: '<div class="cate-empty">无</div>',
                        },
                    });
                }
            );
            ea.listen(function (data) {
                var checkedData = tree.getChecked('nodeDataId');
                var ids = [];
                $.each(checkedData, function (i, v) {
                    ids.push(v.id);
                    if (v.children !== undefined && v.children.length > 0) {
                        $.each(v.children, function (ii, vv) {
                            ids.push(vv.id);
                        });
                    }
                });
                data.node = JSON.stringify(ids);
                return data;
            });

        }

效果：