thinkPHP+LayUI 流加载实现功能

<div class="layui-container" id="container"  </div 

layui.use('flow', function() {
  var $ = layui.jquery;
  var flow = layui.flow;
    flow.load({
    elem: '#container' //流加载容器
      //滚动条所在元素，一般不用填，此处只是演示需要。
    ,done: function(page, next){ //执行下一页的回调
     console.log(page)
     //模拟数据插入
     setTimeout(function(){
      var lis = [];
      var url = "/index/index/ajaxNews/?page="+page
      $.get(url,function (res) {
        
          layui.each(res.msg.data, function(index, item) {
            lis.push('<div class="layui-row list" 
              <a href="newsDesc/id/'+item.id+'" rel="external nofollow"  
                <div class="layui-col-xs4 layui-col-sm4 " 
                  <img src="'+item.cover_img+'" 
                </div 
                <div class="layui-col-xs7 layui-col-sm7 right" 
                  <div class="title" '+item.title+'</div 
                  <div class="intro" '+item.intro+'</div 
                </div 
              </a 
            </div 
            <hr/  ');
          });//组装html
          //pages为Ajax返回的总页数，只有当前页小于总页数的情况下，才会继续出现加载更多
          next(lis.join(''), page <= res.msg.pages);
        
      })
     }, 300);
    }
   });
});
</script 

public function ajaxNews()
  {
    $page = input('page');  //页码
    $pagesize = 6;
    $list['data'] = model('Index')- getNewsList($page,$pagesize);
    $count= model('Index')- getNewsCount();
    $list['pages'] = ceil($count/$pagesize);
    if ($list) {
      return return_succ($list);
    }else{
    return return_error('暂无数据');
    }
  }

// 获取动态列表
  public function getNewsList($page,$pagesize)
  {
    $list = Db::name('news')
      - field('id,title,intro,cover_img')
      - order('create_time desc')
      - where(['status'= 0])
      - page($page,$pagesize)
      - select();
    return $list;
  }
  //获取动态总条数
  public function getNewsCount()
  {
    $count = Db::name('news')- where(['status'= 0])- count();
    return $count;
  }