ThinkPHP无限级分类原理实现留言与回复功能实例

本文所述留言板程序使用了无限级分类的原理，可以实现无限级留言与回复。留言列表gclist保留了留言层次空格，使留言--回复层次分明。分享给大家供大家参考。具体分析如下：

功能上，本程序可以实现无限级留言与回复，即对留言回复，对回复的留言回复。当然你也可以作有限制的控制，使其只对留言回复，关键是在模板代码中去掉回复的留言中的“回复该留言”即可。欢迎去拍砖！

程序效果如下图所示：

完整源码点击此处。

数据表：

-- ----------------------------    
-- table structure for `wb_guestbook`    
-- ----------------------------    
drop table if exists `wb_guestbook`;    
create table `eway_guestbook` (    
  `id` int(10) unsigned not null auto_increment,    
  `pid` int(10) not null,    
  `email` varchar(50) not null,    
  `path` varchar(100) not null,    
  `username` varchar(30) not null,    
  `updatetime` int(10) not null,    
  `ip` varchar(15) not null,    
  `url` varchar(200) not null,    
  `inputtime` int(10) not null,    
  `content` text not null,    
  `verify` varchar(32) not null,    
  `isreply` tinyint(1) not null,    
  `status` tinyint(1) not null,    
  primary key (`id`)    
) engine=myisam auto_increment=42 default charset=utf8;

代码：

<?php    
// +----------------------------------------------------------------------    
// | wblog    
// +----------------------------------------------------------------------    
// | copyright (c) 2008  http://www.w3note.com all rights reserved.    
// +----------------------------------------------------------------------    
// | author: 网菠萝果    
// +----------------------------------------------------------------------    
// $id$    
/**    
 +------------------------------------------------------------------------------    
 * @class 留言板控制器guestbookaction.class.php    
 +------------------------------------------------------------------------------    
 */
class guestbookaction extends commonaction {    
    public function index(){    
        $garr= d('guestbook')->gclist("id,username,inputtime,pid,url,content,path,concat(path,'-',id) as bpath");    
                 
        $this->assign('gklist', $garr['list']);    
        $this->assign('page',$garr['page']);    
        $this->display();    
    }    
// +----------------------------------------------------------------------    
// | 添加留言    
// +----------------------------------------------------------------------    
                 
    public function add(){    
        $this->adddata('guestbook');    
                         
        }    
// +----------------------------------------------------------------------    
// | 网址跳转。如在表单url添加网址的话，点击会跳转到相关网站    
// +----------------------------------------------------------------------    
         
    public function tourl(){    
      $this->gettourl('guestbook');    
      }     
}    
?>    
<?php    
// +----------------------------------------------------------------------    
// | wblog    
// +----------------------------------------------------------------------    
// | copyright (c) 2008   http://www.w3note.com all rights reserved.    
// | author: 网菠萝果    
// +----------------------------------------------------------------------    
// $id$    
/**    
 +------------------------------------------------------------------------------    
 * @function 留言板模型 类guestbookmodel.class.php   
 +------------------------------------------------------------------------------    
 */
         
class guestbookmodel extends relationmodel{    
// +----------------------------------------------------------------------    
// | $_validate表单自动验证    
// +----------------------------------------------------------------------    
         
     protected $_validate  = array(    
                array('email','require','请填写您的邮箱!'),    
                array('email','email','邮箱格式错误！'),     
                         
               );    
// +----------------------------------------------------------------------    
// | $_auto表单自动填充    
// +----------------------------------------------------------------------    
                  
        protected $_auto=array(    
                 array('status','1'),      
                 array('inputtime','time',1,'function'),    
                 array('content','content',1,'callback'),    
                 array('url','geturl',1,'callback'),                    
                 array ('inputtime','time',1,'function'),    
                 array('path','path',3,'callback'),     
                 array('username','getusername',3,'callback'),                         
                   );       
// +----------------------------------------------------------------------    
// | getusername()过滤用户名    
// +----------------------------------------------------------------------            
      public function getusername(){    
          if (isset ($_post['username'])) {    
            if(trim($_post['username'])=='网菠萝果'){    
                return $data= '￣□￣';        
            }elseif(strlen($_post['username']) >10){                 
                return $data= msubstr($_post['username'],0,5);    
            }else{    
                return $data= $_post['username'];    
            }    
        }       
        }     
// +----------------------------------------------------------------------    
// | path()返回子类的path,父类的path的值为0    
// +----------------------------------------------------------------------      
     public function path(){    
           $pid=isset($_post['pid'])?(int)$_post['pid']:0;    
           $id=$_post['id'];    
            if($pid==0){                    
                return 0;    
            }    
                     
            $fat=$this->where(array('id' => $pid))->find();    
            $data=$fat['path'].'-'.$fat['id'];              
            return $data;    
        }    
// +----------------------------------------------------------------------    
// | content()过滤留言内容    
// +----------------------------------------------------------------------            
    public function content() {    
        if (isset ($_post['content']) && !empty ($_post['content'])) {    
             $data =deletehtmltags($_post['content']);    
             $data =safehtml($data);    
            if (strlen($data) > 1000) {    
                $data = msubstr($data, 0, 500);    
            }    
            return $data;    
          }    
           }    
 // +----------------------------------------------------------------------    
// | content()过滤url    
// +----------------------------------------------------------------------                
    public function geturl(){    
        if (isset ($_post['url'])) {    
        $data = deletehtmltags($_post['url']);    
        $data = safehtml($data);    
            return $data=$data?$data:"";    
        }    
    }       
// +----------------------------------------------------------------------    
// |gclist($field,$where='',$pagesize=30)留言列表    
// +----------------------------------------------------------------------    
// |$field,字段    
// +----------------------------------------------------------------------    
// |$where查询条件，默认为空    
// +----------------------------------------------------------------------    
// |$pagesize分页记录，默认为30     
// +----------------------------------------------------------------------    
// |使用方法，看上面的控制器调用    
// +----------------------------------------------------------------------    
         
     public function gclist($field,$where='',$pagesize=30) {    
        import("org.util.page");    
         $count = $this->field('id')->where($where)->count();    
         $p = new page($count, $pagesize);    
                  
        $list=$this->field($field)->where($where)->order('bpath,id')->limit($p->firstrow . ',' . $p->listrows)->select();    
         
        foreach ($list as $k => $v) {    
            $list[$k]['count'] = count(explode('-', $v['bpath']));    
            $list[$k]['tousername']=$this->where(array('id'=> $v['pid']))->getfield('username');    
            $str = '';    
            if ($v['pid'] <> 0) {    
                for ($i = 0; $i < $list[$k]['count'] * 2; $i++) {    
                    $str .= ' ';    
                }    
                $str .= ' ';    
            }    
            $list[$k]['space'] = $str;    
        }    
        $p->setconfig('header', '篇');    
        $p->setconfig('prev', "«");    
        $p->setconfig('next', '»');    
        $p->setconfig('first', '|«');    
        $p->setconfig('last', '»|');    
        $page = $p->show();    
        $arr=array('page'=>$page,'list'=>$list);    
        return $arr;    
    }    
}    
?>

希望本文所述对大家的thinkphp框架程序设计有所帮助。