<?php
class Author extends Zend_Controller_Plugin_Abstract
{
	private $db;				//传入PDO对象.
	private $auth = NULL;		//Zend_Auth 对象
	
	//使用到的公共变量
	public $tbl_metadata = "metadata";	//元数据
	public $tbl_author = "mdauthor";	//数据作者表
	
	function __construct($db)
	{
		$this->db = $db;
	}
	
	//检查前台用户对某条数据的权限
	function checkAuthor($uuid,$uid=0)
	{
		if(empty($uid))
		{
			$auth = Zend_Auth::getInstance();
			if($auth->hasIdentity())
			{
				$user = $auth->getIdentity();
				$uid = $user->id;
			}
		}
		if(!empty($uid))
		{
			$sql = "SELECT * FROM ".$this->tbl_author." WHERE uuid='$uuid' AND userid=$uid";
		}else{
			return false;
		}
		
		$rs = $this->db->query($sql);
		$row = $rs->fetch(PDO::FETCH_BOTH);
		if($row['status']>0)
		{
			return true;
		}else{
			return false;
		}
	}
}