初步完成数据收藏功能

application/models/data/Favorite.php

@@ -0,0 +1,94 @@
+<?php
+namespace data;
+class Favorite extends Zend_Controller_Plugin_Abstract
+{
+	public $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_favorite = "favorite";	//用户收藏表
+	public $fav_max;
+	
+	function __construct($db)
+	{
+		if(empty($db))
+		{
+			$this->db = \Zend_Registry::get('db');
+		}else{
+			$this->db = $db;
+		}
+		
+		$this->config = \Zend_Registry::get('config');
+		
+		$this->fav_max = empty($this->config->favorite->limit) ? 50 : $this->config->favorite->limit ;
+	}
+	
+	function like($uuid,$uid = 0)
+	{
+		if(empty($uid))
+		{
+			$uid = \view::User('id');
+		}
+		
+		if(!is_numeric($uid))
+		{
+			$uid = \view::User('id');
+		}
+		
+		if(!preg_match("/^[0-9A-Za-z]{8}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{12}$/",$uuid))
+		{
+			return "参数错误";
+		}
+		
+		if($this->checkUserFavNum($uid))
+		{
+			if($this->checkAlreadyLike($uuid,$uid))
+			{
+				$sql = "INSERT INTO {$this->tbl_favorite} (uid,uuid) VALUES ($uid,'$uuid')";
+				if($this->db->exec($sql))
+				{
+					return true;
+				}else{
+					return "收藏失败，请重试";
+				}
+			}else{
+				return "您已经收藏过此数据";
+			}
+		}else{
+			return "您的收藏量已达到系统允许的上限";
+		}
+		
+	}
+	
+	//检查是否达到允许的收藏上限
+	public function checkUserFavNum($uid)
+	{		
+		$sql = "SELECT count(id) as c FROM {$this->tbl_favorite} WHERE uid=$uid";
+		
+		$rs = $this->db->query($sql);
+		
+		$row = $rs->fetch();
+		
+		if($row['c'] >= $this->fav_max)
+		{
+			return false;
+		}else{
+			return true;
+		}
+	}
+	
+	//检查是否已经搜藏过
+	public function checkAlreadyLike($uuid,$uid)
+	{
+		$sql = "SELECT * FROM {$this->tbl_favorite} WHERE uid=$uid AND uuid='$uuid'";
+		$rs = $this->db->query($sql);
+		$row = $rs->fetch();
+		if(isset($row['uuid']) && !empty($row['uuid']))
+		{
+			return false;
+		}else{
+			return true;
+		}
+	}
+}

htdocs/js/metadata-view.js

@@ -1,5 +1,43 @@
 var method = {};
 
+//收藏数据
+method.like = function(uuid,btn){
+	text = $(btn).text();
+	current_event = $(btn).attr('onclick');
+	$.ajax({
+		type:"GET",
+		url:"/data/like/",
+		data:'uuid=' + uuid,
+		success:function(data){
+			if (typeof(data)=='object')
+			{
+				if(typeof(data.error) !== 'undefined')
+				{
+					Alert(data.error);return false;
+				}else{
+					Alert("收藏成功！");
+				}
+			}
+			else{ 
+				Alert('出现错误，请稍后再试');
+			}
+		},
+		beforeSend:function(){
+			$(btn).removeAttr('onclick');
+			$(btn).html('<img src="/images/ajax-load-small.gif" />');
+		},
+		timeout: 15000,
+		error: function(){
+			Alert('处理中出现错误，请刷新页面后重试');
+		},
+		complete:function(){
+			$(btn).attr('onclick',current_event);
+			$(btn).html(text);
+		}
+	});
+}
+
+//文件列表
 method.filelist = {
 	get : function(uuid){
 		html ='<div id="window-outter">'