在頭部可以直接發布一級評論,最新發表的評論顯示在最上面,如下效果圖
對發表的評論可以回複，回複顯示在上級評論下邊，形成層級關係，如下效果圖
頁面操作細節:點擊某個評論的回複按鈕時，顯示回複文本輸入框，同時其他評論的回複文本輸入框消失，當再次點擊該回複按鈕時，該文字框消失
在最後一級評論(這裡設定是第三級)關閉回複功能 即時顯示評論總數 二、實現思路及細節 1.資料表設計
2.controller層關鍵函數:
(1). 遞迴擷取評論列表
/***遞迴擷取評論列表 */ protected function getCommlist($parent_id = 0,&$result = array()){ $arr = M('comment')->where("parent_id = '".$parent_id."'")->order("create_time desc")->select(); if(empty($arr)){ return array(); } foreach ($arr as $cm) { $thisArr=&$result[]; $cm["children"] = $this->getCommlist($cm["id"],$thisArr); $thisArr = $cm; } return $result; }
(2). 展示評論頁面的action
public function index(){ $num = M('comment')->count(); //擷取評論總數 $this->assign('num',$num); $data=array(); $data=$this->getCommlist();//擷取評論列表 $this->assign("commlist",$data); $this->display('index'); }
(3).評論頁面ajax訪問添加評論的action
/***添加評論 */ public function addComment(){ $data=array(); if((isset($_POST["comment"]))&&(!empty($_POST["comment"]))){ $cm = json_decode($_POST["comment"],true);//通過第二個參數true，將json字串轉化為索引值對數組 $cm['create_time']=date('Y-m-d H:i:s',time()); $newcm = M('comment'); $id = $newcm->add($cm); $cm["id"] = $id; $data = $cm; $num = M('comment')->count();//統計評論總數 $data['num']= $num; }else{ $data["error"] = "0"; } echo json_encode($data); }
3.view層實現
(1). 展示頁面的整體結構設計
實際效果:
頁面html代碼:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html lang="en"><head> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>php無限級分類實戰————評論及回複功能</title> <link rel="stylesheet" type="text/css" href="/Public/css/comment.css"> <script type="text/javascript" src="/Public/js/jquery-1.11.3.min.js" ></script> <script type="text/javascript" src="/Public/js/comment.js" ></script></head><body><div class="comment-filed"> <!--發表評論區begin--> <div> <div class="comment-num"> <span>{$num}條評論</span> </div> <div> <div> <textarea class="txt-commit" replyid="0"></textarea> </div> <div class="div-txt-submit"> <a class="comment-submit" parent_id="0" style="" href="javascript:void(0);"><span style=''>發表評論</span></a> </div> </div> </div> <!--發表評論區end--> <!--評論列表顯示區begin--> <!-- {$commentlist} --> <div class="comment-filed-list" > <div><span>全部評論</span></div> <div class="comment-list" > <!--一級評論列表begin--> <ul class="comment-ul"> <volist name="commlist" id="data"> <li comment_id="{$data.id}"> <div > <div> <img class="head-pic" src="{$data.head_pic}" alt=""> </div> <div class="cm"> <div class="cm-header"> <span>{$data.nickname}</span> <span>{$data.create_time}</span> </div> <div class="cm-content"> <p> {$data.content} </p> </div> <div class="cm-footer"> <a class="comment-reply" comment_id="{$data.id}" href="javascript:void(0);">回複</a> </div> </div> </div> <!--二級評論begin--> <ul class="children"> <volist name="data.children" id="child" > <li comment_id="{$child.id}"> <div > <div> <img class="head-pic" src="{$child.head_pic}" alt=""> </div> <div class="children-cm"> <div class="cm-header"> <span>{$child.nickname}</span> <span>{$child.create_time}</span> </div> <div class="cm-content"> <p> {$child.content} </p> </div> <div class="cm-footer"> <a class="comment-reply" replyswitch="off" comment_id="{$child.id}" href="javascript:void(0);">回複</a> </div> </div> </div> <!--三級評論begin--> <ul class="children"> <volist name="child.children" id="grandson" > <li comment_id="{$grandson.id}"> <div > <div> <img class="head-pic" src="{$grandson.head_pic}" alt=""> </div> <div class="children-cm"> <div class="cm-header"> <span>{$grandson.nickname}</span> <span>{$grandson.create_time}</span> </div> <div class="cm-content"> <p> {$grandson.content} </p> </div> <div class="cm-footer"> <!-- <a class="comment-reply" comment_id="1" href="javascript:void(0);">回複</a> --> </div> </div> </div> </li> </volist> </ul> <!--三級評論end--> </li> </volist> </ul> <!--二級評論end--> </li> </volist> </ul> <!--一級評論列表end--> </div> </div> <!--評論列表顯示區end--></div> </body></html>
(2). 單個評論資訊div結構代碼
<div > <div> <img class="head-pic" src="{$data.head_pic}" alt=""> </div> <div class="cm"> <div class="cm-header"> <span>{$data.nickname}</span> <span>{$data.create_time}</span> </div> <div class="cm-content"> <p> {$data.content} </p> </div> <div class="cm-footer"> <a class="comment-reply" comment_id="{$data.id}" href="javascript:void(0);">回複</a> </div> </div> </div>
對應的效果圖:
對應的css代碼:
.head-pic{ width:40px; height:40px; }.cm{ position:relative; top:0px; left:40px; top:-40px; width:600px;}.cm-header{ padding-left:5px;}.cm-content{ padding-left:5px;}.cm-footer{ padding-bottom:15px; text-align:right; Start building with 50+ products and up to 12 months usage for Elastic Compute Service
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