>[danger]上節課我們講了如何開發插件，這一節課我們用一個實例來講解如何開發一個評論插件 有些做過其他系統的插件開發的同學，再來學iWebShop的插件開發，很容易就上手，有些也可能發現iWebShop插件開發時，對前端頁面的控制目前支持得還不是很靈活。因此，我做這個評論插件，我就采用以下方法開發： 后端維護的功能，用插件實現，前端評論，使用我們之前學的模板開發的方式來做 ## 一、建立插件 在插件目錄下增加“comment”目錄，創建如下三個文件：  comment.php中加入以下代碼： ~~~ class comment extends pluginBase{ //【必填】插件中文名稱 public static function name() { return "三眾科技評論插件"; } //【必填】插件的功能簡介 public static function description() { return "文章評論插件"; } //安裝插件代碼 public static function install() { $commentDB = new IModel('article_comment');//表名article_comment //判斷表是否存在 if($commentDB->exists()) { return true; } $data = array( "comment" => self::name(), "column" => array( "id" => array("type" => "int(11) unsigned",'auto_increment' => 1), "content" => array("type" => "text","comment" => "評論內容"), "create_time" => array("type" => "int(11) unsigned","default" => "0","comment" => "評論時間"), "recontents" => array("type" => "text","comment" => "回復內容"), "recomment_time" => array("type" => "int(11) unsigned","default" => "0","comment" => "回復時間"), "aid" => array("type" => "int(11) unsigned","default" => "0","comment" => "文章id"), "uid" => array("type" => "int(11) unsigned","default" => "0","comment" => "用戶id") ), "index" => array("primary" => "id","key" => "aid,uid"), ); $commentDB->setData($data); //開始創建表 return $commentDB->createTable(); } //卸載插件代碼 public static function uninstall() { $commentDB = new IModel('article_comment'); //刪除表 return $commentDB->dropTable(); } //插件參數配置 public static function configName() { //在本拿了中無參數配置 } } ~~~ 之后在后臺中就可以安裝插件了 ? 以上為每個插件必須的，如不需要操作數據庫的，可以不用寫數據庫代碼。 ## 二、管理后臺功能維護 功能注冊，comment.php中加入以下代碼： ~~~ public function reg() { //后臺插件管理中增加該插件鏈接 plugin::reg("onSystemMenuCreate",function(){ $link = "/plugins/system_comment_list"; Menu::$menu["插件"]["插件管理"][$link] = $this->name(); }); //后臺評論列表的鏈接 plugin::reg("onBeforeCreateAction@plugins@system_comment_list",function(){ self::controller()->system_comment_list = function(){$this->comment_list();}; }); //后臺評論詳情的鏈接 plugin::reg("onBeforeCreateAction@plugins@system_comment_edit",function(){ self::controller()->system_comment_edit = function(){$this->comment_edit();}; }); //后臺評論回復的鏈接 plugin::reg("onBeforeCreateAction@plugins@system_comment_update",function(){ self::controller()->system_comment_update = function(){$this->comment_update();}; }); //后臺評論刪除的鏈接 plugin::reg("onBeforeCreateAction@plugins@system_comment_del",function(){ self::controller()->system_comment_del = function(){$this->comment_del();}; }); } ~~~ 功能實現，comment.php中加入以下代碼： ~~~ public function comment_list() { $this->redirect('system_comment_list'); } public function comment_edit() { $id = IFilter::act(IReq::get('id')); $commentDB = new IQuery('article_comment as c'); $commentDB->join=" left join article as b on c.aid = b.id left join user as a on c.uid = a.id "; $commentDB->where=" c.id=$id "; $commentDB->fields ="c.id,FROM_UNIXTIME(c.create_time) as create_time,a.username,b.title,c.recomment_time,c.recontents,c.content"; $items = $commentDB->find(); $this->redirect('system_comment_edit',array('comment' => current($items))); } //回復評論 public function comment_update() { $id = IFilter::act(IReq::get('id')); $recontents = IFilter::act(IReq::get('recontents')); $data = array(); $data['recontents']=$recontents; $data['recomment_time']=time(); //保存數據庫 $commentDB = new IModel('article_comment'); $commentDB->setData($data); $commentDB->update('id = '.$id); $this->redirect('system_comment_list'); } //回復刪除 public function comment_del() { $commentDB = new IModel('article_comment'); $id = IFilter::act(IReq::get('id')); $commentDB->del('id = '.$id); $this->redirect('system_comment_list'); } ~~~ 后臺管理頁面，評論列表：system_comment_list.html ~~~ <div class="headbar"> <div class="position"><span>文章</span><span>></span><span>評論管理</span></div> </div> <form action="{url:/plugins/system_comment_del}" method="post" name="comment_list" onsubmit="return checkboxCheck('check[]','尚未選中任何記錄！')"> <div class="content"> <table class="list_table"> <colgroup> <col width="10px" /> <col width="100px" /> <col width="220px" /> <col width="75px" /> <col width="95px" /> </colgroup> <thead> <tr> <th></th> <th>評論人</th> <th>評論文章</th> <th>評論時間</th> <th>操作</th> </tr> </thead> <tbody> {set:$page= (isset($_GET['page'])&&(intval($_GET['page'])>0))?intval($_GET['page']):1;} {query: name=article_comment as c join=left join article as b on c.aid eq b.id left join user as a on c.uid eq a.id fields=c.id,FROM_UNIXTIME(c.create_time) as create_time,a.username,b.title,c.recomment_time page=$page order = c.id desc} <tr> <td></td> <td>{$item['username']}</td> <td>{$item['title']}</td> <td>{$item['create_time']}</td> <td> <a href="{url:/plugins/system_comment_edit/id/$item[id]}"><img class="operator" src="{skin:images/admin/icon_check.gif}" alt="查看" /></a> <a href="javascript:void(0)" onclick="delModel({link:'{url:/plugins/system_comment_del/id/$item[id]}'})"><img class="operator" src="{skin:images/admin/icon_del.gif}" alt="刪除" /></a> </td> </tr> {/query} </tbody> </table> </div> {$query->getPageBar()} </form> ~~~ 后臺管理頁面，評論詳情：system_comment_edit.html ~~~ <div class="headbar"> <div class="position"><span>文章</span><span>></span><span>查看評論</span></div> <div class="operating"> <a href="{url:/plugins/system_comment_list}"><button class="operating_btn" type="button"><span class="return">返回</span></button></a> </div> </div> <div class="content_box"> <div class="content form_content"> <form action="{url:/plugins/system_comment_update}" method="post" name="comment_edit"> <input type="hidden" value="{$comment['id']}" name="id" /> <table class="form_table"> <colgroup> <col width="150px" /> <col /> </colgroup> <tr> <th>評論人：</th> <td>{$comment['username']}</td> </tr> <tr> <th>評論時間：</th><td>{$comment['create_time']}</td> </tr> <tr> <th>評論文章：</th><td>{$comment['title']}</td> </tr> <tr> <th>評論內容：</th><td>{$comment['content']}</td> </tr> <tr> <th>回復評論：</th> <td><textarea class='normal' name='recontents'>{$comment['recontents']}</textarea></td> </tr> <tr> <th></th> <td> <button type='submit' class='submit'><span>確定</span></button> </td> </tr> </table> </form> </div> </div> ~~~ 評論列表頁：  評論詳情頁面：  ## 三、前臺功能 找到site\article，加入以下代碼，用于顯示評論 ~~~ <div class="comment_list box"> {set:$where="c.aid=".$this->articleRow['id'];} {set:$page= (isset($_GET['page'])&&(intval($_GET['page'])>0))?intval($_GET['page']):1;} {query: name=article_comment as c join=left join user as a on c.uid eq a.id fields=c.id,c.content,FROM_UNIXTIME(c.create_time) as create_time,a.username,c.recomment_time,FROM_UNIXTIME(c.recomment_time) as reply_time,c.recontents page=$page pagesize=3 where=$where order = c.id desc} <div class="item"> <div class="user"> <div class="ico"><img src="{webroot:<%=head_ico%>}" width="70px" height="70px" onerror="this.src='{skin:images/front/user_ico.gif}'" /></div> <span class="blue">{$item['username']}</span> </div> <dl class="desc gray"> <p> <img src="{skin:images/front/comm.gif}" width="16px" height="17px" /> <b>評論內容：</b><span class="f_r">{$item['create_time']}</span> </p> <p class="indent">{$item['content']}</p> {if:$item['recomment_time']>0} <hr /> <p class="bg_gray"><img src="{skin:images/front/answer.gif}" width="16px" height="17px" /> <b class="orange">回復：</b> <span class="f_r">{$item['reply_time']}</span></p> <p class="indent bg_gray">{$item['recontents']}</p> {/if} </dl> </div> {/query} {$query->getPageBar()} </div> <div class="wrap_box"> <form method="post" action="{url:/site/article_comment_add}"> <input type="hidden" name="aid" value="{$this->articleRow['id']}" /> <table class="form_table f_l"> <tr> <th>評論內容：</th><td valign="top"><textarea name="content" id="content"></textarea></td> </tr> <tr><td></td><td><label class="btn"><input type="submit" value="評論" /></label></td></tr> </table> </form> </div> ~~~  打開site.php，加入以下代碼 ~~~ public function article_comment_add() { if(!isset($this->user['user_id']) || !$this->user['user_id']) { IError::show(403,"未登錄用戶不能評論"); } if(!IReq::get('aid')) { IError::show(403,"傳遞的參數不完整"); } if(trim(IReq::get('content'))=="") { IError::show(403,"評論必須輸入"); } $aid = IFilter::act(IReq::get('aid'),'int'); $data = array( 'content' => IFilter::act(IReq::get("content")), 'create_time' => time(), 'aid'=>$aid, 'uid'=>$this->user['user_id'], ); $tb_comment = new IModel("article_comment"); $tb_comment->setData($data); $re = $tb_comment->add(); if($re) { $this->redirect("/site/article_detail/id/".$aid); } else { IError::show(403,"評論失敗"); } } ~~~ 以下代碼用于實現評論提交功能。 ### 后記 以上只是舉了一個例子說明如何做一個插件，還有前臺的視圖和控制器的代碼實現，但就目前而言，iwebShop的插件還是比較適合做那些沒界面的功能，或是在線留言等這些js控件的前端功能，一旦前臺界面有交互，還是用非插件的模式實現比較方便點，每個工具都有優缺點，能實現功能的就是好工具 >[warning]如有不明白的地方，留言或是加入我們?“三眾技術QQ交流群”一起討論 ## 關于我們 >[danger][三眾科技](http://www.sunzoon.com)資訊平臺——大道至簡，悅你所閱！ >本教程由[三眾簡悅](http://it.sunzoon.com)原創，轉載請注明出處，作者：bobball，由bobo整理成看云書籍 三眾技術交流群：**543102562** 歡迎大家加入我們，共同討論IT，互聯網技術。同時可以掃描下面的二維碼關注我們，謝謝！