>[danger]上节课我们讲了如何开发插件,这一节课我们用一个实例来讲解如何开发一个评论插件 有些做过其他系统的插件开发的同学,再来学iWebShop的插件开发,很容易就上手,有些也可能发现iWebShop插件开发时,对前端页面的控制目前支持得还不是很灵活。因此,我做这个评论插件,我就采用以下方法开发: 后端维护的功能,用插件实现,前端评论,使用我们之前学的模板开发的方式来做 ## 一、建立插件 在插件目录下增加“comment”目录,创建如下三个文件: ![](http://it.sunzoon.com/wp-content/uploads/2016/08/20160819193459.png) comment.php中加入以下代码: ~~~ class comment extends pluginBase{ //【必填】插件中文名称 public static function name() { return "三众科技评论插件"; } //【必填】插件的功能简介 public static function description() { return "文章评论插件"; } //安装插件代码 public static function install() { $commentDB = new IModel('article_comment');//表名article_comment //判断表是否存在 if($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" => "评论内容"), "create_time" => array("type" => "int(11) unsigned","default" => "0","comment" => "评论时间"), "recontents" => array("type" => "text","comment" => "回复内容"), "recomment_time" => array("type" => "int(11) unsigned","default" => "0","comment" => "回复时间"), "aid" => array("type" => "int(11) unsigned","default" => "0","comment" => "文章id"), "uid" => array("type" => "int(11) unsigned","default" => "0","comment" => "用户id") ), "index" => array("primary" => "id","key" => "aid,uid"), ); $commentDB->setData($data); //开始创建表 return $commentDB->createTable(); } //卸载插件代码 public static function uninstall() { $commentDB = new IModel('article_comment'); //删除表 return $commentDB->dropTable(); } //插件参数配置 public static function configName() { //在本拿了中无参数配置 } } ~~~ 之后在后台中就可以安装插件了 ![](http://it.sunzoon.com/wp-content/uploads/2016/08/20160819114735-1024x325.png)  以上为每个插件必须的,如不需要操作数据库的,可以不用写数据库代码。 ## 二、管理后台功能维护 功能注册,comment.php中加入以下代码: ~~~ public function reg() { //后台插件管理中增加该插件链接 plugin::reg("onSystemMenuCreate",function(){ $link = "/plugins/system_comment_list"; Menu::$menu["插件"]["插件管理"][$link] = $this->name(); }); //后台评论列表的链接 plugin::reg("onBeforeCreateAction@plugins@system_comment_list",function(){ self::controller()->system_comment_list = function(){$this->comment_list();}; }); //后台评论详情的链接 plugin::reg("onBeforeCreateAction@plugins@system_comment_edit",function(){ self::controller()->system_comment_edit = function(){$this->comment_edit();}; }); //后台评论回复的链接 plugin::reg("onBeforeCreateAction@plugins@system_comment_update",function(){ self::controller()->system_comment_update = function(){$this->comment_update();}; }); //后台评论删除的链接 plugin::reg("onBeforeCreateAction@plugins@system_comment_del",function(){ self::controller()->system_comment_del = function(){$this->comment_del();}; }); } ~~~ 功能实现,comment.php中加入以下代码: ~~~ 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))); } //回复评论 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(); //保存数据库 $commentDB = new IModel('article_comment'); $commentDB->setData($data); $commentDB->update('id = '.$id); $this->redirect('system_comment_list'); } //回复删除 public function comment_del() { $commentDB = new IModel('article_comment'); $id = IFilter::act(IReq::get('id')); $commentDB->del('id = '.$id); $this->redirect('system_comment_list'); } ~~~ 后台管理页面,评论列表:system_comment_list.html ~~~ <div class="headbar"> <div class="position"><span>文章</span><span>></span><span>评论管理</span></div> </div> <form action="{url:/plugins/system_comment_del}" method="post" name="comment_list" onsubmit="return checkboxCheck('check[]','尚未选中任何记录!')"> <div class="content"> <table class="list_table"> <colgroup> <col width="10px" /> <col width="100px" /> <col width="220px" /> <col width="75px" /> <col width="95px" /> </colgroup> <thead> <tr> <th></th> <th>评论人</th> <th>评论文章</th> <th>评论时间</th> <th>操作</th> </tr> </thead> <tbody> {set:$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/$item[id]}'})"><img class="operator" src="{skin:images/admin/icon_del.gif}" alt="删除" /></a> </td> </tr> {/query} </tbody> </table> </div> {$query->getPageBar()} </form> ~~~ 后台管理页面,评论详情:system_comment_edit.html ~~~ <div class="headbar"> <div class="position"><span>文章</span><span>></span><span>查看评论</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="{$comment['id']}" name="id" /> <table class="form_table"> <colgroup> <col width="150px" /> <col /> </colgroup> <tr> <th>评论人:</th> <td>{$comment['username']}</td> </tr> <tr> <th>评论时间:</th><td>{$comment['create_time']}</td> </tr> <tr> <th>评论文章:</th><td>{$comment['title']}</td> </tr> <tr> <th>评论内容:</th><td>{$comment['content']}</td> </tr> <tr> <th>回复评论:</th> <td><textarea class='normal' name='recontents'>{$comment['recontents']}</textarea></td> </tr> <tr> <th></th> <td> <button type='submit' class='submit'><span>确定</span></button> </td> </tr> </table> </form> </div> </div> ~~~ 评论列表页: ![](http://it.sunzoon.com/wp-content/uploads/2016/08/20160819201409.png) 评论详情页面: ![](http://it.sunzoon.com/wp-content/uploads/2016/08/20160819201620.png) ## 三、前台功能 找到site\article,加入以下代码,用于显示评论 ~~~ <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">{$item['username']}</span> </div> <dl class="desc gray"> <p> <img src="{skin:images/front/comm.gif}" width="16px" height="17px" /> <b>评论内容:</b><span class="f_r">{$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">回复:</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>评论内容:</th><td valign="top"><textarea name="content" id="content"></textarea></td> </tr> <tr><td></td><td><label class="btn"><input type="submit" value="评论" /></label></td></tr> </table> </form> </div> ~~~ ![](http://it.sunzoon.com/wp-content/uploads/2016/08/20160819202116.png) 打开site.php,加入以下代码 ~~~ public function article_comment_add() { if(!isset($this->user['user_id']) || !$this->user['user_id']) { IError::show(403,"未登录用户不能评论"); } if(!IReq::get('aid')) { IError::show(403,"传递的参数不完整"); } if(trim(IReq::get('content'))=="") { IError::show(403,"评论必须输入"); } $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,"评论失败"); } } ~~~ 以下代码用于实现评论提交功能。 ### 后记 以上只是举了一个例子说明如何做一个插件,还有前台的视图和控制器的代码实现,但就目前而言,iwebShop的插件还是比较适合做那些没界面的功能,或是在线留言等这些js控件的前端功能,一旦前台界面有交互,还是用非插件的模式实现比较方便点,每个工具都有优缺点,能实现功能的就是好工具 >[warning]如有不明白的地方,留言或是加入我们 “三众技术QQ交流群”一起讨论 ## 关于我们 >[danger][三众科技](http://www.sunzoon.com)资讯平台——大道至简,悦你所阅! >本教程由[三众简悦](http://it.sunzoon.com)原创,转载请注明出处,作者:bobball,由bobo整理成看云书籍 三众技术交流群:**543102562** 欢迎大家加入我们,共同讨论IT,互联网技术。同时可以扫描下面的二维码关注我们,谢谢! ![三众科技服务号](http://it.sunzoon.com/wp-content/uploads/2016/06/qrcode_for_gh_401d25b05314_344.jpg)