织梦cms5.5图集实现上一图集下一图集

织梦cms5.5图集实现上一图集下一图集？在织梦cms可以用 {dede:prenext get='nextimg'/}　{dede:prenext get='preimg'/}　可以显示图片的，可是我想要的功能是做一个图片幻灯类似于新浪的那种。就是“上一图集”“下一图集”的样子。

织梦不带有这个功能，需要我们自己来扩展。

打开include/arc.archives.class.php文件，修改GetPreNext() ，以下区域红色代码是新增加的。

//获取上一篇，下一篇链接
    function GetPreNext($gtype='')
    {
        $rs = '';
        if(count($this->PreNext)<2)
        {
            $aid = $this->ArcID;
            $preR = $this->dsql->GetOne("Select id From `q_arctiny` where id<$aid And arcrank>-1 And typeid='{$this->Fields['typeid']}' order by id desc");
            $nextR = $this->dsql->GetOne("Select id From `q_arctiny` where id>$aid And arcrank>-1 And typeid='{$this->Fields['typeid']}' order by id asc");
            $next = (is_array($nextR) ? " where arc.id={$nextR['id']} " : ' where 1>2 ');
            $pre = (is_array($preR) ? " where arc.id={$preR['id']} " : ' where 1>2 ');
            $query = "Select arc.id,arc.title,arc.shorttitle,arc.typeid,arc.ismake,arc.senddate,arc.arcrank,arc.money,arc.filename,arc.litpic,
                        t.typedir,t.typename,t.namerule,t.namerule2,t.ispart,t.moresite,t.siteurl,t.sitepath
                        from `q_archives` arc left join q_arctype t on arc.typeid=t.id ";
            $nextRow = $this->dsql->GetOne($query.$next);
            $preRow = $this->dsql->GetOne($query.$pre);
            if(is_array($preRow))
            {
                $mlink = GetFileUrl($preRow['id'],$preRow['typeid'],$preRow['senddate'],$preRow['title'],$preRow['ismake'],$preRow['arcrank'],
                $preRow['namerule'],$preRow['typedir'],$preRow['money'],$preRow['filename'],$preRow['moresite'],$preRow['siteurl'],$preRow['sitepath']);
                $this->PreNext['pre'] = "上一篇：<a href='$mlink'>{$preRow['title']}</a> ";
                $this->PreNext['preimg'] = "<a href='$mlink'><img src=/"{$preRow['litpic']}/" alt=/"{$preRow['title']}/"/></a> ";
                $this->PreNext['pretj'] = "<a href='$mlink'><<上一图集</a> ";
            }
            else
            {
                $this->PreNext['pre'] = "上一篇：没有了 ";
                $this->PreNext['preimg'] ="<img src=/"/templets/default/images/nophoto.jpg/" alt=/"对不起，没有上一图集了！/"/>";
                $this->PreNext['pretj'] = "<a href='$mlink'>没有了</a> ";
            }
            if(is_array($nextRow))
            {
                $mlink = GetFileUrl($nextRow['id'],$nextRow['typeid'],$nextRow['senddate'],$nextRow['title'],$nextRow['ismake'],$nextRow['arcrank'],
                $nextRow['namerule'],$nextRow['typedir'],$nextRow['money'],$nextRow['filename'],$nextRow['moresite'],$nextRow['siteurl'],$nextRow['sitepath']);
                $this->PreNext['next'] = "下一篇：<a href='$mlink'>{$nextRow['title']}</a> ";
                $this->PreNext['nextimg'] = "<a href='$mlink'><img src=/"{$nextRow['litpic']}/" alt=/"{$nextRow['title']}/"/></a> ";
                $this->PreNext['nexttj'] = "<a href='$mlink'>下一图集>></a> ";
            }
            else
            {
                $this->PreNext['next'] = "下一篇：没有了 ";
                $this->PreNext['nextimg'] ="<a href='javascript:void(0)' alt=/"/"><img src=/"/templets/default/images/nophoto.jpg/" alt=/"对不起，没有下一图集了！/"/></a>";
                $this->PreNext['nexttj'] = "<a href='$mlink'>没有了</a> ";
            }
        }
        if($gtype=='pre')
        {
            $rs = $this->PreNext['pre'];
        }
        else if($gtype=='preimg'){

            $rs = $this->PreNext['preimg'];
        }
        else if($gtype=='pretj'){

            $rs = $this->PreNext['pretj'];
        }
        else if($gtype=='next')
        {
            $rs = $this->PreNext['next'];
        }
        else if($gtype=='nextimg'){

            $rs = $this->PreNext['nextimg'];
        }
        else if($gtype=='nexttj'){

            $rs = $this->PreNext['nexttj'];
        }
        else
        {
            $rs = $this->PreNext['pre']."   ".$this->PreNext['next'];
        }
        return $rs;
    }