Ecmall系统自带的分页功能

在Ecmall的二次开发中，分页是必不可少的。这个系统已经自带了分页功能，下面来看看如何使用这个分页。

下面是一个自定义的类，用于查看订单的详细情况。关键在于get_order_data()这个方法，分页的使用也在这个方法的内部了。应该有的注释都有了，应该会比较容易懂，我不就多说了。

<?php

define(‘NUM_PER_PAGE‘, 15);        // 每页显示数量

class NowaMagicApp extends MallbaseApp

{

    public function index()

    {

        /* 分页信息 */

        $page = $this->_get_page(NUM_PER_PAGE);

        $page[‘item_count‘] = $stats[‘total_count‘];

        $this->_format_page($page);

        $this->assign(‘page_info‘, $page);
$this->display(‘gorder.index.html‘);

    }
/* 订单记录 */

    function orderslog()

    {

        $goods_id = empty($_GET[‘id‘]) ? 0 : intval($_GET[‘id‘]);

        if (!$goods_id)

        {

            $this->show_warning(‘Hacking Attempt‘);

            return;

        }
$data = $this -> get_order_data($goods_id);
if ($data === false)

        {

            return;

        }
$this->assign(‘order‘, $data);
$this->display(‘gorder.index.html‘);
}
function get_order_data($goods_id)

    {

        //clean_cache();

        $cache_server =& cache_server();

        //print_r($cache_server);

        $key = ‘order_‘ . $goods_id;

        //$key = $this->_get_cache_id();

        $r = $cache_server->get($key);

        $cached = true;
$db = &db();
$sql = "select count(*)

                from shop_order a, shop_order_extm b, shop_order_goods c

                where a.order_id = b.order_id and b.order_id = c.order_id

                and c.goods_id = ‘".$goods_id."‘

                and a.status != ‘11‘

                and a.status != ‘0‘

                and a.status != ‘20‘

                order by a.add_time desc ";

        //echo $sql;

        $num = $db -> getone($sql);                //求出总记录数

        $page = $this->_get_page(NUM_PER_PAGE);    //每页显示的条数，默认是10条

        $page[‘item_count‘] = $num;                // 返回一个数组$page，$page[‘limit‘]=0，10

        $this->_format_page($page);                //格式化分页
$sql2 = "select a.order_id, a.buyer_name, a.add_time, a.status, b.phone_tel, b.phone_mob, b.consignee, c.price, c.quantity, c.goods_id

                from shop_order a, shop_order_extm b, shop_order_goods c

                where a.order_id = b.order_id and b.order_id = c.order_id

                and c.goods_id = ‘".$goods_id."‘

                and a.status != ‘11‘

                and a.status != ‘0‘

                and a.status != ‘20‘

                order by a.add_time desc limit ".$page[‘limit‘];
$result = $db -> query($sql2);
$this -> assign(‘page_info‘,$page);     //向模板页传递页数

        $this -> assign(‘que‘,$sql2);     //向模板页传递查询结果
//$r = array();

        while($myrow = $db -> fetch_array($result))

        {

            $r[] = $myrow;

        }
$cache_server->set($key, $r, 1);

        return $r;

    }
}
?>

简化如下：

Define("LIMIT",10);

$goods_mod = & db(‘test‘);//构建实体模型（操作表）

      $count = ‘select count(id) from test‘;

      $num = $goods_mod -> getone($count);//求出总记录数

$page = $this->_get_page(LIMIT);//每页显示的条数，默认是10条

      $page[‘item_count‘] = $num;// 返回一个数组$page，$page[‘limit‘]=0，10

      $this->_format_page($page);//格式化分页

      $sql = ‘select id,title,content from test order by id desc limit ‘.$page[‘limit‘];

      $que = $goods_mod -> getAll($sql);//查询记录

      $this -> assign(‘page_info‘,$page); //向模板页传递页数

      $this -> assign(‘que‘,$que); //向模板页传递查询结果

Ecmall系统自带的分页功能,布布扣,bubuko.com