自定义功能类实现分页

Posted on Posted in thinkphp
Tips: 本文创建于2014年5月16日,已超过 2 年,内容或图片可能已经失效!

自定义功能类实现分页

Components/Cart.class.php

[code lang="php"]
<?php
namespace Components;
/**
* namespace名称与目录名相同,作用是调用自动加载
* @author honghe
*/
class Cart{
public static $name = '购物车';
}
[/code]

M模块

[code lang="php"]
<?php
namespace Components;

class Page {

private $total; //数据表中总记录数
private $listRows; //每页显示行数
private $limit;
private $uri;
private $pageNum; //页数
private $config = array('header' => "个记录", "prev" => "上一页", "next" => "下一页", "first" => "首 页", "last" => "尾 页");
private $listNum = 8;

/*
* $total
* $listRows
*/

public function __construct($total, $listRows = 10, $pa = "") {
$this->total = $total;
$this->listRows = $listRows;
$this->uri = $this->getUri($pa);
$this->page = !empty($_GET["page"]) ? $_GET["page"] : 1;
$this->pageNum = ceil($this->total / $this->listRows);
$this->limit = $this->setLimit();
}

private function setLimit() {
return "Limit " . ($this->page - 1) * $this->listRows . ", {$this->listRows}";
}

private function getUri($pa) {
$url = $_SERVER["REQUEST_URI"] . (strpos($_SERVER["REQUEST_URI"], '?') ? '' : "?") . $pa;
$parse = parse_url($url);

if (isset($parse["query"])) {
parse_str($parse['query'], $params);
unset($params["page"]);
$url = $parse['path'] . '?' . http_build_query($params);
}

return $url;
}

function __get($args) {
if ($args == "limit")
return $this->limit;
else
return null;
}

private function start() {
if ($this->total == 0)
return 0;
else
return ($this->page - 1) * $this->listRows + 1;
}

private function end() {
return min($this->page * $this->listRows, $this->total);
}

private function first() {
$html = "";
if ($this->page == 1)
$html.='';
else
$html.="&nbsp;&nbsp;<a href='{$this->uri}&page=1'>{$this->config["first"]}</a>&nbsp;&nbsp;";

return $html;
}

private function prev() {
$html = "";
if ($this->page == 1)
$html.='';
else
$html.="&nbsp;&nbsp;<a href='{$this->uri}&page=" . ($this->page - 1) . "'>{$this->config["prev"]}</a>&nbsp;&nbsp;";

return $html;
}

private function pageList() {
$linkPage = "";

$inum = floor($this->listNum / 2);

for ($i = $inum; $i >= 1; $i--) {
$page = $this->page - $i;

if ($page < 1)
continue;

$linkPage.="&nbsp;<a href='{$this->uri}&page={$page}'>{$page}</a>&nbsp;";
}

$linkPage.="&nbsp;{$this->page}&nbsp;";

for ($i = 1; $i <= $inum; $i++) {
$page = $this->page + $i;
if ($page <= $this->pageNum)
$linkPage.="&nbsp;<a href='{$this->uri}&page={$page}'>{$page}</a>&nbsp;";
else
break;
}

return $linkPage;
}

private function next() {
$html = "";
if ($this->page == $this->pageNum)
$html.='';
else
$html.="&nbsp;&nbsp;<a href='{$this->uri}&page=" . ($this->page + 1) . "'>{$this->config["next"]}</a>&nbsp;&nbsp;";

return $html;
}

private function last() {
$html = "";
if ($this->page == $this->pageNum)
$html.='';
else
$html.="&nbsp;&nbsp;<a href='{$this->uri}&page=" . ($this->pageNum) . "'>{$this->config["last"]}</a>&nbsp;&nbsp;";

return $html;
}

private function goPage() {
return '&nbsp;&nbsp;<input type="text" onkeydown="javascript:if(event.keyCode==13){var page=(this.value>' . $this->pageNum . ')?' . $this->pageNum . ':this.value;location=\'' . $this->uri . '&page=\'+page+\'\'}" value="' . $this->page . '" style="width:25px"><input type="button" value="GO" onclick="javascript:var page=(this.previousSibling.value>' . $this->pageNum . ')?' . $this->pageNum . ':this.previousSibling.value;location=\'' . $this->uri . '&page=\'+page+\'\'">&nbsp;&nbsp;';
}

function fpage($display = array(0, 1, 2, 3, 4, 5, 6, 7, 8)) {
$html[0] = "&nbsp;&nbsp;共有<b>{$this->total}</b>{$this->config["header"]}&nbsp;&nbsp;";
$html[1] = "&nbsp;&nbsp;每页显示<b>" . ($this->end() - $this->start() + 1) . "</b>条,本页<b>{$this->start()}-{$this->end()}</b>条&nbsp;&nbsp;";
$html[2] = "&nbsp;&nbsp;<b>{$this->page}/{$this->pageNum}</b>页&nbsp;&nbsp;";

$html[3] = $this->first();
$html[4] = $this->prev();
$html[5] = $this->pageList();
$html[6] = $this->next();
$html[7] = $this->last();
$html[8] = $this->goPage();
$fpage = '';
foreach ($display as $index) {
$fpage.=$html[$index];
}

return $fpage;
}

}

[/code]

V模块

[code lang="php"]
<td colspan="20" style="text-align: center;">{$pagelist}</td>
[/code]

C模块

[code lang="php"]
public function show() {
$obj = D ( 'Goods' );
// 调用自己的工具类
// 获得信息总条数量
$total = $obj->count ();
$per = 7;
// 实例化分页类对象
$page = new \Components\Page ( $total, $per );
// 拼装sql语句
$sql = "select * from sw_goods order by goods_id desc " . $page->limit;
$info = $obj->query ( $sql );
// 页码列表
$pagelist = $page->fpage ( array (
3,
4,
5,
6,
7,
8
) ); // 此数字数字为样式
$this->assign ( 'pagelist', $pagelist );
// $info = $obj->order('goods_id desc')->select ();
$this->assign ( 'info', $info );
$this->display ();
}
[/code]

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