thinkphp增加每页显示条数的方法

时间：2020-05-21 09:17

需求多加一个类似phpmyadmin一样的每页显示条数查了好久都没找到

看到thinkphp 分页类是html拼接的很low 但是方便了我修改新增需求

在原生分页类基础上新定义了一个num变量

show方法返回的时候 thinkphp拼接html的地方新加了一段选择条数的代码

return "<ul class='am-pagination am-pagination-right'>{$page_str}</ul>
		<div class='am-dropdown  am-dropdown-up' data-am-dropdown>
			<button class='am-btn am-btn-primary am-dropdown-toggle' data-am-dropdown-toggle>显示条数 <span class='am-icon-caret-up'></span></button>
			<ul class='am-dropdown-content'>
				<li><a href='".$this->urlNum(10,1)."'>10</a></li>
				<li><a href='".$this->urlNum(30,1)."'>30</a></li>
				<li><a href='".$this->urlNum(50,1)."'>50</a></li>
			</ul>
		</div>";

然后新加的urlNum方法是这样：

private function urlNum($num,$page){
    $str = str_replace(urlencode('[PAGE]'), $page, $this->url);
    return str_replace(urlencode('[NUM]'), $num,  $str);
}

开始的时候由于page这个变量 thinkphp会先变一个转码的后面才替换

而且page=1的时候 url里是不显示的但是还有这个参数

导致num这个变量老是搞得url 很不稳定经常叠加

后面只有做了一个小牺牲(选定每页显示条数的时候 url page即使为1 也会加上)

不过这并没有什么影响

整个代码分页类就是这样：

<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2014 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: 麦当苗儿 <zuojiazi@vip.qq.com> <http://www.zjzit.cn>
// +----------------------------------------------------------------------
namespace Think;

class Page{
    public $firstRow; // 起始行数
    public $listRows; // 列表每页显示行数
    public $parameter; // 分页跳转时要带的参数
    public $totalRows; // 总行数
    public $totalPages; // 分页总页面数
    public $rollPage   = 11;// 分页栏每页显示的页数
	public $lastSuffix = true; // 最后一页是否显示总页数

    private $p       = 'p'; //分页参数名
    private $num       = 'num'; //分页参数名
    private $url     = ''; //当前链接URL
    private $nowPage = 1;
	// 分页显示定制
    private $config  = array(
        'header' => '<span class="rows">共 %TOTAL_ROW% 条记录</span>',
        'prev'   => '&laquo;',
        'next'   => '&raquo;',
        'first'  => '1...',
        'last'   => '...%TOTAL_PAGE%',
        'theme'  => '%HEADER% %FIRST% %UP_PAGE% %LINK_PAGE% %DOWN_PAGE% %END%',
    );

    /**
     * 架构函数
     * @param array $totalRows  总的记录数
     * @param array $listRows  每页显示记录数
     * @param array $parameter  分页跳转的参数
     */
    public function __construct($totalRows, $listRows=20, $parameter = array()) {
        C('VAR_PAGE') && $this->p = C('VAR_PAGE'); //设置分页参数名称
        /* 基础设置 */
        $this->totalRows  = $totalRows; //设置总记录数
        $this->listRows   = $listRows;  //设置每页显示行数
        $this->parameter  = empty($parameter) ? $_GET : $parameter;
        $this->nowPage    = empty($_GET[$this->p]) ? 1 : intval($_GET[$this->p]);
        $this->nowPage    = $this->nowPage>0 ? $this->nowPage : 1;
        $this->firstRow   = $this->listRows * ($this->nowPage - 1);
    }

    /**
     * 定制分页链接设置
     * @param string $name  设置名称
     * @param string $value 设置值
     */
    public function setConfig($name,$value) {
        if(isset($this->config[$name])) {
            $this->config[$name] = $value;
        }
    }

    /**
     * 生成链接URL
     * @param  integer $page 页码
     * @return string
     */
    private function url($page){
        // return str_replace(urlencode('[PAGE]'), $page, $this->url);
		$num = $_GET['num'] ? $_GET['num'] : '10';
        $str = str_replace(urlencode('[NUM]'), $num,   $this->url);
        return str_replace(urlencode('[PAGE]'), $page, $str);
    }
	
	private function urlNum($num,$page){
        $str = str_replace(urlencode('[PAGE]'), $page, $this->url);
        return str_replace(urlencode('[NUM]'), $num,  $str);
    }
    /**
     * 组装分页链接
     * @return string
     */
    public function show() {
        if(0 == $this->totalRows) return '';

        /* 生成URL */
		// echo $this->num;die;
        $this->parameter[$this->p] = '[PAGE]'; 
		// $num = empty($_GET['num']) ? '20' : '';
        $this->parameter[$this->num] = '[NUM]';
        $this->url = U(ACTION_NAME, $this->parameter);
        /* 计算分页信息 */
        $this->totalPages = ceil($this->totalRows / $this->listRows); //总页数
        if(!empty($this->totalPages) && $this->nowPage > $this->totalPages) {
            $this->nowPage = $this->totalPages;
        }

        /* 计算分页临时变量 */
        $now_cool_page      = $this->rollPage/2;
		$now_cool_page_ceil = ceil($now_cool_page);
		$this->lastSuffix && $this->config['last'] = $this->totalPages;

        //上一页
        $up_row  = $this->nowPage - 1;
        $up_page = $up_row > 0 ? '<li><a class="prev" href="' . $this->url($up_row) . '">' . $this->config['prev'] . '</a></li>' : '';

        //下一页
        $down_row  = $this->nowPage + 1;
        $down_page = ($down_row <= $this->totalPages) ? '<li><a class="next" href="' . $this->url($down_row) . '">' . $this->config['next'] . '</a></li>' : '';

        //第一页
        $the_first = '';
        if($this->totalPages > $this->rollPage && ($this->nowPage - $now_cool_page) >= 1){
            $the_first = '<li><a class="first" href="' . $this->url(1) . '">' . $this->config['first'] . '</a></li>';
        }

        //最后一页
        $the_end = '';
        if($this->totalPages > $this->rollPage && ($this->nowPage + $now_cool_page) < $this->totalPages){
            $the_end = '<li><a class="end" href="' . $this->url($this->totalPages) . '">' . $this->config['last'] . '</a></li>';
        }

        //数字连接
        $link_page = "";
        for($i = 1; $i <= $this->rollPage; $i++){
			if(($this->nowPage - $now_cool_page) <= 0 ){
				$page = $i;
			}elseif(($this->nowPage + $now_cool_page - 1) >= $this->totalPages){
				$page = $this->totalPages - $this->rollPage + $i;
			}else{
				$page = $this->nowPage - $now_cool_page_ceil + $i;
			}
            if($page > 0 && $page != $this->nowPage){

                if($page <= $this->totalPages){
                    $link_page .= '<li><a class="num" href="' . $this->url($page) . '">' . $page . '</a></li>';
                }else{
                    break;
                }
            }else{
                if($page > 0 && $this->totalPages != 1){
                    $link_page .= '<li class="am-active"><a href="#">' . $page . '</a></li>';
                }
            }
        }

        //替换分页内容
        $page_str = str_replace(
            array('%HEADER%', '%NOW_PAGE%', '%UP_PAGE%', '%DOWN_PAGE%', '%FIRST%', '%LINK_PAGE%', '%END%', '%TOTAL_ROW%', '%TOTAL_PAGE%'),
            array($this->config['header'], $this->nowPage, $up_page, $down_page, $the_first, $link_page, $the_end, $this->totalRows, $this->totalPages),
            $this->config['theme']);
			return "<ul class='am-pagination am-pagination-right'>{$page_str}</ul>
					<div class='am-dropdown  am-dropdown-up' data-am-dropdown>
						<button class='am-btn am-btn-primary am-dropdown-toggle' data-am-dropdown-toggle>显示条数 <span class='am-icon-caret-up'></span></button>
						<ul class='am-dropdown-content'>
							<li><a href='".$this->urlNum(10,1)."'>10</a></li>
							<li><a href='".$this->urlNum(30,1)."'>30</a></li>
							<li><a href='".$this->urlNum(50,1)."'>50</a></li>
						</ul>
					</div>";
    }
}

效果如下：