digg分页

jackiesun 发表于 2011-2-10 14:47:03

本帖最后由 jackiesun 于 2011-3-21 16:47 编辑

发现有朋友在使用的时候提到无法使用，现发上源码。

分页效果与digg差不多。使用方法：

function index()

{

//加载分页类，自已写的

$this->load->library('pager');

$list = $this->pager->init('users',1)->ar();

//取得地址上的第三个参数

$current = $this->uri->segment(3);

$this->load->view('welcome_message',array(

'query'=>$list->query,

'current'=>$current

)

);

}

只有一个文件
Pager.php 放到 libraries下

<?phpif ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* 分页类实现 digg分页效果
*
* @package
libraries
* @author
轻飘如羽 [yiiphp@gmail.com]
* @copyright
Copyright (c) 2011
* @license
http://codeigniter.com/user_guide/license.html
* @link
http://www.fowcms.com
使用方法：
控制器中代码：controllers目录

//加载分页类，自已写的

$this->load->library('pager');

$list = $this->pager->init('users',5)->ar();

//取得地址上的第三个参数

$current = $this->uri->segment(3);

$this->load->view('welcome_message',array(

'query'=>$list->query,

'current'=>$current

)

);

视图中代码。views目录
$this->pager->digg('welcome/index',$current);
*/

class Pager {

public $length = 5;

public $prevLabel = '';

public $nextLabel = '';

public $first = 0; //第一页

public $slider = 3;

public $perpage = 3;

public $query;

public $table;

public $count;

public $obj;

public $current;

/*function __construct($params=array()){

} */

function init($table='users',$perpage=2,$segment=3){

$this->table = $table;

//取得ci超级对象

$this->obj =& get_instance();

//加载数据库类

$this->obj->load->database();

//取得地址上的第三个参数

$this->current = $this->obj->uri->segment($segment);

$this->perpage = $perpage;

return $this;

}

//使用AR

function ar(){

$this->count = $this->obj->db->count_all($this->table);

$this->query = $this->obj->db->get($this->table, $this->perpage,$this->perpage*$this->current);

return $this;

}

//使用自己写的SQL

function sql($query,$count){

$this->count = $count;

$this->query = $query;

return $this;

}

/**

* 读取配置信息，或修改配置信息

*

* @param 链接$url

* @param 当前页 $current

* @param 总页数 $all_count

* @param 每页显示数 $perpage

* @return unknown

*/

function digg($url,$current){

$perpage = $this->perpage;

$last = ceil($this->count/$perpage);

$prev = $current - 1; //上一页

$next = $current + 1; //下一页

$output = "<ul class='pagenav'>";

if ($current == $this->first) {

   $output .= "<li class=\"disabled\">« ".$this->prevLabel."</li>\n";

} else {

   $output .= "<li><a href='"._url($url)."'>«".$this->prevLabel."</a></li>\n";

}

$mid = intval($this->length / 2);

if ($current < $this->first) {

   $current = $this->first;

}

if ($current > $last) {

   $current = $last;

}

$begin = $current - $mid;

if ($begin < $this->first) { $begin = $this->first; }

$end = $begin + $this->length - 1;

if ($end >= $last) {

   $end = $last-1;

   $begin = $end - $this->length + 1;

   if ($begin < $this->first) { $begin = $this->first; }

}

if ($begin > $this->first) {

   for ($i = $this->first; $i < $this->first + $this->slider && $i < $begin; $i++) {

         $page= $i;

         $in = $i + 1;

         $urls = _url($url,array('page'=>$page));

         $output .= "<li><a href=\"{$urls}\">{$in}</a></li>\n";

   }

   if ($i < $begin) {

         $output .= "<li class=\"none\">...</li>\n";

   }

}

for ($i = $begin; $i <= $end ; $i++) {

   $page = $i;

   $in = $i + 1;

   if ($i == $current) {

         $output .= "<li class=\"current\">{$in}</li>\n";

   } else {

         $urls = _url($url,array('page'=>$page));

         $output .= "<li><a href=\"{$urls}\">{$in}</a></li>\n";

   }

}

if ($last - $end > $this->slider) {

   $output .= "<li class=\"none\">...</li>\n";

   $end = $last - $this->slider;

}

for ($i = $end + 1; $i < $last; $i++) {

   $page = $i;

   $in = $i + 1;

   $urls = _url($url,array('page'=>$page));

   $output .= "<li><a href=\"{$urls}\">{$in}</a></li>\n";

}

if ($current == $last-1) {

   $output .= "<li class=\"disabled\">".$this->nextLabel." »</li>\n";

} else {

   $page = $last-1;

   $urls = _url($url,array('page'=>$page));

   $output .= "<li><a href=\"{$urls}\">".$this->nextLabel." »</a></li>\n";

}

$output .= "</ul>\n";

echo $output;

}

}
//修改该函数可以放到其他框架使用
function _url($url,$array = array()){

return site_url($url.'/'.$array['page']);
}

css

ul.pagenav {
   font-size: 12px;
   font-weight: bold;
   list-style: none;
   margin: 0px;
   padding: 0px;
}

.pagenav li {
   list-style: none;
   background-color: #fff;
   margin: 0px;
   display: block;
   float: left;
   margin-left: 2px;
   margin-right: 2px;
}

.pagenav li.disabled {
   border: 1px solid #DDDDDD;
   padding: 2px 6px 2px 6px;
   color: #ccc;
}

.pagenav li.current {
   border: 1px solid #2E6AB1;
   padding: 2px 6px 2px 6px;
   background-color: #2E6AB1;
   color: #fff;
}

.pagenav li.none {
   border: 1px none;
   padding: 2px 6px 2px 6px;
}

.pagenav li a {
   border: 1px solid #9AAFE5;
   padding: 2px 6px 2px 6px;
   display: block;
   text-decoration: none;
   color: #105CB6;
}

.pagenav li a:hover {
   border: 1px solid #2E6AB1;
   color: #000;
}

gzwazz 发表于 2011-3-4 17:51:25

有显示效果,但是点击的页码的时候不能显示内容.希望楼主贴出循环内容的代码(views)

gzwazz 发表于 2011-3-4 17:52:54

<? foreach($query->result() as $row):?>
<tr>
<td><?=$row->title?></td>
<td><?=$row->author?></td>
<td><?=$row->sendtime?></td>
</tr>
<? endforeach;?>
<tr>
<td><?echo $this->pager->digg('admin/news/index',$current);?></td>
为什么不管用呢?

jackiesun 发表于 2011-3-21 16:46:18

本地测试过了，没有问题。
PHP写的规范一点
<?php?>

hbhero 发表于 2011-4-19 15:19:20

A PHP Error was encountered
Severity: Notice

Message: Undefined index: page

Filename: libraries/pager.php

Line Number: 266

为什么我点除了第一页其他也回报这个错误

jark_mi 发表于 2011-4-20 13:06:58

学习中,,支持了

hbhero 发表于 2011-4-20 13:31:27

如何倒叙输出呢

smartweb 发表于 2011-6-13 14:14:46

为什么我的
...这些符号没有呢？

wuyichao36 发表于 2012-6-12 11:27:42

为什么会在2.1版本里面我用get_where就不可以了呢？加个条件就不行啊

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