1.ci的分页类
<?PHP if(!defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * * An open source application development framework for PHP 4.3.2 or newer * * @package CodeIgniter * @author ExpressionEngine Dev Team * @copyright Copyright (c) 2008 - 2010,EllisLab,Inc. * @license http://codeigniter.com/user_guide/license.html * @link http://codeigniter.com * @since Version 1.0 * @filesource * */ // ------------------------------------------------------------------------ /** * Pagination Class * * @package CodeIgniter * @subpackage Libraries * @category Pagination * @author ExpressionEngine Dev Team * @link http://codeigniter.com/user_guide/libraries/pagination.html */ class CI_Pagination { var $base_url = ''; // The page we are linking to var $total_rows = ''; // Total number of items (database results) var $per_page = 10; // Max number of items you want shown per page var $num_links = 2; // Number of "digit" links to show before/after the currently viewed page var $cur_page = 0; // The current page being viewed var $first_link = '‹ First'; var $next_link = '>'; var $prev_link = '<'; var $last_link = 'Last ›'; var $uri_segment = 3; var $full_tag_open = ''; var $full_tag_close = ''; var $first_tag_open = ''; var $first_tag_close = ''; var $last_tag_open = ''; var $last_tag_close = ''; var $cur_tag_open = '<strong>'; var $cur_tag_close = '</strong>'; var $next_tag_open = ''; var $next_tag_close = ''; var $prev_tag_open = ''; var $prev_tag_close = ''; var $num_tag_open = ''; var $num_tag_close = ''; var $page_query_string = FALSE; var $query_string_segment = 'per_page'; var $use_page_numbers = FALSE; // Use page number for segment instead of offset var $prefix = ''; // A custom prefix added to the path. var $suffix = ''; // A custom suffix added to the path. var $anchor_class = ''; var $display_pages = TRUE; var $first_url = ''; // Alternative URL for the First Page. /** * Constructor * * @access public * @param * array initialization parameters */ function CI_Pagination($params = array()) { if(count($params) > 0) { $this->initialize($params); } log_message('debug',"Pagination Class Initialized"); } // -------------------------------------------------------------------- /** * Initialize Preferences * * @access public * @param * array initialization parameters * @return void */ function initialize($params = array()) { if(count($params) > 0) { foreach($params as $key => $val) { if(isset($this->$key)) { $this->$key = $val; } } } } // -------------------------------------------------------------------- /** * Generate the pagination links * * @access public * @return string */ function create_links() { // If our item count or per-page total is zero there is no need to continue. if($this->total_rows == 0 or $this->per_page == 0) { return ''; } // Calculate the total number of pages $num_pages = ceil($this->total_rows / $this->per_page); // Is there only one page? Hm... nothing more to do here then. if($num_pages == 1) { return ''; } // Determine the current page number. $CI = & get_instance(); if($CI->config->item('enable_query_strings') === TRUE or $this->page_query_string === TRUE) { if($CI->input->get($this->query_string_segment) != 0) { $this->cur_page = $CI->input->get($this->query_string_segment); // Prep the current page - no funny business! $this->cur_page = (int)$this->cur_page; } } else { if($CI->uri->segment($this->uri_segment) != 0) { $this->cur_page = $CI->uri->segment($this->uri_segment); // Prep the current page - no funny business! $this->cur_page = (int)$this->cur_page; } } $this->num_links = (int)$this->num_links; if($this->num_links < 1) { show_error('Your number of links must be a positive number.'); } if(!is_numeric($this->cur_page)) { $this->cur_page = 0; } // Is the page number beyond the result range? // If so we show the last page if($this->cur_page > $this->total_rows) { $this->cur_page = ($num_pages - 1) * $this->per_page; } $uri_page_number = $this->cur_page; $this->cur_page = floor(($this->cur_page / $this->per_page) + 1); // Calculate the start and end numbers. These determine // which number to start and end the digit links with $start = (($this->cur_page - $this->num_links) > 0)? $this->cur_page - ($this->num_links - 1) :1; $end = (($this->cur_page + $this->num_links) < $num_pages)? $this->cur_page + $this->num_links :$num_pages; // Is pagination being used over GET or POST? If get,add a per_page query // string. If post,add a trailing slash to the base URL if needed if($CI->config->item('enable_query_strings') === TRUE or $this->page_query_string === TRUE) { $this->base_url = rtrim($this->base_url) . '&' . $this->query_string_segment . '='; } else { $this->base_url = rtrim($this->base_url,'/') . '/'; } // And here we go... $output = ''; // Render the "First" link if($this->cur_page > ($this->num_links + 1)) { $output .= $this->first_tag_open . '<a href="' . $this->base_url . '">' . $this->first_link . '</a>' . $this->first_tag_close; } // Render the "prevIoUs" link if($this->cur_page != 1) { $i = $uri_page_number - $this->per_page; if($i == 0) $i = ''; $output .= $this->prev_tag_open . '<a href="' . $this->base_url . $i . '">' . $this->prev_link . '</a>' . $this->prev_tag_close; } // Write the digit links for($loop = $start - 1; $loop <= $end; $loop ++) { $i = ($loop * $this->per_page) - $this->per_page; if($i >= 0) { if($this->cur_page == $loop) { $output .= $this->cur_tag_open . $loop . $this->cur_tag_close; // Current page } else { $n = ($i == 0)? '' :$i; $output .= $this->num_tag_open . '<a href="' . $this->base_url . $n . '">' . $loop . '</a>' . $this->num_tag_close; } } } // Render the "next" link if($this->cur_page < $num_pages) { $output .= $this->next_tag_open . '<a href="' . $this->base_url . ($this->cur_page * $this->per_page) . '">' . $this->next_link . '</a>' . $this->next_tag_close; } // Render the "Last" link if(($this->cur_page + $this->num_links) < $num_pages) { $i = (($num_pages * $this->per_page) - $this->per_page); $output .= $this->last_tag_open . '<a href="' . $this->base_url . $i . '">' . $this->last_link . '</a>' . $this->last_tag_close; } // Kill double slashes. Note: Sometimes we can end up with a double slash // in the penultimate link so we'll kill all double slashes. $output = preg_replace("#([^:])//+#","\\1/",$output); // Add the wrapper HTML if exists $output = $this->full_tag_open . $output . $this->full_tag_close; return $output; } } // END Pagination Class /* End of file Pagination.PHP */ /* Location: ./system/libraries/Pagination.PHP */
2.继承ci的分页类
<?PHP // 扩展分页类，实现用 ajax 分页 class MY_Pagination extends CI_Pagination { function __construct() { parent::__construct(); } /** * Generate the pagination links * * @access public * @return string */ function createAjaxlinks($cur_page = FALSE) { // If our item count or per-page total is zero there is no need to continue. if($this->total_rows == 0 or $this->per_page == 0) { return ''; } // Calculate the total number of pages $num_pages = ceil($this->total_rows / $this->per_page); // Is there only one page? Hm... nothing more to do here then. if($num_pages == 1) { return ''; } // Set the base page index for starting page number if($this->use_page_numbers) { $base_page = 1; } else { $base_page = 0; } // Determine the current page number. $CI = & get_instance(); if($CI->config->item('enable_query_strings') === TRUE or $this->page_query_string === TRUE) { if($CI->input->get($this->query_string_segment) != $base_page) { if(!$cur_page) { $this->cur_page = $CI->input->get($this->query_string_segment); // Prep the current page - no funny business! $this->cur_page = (int)$this->cur_page; } } } else { if($CI->uri->segment($this->uri_segment) != $base_page) { if(!$cur_page) { $this->cur_page = $CI->uri->segment($this->uri_segment); // Prep the current page - no funny business! $this->cur_page = (int)$this->cur_page; } } } // Set current page to 1 if using page numbers instead of offset if($this->use_page_numbers and $this->cur_page == 0) { if(!$cur_page) { $this->cur_page = $base_page; } } $this->num_links = (int)$this->num_links; if($this->num_links < 1) { show_error('Your number of links must be a positive number.'); } if(!is_numeric($this->cur_page)) { $this->cur_page = $base_page; } // Is the page number beyond the result range? // If so we show the last page if($this->use_page_numbers) { if($this->cur_page > $num_pages) { $this->cur_page = $num_pages; } } else { if($this->cur_page > $this->total_rows) { $this->cur_page = ($num_pages - 1) * $this->per_page; } } $uri_page_number = $this->cur_page; if(!$this->use_page_numbers) { $this->cur_page = floor(($this->cur_page / $this->per_page) + 1); } // Calculate the start and end numbers. These determine // which number to start and end the digit links with $start = (($this->cur_page - $this->num_links) > 0)? $this->cur_page - ($this->num_links - 1) :1; $end = (($this->cur_page + $this->num_links) < $num_pages)? $this->cur_page + $this->num_links :$num_pages; // Is pagination being used over GET or POST? If get,'/') . '/'; } // And here we go... $output = ''; // Render the "First" link if($this->first_link !== FALSE and $this->cur_page > ($this->num_links + 1)) { $first_url = ($this->first_url == '')? $this->base_url :$this->first_url; $output .= $this->first_tag_open . '<a ' . $this->anchor_class . 'href="javascript:void(0);"' . 'p=1' . '>' . $this->first_link . '</a>' . $this->first_tag_close; } // Render the "prevIoUs" link if($this->prev_link !== FALSE and $this->cur_page != 1) { if($this->use_page_numbers) { $i = $uri_page_number - 1; } else { $i = $uri_page_number - $this->per_page; } if($i == 0 && $this->first_url != '') { $output .= $this->prev_tag_open . '<a ' . $this->anchor_class . 'href="javascript:void(0);" class="pre">' . $this->prev_link . '</a>' . $this->prev_tag_close; } else { $i = ($i == 0)? '' :$this->prefix . $i . $this->suffix; $output .= $this->prev_tag_open . '<a ' . $this->anchor_class . 'href="javascript:void(0);" class="pre">' . $this->prev_link . '</a>' . $this->prev_tag_close; } } // Render the pages if($this->display_pages !== FALSE) { // Write the digit links for($loop = $start - 1; $loop <= $end; $loop ++) { if($this->use_page_numbers) { $i = $loop; } else { $i = ($loop * $this->per_page) - $this->per_page; } if($i >= $base_page) { if($this->cur_page == $loop) { $output .= str_replace('>','',$this->cur_tag_open) . "p=$loop" . '>' . $loop . $this->cur_tag_close; // Current page } else { $n = ($i == $base_page)? '' :$i; if($n == '' && $this->first_url != '') { $output .= $this->num_tag_open . '<a ' . $this->anchor_class . 'href="javascript:void(0);"' . 'p=' . $loop . '>' . $loop . '</a>' . $this->num_tag_close; } else { $n = ($n == '')? '' :$this->prefix . $n . $this->suffix; $output .= $this->num_tag_open . '<a ' . $this->anchor_class . 'href="javascript:void(0);"' . 'p=' . $loop . '>' . $loop . '</a>' . $this->num_tag_close; } } } } } // Render the "next" link if($this->next_link !== FALSE and $this->cur_page < $num_pages) { if($this->use_page_numbers) { $i = $this->cur_page + 1; } else { $i = ($this->cur_page * $this->per_page); } $output .= $this->next_tag_open . '<a ' . $this->anchor_class . 'href="javascript:void(0);" class="next">' . $this->next_link . '</a>' . $this->next_tag_close; } // Render the "Last" link if($this->last_link !== FALSE and ($this->cur_page + $this->num_links) < $num_pages) { if($this->use_page_numbers) { $i = $num_pages; } else { $i = (($num_pages * $this->per_page) - $this->per_page); } $output .= $this->last_tag_open . '<a ' . $this->anchor_class . 'href="javascript:void(0);"' . 'p=' . $i . '>' . $this->last_link . '</a>' . $this->last_tag_close; } // Kill double slashes. Note: Sometimes we can end up with a double slash // in the penultimate link so we'll kill all double slashes. $output = preg_replace("#([^:])//+#",$output); // Add the wrapper HTML if exists $output = $this->full_tag_open . $output . $this->full_tag_close; return $output; } }
3.调用方法
public function setAjaxPage($total_rows,$url,$per_page = 15,$p=1)
{
// 分页样式配置
$this->load->library('pagination');
$config['first_link'] = '第一页';
$config['last_link'] = '最后一页';
$config['next_link'] = '下一页';
$config['prev_link'] = '上一页';
$config['per_page'] = $per_page; // 每页几条
$config['num_links'] = 2; // 定义显示几页
$config['total_rows'] = $total_rows;
$config['base_url'] = "#";
$config['cur_tag_open'] = "<a class='current' href='javascript:void(0);'>";
$config['cur_tag_close'] = '</a>';
$config['cur_page'] = $p;
$config['use_page_numbers'] = 1;
$this->pagination->initialize($config);
$page = $this->getPage($this->pagination->createAjaxlinks(TRUE),$total_rows,$per_page,true);
return $page;
}
private function getPage($leftlinks,$isAjax = false)
{
if($isAjax)
{
$goto = "<div class='pagelists right' style='overflow:hidden;'>
<div class='pagelist-left right' style='padding:25px 0 0 0;'>";
}
else
{
$goto = "<div class='pagelists' style='padding-top:25px;'>
<div class='pagelist-left'>";
}
$goto .= "<div class='pagelist'>
<span>共有 " . $total_rows . " 条</span>" . $leftlinks . "
<span>每页显示" . $per_page . "条，转到第</span>";
if($isAjax)
{
$goto .= "<input type='text' name='per_page' class='pl-text' value='' />
<span>页</span>
<input type='button' value='确定' class='button-small-yellow'/>";
}
else
{
$goto .= "<input type='text' name='per_page' class='pl-text' value='' onKeyDown=\"bindEnter(event,this.value," .
$per_page . ")\" />
<span>页</span>
<input type='button' onclick=\"gotoPage(this," . $per_page . ")\" value='确定' class='button-small-yellow'/>";
}
$goto .= "</div></div></div>";
return $goto;
}
4.使用方法
$pages = $ctrl->setAjaxPage($totalCnt,"",$perNum,$p);
$totalCnt ：总的数量
<pre name="code" class="PHP">$perNum：每页显示的数量$p:页码
5.页面传值
//分页按钮点击事件 $(".pagelist a").live('click',function(){ var p = 0; if($(this).hasClass('next')) { p = parseInt($(".pagelist a.current").attr('p'))+1; } else if($(this).hasClass('pre')) { p = parseInt($(".pagelist a.current").attr('p'))-1; } else { p = parseInt($(this).attr('p')); } var type = "<?PHP echo $type?>"; var enameId = $.trim($("#enameId").text()); getData(type,enameId,p); }); $(".pagelist .button-small-yellow").live('click',function(){ var p = parseInt($(".pagelist input[name='per_page']").val()); if(isNaN(p)) { alert('请输入页码'); return false; } var type = "<?PHP echo $type?>"; var enameId = $.trim($("#enameId").text()); getData(type,p); $(".pagelist a[p="+p+"]").addClass('current').siblings().removeClass('current'); });
注意:js用ajax获取数据的时候，只需要把要跳转的页码提交到服务器即可.
