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AJAX Pagination with CI Pagination Library
I have modified CI Pagination Class (system/libraries/Pagination.php) into an Ajax based pagination. The code is below:
<?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) 2006, 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 = ' '; var $cur_tag_close = ''; 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 $div = ''; var $postVar = '';
/**-
Constructor
-
@access public
-
@param array initialization parameters */ function CI_Pagination($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->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;
// Add a trailing slash to the base URL if needed $this->base_url = rtrim($this->base_url, '/') .'/';
// And here we go... $output = '';
// Render the "First" link if ($this->cur_page > $this->num_links) {
$link = $this->my_link_to_remote($this->base_url, $this->first_link, $this->div, '', NULL); $output .= $this->first_tag_open.$link.$this->first_tag_close;}
// Render the "previous" link if ($this->cur_page != 1) { $i = $uri_page_number - $this->per_page; if ($i == 0) $i = ''; //$output .= $this->prev_tag_open.''.$this->prev_link.''.$this->prev_tag_close;
$params = array($this->postVar=>$i); $link = $this->my_link_to_remote($this->base_url, $this->prev_link, $this->div, '', $params); $output .= $this->prev_tag_open.$link.$this->prev_tag_close;}
// Write the digit links for ($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; $params = array($this->postVar=>$n); $link = $this->my_link_to_remote($this->base_url, $loop, $this->div, '', $params); $output .= $this->num_tag_open.$link.$this->num_tag_close; } }}
// Render the "next" link if ($this->cur_page < $num_pages) { $params = array($this->postVar=>($this->cur_page * $this->per_page)); $link = $this->my_link_to_remote($this->base_url, $this->next_link, $this->div, '', $params); $output .= $this->next_tag_open.$link.$this->next_tag_close; }
// Render the "Last" link if (($this->cur_page + $this->num_links) < $num_pages) { $i = (($num_pages * $this->per_page) - $this->per_page); $params = array($this->postVar=>$i); $link = $this->my_link_to_remote($this->base_url, $this->last_link, $this->div, '', $params); $output .= $this->last_tag_open.$link.$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 $output;
}
function my_link_to_remote($url, $text, $div, $title, $parameters=array()){ if(count($parameters) > 1){ $count = count($parameters); $i = 1; foreach($parameters as $k=>$v){ if(gettype($v) == "string"){ $v = "'".$v."'"; } //=================== if($i++ == 1){ $par = $k.":".$v.","; } elseif ($i++ < $count && $i++ > 1) { $par .= $k.":".$v.","; } else{ $par .= $k.":".$v; } } } elseif(count($parameters) == 1){ foreach($parameters as $k=>$v){ if(gettype($v) == "string"){ $v = "'".$v."'"; } $par = $k.":".$v; } } else { $par = "nothing:'todo'"; }
$html = "<a href=\"#\" title=\"$title\" onclick=\"new Ajax.Updater('$div','$url',{onLoading:function(request){Element.show('response')}, onComplete:function(request){Element.hide('response')}, method: 'post', parameters:{".$par."}, evalScripts:true}); return false;\" />$text</a>";$debug = " array=".count($parameters)." ".$par; return $html; } } // END Pagination Class ?>
-
Put below codes in your controller
$config['div'] = 'content'; //Element's ID where page will be shown
$config['base_url'] = 'index.php/mypage'; //The page contains your data (e.g. your data from database). Dont use backslash in the end of URI.
$config['total_rows'] = $total; //Total data (can be total rows of your displayed database table)
$config['per_page'] = $perPage; //Number of rows/records will be displayed each page
$config['postVar'] = 'page'; //Post variable to send (this pagination query string method is using Post)
$this->pagination->initialize($config); print $this->pagination->create_links();