Always show Previous & Next links using CodeIgniter Pagination Class

Here is the Solution:

1. Extend Codeigniter pagination class by creating a new file: MY_Pagination.php and placing it in the application/library folder.

2. Change all variables and classes prefix declarations from protected to public.

3. Define two public variable in MY_Pagination.php: $display_prev_link and $display_next_link and set it to FALSE.

4. In the create_links() function, add to the end of the if ($this->prev_link !== FALSE && $this->cur_page !== 1) statement an elseif statement:

   elseif ($this->display_prev_link && $this->cur_page === 1)    $output .= $this->prev_tag_open.'<span>'.$this->prev_link.'</span>'.$this->next_tag_close;

   and another elseif statement to the end of the if ($this->next_link !== FALSE && $this->cur_page < $num_pages) statement:

   elseif ($this->display_next_link && $this->cur_page >= $num_pages)    $output .= $this->next_tag_open.'<span>'.$this->next_link.'</span>'.$this->next_tag_close;

So Now,

By defining $config['display_prev_link'] and $config['display_prev_link'] equal to TRUE or FALSE, you can control the presentation of the Previous and Next links.

Here is the complete application/library/MY_Pagination.php file:

<?php  // Extends the Pagination Class// Add an option of presenting the PREVIOUS and NEXT links when they're not needed.// by setting $display_prev_link - and - $display_next_link to true// !!! EDITIONS => LINES 263 AND 316 !!!defined('BASEPATH') OR exit('No direct script access allowed');class MY_Pagination extends CI_Pagination {    public $display_prev_link = false;    public $display_next_link = false;    public $base_url        = '';    public $prefix      = '';    public $suffix      = '';    public $total_rows      = 0;    public $per_page        = 10;    public $num_links       = 2;    public $cur_page        = 0;    public $use_page_numbers    = FALSE;    public $first_link      = '‹ First';    public $next_link       = '>';    public $prev_link       = '<';    public $last_link       = 'Last ›';    public $uri_segment     = 3;    public $full_tag_open   = '';    public $full_tag_close  = '';    public $first_tag_open  = '';    public $first_tag_close = '';    public $last_tag_open   = '';    public $last_tag_close  = '';    public $first_url       = '';    public $cur_tag_open        = '<strong>';    public $cur_tag_close   = '</strong>';    public $next_tag_open   = '';    public $next_tag_close  = '';    public $prev_tag_open   = '';    public $prev_tag_close  = '';    public $num_tag_open        = '';    public $num_tag_close   = '';    public $page_query_string   = FALSE;    public $query_string_segment = 'per_page';    public $display_pages   = TRUE;    public $_attributes     = '';    public $_link_types     = array();    public $reuse_query_string   = FALSE;    public $data_page_attr  = 'data-ci-pagination-page';    // --------------------------------------------------------------------    /**     * Constructor     *     * @param   array   $params Initialization parameters     * @return  void     */    public function __construct($params = array())    {        $this->initialize($params);        log_message('debug', 'Pagination Class Initialized');    }    // --------------------------------------------------------------------    /**     * Initialize Preferences     *     * @param   array   $params Initialization parameters     * @return  void     */    public function initialize($params = array())    {        $attributes = array();        if (isset($params['attributes']) && is_array($params['attributes']))        {            $attributes = $params['attributes'];            unset($params['attributes']);        }        // Deprecated legacy support for the anchor_class option        // Should be removed in CI 3.1+        if (isset($params['anchor_class']))        {            empty($params['anchor_class']) OR $attributes['class'] = $params['anchor_class'];            unset($params['anchor_class']);        }        $this->_parse_attributes($attributes);        if (count($params) > 0)        {            foreach ($params as $key => $val)            {                if (isset($this->$key))                {                    $this->$key = $val;                }            }        }    }    // --------------------------------------------------------------------    /**     * Generate the pagination links     *     * @return  string     */    public function create_links()    {        // If our item count or per-page total is zero there is no need to continue.        if ($this->total_rows === 0 OR $this->per_page === 0)        {            return '';        }        // Calculate the total number of pages        $num_pages = (int) ceil($this->total_rows / $this->per_page);        // Is there only one page? Hm... nothing more to do here then.        if ($num_pages === 1)        {            //$uri_page_number = 1;            //return '';        }        // Set the base page index for starting page number        $base_page = ($this->use_page_numbers) ? 1 : 0;        // Determine the current page number.        $CI =& get_instance();        // See if we are using a prefix or suffix on links        if ($this->prefix !== '' OR $this->suffix !== '')        {            $this->cur_page = (int) str_replace(array($this->prefix, $this->suffix), '', $CI->uri->rsegment($this->uri_segment));        }        if ($CI->config->item('enable_query_strings') === TRUE OR $this->page_query_string === TRUE)        {            if ($CI->input->get($this->query_string_segment) != $base_page)            {                $this->cur_page = (int) $CI->input->get($this->query_string_segment);            }        }        elseif ( ! $this->cur_page && $CI->uri->segment($this->uri_segment) !== $base_page)        {            $this->cur_page = (int) $CI->uri->rsegment($this->uri_segment);        }        // Set current page to 1 if it's not valid or if using page numbers instead of offset        if ( ! is_numeric($this->cur_page) OR ($this->use_page_numbers && $this->cur_page === 0))        {            $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.');        }        // 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 = $num_pages;            }        }        elseif ($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)        {            $this->cur_page = (int) floor(($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)        {            $segment = (strpos($this->base_url, '?')) ? '&' : '?';            $this->base_url = rtrim($this->base_url).$segment.$this->query_string_segment.'=';        }        else        {            $this->base_url = rtrim($this->base_url, '/') .'/';        }        // And here we go...        $output = '';        $query_string = '';        // Add anything in the query string back to the links        // Note: Nothing to do with query_string_segment or any other query string options        if ($this->reuse_query_string === TRUE)        {            $get = $CI->input->get();            // Unset the controll, method, old-school routing options            unset($get['c'], $get['m'], $get[$this->query_string_segment]);            if ( ! empty($get))            {                // Put everything else onto the end                $query_string = (strpos($this->base_url, '?') !== FALSE ? '&' : '?')                        .http_build_query($get, '', '&');                // Add this after the suffix to put it into more links easily                $this->suffix .= $query_string;            }        }        // Render the "First" link        if ($this->first_link !== FALSE && $this->cur_page > ($this->num_links + 1))        {            $first_url = ($this->first_url === '') ? $this->base_url : $this->first_url;            // Take the general parameters, and squeeze this pagination-page attr in there for JS fw's            $attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, 1);            $output .= $this->first_tag_open.'<a href="'.$first_url.'"'.$attributes.$this->_attr_rel('start').'>'                .$this->first_link.'</a>'.$this->first_tag_close;        }        // Render the "previous" link        if ($this->prev_link !== FALSE && $this->cur_page !== 1)        {            $i = ($this->use_page_numbers) ? $uri_page_number - 1 : $uri_page_number - $this->per_page;            // Take the general parameters, and squeeze this pagination-page attr in there for JS fw's            $attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, (int) $i);            if ($i === $base_page && $this->first_url !== '')            {                $output .= $this->prev_tag_open.'<a href="'.$this->first_url.$query_string.'"'.$attributes.$this->_attr_rel('prev').'>'                    .$this->prev_link.'</a>'.$this->prev_tag_close;            }            else            {                $append = ($i === $base_page) ? $query_string : $this->prefix.$i.$this->suffix;                $output .= $this->prev_tag_open.'<a href="'.$this->base_url.$append.'"'.$attributes.$this->_attr_rel('prev').'>'                    .$this->prev_link.'</a>'.$this->prev_tag_close;            }        } // !!!!!!!! START EDITION !!!!!!!!!!        elseif ($this->display_prev_link && $this->cur_page === 1) {                $output .= $this->prev_tag_open.'<span>'.$this->prev_link.'</span>'.$this->next_tag_close;            }// !!!!!!!! END EDITION !!!!!!!!!!        // Render the pages        if ($this->display_pages !== FALSE)        {            // Write the digit links            for ($loop = $start -1; $loop <= $end; $loop++)            {                $i = ($this->use_page_numbers) ? $loop : ($loop * $this->per_page) - $this->per_page;                // Take the general parameters, and squeeze this pagination-page attr in there for JS fw's                $attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, (int) $i);                if ($i >= $base_page)                {                    if ($this->cur_page === $loop)                    {                        $output .= $this->cur_tag_open.$loop.$this->cur_tag_close; // Current page                    }                    else                    {                        $n = ($i === $base_page) ? '' : $i;                        if ($n === '' && ! empty($this->first_url))                        {                            //$output .= $this->num_tag_open.'<a href="'.$this->first_url.$query_string.'"'.$attributes.$this->_attr_rel('start').'>'                            //  .$loop.'</a>'.$this->num_tag_close;                        }                        else                        {                            $append = ($n === '') ? $query_string : $this->prefix.$n.$this->suffix;                            $output .= $this->num_tag_open.'<a href="'.$this->base_url.$append.'"'.$attributes.$this->_attr_rel('start').'>'                                .$loop.'</a>'.$this->num_tag_close;                        }                    }                }            }        }        // Render the "next" link        if ($this->next_link !== FALSE && $this->cur_page < $num_pages)        {            $i = ($this->use_page_numbers) ? $this->cur_page + 1 : $this->cur_page * $this->per_page;            // Take the general parameters, and squeeze this pagination-page attr in there for JS fw's            $attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, (int) $i);            $output .= $this->next_tag_open.'<a href="'.$this->base_url.$this->prefix.$i.$this->suffix.'"'.$attributes                .$this->_attr_rel('next').'>'.$this->next_link.'</a>'.$this->next_tag_close;        } // !!!!!!!! START EDITION !!!!!!!!!!        elseif ($this->display_next_link && $this->cur_page >= $num_pages) {            $output .= $this->next_tag_open.'<span>'.$this->next_link.'</span>'.$this->next_tag_close;        }// !!!!!!!! END EDITION !!!!!!!!!!        // Render the "Last" link        if ($this->last_link !== FALSE && ($this->cur_page + $this->num_links) < $num_pages)        {            $i = ($this->use_page_numbers) ? $num_pages : ($num_pages * $this->per_page) - $this->per_page;            // Take the general parameters, and squeeze this pagination-page attr in there for JS fw's            $attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, (int) $i);            $output .= $this->last_tag_open.'<a href="'.$this->base_url.$this->prefix.$i.$this->suffix.'"'.$attributes.'>'                .$this->last_link.'</a>'.$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        return $this->full_tag_open.$output.$this->full_tag_close;    }    // --------------------------------------------------------------------    /**     * Parse attributes     *     * @param   array   $attributes     * @return  void     */    public function _parse_attributes($attributes)    {        isset($attributes['rel']) OR $attributes['rel'] = TRUE;        $this->_link_types = ($attributes['rel'])                    ? array('start' => 'start', 'prev' => 'prev', 'next' => 'next')                    : array();        unset($attributes['rel']);        $this->_attributes = '';        foreach ($attributes as $key => $value)        {            $this->_attributes .= ' '.$key.'="'.$value.'"';        }    }    // --------------------------------------------------------------------    /**     * Add "rel" attribute     *     * @link    http://www.w3.org/TR/html5/links.html#linkTypes     * @param   string  $type     * @return  string     */    public function _attr_rel($type)    {        if (isset($this->_link_types[$type]))        {            unset($this->_link_types[$type]);            return ' rel="'.$type.'"';        }        return '';    }}/* End of file Pagination.php *//* Location: ./system/libraries/Pagination.php */

And don't forget to set $config['$display_prev_link'] and $config['$display_next_link'] set to true or false according to your needs.

Good Luck!

Example: http://www.friv100flash.com/

$config['base_url'] = base_url(); // xác định trang phân trang$config['total_rows'] = $this->Game_model->count_all(); // xác định tổng số record$config['per_page'] = 120; // xác định số record ở mỗi trang$config['uri_segment'] = 1; // xác định segment chứa page number$config['num_links'] = 7;$config['display_pages'] = TRUE;$config['use_page_numbers'] = TRUE;//Encapsulate whole pagination $config['full_tag_open'] = '<ul class="pagination">';$config['full_tag_close'] = '</ul>';//First link of pagination$config['first_link'] = 'First';$config['first_tag_open'] = '<li>>';$config['first_tag_close'] = '</li>';//Customizing the “Digit” Link$config['num_tag_open'] = '<li>';$config['num_tag_close'] = '</li>';//For PREVIOUS PAGE Setup$config['prev_link'] = 'prev';$config['prev_tag_open'] = '<li>';$config['prev_tag_close'] = '</li>';//For NEXT PAGE Setup$config['next_link'] = 'Next';$config['next_tag_open'] = '<li>';$config['next_tag_close'] = '</li>';//For LAST PAGE Setup$config['last_link'] = 'Last';$config['last_tag_open'] = '<li>';$config['last_tag_close'] = '</li>';//For CURRENT page on which you are$config['cur_tag_open'] = '<li class="active"><a href="#">';$config['cur_tag_close'] = '</a></li>';$this->pagination->initialize($config);if($this->uri->segment(1) == 0){    $offset = 0;}else{    $offset = ($config['per_page'])*($this->uri->segment(1)-1);}

ci\system\libraries\Pagination.php

before

    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="'.$this->first_url.'">'.$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="'.$this->base_url.$i.'">'.$this->prev_link.'</a>'.$this->prev_tag_close;        }    }

after (ADD LAST 3 LINE)

    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="'.$this->first_url.'">'.$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="'.$this->base_url.$i.'">'.$this->prev_link.'</a>'.$this->prev_tag_close;        }    }    else{         $output .= '<span class="hidden">'.$this->prev_link.'</span>';    }