始终显示上一个&下一个链接使用CodeIgniter分页类 [英] Always show Previous & Next links using CodeIgniter Pagination Class

问题描述

问题说明

当我在第一页时，上一页链接未显示当我在最后一页时，做下链接。我设置 $ config ['prev_link'] ='上一页'和 $ config ['next_link'] ='下一页如何总是显示，使用CodeIgniter分页类别。 上一页和下一页链接为< p> b
$ b

更新

最后自己解决。参见下面的解决方案。使用v2.1.3

解决方案

这里是解决方案： / p>

1. 通过创建一个新文件扩展Codeigniter分页类： MY_Pagination。




2. 更改

   所有变量和类前缀从 protected 到 public 的声明。




3. 在MY_Pagination.php中定义两个公共变量： $ display_prev_link 和 $ display_next_link code> FALSE 。




4. 在create_links（）函数中， > if（$ this-> prev_link！== FALSE&& $ this-> cur_page！== 1）语句 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; 
     

   和另一个 elseif if（$ this-> next_link！== FALSE&& $ this-> cur_page< $ num_pages）语句：

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

>

通过定义 $ config ['display_prev_link'] 和 $ config ['display_prev_link '] 等于 TRUE 或 FALSE ，您可以控制上一页和下一页链接。

c $ c> application / library / MY_Pagination.php 档案：

 <？php 
 
 //扩展分页类
 //添加一个在不需要时显示PREVIOUS和NEXT链接的选项。 
 //通过设置$ display_prev_link  - 和 -  $ display_next_link为true 
 
 //！ EDITIONS => LINES 263和316！ 
 
 defined（'BASEPATH'）或exit（'不允许直接脚本访问）; 
 
 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 ='& lsaquo;第一'; 
 public $ next_link ='& gt;'; 
 public $ prev_link ='& lt;'; 
 public $ last_link ='Last& rsaquo;'; 
 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'; 
 
 // ---------------------------------------- ---------------------------- 
 
 / ** 
 *构造函数
 * 
 * @param array $ params初始化参数
 * @return void 
 * / 
 public function __construct（$ params = array（））
 {
 $ this-> initialize（$ params）; 
 log_message（'debug'，'Pagination Class Initialized'）; 
} 
 
 // ----------------------------------- ----------------------------- 
 
 / ** 
 *初始化偏好
 * 
 * @param array $ params初始化参数
 * @return void 
 * / 
 public function initialize（$ params = array（））
 {
 $ attributes = array（）; 
 
 if（isset（$ params ['attributes']）&& is_array（$ params ['attributes']））
 {
 $ attributes = $ params [ 'attributes']; 
 unset（$ params ['attributes']）; 
} 
 
 //对于anchor_class选项不再支持的旧支持
 //应该在CI 3.1+中删除
 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; 
} 
} 
} 
} 
 
 // -------------------- ------------------------------------------------ 
 
 / ** 
 *生成分页链接
 * 
 * @return string 
 * / 
 public function create_links（）
 {
 //如果我们的项目计数或每页总计为零，则无需继续。 
 if（$ this-> total_rows === 0 OR $ this-> per_page === 0）
 {
 return''; 
} 
 
 //计算总页数
 $ num_pages =（int）ceil（$ this-> total_rows / $ this-> per_page）; 
 
 //只有一个页面？嗯...没有什么比这里做的更多。 
 if（$ num_pages === 1）
 {
 // $ uri_page_number = 1; 
 // return''; 
} 
 
 //设置起始页号的基页索引
 $ base_page =（$ this-> use_page_numbers）？ 1：0; 
 
 //确定当前页码。 
 $ CI =& get_instance（）; 
 
 //看看我们是否在链接上使用前缀或后缀
 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 = 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）; 
} 
 
 //如果当前页面无效或使用页码而不是偏移量，将当前页面设置为1 
 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（'您的链接数必须是正数。 
} 
 
 //页码是否超出结果范围？ 
 //如果是这样我们显示最后一页
 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）; 
} 
 
 //计算开始和结束数字。这些确定
 //哪个数字开始和结束数字链接与
 $ 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; 
 
 //分页是通过GET还是POST使用？如果得到，添加一个per_page查询
 //字符串。如果发布，如果需要，添加一个尾部斜杠到基本URL 
 if（$ CI-> config-> item（'enable_query_strings'）=== TRUE OR $ this-> page_query_string === TRUE） 
 {
 $ segment =（strpos（$ this-> base_url，'？'））？ '& amp;'：'？'; 
 $ this-> base_url = rtrim（$ this-> base_url）。$ segment。$ this-> query_string_segment。'='; 
} 
 else 
 {
 $ this-> base_url = rtrim（$ this-> base_url，'/'）。 
} 
 
 //这里我们去... 
 $ output =''; 
 $ query_string =''; 
 
 //将查询字符串中的任何内容添加回链接
 //注意：与query_string_segment或任何其他查询字符串选项无关
 if（$ this-> reuse_query_string === TRUE）
 {
 $ get = $ CI-> input-> get（）; 
 
 //取消控制，方法，旧路由选项
 unset（$ get ['c']，$ get ['m']，$ get [$ this-> ; query_string_segment]）; 
 
 if（！empty（$ get））
 {
 //将一切放在末尾
 $ query_string =（strpos（$ this-> base_url ，'？'）！== FALSE？'& amp;'：'？'）
 .http_build_query（$ get，''，'& amp;'） 
 
 //将后缀添加到更多的链接中，以方便更多链接
 $ this-> suffix。= $ query_string; 
} 
} 
 
 //渲染第一个链接
 if（$ this-> first_link！== FALSE&& $ this-> ; cur_page>（$ this-> num_links + 1））
 {
 $ first_url =（$ this-> first_url ===''）？ $ this-> base_url：$ this-> first_url; 
 
 //取一般参数，挤压这个分页页面attr在JS fw的
 $ 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; 
} 
 
 //渲染上一个链接
 if（$ this-> prev_link！== FALSE& $ this-> cur_page！== 1）
 {
 $ i =（$ this-> use_page_numbers）？ $ uri_page_number  -  1：$ uri_page_number  -  $ this-> per_page; 
 
 //取一般参数，挤压这个分页页面attr在JS fw的
 $ attributes = sprintf（'％s％s =％d'，$ this - > _attributes，$ this-> data_page_attr，（int）$ i）; 
 
 if（$ i === $ base_page& $ amp-> 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 '）。'>'
。$ 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 !!!!!!!!!! 
 
 //渲染页面
 if（$ this-> display_pages！== FALSE）
 {
 //写数字链接
 （$ loop = $ start -1; $ loop< = $ end; $ loop ++）
 {
 $ i =（$ this-> use_page_numbers）？ $ loop：（$ loop * $ this-> per_page） -  $ this-> per_page; 
 
 //取一般参数，挤压这个分页页面attr在JS fw的
 $ 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; //当前页
} 
 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'）。>'
 //。循环。'< / 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 '）。'>'
。$ loop。'< / a>'。$ this-> num_tag_close; 
} 
} 
} 
} 
} 
 
 //渲染next链接
 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; 
 
 //获取一般参数，并挤压这个分页页面attr在JS fw的
 $ 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 !!!!!!!!!! 
 
 //渲染最后链接
 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; 
 
 //获取一般参数，并挤压这个分页页面attr在JS fw的
 $ 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; 
} 
 
 //删除双斜杠。注意：有时我们可以在倒数第二个链接中以双斜杠
 //结尾，因此我们将删除所有双斜杠。 
 $ output = preg_replace（'＃（[^：]）// +＃'，'\\1 /'，$ output）; 
 
 //添加包装HTML如果存在
 return $ this-> full_tag_open。$ output。$ this-> full_tag_close; 
} 
 
 // ----------------------------------- --------------------------------- 
 
 / ** 
 *解析属性
 * 
 * @param array $ attributes 
 * @return void 
 * / 
 public function _parse_attributes（$ attributes）
 {
 isset（$ attributes ['rel']）OR $ attributes ['rel'] = TRUE; 
 $ this-> _link_types =（$ attributes ['rel']）
？数组（'start'=>'start'，'prev'=>'prev'，'next'=>'next'）
：array 
 unset（$ attributes ['rel']）; 
 
 $ this-> _attributes =''; 
 foreach（$ attributes as $ key => $ value）
 {
 $ this-> _attributes。=''。$ key。'='。$ value。' '; 
} 
} 
 
 // ------------------------------ -------------------------------------- 
 
 / ** 
 *添加rel属性
 * 
 * @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''; 
} 
 
} 
 
 / *文件结束Pagination.php * / 
 / *位置：./system/libraries/Pagination.php * / 
  

并且不要忘记设置 $ config ['$ display_prev_link' ] 和 $ config ['$ display_next_link'] 设置为 true 或 false 。

祝你好运！

Problem Description
When I'm at the first page, the previous link is not showing up and so do the next link when I'm at the last page. I set $config['prev_link']='previous' and $config['next_link']='next'.

Question
How to always present, using the CodeIgniter pagination class, the Previous and Next links as <p> tags when they are not in used?

Update
End up Solving it myself. See solution below. Working on v2.1.3

解决方案

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      = '&lsaquo; First';
    public $next_link       = '&gt;';
    public $prev_link       = '&lt;';
    public $last_link       = 'Last &rsaquo;';
    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, '?')) ? '&amp;' : '?';
            $this->base_url = rtrim($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 ? '&amp;' : '?')
                        .http_build_query($get, '', '&amp;');

                // 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!

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