Codeigniter 3.1.0 & Bootstrap Pagination Links - codeigniter

Question

On my codeigniter pagination links I am using bootstrap 3 +
When I am on the very first link it hides the << which goes back to start when I click on it.
1 2 >>
Question How can I make the codeigniter pagination all ways display << >> I have tried Always show Previous & Next links using CodeIgniter Pagination Class but is for CI2
$config['base_url'] = base_url('forum/?fid=' . $this->input->get('fid') . $url);
$config['total_rows'] = $this->thread_model->total_threads($this->input->get('fid'));
$config['per_page'] = $this->config->item('config_limit_admin');
$config['page_query_string'] = TRUE;
$config["full_tag_open"] = '<ul class="pagination">';
$config["full_tag_close"] = '</ul>';
$config["first_link"] = "«";
$config["first_tag_open"] = "<li>";
$config["first_tag_close"] = "</li>";
$config["last_link"] = "»";
$config["last_tag_open"] = "<li>";
$config["last_tag_close"] = "</li>";
$config['next_link'] = '»';
$config['next_tag_open'] = '<li>';
$config['next_tag_close'] = '<li>';
$config['prev_link'] = '«';
$config['prev_tag_open'] = '<li>';
$config['prev_tag_close'] = '<li>';
$config['cur_tag_open'] = '<li class="active"><a href="#">';
$config['cur_tag_close'] = '</a></li>';
$config['num_tag_open'] = '<li>';
$config['num_tag_close'] = '</li>';
$this->pagination->initialize($config);
$data['pagination'] = $this->pagination->create_links();

Answer 1

I have just override the create_links() of core library in slightly different way to achieve this. So All you have to do is create a file name My_Pagination.php inapplication/libraries and put this code there (Code copied from create_link() method from core library Pagination.php)
My_Pagination.php file (Codeigniter 3.1.0)
defined('BASEPATH') OR exit('No direct script access allowed');
class MY_Pagination extends CI_Pagination {
public function create_links() {
if ($this->total_rows == 0 OR $this->per_page == 0) {
return '';
}
// Calculate the total number of pages
$num_pages = (int) ceil($this->total_rows / $this->per_page);
if ($num_pages === 1) {
return '';
}
// Check the user defined number of links.
$this->num_links = (int) $this->num_links;
if ($this->num_links < 0) {
show_error('Your number of links must be a non-negative number.');
}
// Keep any existing query string items.
// Note: Has nothing to do with any other query string option.
if ($this->reuse_query_string === TRUE) {
$get = $this->CI->input->get();
// Unset the controll, method, old-school routing options
unset($get['c'], $get['m'], $get[$this->query_string_segment]);
} else {
$get = array();
}
// Put together our base and first URLs.
// Note: DO NOT append to the properties as that would break successive calls
$base_url = trim($this->base_url);
$first_url = $this->first_url;
$query_string = '';
$query_string_sep = (strpos($base_url, '?') === FALSE) ? '?' : '&';
// Are we using query strings?
if ($this->page_query_string === TRUE) {
// If a custom first_url hasn't been specified, we'll create one from
// the base_url, but without the page item.
if ($first_url === '') {
$first_url = $base_url;
// If we saved any GET items earlier, make sure they're appended.
if (!empty($get)) {
$first_url .= $query_string_sep . http_build_query($get);
}
}
// Add the page segment to the end of the query string, where the
// page number will be appended.
$base_url .= $query_string_sep . http_build_query(array_merge($get, array($this->query_string_segment => '')));
} else {
// Standard segment mode.
// Generate our saved query string to append later after the page number.
if (!empty($get)) {
$query_string = $query_string_sep . http_build_query($get);
$this->suffix .= $query_string;
}
// Does the base_url have the query string in it?
// If we're supposed to save it, remove it so we can append it later.
if ($this->reuse_query_string === TRUE && ($base_query_pos = strpos($base_url, '?')) !== FALSE) {
$base_url = substr($base_url, 0, $base_query_pos);
}
if ($first_url === '') {
$first_url = $base_url . $query_string;
}
$base_url = rtrim($base_url, '/') . '/';
}
// Determine the current page number.
$base_page = ($this->use_page_numbers) ? 1 : 0;
// Are we using query strings?
if ($this->page_query_string === TRUE) {
$this->cur_page = $this->CI->input->get($this->query_string_segment);
} elseif (empty($this->cur_page)) {
// Default to the last segment number if one hasn't been defined.
if ($this->uri_segment === 0) {
$this->uri_segment = count($this->CI->uri->segment_array());
}
$this->cur_page = $this->CI->uri->segment($this->uri_segment);
// Remove any specified prefix/suffix from the segment.
if ($this->prefix !== '' OR $this->suffix !== '') {
$this->cur_page = str_replace(array($this->prefix, $this->suffix), '', $this->cur_page);
}
} else {
$this->cur_page = (string) $this->cur_page;
}
// If something isn't quite right, back to the default base page.
if (!ctype_digit($this->cur_page) OR ( $this->use_page_numbers && (int) $this->cur_page === 0)) {
$this->cur_page = $base_page;
} else {
// Make sure we're using integers for comparisons later.
$this->cur_page = (int) $this->cur_page;
}
// Is the page number beyond the result range?
// If so, we show the last page.
if ($this->use_page_numbers) {
if ($this->cur_page > $num_pages) {
$this->cur_page = $num_pages;
}
} elseif ($this->cur_page > $this->total_rows) {
$this->cur_page = ($num_pages - 1) * $this->per_page;
}
$uri_page_number = $this->cur_page;
// If we're using offset instead of page numbers, convert it
// to a page number, so we can generate the surrounding number links.
if (!$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;
// And here we go...
$output = '';
// Render the "First" link.
if ($this->first_link !== FALSE && $this->cur_page > ($this->num_links + 1 + !$this->num_links)) {
// Take the general parameters, and squeeze this pagination-page attr in for JS frameworks.
$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 && $this->cur_page !== 1)
if ($this->prev_link !== FALSE) {//REMOVED $this->cur_page !== 1
$i = ($this->use_page_numbers) ? $uri_page_number - 1 : $uri_page_number - $this->per_page;
$attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, ($this->cur_page - 1));
if ($i === $base_page || $this->cur_page == 1) {//ADDED $this->cur_page == 1
// First page
$output .= $this->prev_tag_open . '<a href="' . $first_url . '"' . $attributes . $this->_attr_rel('prev') . '>'
. $this->prev_link . '</a>' . $this->prev_tag_close;
} else {
$append = $this->prefix . $i . $this->suffix;
$output .= $this->prev_tag_open . '<a href="' . $base_url . $append . '"' . $attributes . $this->_attr_rel('prev') . '>'
. $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++) {
$i = ($this->use_page_numbers) ? $loop : ($loop * $this->per_page) - $this->per_page;
$attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, $loop);
if ($i >= $base_page) {
if ($this->cur_page === $loop) {
// Current page
$output .= $this->cur_tag_open . $loop . $this->cur_tag_close;
} elseif ($i === $base_page) {
// First page
$output .= $this->num_tag_open . '<a href="' . $first_url . '"' . $attributes . $this->_attr_rel('start') . '>'
. $loop . '</a>' . $this->num_tag_close;
} else {
$append = $this->prefix . $i . $this->suffix;
$output .= $this->num_tag_open . '<a href="' . $base_url . $append . '"' . $attributes . '>'
. $loop . '</a>' . $this->num_tag_close;
}
}
}
}
// Render the "next" link
//if ($this->next_link !== FALSE && $this->cur_page < $num_pages)
if ($this->next_link !== FALSE) {//REMOVED $this->cur_page < $num_pages
$i = ($this->use_page_numbers) ? $this->cur_page + 1 : $this->cur_page * $this->per_page;
if($this->cur_page == $num_pages){//WHEN LAST LINK
$i = $num_pages;
}
$attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, $this->cur_page + 1);
$output .= $this->next_tag_open . '<a href="' . $base_url . $this->prefix . $i . $this->suffix . '"' . $attributes
. $this->_attr_rel('next') . '>' . $this->next_link . '</a>' . $this->next_tag_close;
}
// Render the "Last" link
if ($this->last_link !== FALSE && ($this->cur_page + $this->num_links + !$this->num_links) < $num_pages) {
$i = ($this->use_page_numbers) ? $num_pages : ($num_pages * $this->per_page) - $this->per_page;
$attributes = sprintf('%s %s="%d"', $this->_attributes, $this->data_page_attr, $num_pages);
$output .= $this->last_tag_open . '<a href="' . $base_url . $this->prefix . $i . $this->suffix . '"' . $attributes . '>'
. $this->last_link . '</a>' . $this->last_tag_close;
}
$output = preg_replace('#([^:"])//+#', '\\1/', $output);
return $this->full_tag_open . $output . $this->full_tag_close;
}
}
Just removed 2 condition
$this->cur_page !== 1 (This is below // Render the "Previous" link COMMENT)
$this->cur_page < $num_pages (This is below // Render the "next" link COMMENT)
Added 2 condition
if ($i === $base_page){... changed this as if ($i === $base_page || $this->cur_page == 1) {...
Added this inside if ($this->next_link !== FALSE) {... condition
if($this->cur_page == $num_pages){
$i = $num_pages;
}
None you have to do except putting this file in libraries directory and now your << and >> links will show always even you may change it in config as normal configuration

Answer 2

Well, you'll have to modify the create_links of the Pagination class. What I'd do it's extending the system/libraries/Pagination.php class with a MY_Pagination.php, so you override the behaviour and you can modify it accordingly to your preferences.
By the way, checking the class, I think you should look into lines 563 on:
// Render the "First" link.
if ($this->first_link !== FALSE && $this->cur_page > ($this->num_links + 1 + ! $this->num_links))
{
// Take the general parameters, and squeeze this pagination-page attr in for JS frameworks.
$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;
}
You'll have to take care of the if condition to always render the link.