number of rows dynamic in codeigniter pagination links - codeigniter

Question

I am working on Codeigniter (Gocart) Project.I am stuck on one task,I need your help.
I want to show option to select number of records per page.By default controller index action is as follows
function index($order_by="id", $sort_order="DESC", $code=0, $page=0, $rows=15)
and I am having dropdown in views for number of rows.
then in controller I have written a condition.
if(isset($_REQUEST['num_rows'])){
$rows = $_REQUEST['num_rows'];
}
else{
$rows = $rows;
}
and this is the codeigniter pagination code of controller.
$this->load->library('pagination');
$config['base_url'] = site_url($this->config->item('admin_folder').'/products/index/'.$order_by.'/'.$sort_order.'/'.$code);
$config['total_rows'] = $data['total'];
$config['per_page'] = $rows;
$config['uri_segment'] = 7;
$config['first_link'] = 'First';
$config['first_tag_open'] = '<li>';
$config['first_tag_close'] = '</li>';
$config['last_link'] = 'Last';
$config['last_tag_open'] = '<li>';
$config['last_tag_close'] = '</li>';
$config['full_tag_open'] = '<div class="pagination"><ul>';
$config['full_tag_close'] = '</ul></div>';
$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>';
$config['prev_link'] = '«';
$config['prev_tag_open'] = '<li>';
$config['prev_tag_close'] = '</li>';
$config['next_link'] = '»';
$config['next_tag_open'] = '<li>';
$config['next_tag_close'] = '</li>';
$this->pagination->initialize($config);
and in view
<?php echo $this->pagination->create_links();?>
Now how will I set number of rows to dynamic for paginate links.I hope you got my question

Answer 1

First of all, This should do the trick:
if(isset($_REQUEST['num_rows'])){
$rows = $_REQUEST['num_rows'];
}
Else condition isn't really required here as you are assigning $rows to itself.
Other than this, CodeIgniter purges the $_REQUEST variable for security reasons. So I believe IF condition is always false. Unless you have set 'global_xss_filtering' variable to true in config file.
You can also use $this->input->get('num_rows') or $this->input->post('num_rows') depending on which method you are using.
Everything else seems OK to me.