Codeigniter分页无法在我的视图中看到页码

Question

只想使用codeigniter为搜索结果添加分页，但在我的视图中看不到任何页码。请帮我找出错误。

这是我的控制器：

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Filter extends MX_Controller {

    public function index() { 

        $this->load->view("view_filter");
    }

 public function search($offset = 0) { 
            $limit = 3; 

            $this->load->library('form_validation');
            $this->load->model('model_filter');

            $this->form_validation->set_rules('country', 'Country','required');       

            if($this->form_validation->run()) {

            if ($results = $this->model_filter->did_filter($limit, $offset)){ 

            $data['results'] = $results['rows']; 
            $data['num_results'] = $results['num_rows'];             

            $this->load->library('pagination'); 
            $config = array();
            $config['base_url'] = site_url('filter/search/');
            $config['total_rows'] = $data['num_results'];
            $config['per_page'] = $limit;
            $config['uri_segment'] = 3;
            $this->pagination->initialize($config);
            $data['pagination'] = $this->pagination->create_links();

            $this->load->view("view_search_results",$data); 

            }
            else {
            $data['message'] = 'No listings are available yet.';            
            $this->load->view("view_no_search_results",$data);          
            }          
            }
            else
            {
            $data['message'] = 'Please select your search options.';
            $this->load->view("view_no_search_results",$data); 
             }
        }

}

这是我的模特：

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');

class Model_filter extends CI_Model {

  function __construct()
 {
     parent::__construct();
 }

public function did_filter($limit, $offset) { 

    $this->db->select('*');
    $this->db->from('table');   
    $this->db->where('country', $this->input->post('country'));
    $this->db->limit($limit, $offset);
    $query = $this->db->get();


    if ($query && $query->num_rows() > 0) {
        $return['rows'] = $query->result_array(); 
        $return['num_rows'] = $query->num_rows();
        return $return; 
    } else {
        return false;
    }
}   
}

以下是我的观点：

<div><?php if (strlen($pagination)) {echo 'Pages:'. $pagination;} ?> </div> 

          <?php                
                 foreach($results as $row){
                    $country = $row['country'];
                    echo $country; }
            ?>