我的分页代码不起作用

Question

这是我的分页代码。您的建议，谢谢。

控制器

                public function onSectorClick() {
                        $id = $_GET["id"];
                        $this->session->set_userdata('sub1category_id', $_GET['id']);
                        $this->session->set_userdata('sub1category_name', $_GET['name']);
                        $this->onSectorClickCopy();
                    }
                    public function onSectorClickCopy(){                            
                        $this->load->helper('url');                          
                        $data['ListMenuLevel1'] = $this->Categories_model->listsector1();
                        $config = array();
                        $config["base_url"] = base_url() . "index.php/welcome/onSectorClickCopy?id=".$this->session->userdata('sub1category_id')."&name=".$this->session->userdata('sub1category_name');
                        $total_row = $this->productdisplay_model->record_count($this->session->userdata('sub1category_id'));
                        $config['total_rows'] = $total_row;
                        $config['per_page'] = 20;
                        //$config['uri_segment'] = 3;
                        $config['use_page_numbers'] = TRUE;
                        //$config['page_query_string'] = TRUE;
                        //$config['reuse_query_string'] = FALSE;
                        $config['num_links'] = 1;
                        $config['cur_tag_open'] = '&nbsp;<a class="current">';
                        $config['cur_tag_close'] = '</a>';
                        $config['next_link'] = 'Next';
                        $config['prev_link'] = 'Previous';
                        $this->load->library('pagination');
                        $this->pagination->initialize($config);
                        /* if($this->uri->segment(3)){
                          $page = ($this->uri->segment(3)) ;
                          }
                          else{
                          $page = 1;
                          } */
                        $page = ($this->uri->segment(3) != '' ? $this->uri->segment(3) : 1);
                        //$offset = $config['per_page']*$page;
                        $offset = (($config['per_page']) * ($page - 1)) + 1;
                        $limit = $config['per_page'] * $page;
                        $data['sub1products'] = $this->productdisplay_model->sub1Productsmenu($this->session->userdata('sub1category_id'),$limit, $offset);
                        $str_links = $this->pagination->create_links();
                        $data["links"] = explode('&nbsp;', $str_links);
                        $this->load->view('productlist', $data);                           
                    }
                }

模型

            <?php
            class productdisplay_model extends CI_Model {
                function __construct() {
                    parent::__construct();
                }
             public function record_count($id) {
                    $this->db->select('*');
                    $this->db->from('sub1_category');
                    $this->db->where('main_categoryid_fk', $id);
                    $this->db->order_by("sub1_category.main_categoryid_fk ");
                    $query = $this->db->get();
                    return  $query->num_rows();                       
                }              
                public function sub1Productsmenu($id,$limit, $offset){                        
                    $this->db->select('*');
                    $this->db->from('sub1_category');
                    $this->db->where('main_categoryid_fk', $id);
                    $this->db->order_by("sub1_category.main_categoryid_fk ");
                    $this->db->limit($limit, $offset);
                    return $this->db->get()->result();                        
                }
                public function sub1Productfetch($id) {                        
                    $query = $this->db->select('product_image,sub1_category_name,product_description');
                    $this->db->from('sub3_category');
                    $this->db->join('sub2_category', 'sub3_category.sub2_categoryid_fk=sub2_category.id', 'left');
                    $this->db->join('sub1_category', 'sub2_category.sub1_categoryid_fk=sub1_category.id', 'left');
                    //$this->db->join('maincategory', 'sub1_category.main_categoryid_fk=maincategory.id', 'left');
                    $this->db->where('sub1_category.id',$id);
                    //$this->db->order_by('rand()');
                    $this->db->limit(1);              
                    return $this->db->get()->result();                  
                }
            }                

查看

     <div class="center">
                <ul class="pagination">
                     <?php
                    foreach ($links as $link) {
                        echo "<li>" . $link . "</li>";
                    }
                    ?>
                </ul>
            </div>   

Answer 1

这使您可以从URI字符串中检索信息

$this->uri->segment(n); // n=1 for controller, n=2 for method, etc

考虑此示例http://www.domainname.com/index.php/blog/language/php/function

它将返回

$this->uri->segment(1); // blog
$this->uri->segment(2); // language
$this->uri->segment(3); // php
$this->uri->segment(4); // function

根据您的URL：http：//localhost/terasukhintrade/index.php/welcome/onsectorclickcopy？

$ this-> uri->段（3）获取？//尝试调试自己

但是，在您的情况下，谁必须获取最后一个URI段。

替代1

$last = end($this->uri->segments); 
//Where, segments is a class variable.

替代2

$last = end($this->uri->segment_array());

替代3

$total = $this->uri->total_segments();
$last = $this->uri->segment($total);

将$page = ($this->uri->segment(3) != '' ? $this->uri->segment(3) : 1);更新为($this->uri->segment($total) != '' ? $this->uri->segment($total) : 1); // as per alternative 3