如何在 Codeigniter 中创建分页？答案

【问题标题】：How to create Pagination in Codeiginter?如何在 Codeigniter 中创建分页？
【发布时间】：2014-05-30 20:35:24
【问题描述】：

我是 codeigniter 的新手，我正在尝试对从数据库中获取的记录创建分页。我编写了以下代码，它显示了分页，但它不影响结果集，我仍然在同一页面上保留所有记录，当我点击Page2 时，它显示no page found。

请指导我如何创建分页？

型号

public function students_list()
{


    $this->db->select('*');
    $this->db->from('student'); 

    $this->db->limit($limit,$start);                

    $query= $this->db->get();

    return $query->result();

    }

控制器

public function all_students()
{

    //Pagination    
            $this->load->library('pagination');

            $config['base_url'] = base_url().'mycontroller/all_students/';
            $config['total_rows'] = 200;
            $config['per_page'] = 5;

            $this->pagination->initialize($config);

            echo $this->pagination->create_links(); 

    //Pagination

    $this->load->model('loginmodel');
    $data['students_data']= $this->loginmodel->students_list();
    $data['dropdown']=      $this->loginmodel->get_degree_names();

    $this->load->view('all_students', $data);

}

查看

<?php
include 'header.php';
include 'sidebar.php';


$this->pagination->create_links();
?>
<?php 

foreach($students_data as $teachers_records)
{
    ...
     ....

【问题讨论】：

很多关于分页的问题
我已经检查了大部分，但仍然无法理解为什么它在这里不起作用
我只是举个例子，根据你的回答转换
在你的代码中你没有设置限制来生成分页
请根据我的回答改写

标签： php html mysql codeigniter pagination

【解决方案1】：

首先我建议创建一个辅助函数来像这样配置您的分页。您必须从 codeigniter 文档中了解配置中的选项目的

if (!function_exists('getPaginationConfig')) {
    function getPaginationConfig($url,$total_row,$per_page,$num_links=3){
            $config = array();
            $config['use_page_numbers'] = TRUE;
            $config['uri_segment'] = 3;// depends on how you passing your page number
            $config['base_url'] = $url;
            $config['total_rows'] = $total_row;
            $config['per_page'] = $per_page; 
            $config['full_tag_open'] = '<ul>';
            $config['full_tag_close'] = '</ul>';
            $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['next_tag_open'] = '<li>';
            $config['next_tag_close'] = '</li>';
            $config['prev_tag_open'] = '<li>';
            $config['prev_tag_close'] = '</li>';
            $config['first_link'] = '&lt;&lt;';
            $config['first_tag_open'] = '<li>';
            $config['first_tag_close'] = '</li>';
            $config['last_link'] = '&gt;&gt;';
            $config['last_tag_open'] = '<li>';
            $config['last_tag_close'] = '</li>';
            $config['num_links'] = $num_links;

     return $config;        
   }
}

现在在控制器上..您需要从数据库中获取总行数并在分页中设置每页并使用配置调用这是控制器功能的示例

 function getMyList($page){
        $limit = YOUR_PAGE_LIMIT;//may be some global variable or input from frontend
        $starting = ($page-1)*$limit;

        $data['results']  = $this->your_model->getListOfTable($where,$limit,$starting);
        $total_rows = $this->your_model->getTotalRowsOfTable($where);// where is filter condition

        $this -> load -> helper('your_helper');// where yours getPaginationConfig is defined
        $this -> load -> library('pagination');
        $this -> pagination -> initialize(getPaginationConfig(site_url('controller/function'), $total_rows,$limit));
        $data['pagination'] = $this -> pagination -> create_links();
        $this->load->view('yourview',$data);

你的模型可能看起来像这样

function getListOfTable($where = array(), $limit, $starting = 0) {
        $this -> db -> select('*');
        // <-- There is never any reason to write this line!
        $this -> db -> from('your_tables');
        if (!empty($where))
           $this -> db -> where($where);
        $this -> db -> limit($limit, $starting);
        $query = $this -> db -> get();

        if ($query -> num_rows() > 0) {
            return $query -> result();
        } else {
            return FALSE;
        }
    }

function getTotalRowsOfTable($where = array()){
    if (!empty($data))
         $this -> db -> where($where);
    $this -> db -> from('your_table');
    return $this -> db -> count_all_results();

}

现在 On View 你只需要在你喜欢的地方回显分页

  <div id="pagination"><?php echo $pagination;?></div>

【讨论】：

【解决方案2】：

控制器：

public function all_students() 
 {      $this->load->model('loginmodel');
        $config['anchor_class'] = '';
        $config['show_count'] = true;
        $config['base_url'] = site_url('controllername/all_students');
        $config['total_rows'] = sizeof($this->loginmodel->students_list());

        $data['students_data']= $this->loginmodel->students_list();
        $data['dropdown']=      $this->loginmodel->get_degree_names();
        $config['per_page'] = 10;
        $this->jquery_pagination->initialize($config);
        $data['links'] = $this->jquery_pagination->create_links();
        $data['page'] = ($this->uri->segment(3)) ? $this->uri->segment(3) : 0;
        $data['details'] = $this->loginmodel->students_list($config['per_page'], $data['page']);
        $this->load->view('all_students', $data);
    }

型号

public function students_list($limit=NULL,$start=NULL)
{


    $this->db->select('*');
    $this->db->from('student'); 

    $this->db->limit($limit,$start);                

    $query= $this->db->get();

    return $query->result();

 }

【讨论】：

非常感谢..我已经用你的代码替换了我的代码，现在它在我的 Model A PHP Error was encountered Severity: Notice Message: Undefined variable: start Filename: models/loginmodel.php Line Number: 582 中给了我以下错误消息
我已经在我的问题中添加了模型代码...请检查它
错误依然存在..A PHP Error was encountered Severity: Warning Message: Missing argument 1 for Loginmodel::students_list(), called in F:\xampp\htdocs\University\application\controllers\mycontroller.php on line 613 and defined Filename: models/loginmodel.php Line Number: 590
模型功能略有变化
@AdarshMPallickal 为什么你在控制器中查询两次？我建议把它放在一个变量上使用它。并且 sizeof 返回当前结果的总和 .. 不是表中的所有行

【解决方案3】：

为了更好地使用分页，请在您的助手中创建一个函数。这对您将来的使用非常有用。你永远不需要加载库和其他值。在您的助手中修复此功能。

if( ! function_exists('createPaginationForm')) {
    function createPaginationForm($url, $totalRows, $perPage, $segment, $queryString = '', $config = array()) {
        $CI =& get_instance();
        $CI->load->library('pagination');
        $config['base_url'] = base_url().$url;
        $config['total_rows'] = $totalRows;
        $config['per_page'] = $perPage;
        $config['uri_segment'] = $segment;
        $CI->pagination->initialize($config);
        return $CI->pagination->create_links($queryString);
    }
}

并在您的控制器中使用。

var $perPage = '10';
var $segment = '4';
$total_result = "50";
$pagination = createPaginationForm('admin/news/index/',$total_result ,$this->perPage, $this->segment);
$this->data['pagination'] = $pagination;

并在您的视图中打印。

echo $pagination

【讨论】：

【解决方案4】：

您需要一些数据在分页使用查询中显示此和$config['total_rows']，因此它将显示带有 5 条记录的总结果分页

在我的情况下，我使用 $this->Account->search_users($where,false, false,false,true,false); 是一个模型函数，将返回结果数组

return $query->result_array();

控制器：-

      $this->load->library('pagination');   
    $config['total_rows'] = $this->Account->search_users($where,false, false,false,true,false);
    $config['per_page']= 5;
    $config['uri_segment'] = 3;
    $config['base_url']= base_url().'/app/index'; 
    $config['suffix'] = '?'.http_build_query($_GET, '', "&"); 
    $this->pagination->initialize($config);
    $this->data['paginglinks'] = $this->pagination->create_links();     
    $this->data['per_page'] = $this->uri->segment(3);       
    $this->data['offset'] = $offset ;

查看：-

<div class="pagination" style="float:right;"> <?php echo $paginglinks; ?></div>

我的模型函数是：-

public function search_users($where = false, $num = false, $offset = false, $order_by = false, $count = false, $select = false , $table=false){

    if(!$select){$select = 'U.*';}

        if(isset($where['where']) && !empty($where['where'])) {
            $this->db->where($where['where']);
        }

        if($order_by){
            $this->db->order_by($order_by[0], $order_by[1]);
        }else{
            $this->db->order_by('U.u_id', 'DESC');
        }

        $query = $this->db->get($table . ' AS U');
        //print_r($this->db->last_query()).'<hr>';
        $recount = $query->num_rows;    
        if($count) {
            return $recount;    
        }

        if($recount > 0){
            return $query->result_array();
        }
        else{ 
            return false;
        }
    }

【讨论】：