codeigniter CRUD操作与搜索和用户定义per_page

Question

我正在设计一个页面，将有一个设施来搜索和显示结果到一个表与分页和用户可以自由地选择每页显示的行数。

控制器包含以下功能：

settings_admin.php

function view_company(){ 
     $this->check_logged_in(); 
     $this->load->library('table'); 
     $this->load->library('pagination'); 
     $fields = $this->db->list_fields('company'); 
     $this->table->set_heading($fields); 

     $field_to_search = 'all'; 
     if(isset($_POST['company_cols'])){ 
      $field_to_search = $_POST['company_cols']; 
     } 

     if(isset($_POST['search_text'])){ 
      $first=true; 
      $search_text = $_POST['search_text']; 
      if($field_to_search == 'all' && $search_text!=''){ 
       foreach ($fields as $field){ 
        if($first){ 
         $this->db->like($field,$search_text); 
         $first=false; 
        }else{ 
         $this->db->or_like($field,$search_text); 
        } 
       } 
      }else if($search_text!=''){ 
       $this->db->like($field_to_search,$search_text); 
      } 
     } 

     if(isset($_POST['num_of_rows'])){ 
      $config['per_page'] = $_POST['num_of_rows']; 
      $this->session->set_userdata('rows_per_page', $_POST['num_of_rows']); 
     }else if($this->session->userdata('rows_per_page')!=null){ 
      $config['per_page'] = $this->session->userdata('rows_per_page'); 
     }else{ 
      $config['per_page'] = 10; 
     } 
     $result = $this->db->get('company',$config['per_page'], $this->uri->segment(3)); 

     $config['total_rows'] = $this->db->get('company')->num_rows(); 
     //$config['total_rows'] = $result->num_rows(); 

     $config['base_url'] = site_url('/settings_admin/company'); 
     $config['num_links'] = 5; 
     $config['full_tag_open'] = '<div id="pagination">'; 
     $config['full_tag_close'] = '</div>'; 
     $config['records'] = $result; 
     $this->pagination->initialize($config); 
     //var_dump($config); 
     //var_dump($_POST); 
     $config['num_of_rows'] = $config['per_page']; 
     $this->load->view('admin/view/company',$config); 
    } 

查看如下：

company.php

<?php 
    $data = array(
     'title' => 'Company', 
     'form_action' => 'settings_admin/company' 
    ); 
?> 

<?php $this->load->view('includes/header',$data); ?> 
<?php $this->load->view('sidebar_admin_controls'); ?> 

<div class="content"> 
    <h3>Companies</h3> 
    <div align='right'> 
     Search: 
     <input style="width:15em;" type="text" name="search_text" 
     value="<?php echo set_value('search_text'); ?>" placeholder="search company details"/> 
     in 
     <select name="company_cols"> 
      <option value='all'>all</option> 
      <?php 
       $fields = $this->db->list_fields('company'); 
       foreach ($fields as $field){ 
        echo "<option value='$field'>$field</option>"; 
       } 
      ?> 
     </select> 
     <input type="submit" name="search" value="Search"/> 
    </div> 
    <div align='left'> 
     <?php 
      if(!isset($num_of_rows)){ 
       $num_of_rows = 10; 
      } 
     ?> 
     Rows per page: <input style="width:4em;" type="text" name="num_of_rows" value=<?php echo $num_of_rows;?> placeholder="rows"/> 
     <input type="submit" name="search" value="Go"/> 
    </div> 
    <div class="view_table" id="view_table"> 
     <?php 
      echo $this->table->generate($records); 
     ?> 
    </div> 
    <?php 
     echo "<br/>"; 
     echo $this->pagination->create_links(); // can run and show me the ok.. 
     // when i press on page link, it goes back to default #of rows per page (10) 
    ?> 
    <br/> 
    <div align="center" id="option_buttons"> 
     <input type="submit" name="add" value="Add New"/> 
     <input type="submit" name="update" value="Update"/> 
     <input type="submit" name="delete" value="Delete"/> 
     <input type="submit" name="print" value="Print"/> 
    </div> 

</div><!-- end .content --> 
<?php $this->load->view('includes/footer'); ?> 

当我输入行数并按GO按钮时，它会返回所需的分页数，但页面链接数不等于所需的分页数。例如如果搜索只返回一行，它会在没有任何页面链接的情况下显示在表格中。但在我的情况下，它显示单行（搜索结果）以及所有页面链接（等于total_rows/per_page）。

这可能是由于total_rows被设置为$config['total_rows'] = $this->db->get('company')->num_rows();，这实际上应该是搜索结果的编号。

但是，如果我需要添加代码中给出的查询参数（例如'where'子句），我该如何设置它？

Answer 1

在这种情况下，您可以使用此代码。首先添加这个库来构建你的控制器。

看到人口统计学

类欢迎扩展是CI_Controller {

function __construct() 
{ 
    parent::__construct(); 
    $this->load->model('common_model', 'Common_model', true); 
    $this->load->library('pagination'); 
} 

那么在您创建的任何功能，在这里，我创建一个函数名 “bill_list”

public function bill_list() 
{ 
    /******** pagination ********/ 
     $pageNo = $this->uri->segment(2, 0); 
     $data['page_no'] = $pageNo; 
     $config['uri_segment'] = 2; 
     $config['base_url'] = BASEURL . 'bill_list'; 

     //get the total count list 
     $config['total_rows'] = $this->Common_model->count_list('lading_bill'); 
     $config['per_page'] = 20; //per page limit 
     $this->pagination->initialize($config); 
     $data['pagination'] = $this->pagination->create_links(); 
     $startLimit = ($pageNo) ? $pageNo : 0; 
     $per_page = $config['per_page']; 
    /******** pagination ********/ 

     //get the list with start limit and per page. 

     // here 'lading_bill' is table name 
    $data['bill_list'] = $this->Common_model>get_all_list('lading_bill',$startLimit, $per_page); 


    $data['mainContent'] = $this->load->view('bill_list', $data, true); 
    $this->load->view('template', $data); 
} 

然后只需添加$分页变量给你bill_list查看页面。

你可以复制粘贴这段代码。并请检查分页库是否可用在库文件夹中。而已。

Answer 2

为此，您需要在通用模型中的两个功能 -

// return total row result. 
function count_list($table) 
{ 
    $sql = "SELECT COUNT(*) AS result_count FROM $table"; 
    $result = $this->db->query($sql)->row_array(); 
    return $result['result_count']; 
} 



//Search Total Result Using Pagination 
function get_all_list($table_name, $startLimit = NULL, $per_page = NULL) 
{ 
    if (isset($startLimit)) 
     $this->db->limit($per_page, $startLimit); 

    $result = $this->db->get($table_name)->result_array(); 
    return $result; 
} 

Answer 3

尽量给机会GroceryCRUD：http://www.grocerycrud.com/