Question

我正在设计一个页面，它可以搜索结果并将结果显示到具有分页的表格中，并且用户可以自由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，但页面链接的数量与所需的不相等。例如如果搜索只返回一行，它会显示在表中而没有任何页面链接。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）。

这可能是因为total_rows被设置为$config['total_rows'] = $this->db->get('company')->num_rows();，实际上应该是搜索结果的数量。

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

Answer 1

在这种情况下，您可以使用此代码。首先添加此库以在控制器中构建。

参见演示 -

class welcome扩展了CI_Controller {

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

然后在你创建任何函数，在这里我创建一个函数名称＆＃34; bill_list＆＃34;

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);
}

然后只需将$ pagination变量添加到bill_list视图页面。

您可以复制粘贴此代码。请检查图书馆文件夹中是否有可用的分页库。就是这样。

Answer 2

为此，您需要在通用模型中使用两个功能 -

// 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

尝试给GroceryCRUD提供机会：http://www.grocerycrud.com/

codeigniter CRUD操作与搜索和用户定义的per_page

3 个答案: