Question

我正在尝试使用Codeigniter上的数据表服务器端处理来显示相同的数据。我应该使用＆＃39;其中＆＃39;条款和我正在使用Emran ul hadi脚本课程。（访问https://emranulhadi.wordpress.com/2014/06/05/join-and-extra-condition-support-at-datatables-library-ssp-class/#comment-196）。我的控制器脚本：

        $sql_details = array(
         'user' => 'root',
         'pass' => '',
         'db'   => 'kreatx',
         'host' => 'localhost'
       );

       $index = $this->uri->segment(3);
       $table = 'user';

       $columns = array(
         array('db' => 'Name', 'dt' => 0),
         array('db' => 'Lastname', 'dt' => 1),
         array('db' => 'Email', 'dt' => 2),
         array('db' => 'Username', 'dt' => 3),
         array('db' => 'Password', 'dt' => 4)
       );

       $primaryKey = 'ID';

       $this->load->model('employees_model');
       $department = $this->employees_model->get_department($index);

       require( 'SSP.php' );
       $where = 'Department = '.$index.'';
       echo json_encode(
         SSP::complex( $_GET, $sql_details, $table, $primaryKey, $columns, 
                      null ,$where )
        );

我的观点脚本：

    $('#employees').DataTable({
       "responsive":true,  
       "processing":true,  
       "serverSide":true,
       "searching":true,
       "ordering":true, 
       "order":[],  
       "ajax":{  
            url:"<?php echo base_url() . 
                 'employees/get_employees/'.$index.''; ?>",  
            type:"POST"  
       },
       "columnDefs":[  
            {  
                 "targets":[4],  
                 "orderable":false,  
            },  
       ],
       });

表格显示正确，没有错误。但搜索和订单确实无效。如果我尝试搜索它只是说prrocessing并显示相同的表。订购也有同样的问题。有什么想法吗？谢谢！

Answer 1

在脚本上，将“服务器端”参数设置为“真”

这意味着所有过滤和排序都必须在您的php脚本中。每当您更改顺序或尝试应用过滤器时，dataTables javascript都会向您在ajax参数下列出的php页面发送ajax调用。 Ajax调用将包含您可以解析的get或post变量中所需的所有内容。

您需要用php编写代码以解析URL参数并动态创建一个SQL查询来过滤数据库结果。

我以前没有在Codeignitor中完成此操作，但这只是我在Laravel中尝试使用的简单示例（请注意，您需要对自己的数据库列进行硬编码，或者如果您是高级用户，则可以将代码循环到数据库列名称的数组）

    public function MyExampleJson(Request $request)
  {
    $len = $_GET['length'];
    $start = $_GET['start'];
    $select = "SELECT *,1,2 ";
    $presql = " FROM entities a ";
    $whereused = false;
    if($_GET['search']['value']) {
      $presql .= " WHERE (id LIKE '%". $_GET['search']['value']."%' ";
      $presql .= " OR column01 LIKE '%". $_GET['search']['value']."%' ";
      $presql .= " OR column02 LIKE '%". $_GET['search']['value']."%' ";
      $presql .= " OR column03 LIKE '%". $_GET['search']['value']."%' ";
      $presql .= " OR column04 LIKE '%". $_GET['search']['value']."%' ";
      $presql .= ") ";
      $whereused = true;
    }

    $orderby = "";
    $columns = array('column01','column02','column03','column04');
    $order = $columns[$request->input('order.0.column')];
    $dir = $request->input('order.0.dir');
    $columnsearcharray = $request->columns;

    foreach ($columnsearcharray as $key => $value)
    {
      if ($value['search']['value']) {
        if ($whereused) {
          $presql .= " AND ";
        } else {
          $presql .= " WHERE ";
          $whereused = true;
        }
        $presql .= $columns[$key] . " LIKE '%" . $value['search']['value'] . "%' ";
      }
    }
    $orderby = "Order By " . $order . " " . $dir;
    $sql = $select.$presql.$orderby." LIMIT ".$start.",".$len;
    $qcount = DB::select("SELECT COUNT(a.id) c".$presql);
    $count = $qcount[0]->c;
    $results = DB::select($sql);
    $ret = [];
    foreach ($results as $row) {
      $r = [];
      foreach ($row as $value) {
        $r[] = $value;
      }
      $ret[] = $r;
    }
    $ret['data'] = $ret;
    $ret['recordsTotal'] = $count;
    $ret['iTotalDisplayRecords'] = $count;
    $ret['recordsFiltered'] = count($ret);
    $ret['draw'] = $_GET['draw'];
    echo json_encode($ret);
  }

Serach和订购不工作Datatables服务器端处理（Codeigniter）？

1 个答案: