Codeigniter-如何从Ajax获取数据表数据？

龙令雪

2023-03-14

问题内容：

我正在基于CodeIgniter的应用程序。这里的代码：

控制器 ：

public function index(){
    $data = array(
            'record' => $this->Parameter_model->get_parameter('tbl_parameter')
        );
    $this->site->view('parameter', $data);
}

型号：

public function get_parameter($table){
    $query = $this->db->query("select * from $table order by 'parameter_ID' ASC");
    if($query->num_rows() > 0){
        foreach($query->result_array() as $row){
            $data[] = $row;
        }

        $query->free_result();
    }

    else{
        $data = NULL;
    }

    return $data;
}

查看：

<table id="parameter" class="listdata table table-bordered table-striped table-hover">
  <thead>
    <tr>
      <th class="text-nowrap">Parameter</th>
      <th class="text-nowrap">Method</th>
      <th class="text-nowrap">Type</th>
      <th class="text-nowrap">Action</th>
    </tr>
  </thead>
  <tbody>
    <?php if(!empty($record)):?>
      <?php foreach($record as $row):?>
        <tr align="center">
          <td class="text-nowrap"><a href="<?=set_url('parameter/parameter_view/'.$row['parameter_ID']);?>"><strong><?php echo $row['parameter_name'];?></strong></a></td>
          <td class="text-nowrap"><?php echo $row['parameter_method'];?></td>
          <td class="text-nowrap">
            <?php 
              if($row['parameter_type'] == "1"){
                echo "General";
              }
              else{
                echo "COA Only";
              }
            ?>
          </td>
          <td class="text-nowrap">
            <div>
              <a href="<?=set_url('parameter#edit?parameter_ID='.$row['parameter_ID']);?>" class="btn btn-warning btn-xs">Edit</a>
              <a href="<?=set_url('parameter/parameter_view/'.$row['parameter_ID']);?>" class="btn btn-success btn-xs">Lihat</a>
              <a href="<?=set_url('parameter#hapus?parameter_ID='.$row['parameter_ID']);?>" class="btn btn-danger btn-xs">Hapus</a>
            </div>
          </td>
        </tr>
      <?php endforeach;?>
    <?php endif;?>
  </tbody>
  <tfoot>
    <tr>
      <th class="text-nowrap">Parameter</th>
      <th class="text-nowrap">Method</th>
      <th class="text-nowrap">Type</th>
      <th class="text-nowrap">Action</th>
    </tr>
  </tfoot>
</table>

Javascript ：

// parameter
// Setup - add a text input to each footer cell
$('#parameter tfoot th').each( function () {
    var title = $(this).text();
    $(this).html( '<input type="text" style="width:100%;" title="Search "+title+'" placeholder="Search '+title+'" />' );
} );

// DataTable
var table = $('#parameter').DataTable({
    paging: true,
    searching: true,
    ordering: true,
    "order": [[ 0, "asc" ]],
    scrollX: true,
    scroller: true,
});

// Apply the search
table.columns().every( function () {
    var that = this;

    $( 'input', this.footer() ).on( 'keyup change', function () {
        if ( that.search() !== this.value ) {
            that
                .search( this.value )
                .draw();
        }
    } );
} );

上面的代码运行良好。

现在，我想table id="parameter"通过ajax请求将数据提取到。我已经从url创建了一个ajax请求，可以从这里http://'+host+path+'/action/ambil，where
var path = window.location.pathname;和进行说var host = window.location.hostname;。

Ajax响应产生：

{"record":[{"parameter_ID":"1","parameter_name":"pH","parameter_method":"(pH meter)","parameter_type":"1",{"parameter_ID":"2","parameter_name":"Viscosity","parameter_method":"(Brookfield-Viscometer)","parameter_type":"1"}]}

问题
如何使用Ajax数据源配置数据表，以及如何将数据显示到表中，所以我可以使用数据例如创建类似代码的链接
<a href="<?=set_url('parameter/parameter_view/'.$row['parameter_ID']);?>">

问题答案：

您可以按以下方式通过服务器端脚本执行dataTable
。

更改控制器，使其可以处理数据表中的服务器端调用，并且只能在控制器中创建动态链接。我在控制器中添加了注释，以获取更多详细信息。
更改脚本以使用ajax调用它。
加载页面时，请勿在视图tbody中加载任何内容。
注意：我已跳过直接查询使用的模型部分。希望您可以更改它。

控制器

public function index() {
        $data = array();
        if ($this->input->is_ajax_request()) {
            /** this will handle datatable js ajax call * */
            /** get all datatable parameters * */
            $search = $this->input->get('search');/** search value for datatable  * */
            $offset = $this->input->get('start');/** offset value * */
            $limit = $this->input->get('length');/** limits for datatable (show entries) * */
            $order = $this->input->get('order');/** order by (column sorted ) * */
            $column = array('parameter', 'method', 'type');/**  set your data base column name here for sorting* */
            $orderColumn = isset($order[0]['column']) ? $column[$order[0]['column']] : 'parameter';
            $orderDirection = isset($order[0]['dir']) ? $order[0]['dir'] : 'asc';
            $ordrBy = $orderColumn . " " . $orderDirection;

            if (isset($search['value']) && !empty($search['value'])) {
                /** creat sql or call Model * */
                /**   $this->load->model('Parameter_model');
                  $this->Parameter_model->get_parameter('tbl_parameter'); * */
                /** I am calling sql directly in controller for your answer 
                 * Please change your sql according to your table name
                 * */
                $sql = "SELECT * FROM TABLE_NAME WHERE column_name '%like%'" . $search['value'] . " order by " . $ordrBy . " limit $offset,$limit";
                $sql = "SELECT count(*) FROM TABLE_NAME WHERE column_name '%like%'" . $search['value'] . " order by " . $ordrBy;
                $result = $this->db->query($sql);
                $result2 = $this->db->query($sql2);
                $count = $result2->num_rows();
            } else {
                /**
                 * If no seach value avaible in datatable
                 */
                $sql = "SELECT * FROM TABLE_NAME  order by " . $ordrBy . " limit $offset,$limit";
                $sql2 = "SELECT * FROM TABLE_NAME  order by " . $ordrBy;
                $result = $this->db->query($sql);
                $result2 = $this->db->query($sql2);
                $count = $result2->num_rows();
            }
            /** create data to display in dataTable as you want **/

            $data = array();
            if (!empty($result->result())) {
                foreach ($result->result() as $k => $v) {
                    $data[] = array(
                        /** you can add what ever anchor link or dynamic data here **/
                         'parameter' =>  "<a href=".set_url('parameter/parameter_view/'.$v['parameter_ID'])."><strong>".$v['parameter_name']."</strong></a>",
                          'method' =>  "<a href=".set_url('parameter/parameter_view/'.$v['parameter_ID'])."><strong>".$v['parameter_name']."</strong></a>",
                          'parameter_type' =>  "<a href=".set_url('parameter/parameter_view/'.$v['parameter_ID'])."><strong>".$v['parameter_name']."</strong></a>",
                          'actions' =>  "<a href=".set_url('parameter/parameter_view/'.$v['parameter_ID'])."><strong>".$v['parameter_name']."</strong></a>"

                    );
                }
            }
            /**
             * draw,recordTotal,recordsFiltered is required for pagination and info.
             */
            $results = array(
                "draw" => $this->input->get('draw'),
                "recordsTotal" => count($data),
                "recordsFiltered" => $count,
                "data" => $data 
            );

            echo json_encode($results);
        } else {
            /** this will load by default with no data for datatable
             *  we will load data in table through datatable ajax call
             */
            $this->site->view('parameter', $data);
        }
    }

视图

   <table id="parameter" class="listdata table table-bordered table-striped table-hover">
  <thead>
    <tr>
      <th class="text-nowrap">Parameter</th>
      <th class="text-nowrap">Method</th>
      <th class="text-nowrap">Type</th>
      <th class="text-nowrap">Action</th>
    </tr>
  </thead>
  <tbody>
    /** tbody will be empty by default. **/
  </tbody>
  <tfoot>
    <tr>
      <th class="text-nowrap">Parameter</th>
      <th class="text-nowrap">Method</th>
      <th class="text-nowrap">Type</th>
      <th class="text-nowrap">Action</th>
    </tr>
  </tfoot>
</table>

脚本

 <script>
        $(document).ready(function() {
            $('#example').DataTable({
                url: '<?php base_url(); ?>controllerName/index',
                processing: true,
                serverSide: true,
                paging: true,
                searching: true,
                ordering: true,
                order: [[0, "asc"]],
                scrollX: true,
                scroller: true,
                columns: [{data: "parameter"}, {data: "method"}, {data: "parameter_type"}, {data: "action"}]
                /** this will create datatable with above column data **/
            });
        });
    </script>

如果您想使用某些第三方库，请选中此选项。为了您的型号查询，你可以自定义在提这个职位。

Codeigniter-如何从Ajax获取数据表数据？

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