【问题标题】:Codeigniter - How to fetch datatable data from ajax?Codeigniter - 如何从 ajax 获取数据表数据?
【发布时间】:2017-07-30 13:57:45
【问题描述】:

我正在开发一个基于 CodeIgniter 的应用程序。代码如下:

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();
        }
    } );
} );

以上代码运行良好。

现在,我想通过 ajax 请求将数据提取到 table id="parameter" 中。我已经从 url 创建了一个 ajax 请求,让我们说从这里http://'+host+path+'/action/ambil,其中var path = window.location.pathname;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datatable,以及如何将数据显示到表中,以便我可以使用数据创建链接,如代码
&lt;a href="&lt;?=set_url('parameter/parameter_view/'.$row['parameter_ID']);?&gt;"&gt;

【问题讨论】:

    标签: javascript php ajax codeigniter datatables


    【解决方案1】:

    你可以通过server side脚本来做dataTable如下。

    1. 更改您的控制器,使其能够处理来自数据表的服务器端调用,并且您只能在控制器中创建动态链接。我已在控制器中添加评论以获取更多详细信息。
    2. 更改您的脚本以使用 ajax 调用它。
    3. 在加载页面时不要在视图 tbody 中加载任何东西。
    4. 注意:我已经跳过了我使用直接查询的模型部分。希望你能改变它。

    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);
            }
        }
    

    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>
        /** 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>
    

    如果你想使用一些第三方库check this。 对于您的模型查询,您可以按照this post 中的说明对其进行自定义。

    【讨论】:

    • 抱歉回复晚了,我会根据您的回答尝试实施。
    【解决方案2】:

    您可以查看此article。虽然我是使用原始 php 编写的,但您可以通过使用该 ssp 类创建一个单独的库来轻松实现它,并且可以创建这种类型的链接。

    【讨论】:

    • 有没有其他方法我们不需要创建单独的文件?
    【解决方案3】:

    更新了更多解释和更多代码

    你可以试试我的代码,这对我来说很好。

    控制器代码

    public function showFeeCode()
    {
        $data = $this->fmodel->fetchAllData('*','fee_assign',array());
        if (is_array($data) || is_object($data))
        {
            foreach ($data as $key => $value) {
                $button = "";
                $button .= "<button class='btn btn-success fa fa-pencil' onclick='editFunction(".$value['id'].")' data-toggle='tooltip' title='Edit Details'></button> ";
                $result['data'][$key] = array(
                        $value['feegroup'],
                        $value['name'],
                        $button
                         );
            }
        }
        echo json_encode($result);
    }
    

    模式代码

    public function fetchAllData($data,$tablename,$where)
        {
            $query = $this -> db 
                            ->where($where)
                            -> get($tablename);
                                
        if($query->num_rows() > 0){
                return $query->result_array();
            }
            else{
                return array('error');
            }
        }
    

    查看代码(表格)

    <table id="myTable" class="table display">
                          <thead class="alert alert-danger">
                              <tr>
                                  <th>Fee Type</th>
                                  <th>Fee Code</th>
                                  <th>Action</th>
                              </tr>
                          </thead>
                      </table>
    

    ajax 代码来获取 ajax 代码在视图页面中返回的数据。

    $(document).ready(function() {
      $('#myTable').dataTable( {
            "ajax":"<?= base_url('Fee/showFeeCode'); ?>",
            'order':[],
        });
      });
    

    如果你想将一些参数传递给控制器​​,那么你可以通过 ajax 传递它

     $(document).ready(function() {
    var id = 4;
      $('#myTable').dataTable( {
            "ajax":"<?= base_url('Fee/showFeeCode'); ?>/"+id,
            'order':[],
        });
      });
    

    您可以通过将参数传递给控制器​​函数来接收此 id。

    如果你想发送多个数据,那么你可以使用这种格式

    var first_data = 1;
    var second_data = 2;
    $('#myTable').dataTable( {
                "ajax": {
                "url": '<?php echo base_url('fetchData') ?>',
                "type": "POST",
                "data": {first_data:first_data,second_data:second_data}
                 },
                'order':[],
            });
          });
    

    【讨论】:

      【解决方案4】:

      型号代码

        public function get_cities(){
      
        $this->db->order_by('city_id','desc');
        $this->db->limit('1000');
        $this->db->select('*,cities.name as city_name');
        $this->db->from('cities');
        $this->db->join('states','states.id=cities.state_id','left');
        $this->db->join('countries','countries.id=states.country_id','left');
        $data=$this->db->get();
        return $data->result_array();
        }
         private function get_datatables_query_city(){
          $column_search = array('cities.name','states.name','countries.country_name');
          $order = array('city_id' => 'desc');
          $column_order = array(null, 'city_name', 'sname', 'country_name', null);
          $this->db->select('cities.city_id,cities.name as city_name,states.name as sname,states.id as state_id,countries.id as country_id,countries.country_name');
           $this->db->from('cities');
           $this->db->join('states','states.id=cities.state_id','left');
           $this->db->join('countries','countries.id=states.country_id','left');
           $i = 0;
           foreach ($column_search as $item)
           {
              if($_POST['search']['value']) // if datatable send POST for search
                  {
                      if($i===0)
                      {
                          $this->db->group_start();
                          $this->db->like($item, $_POST['search']['value']);
                      }
                      else
                      {
                          $this->db->or_like($item, $_POST['search']['value']);
                      }
                      if(count($column_search) - 1 == $i)
                      $this->db->group_end();
              }
              $i++;
          }
          if(isset($_POST['order']))
          {
              $this->db->order_by($column_order[$_POST['order']['0']['column']], $_POST['order']['0']['dir']);
          }
          else if(isset($order))
          {
              $order = $order;
              $this->db->order_by(key($order), $order[key($order)]);
          }
      }
      function get_datatables_city()
      {
          $this->get_datatables_query_city();
          if($_POST['length'] != -1)
              $this->db->limit($_POST['length'], $_POST['start']);
          $query = $this->db->get();
          return $query->result();
      }
      function count_filtered_city()
      {
          $this->get_datatables_query_city();
          $query = $this->db->get();
          return $query->num_rows();
      }
      public function count_all_city()
      {
          $this->db->from('cities');
          return $this->db->count_all_results();
      } 
      

      控制器代码

       public function city_list(){
              $this->load->view('admin/header');
              $this->load->view('admin/city');
              $this->load->view('admin/footer');
          }
          public function city_ajax(){
              $list = $this->Admin_model->get_datatables_city();
              $data = array();
              $no = $_POST['start'];
              foreach ($list as $city){
                  $no++;
                  $row = array();
                  $row[] = $no;
                  $row[] = $city->city_name;
                  $row[] = $city->sname;
                  $row[] = $city->country_name;
                  $row[] = '<div class="d-flex align-items-center card-action-wrap">
                  <div class="inline-block dropdown">
                  <a class="dropdown-toggle no-caret" data-toggle="dropdown" href="#" aria-expanded="false" role="button"><i class="ion ion-ios-more"></i></a>
                  <div class="dropdown-menu dropdown-menu-right" x-placement="top-end" style="position: absolute; transform: translate3d(-214px, -161px, 0px); top: 0px; left: 0px; will-change: transform;">
                  <a class="dropdown-item" href="'.base_url().'Adminhome/city_edit/'.$city->city_id.'" ><i class="fas fa-edit read-icon"></i> Edit</a>
                  <a id="mybutton" href="javascript:void(0);" onclick="citydelete('.$city->city_id.')" class="dropdown-item text-danger remove"  data-toggle="modal" data-target="#delete" data-id="'.$city->city_id.'"><i class="fas fa-trash-alt read-icon text-danger"></i> Delete</a>
                  </div>
                  </div>
                  </div>';
                  $data[] = $row;
              }
              $output = array(
                  "draw" => $_POST['draw'],
                  "recordsTotal" => $this->Admin_model->count_all_city(),
                  "recordsFiltered" => $this->Admin_model->count_filtered_city(),
                  "data" => $data,
              );
              echo json_encode($output);
          }
      

      查看代码

                  <div class="section-body">
                      <div class="row">
                          <div class="col-12">
                              <div class="card">
                                  <div class="card-body">
                                      <div class="table-responsive">
                                          <table class="table table-striped" id="example">
                                              <thead>
                                                  <tr>
                                                      <th>Sr.Number</th>
                                                      <th>City Name</th>
                                                      <th>State Name</th>
                                                      <th>Country</th>
                                                      <th>Manage</th>
                                                  </tr>
                                              </thead>
                                          </table>
                                      </div>
                                  </div>
                              </div>
                          </div>
                      </div>
                  </section>
              </div>
          </div>
          <div class="modal fade" id="delete" tabindex="-1" role="dialog" aria-labelledby="exampleModalCenterTitle" aria-hidden="true">
              <div class="modal-dialog modal-dialog-centered" role="document">
                  <div class="modal-content">
                      <div class="modal-body">
                          Are you sure want to delete.
                      </div>
                      <div class="modal-footer bg-whitesmoke br">
                          <a id="confirm-button"> <button type="button" class="btn btn-danger">Delete</button></a>
                          <button type="button" class="btn btn-secondary" data-dismiss="modal">Cancel</button>
                      </div>
                  </div>
              </div>
          </div>
          <div class="alert alert-primary show2" role="alert" id="snackbar2" style="visibility: hidden">
              Successfully Deleted
          </div>
          <script>
              function citydelete(id){
                  $('#delete').modal('show');
                  rowToDelete = $(this).closest('tr');
                  $('#confirm-button').click(function(){
                       $.ajax({
                          url: '<?php echo base_url();?>/Adminhome/city_delete',
                          type: 'GET',
                          data: {id: id},
                          success: function (data){
                              $("#"+id).remove();
                              var table = $('#example').DataTable();
                              table.ajax.reload( null, false );
                              $("#delete").modal('hide');
                              document.getElementById("snackbar2").style.visibility = "visible";
                              setTimeout(function() {
                                  document.getElementById('snackbar2').style.visibility = 'hidden';
                              }, 3000);
                          }
                      });
                      })
              }
          </script>
          <script type="text/javascript">
              var table;
              $(document).ready(function() {
                  table = $('#example').DataTable({ 
                      "processing": true,
                      "serverSide": true,
                      "stateSave": true,
                      "order": [],
                      "ajax": {
                          "url": "<?php echo site_url('Adminhome/city_ajax')?>",
                          "type": "POST"
                      },
                      "columnDefs": [
                      { 
                          "targets": [ 0 ],
                          "orderable": false,
                      },
                      ],
                  });
              });
          </script>   
      

      【讨论】:

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