如何在数据表中创建自定义过滤器选项框，Codeigniter

Question

如何在数据表中创建自定义数据过滤器？，

如果我在选项框中选择其中一行：

那么datatables会在datatables中显示选项框的值：

这是我想要在自定义搜索中使用的示例：

终于我的自定义搜索成功了

我在数据库中显示与表部门连接的数据（部门）

在我的数据表中，我在数据库中使用了表 emp

这是我的代码选项框

<div class="row">
    <div class="col-md-6">
      <form action="<?=site_url('proses/pindah_departemen');?>" method="get">
        <div class="panel panel-primary">
            <div class="panel-heading">Filter Data</div>
            <div class="panel-body">
                <table class="table table-bordered">
                    <tr>
                        <td width="20%">Pilih Departemen</td>
                        <td width="30%">
                            <select class="form-control" name="filter_departemen">
                                <option value="" <?php if(empty($this->input->get('filter_departemen'))) echo 'selected';?>>Show All data</option>
                                <?php
                                foreach($groups as $city)
                                {
                                    $selected = $this->input->get('filter_departemen')==$city['dept_id_auto'] ? 'selected':'';
                                    echo '<option value="'.$city['dept_id_auto'].'" '.$selected.'>'.$city['dept_name'].'</option>';
                                }
                                ?> 
                            </select>
                        </td>
                    </tr>
                </table>
            </div>
            <div class="panel-footer text-right">
                <button type="submit" class="btn btn-primary">Tampilkan Data</button>
            </div>
        </div>
      </form>
    </div>
  </div>

这是我的控制器命名（散文）：

public function pindah_departemen()
{
    $data = array(
        'title'     => 'Pindah Departemen',
        'data' => $this->Pindah_dept_model->GetSiswa($this->input->get('filter_departemen'))
    );

    $data['groups'] = $this->Pindah_dept_model->getAllGroups();

    $this->template->load('template','proses/pindah_departemen', $data);
}

我的模型命名为 (Pindah_dept_model)：

var $table = 'emp';

public function GetSiswa()
{
    /*i dont know exactly  your query. please fix this is this wrong*/
    $this->db->select(array('emp_id', 'first_name', 'nik', 'gender', 'pin', 'dept_name'))
        ->from('emp AS e')
        ->join('dept AS d','d.dept_id_auto = e.dept_id_auto', 'left');
    if(!empty($dep)) $this->db->where('d.dept_id_auto', $dep); 
    $data = $this->db->order_by('emp_id','ASC')->get();
    return $data->result_array();
}

public function getAllGroups()
{
    $query = $this->db->query('SELECT dept_id_auto,dept_name FROM dept');
    return $query->result_array();
}

Answer 1

您的过滤器 html

<div class="row">
    <div class="col-md-6">
        <form action="<?=site_url('proses/pindah_departemen');?>" method="get">
            <div class="panel panel-primary">
                <div class="panel-heading">Filter Data</div>
                <div class="panel-body">
                    <table class="table table-bordered">
                        <tr>
                            <td width="20%">Pilih Departemen</td>
                            <td width="30%">
                                <select class="form-control" name="filter_departemen">
                                    <option value="" <?php if(empty($this->input->get('filter_departemen'))) echo 'selected';?>>Show All data</option>
                                    <?php
                                    foreach($groups as $city)
                                    {
                                        $selected = $this->input->get('filter_departemen')==$city['dept_id_auto'] ? 'selected':'';
                                        echo '<option value="'.$city['dept_id_auto'].'" '.$selected.'>'.$city['dept_name'].'</option>';
                                    }
                                    ?> 
                                </select>
                            </td>
                        </tr>
                    </table>
                </div>
                <div class="panel-footer text-right">
                    <button type="submit" class="btn btn-primary">Tampilkan Data</button>
                </div>
            </div>
        </form>
    </div>
</div>

你的控制器

public function pindah_departemen()
{
    // MASUKKAN PARAMETER DATA DISINI, BIASANYA HASIL DARI QUERY
    $data = array(
            'title'     => 'Pindah Departemen',
            'data' => $this->Pindah_dept_model->GetSiswa($this->input->get('filter_departemen'))
        );
    $data['groups'] = $this->Pindah_dept_model->getAllGroups();
    $this->template->load('template','proses/pindah_departemen', $data);
}

你的模型

var $table = 'emp';

public function GetSiswa($dep=NULL)
{
    $this->db->select(array('emp_id', 'first_name', 'nik', 'gender', 'pin', 'dept_name')) //or select(array('emp_id, first_name, nik, gender, pin, dept_name')
        ->from('emp AS e')
        ->join('dept AS d','d.dept_id_auto = e.dept_id_auto', 'left');
    if(!empty($dep)) $this->db->where('dept_id_auto', $dep);
    $data = $this->db->order_by('emp_id','ASC')->get();
    return $data->result_array();
}

public function getAllGroups()
{
    $query = $this->db->query('SELECT dept_id_auto,dept_name FROM dept');
    return $query->result_array();
}

public function get_by_id_siswa($id)
{
    $this->db->from($this->table);
    $this->db->where('emp_id',$id);
    $query = $this->db->get();

    return $query->row();
}

建议：下一次，请在再次构建新应用之前学习 jquery 和 ajax。

Answer 2

如果我正确理解了这个问题，您想从选择框中的“getAllGroup”函数上添加一个过滤器。如果我错了，请纠正我。

1. 您应该为选择添加一个名称，我将其命名为“dept_filter”。

   <div class="row">
     <div class="col-md-6">
       <div class="panel panel-primary">
           <div class="panel-heading">Filter Data</div>
           <form action="" method="post">
           <div class="panel-body">
                     <table class="table table-bordered">
               <tr>
                 <td width="20%">Pilih Departemen</td>
                 <td width="30%">
                   <select class="form-control" name="dept_filter">
                     <?php
                       foreach($groups as $city)
                       {
                           echo '<option value="'.$city['dept_id_auto'].'">'.$city['dept_name'].'</option>';
                       }
                     ?> 
                   </select>
                 </td>
               </tr>
             </table>          
           </div>
           <div class="panel-footer text-right">
             <input type="submit" class="btn btn-primary" value="Tampilkan Data">
           </div>
           </form>
         </div>
       </div>
     </div>
   

2. 在您的 Proses 控制器中：

   public function pindah_departemen()
   {
   
       //we take the current selected option (return false when none)
       $filter_dept = $this->input->post('dept_filter');
   
       //and we pass it to the model
       $data = array(
           'title'     => 'Pindah Departemen',
           'data' => $this->Pindah_dept_model->GetSiswa($filter_dept)
       );
       $data['groups'] = $this->Pindah_dept_model->getAllGroups();
   
       $this->template->load('template','proses/pindah_departemen', $data);
   }
   

3. 在您的模型中：我已将您的 sql 查询转换为 codeigniter 查询构建器语法。

       /*to avoid any conflict if this function is used anywhere else, 
       I made the param optionnal, so if there is none, 
       the filter is set to "false"*/
       public function GetSiswa($filter = FALSE)
       {
   
           $this->db->select();
           $this->db->from($this->table); //here "emp"
           //do the same join as your query
           $this->db->join('dept', 'debt.dept_id_auto = emp.dept_id_auto'); 
   
           //when the filter isn't false, we add a "where" condition
           if($filter){
               $this->db->where("dept_id_auto", $filter);
           }
   
           $this->db->order_by("emp_id", "DESC");
   
           $query = $this->db->get();
   
           return $data->result_array();
       }
   

---

更新：代码已更新到当前问题。

Udpate2：在 SQL where 条件中将“dept_name”更改为“dept_id_auto”

**更新3：**通过添加表单标签修复HTML

如果你没有好的结果：

1. <select>...</select> 中有 <form> 吗？
2. 您是否在您的<form> 中使用method="post"？
3. 您能否检查您是否在控制器中收到发布数据 var_dump($this->input->post());
4. 能否通过添加行来检查 GetSiswa() 函数中当前运行的查询 echo $this->db->last_query(); 就在返回之前？