form_dropdown（）沒有在codeigniter中使用「name」屬性

Question

我正在使用form幫助程序類在codeigniter中創建表單。

但是使用'form_dropdown("medium_type",$medium_type,"Select Medium")'沒有使用name屬性，因此表單驗證在post之後不起作用。

誰能告訴我如何將名稱傳遞給元素。

function controller(){ 
    $this->load->helper(array('form', 'url')); 
      $this->load->library('form_validation'); 
      $this->data['medium_type'] = $this->field_enums('notifications', 'medium_type'); 
      $this->data['user_type'] = $this->field_enums('notifications', 'user_type'); 
          $this->form_validation->set_rules('medium_type', 'Medium Type', 'required'); 

      if ($this->form_validation->run() == FALSE) 
      { 
        $this->load->view('admin/notifications', $this->data); 
      } 
      else 
      { 
        $data = array(
        'title' => $this->input->post('title'), 
        'medium_type' => $this->input->post('mediun_type'), 
        ); 
        $this->notifications_m->insert($data); 

      } 
      $this->load->view('admin/notifications', $this->data); 
} 

---

形式代碼 ' 標題

     <div class="input-field col s12 m6 l6 margin-bottom-10px"> 
          <?php echo form_dropdown("medium_type",$medium_type);?> 
          <label for="medium_tyoe">Medium Type</label> 
          <?php echo form_error('medium_type'); ?> 
         </div> 

        <div class="input-field col s12 m12 l12 margin-bottom-10px"> 
          <?php echo $this->ckeditor->editor("content");?> 
          <?php echo form_error('content'); ?> 
         </div> 

         <div class="btn waves-effect waves-light col s8 m4 l4 offset-m4 offset-l4 offset-s2 "> 
          <?php echo form_submit(array('id' => 'submit', 'value' => 'Submit')); ?> 
        <i class="material-icons right">send</i> 
         </div> 
         </div> 
        </div> 
       <?php echo form_close();?>` 

Answer 1

在形式

$options = array(
     'option'   => 'Name', 
     'option2'   => 'Name2', 
); 

echo form_dropdown('medium_type', $options, 'option2'); 
echo form_error('medium_type'); # to show error 

在控制器

$this->form_validation->set_rules('medium_type', 'Medium Type', 'required'); 

if ($this->form_validation->run() == FALSE) 
{ 
    # load the form view 
} 
else 
{ 
    # Validation pass 
    $medium_type = $this->input->post('medium_type'); 

    echo $medium_type ; 
}