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我正在向我的应用程序添加一项功能，用户可以在其中一一删除从朋友那里收到的消息。我在我的消息模型中添加了一个 deleteMessage 函数。然后我在我的家庭控制器的删除函数中调用它。在我的主页视图上，我应该能够通过按“删除”来删除消息。目前没有任何反应。然后，这也会在消息数据库中为他们删除这个特定的内容。db 表包含字段 from、to 和 message。再次感谢您的帮助

我的家庭控制器：

class Home extends CI_Controller 
{
function Home()
{   
     parent::__construct();
     $this->load->model('messages');
     $this->load->model('friends');
     $this->load->model("profiles");
}


  function delete($message)
 {
$username = $this->session->userdata('username');
$this->messages->deleteMessage($from, $to, $message);
redirect('home');
 }


function index()
{

 $username = $this->session->userdata('username');
 $membername = $this->session->userdata('membername');
 $viewData['membername'] = $membername;
 $viewData['username'] = $username;
 $viewData['following'] = $this->friends->getFollowing($username);
 $viewData['followers'] = $this->friends->getFollowers($username);
 $viewData['messages'] = $this->messages->getMessages($membername);
 $viewData['friends'] = $this->friends->getFriends($username);


 $this->load->view('shared/header');
 $this->load->view('home/hometitle', $viewData);
 $this->load->view('shared/nav');
 $this->load->view('home/homeview', $viewData);
 $this->load->view('shared/footer');
}
 }

消息模型：

class Messages extends CI_Model
{



function Messages()
{
parent::__construct();
}



function deleteMessage($from, $to, $message)
{
   $this->db->select('*')->from('messages')->where('from', $from)->where('to', $to)->where('message', $message);
   $this->db->delete();
  }

}

主页视图：

    <h2> Messages</h2> 
    <ul> 
      <?php foreach($messages as $message):?>
          <li><?=$message['from']?> says...: "<?=$message['message']?>"(<?=anchor("home/delete/$message", 'delete')?>)</li>      
         <?php endforeach?>    
    </ul>      
  </div>
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