Codeigniter - 错误 - 没有要更新的数据

我本来要更新数据库，但收到错误“没有要更新的数据”。这是我的脚本；

我创建了一个简单的切换来更新数据库。切换使用户处于活动状态 (is_active=1) 或非活动状态 (is_active=0)。我遇到的问题是，虽然对象从 1 更改为 0 或 0 更改为 1，但当我将其传递给模型时，它会返回错误“没有要更新的数据”。方法如下；

命名空间 App\Controllers\Admin；

使用应用程序\实体\用户；

类 Users 扩展了 \App\Controllers\BaseController { 私人$模型；

public function __construct()
{
    $this->model = new \App\Models\UserModel;
}



      public function toggle_user_is_active($id)
      {
      $users = $this->model->where('id', $id)->first();  // get the record

     // if the current user is ACTIVE, then set it to DEACTIVE
     if ($users->is_active == 1) {
         $users->is_active = 0; 
         $this->model->save($users));  // gives an error, nothing to update
         return redirect()->to('/Admin/Users/index')
                     ->with('info', 'Success - User deactivated');
     } else {
         // if the current used is ACTIVE(1), change to INACTIVE(0)
         $users->is_active = 1; 
         $this->model->save($users); // same error as above
         return redirect()->to('/Admin/Users/index')
                     ->with('info', 'Success - User Activated');
     }
 } // end method

 }

真正奇怪的是，这是另一种方法的副本，其工作原理如下：

 namespace App\Controllers\Admin;

 use App\Entities\CategoryEntity;
 use App\Entities\PostEntity;

class Post extends \App\Controllers\BaseController
{
private $model;

public function __construct()
{
    $this->model = new \App\Models\PostModel;
    $this->CategoryModel = new \App\Models\CategoryModel;
    $auth = new \App\Libraries\Authentication;
    $this->current_user = $auth->getCurrentUser();
}

public function toggle_post_is_published($post_id)
{
    $post = $this->model->where('post_id', $post_id)->first();
    // if the current post is PUBLISHED, then set it to UNPUBLISHED
    if ($post->post_is_published == 1) {
        echo
        $post->post_is_published = 0;
        $this->model->save($post);
        return redirect()->to('/admin/post/post_index')
                         ->with('info', 'Success - Post unpublished');
    } else {
        // if the current post is UNPUBLISHED, then set it to PUBLISHED
        $post->post_is_published = 1;
        $this->model->save($post);
        return redirect()->to('/admin/post/post_index')
                         ->with('info', 'Success - Post published');
    }
}
} // end class

我终于弄明白了。在我的 UserModel 中，我没有将 'is_active' 添加到 protected $allowedFields 。我现在已将“is_active”添加到 allowedFields 中并且它可以工作。