public function create_category_done()
 {
     $user_info = Auth::user()->toArray();
     if ($user_info['user_type'] == 2) {
         $category = new Category();
         $cat_title = Input::get('cat_name');
         // OK
         $parent_cat_id = Input::get('parent_cat');
         // OK
         $is_category_created = $category->create_category($cat_title, $parent_cat_id);
         if ($is_category_created) {
             return redirect("category/read_category");
         } else {
             print_r('Data Not Updated');
         }
     }
     $message = "you are not admin. you can't create new category.";
     return view('welcome')->withMessage($message);
 }