/**
  *	Lay bai dang theo user
  *	@var string user_id
  *	@return array 2-D
  */
 public static function getUserPost($user_id)
 {
     $result = self::where("user_id", "=", $user_id)->get();
     if (isset($result)) {
         foreach ($result as $index => $item) {
             $temp = Users::getInformation(['param1' => 'user_id', 'param2' => $item['user_id']]);
             $item['user_id'] = $temp['full_name'];
             $temp = Category::getItemInfor($item['category_id']);
             $item['category_id'] = $temp['name'];
             $temp = Category_lv2::getItemInfor($item['category_id2']);
             $item['category_id2'] = $temp['name'];
         }
         return $result->toArray();
     } else {
         return null;
     }
 }