$maintenance->with([
          'user_post' => function($query, Request $request){
                if($request->has('searchBy') && $request->has('searchQuery'))
                {
                    $parse_query = explode('.',$request->query('searchBy'));
                    $is_user = $parse_query[0] == 'user_post'? true : false;
                    if($is_user)
                    {
                        $query->where($parse_query[1],'LIKE','%'.$request->query('searchQuery').'%');
                    }
                }
            },
            'dt_project'
        ]);