public function postLikepost()
 {
     $data = Input::all();
     $rules = ["post_id" => 'required|exists:posts,id'];
     $validator = Validator::make($data, $rules);
     if ($validator->fails()) {
         return 404;
     } else {
         $check_like = Like::check_like(Auth::user()->id, $data['post_id']);
         if ($check_like) {
             $unlike = Like::unlike(Auth::user()->id, $data['post_id']);
             if ($unlike) {
                 $total_like = Like::total_like($data['post_id']);
                 $total_like_text = $total_like ? $total_like . " people like this" : "";
                 return json_encode(["like" => "Like", "total_like" => $total_like_text]);
             } else {
                 return 404;
             }
         } else {
             $like = Like::like(Auth::user()->id, $data['post_id']);
             if ($like) {
                 $total_like = Like::total_like($data['post_id']);
                 $total_like_text = $total_like ? $total_like . " people like this" : "";
                 return json_encode(["like" => "Unlike", "total_like" => $total_like_text]);
             } else {
                 return 404;
             }
         }
     }
 }