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我将 PHP Fractal 库用于我的 Laravel API 响应。我的模型是一个Post有很多Comments. 我想要做的是让所有帖子按过去 X 天收到的评论数量排序。基本上这个 API 调用：

GET /api/posts?include=comment_count:since_days(7)&sort=comment_count:desc`

因此，我正在使用PostTransformer解析包含参数并在请求此包含时添加原始资源的 a：

class PostTransformer extends TransformerAbstract 
{

  // ...

  public function includeCommentCount(Post $post, ParamBag $params = null) 
  {
    $sinceDays = // ... extract from ParamBag

    $commentCount = $post->getCommentCountAttribute($sinceDays);

    return $this->primitive($commentCount);
  }
}

包含工作正常，并允许since_days按照分形库中的预期指定参数。但是，我不确定现在如何对帖子进行排序。这是我的PostController：

class PostController extends Controller
{
  // ...

  public function index(Request $request)
  {
    $orderCol, $orderBy = // ... parse the sort parameter of the request

    // can't sort by comment_count here, as it is added later by the transformer
    $paginator = Post::orderBy($orderCol, $orderBy)->paginate(20);
    $posts = $paginator->getCollection();

    // can't sort by comment_count here either, as Fractal doesn't allow sorting resources
    return fractal()
      ->collection($posts, new PostTransformer())
      ->parseIncludes(['comment_count'])
      ->paginateWith(new IlluminatePaginatorAdapter($paginator))
      ->toArray();
  }
}

这个问题有解决方案吗？

4

0 回答 0