Filter included resources or way around it

Hi,

Is there currently a way of filtering resources that are included to our response?

ie: I want to get and include books with that response I'll just do

address/shelves?include=books

but what if I would like to filter by only available books?

ie: address/shelves/?include=books&filter[books.available]=true

books.available is just a scope in this case

or is the preffered method to do this by declaring additional relationships in the shelf resource?
like below

class ShelfResource < JSONAPI::Resource
  has_many :books
  has_many :available_books
  ...
end

If the latter, how do I exactly specify the method for finding resources for this relationship?

I've tried that already by adding

def records_for_available_books
  _model.books.available
end

to the shelf resource but I keep getting errors when doing that.

ShelfResource の has_many :books リレーションと records_for_available_books メソッドから始め、次に include と filter[books.available] がどのように処理されるかを追跡します。報告されたエラーを再現し、リレーションの宣言と要求されたフィルタリング済みレスポンスを比較します。含める books をフィルタリングするサポートされた方法が確立されて例が動作するか、または制限事項と推奨されるリレーションの方法が文書化されれば完了です。