More Helpful Error Messages for Relationship Type Mismatches

I encountered the following error today: "{"errors":[{"title":"Type Mismatch","detail":"category is not a valid type for this operation.","code":"116","status":"400"}]}". My Ingredient resources has a belongs-to relationship to Category. Eventually through Dan Gebhardt's help I came to realize that I should have been using the plural name of the resource in my request.

It'd be nice to have a more helpful error message when such an error occurs. Imagine my error message also included a list of valid types, e.g. "Valid types include 'categories', 'cars', 'sith-lords'." Perhaps this would only apply in dev mode, though it may not hurt in prod too.

この issue ではファイル、テスト、エントリポイントが指定されていません。まず、無効な relationship resource type を処理するエラーパスを特定し、関連するエラーレスポンスのテストを確認してください。Mismatch レスポンスで有効な resource type が示され、開発環境と本番環境の動作の違いが解決されれば完了です。