public IActionResult GetSubcategoryByCategoryId(int id) { var subcategories = _repo.GetSubcategoriesByCategoryId(id); if (subcategories.Count() == 0) { return(BadRequest("No subcategories with this category id")); } var subcategoriesToReturn = _mapper.Map <IEnumerable <SubCategoryDto> >(subcategories); return(Ok(subcategoriesToReturn)); }