public async Task <PrintingEditionsModelItem> GetById(long id)
{
var response = new PrintingEditionsModelItem();
if (id == 0)
{
response.Errors.Add(ErrorConstants.ModelIsNull);
return(response);
}
var product = await _printingEditionRepository.GetByProductIdAsync(id);
if (product == null)
{
response.Errors.Add(ErrorConstants.ImpossibleToFindProduct);
return(response);
}
var productModel = PrintingEditionMapper.MapEntityToModel(product.PrintingEdition);
foreach (var item in product.Authors)
{
var author = AuthorMapper.MapEntityToModel(item);
productModel.Authors.Add(author);
}
return(productModel);
}