public static BookViewModel ToViewModel(this BookEntity entity)
{
BookViewModel vm = new BookViewModel();
vm.ID = entity.ID;
vm.Title = entity.Title;
vm.Image = entity.Image;
vm.OriginTitle = entity.OriginTitle;
vm.Summary = entity.Summary;
vm.Authors = SerializerHelper.DeserializeByJsonConvert <List <string> >(entity.Authors);
vm.Translators = SerializerHelper.DeserializeByJsonConvert <List <string> >(entity.Translators);
vm.Create = DateTimeUtil.ConvertTime(entity.Create);
return(vm);
}