public BookCategoryEntity Create(BookCategoryEntity model)
        {
            _context.book_category.Add(model);
            _context.SaveChanges();

            return(model);
        }
        public BookCategoryEntity Delete(Guid book_category_id)
        {
            var book_category = new BookCategoryEntity()
            {
                book_category_id = book_category_id
            };

            var data = _context.book_category.Remove(book_category);

            _context.SaveChanges();

            return(book_category);
        }
        public BookCategoryEntity Update(Guid id, BookCategoryEntity modelUpdate)
        {
            var data = _context.book_category.Find(id);

            modelUpdate.book_category_id = data.book_category_id;
            modelUpdate.created_at       = data.created_at;

            data.code       = modelUpdate.code;
            data.name       = modelUpdate.name;
            data.updated_at = modelUpdate.updated_at;

            _context.SaveChanges();

            return(modelUpdate);
        }