public async Task <IActionResult> PostExchangeRateByCustomer([FromBody] ExchangeRateByCustomer exchangeRateByCustomer)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            _context.ExchangeRateByCustomers.Add(exchangeRateByCustomer);
            await _context.SaveChangesAsync();

            return(CreatedAtAction("GetExchangeRateByCustomer", new { id = exchangeRateByCustomer.Id }, exchangeRateByCustomer));
        }
        public async Task <IActionResult> PutExchangeRateByCustomer([FromRoute] int id, [FromBody] ExchangeRateByCustomer exchangeRateByCustomer)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            if (id != exchangeRateByCustomer.Id)
            {
                return(BadRequest());
            }

            _context.Entry(exchangeRateByCustomer).State = EntityState.Modified;

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!ExchangeRateByCustomerExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(Ok(_context.ExchangeRateByCustomers.Find(id)));
        }