public async Task<IHttpActionResult> PutHairService(int id, HairService hairService)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

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

            db.Entry(hairService).State = EntityState.Modified;

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

            return StatusCode(HttpStatusCode.NoContent);
        }
        public async Task<IHttpActionResult> PostHairService(HairService hairService)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            db.HairServices.Add(hairService);
            await db.SaveChangesAsync();

            db.Entry(hairService).Reference(x => x.Worker).Load();

            var dto = new HairServiceDTO()
            {
                Id = hairService.Id,
                Date = hairService.Date,
                Payment = hairService.Payment,
                //Duration = hairService.EndTime - hairService.StartTime,
                ClientName = hairService.ClientName,
                WorkerId = hairService.WorkerId
            };

            return CreatedAtRoute("DefaultApi", new { id = hairService.Id }, dto);
        }