public async Task<IHttpActionResult> PostTable(Table model)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            db.Tables.Add(model);

            try
            {
                await db.SaveChangesAsync();
            }
            catch (DbUpdateException)
            {
                if (TableExists(model.Id))
                {
                    return Conflict();
                }
                else
                {
                    throw;
                }
            }
            var ret = await db.Tables.Select(TableDTO.SELECT).FirstOrDefaultAsync(x => x.Id == model.Id);
            return CreatedAtRoute("DefaultApi", new { id = model.Id }, model);
        }
        public async Task<IHttpActionResult> PutTable(int id, Table model)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

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

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

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

            return StatusCode(HttpStatusCode.NoContent);
        }