public IHttpActionResult PostOperator(Operator @operator)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            db.ops.Add(@operator);

            try
            {
                db.SaveChanges();
            }
            catch (DbUpdateException)
            {
                if (OperatorExists(@operator.Id))
                {
                    return Conflict();
                }
                else
                {
                    throw;
                }
            }

            return CreatedAtRoute("DefaultApi", new { id = @operator.Id }, @operator);
        }
        public IHttpActionResult PutOperator(int id, Operator @operator)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

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

            db.Entry(@operator).State = EntityState.Modified;

            try
            {
                db.SaveChanges();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!OperatorExists(id))
                {
                    return NotFound();
                }
                else
                {
                    throw;
                }
            }

            return StatusCode(HttpStatusCode.NoContent);
        }