public async Task<IHttpActionResult> PostFoodGroup(FoodGroup foodGroup)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            db.FoodGroups.Add(foodGroup);

            try
            {
                await db.SaveChangesAsync();
            }
            catch (DbUpdateException)
            {
                if (FoodGroupExists(foodGroup.FoodGroupId))
                {
                    return Conflict();
                }
                else
                {
                    throw;
                }
            }

            return CreatedAtRoute("DefaultApi", new { id = foodGroup.FoodGroupId }, foodGroup);
        }
        public async Task<IHttpActionResult> PutFoodGroup(int id, FoodGroup foodGroup)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            if (id != foodGroup.FoodGroupId)
            {
                return BadRequest();
            }

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

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

            return StatusCode(HttpStatusCode.NoContent);
        }