// POST odata/ResourcePool
        public async Task <IHttpActionResult> Post(Delta <ResourcePool> patch)
        {
            var resourcePool = patch.GetEntity();

            // Don't allow the user to set these fields / coni2k - 29 Jul. '17
            // TODO Use ForbiddenFieldsValidator?: Currently breeze doesn't allow to post custom (delta) entity
            // TODO Or use DTO?: Needs a different metadata than the context, which can be overkill
            resourcePool.Id = 0;
            //resourcePool.UserId = 0;
            resourcePool.RatingCount           = 0;
            resourcePool.ResourcePoolRateTotal = 0;
            resourcePool.ResourcePoolRateCount = 0;
            resourcePool.CreatedOn             = DateTime.UtcNow;
            resourcePool.ModifiedOn            = DateTime.UtcNow;
            resourcePool.DeletedOn             = null;

            // Owner check: Entity must belong to the current user
            var currentUserId = User.Identity.GetUserId <int>();

            if (currentUserId != resourcePool.UserId)
            {
                return(StatusCode(HttpStatusCode.Forbidden));
            }

            try
            {
                await _resourcePoolManager.AddResourcePoolAsync(resourcePool);
            }
            catch (DbUpdateException)
            {
                // Unique key exception
                if (await _resourcePoolManager.GetResourcePoolSet(null, false).AnyAsync(item => item.Key == resourcePool.Key))
                {
                    return(new UniqueKeyConflictResult(Request, nameof(ResourcePool.Key), resourcePool.Key));
                }

                throw;
            }

            return(Created(resourcePool));
        }