public async Task <ActionResult> Reject(int id)
        {
            var command = new RejectPostCommand {
                PostId = id
            };
            await _mediator.Send(command);

            return(Ok());
        }
        public async Task <IActionResult> RejectPost(int id)
        {
            var command = new RejectPostCommand {
                PostId = id
            };
            await _mediator.Send(command);

            return(RedirectToAction(nameof(Index)));
        }