//GET: api/channel-messages/{channelName}
        [Route("channel-messages/{channelName}")]
        public IHttpActionResult GetChannelMessages(string channelName, [FromUri]string limit = null)
        {
            var channel = db.Channels.FirstOrDefault(c => c.Name == channelName);

            if (channel == null)
            {
                return this.NotFound();
            }

            var channelMessages = db.ChannelMessages
                .Where(m => m.ChannelId == channel.Id)
                .OrderByDescending(m => m.DateSent)
                .ThenByDescending(m => m.Text)
                .Select(m => new ChannelMessageOutputModel()
                {
                    Id = m.Id,
                    Text = m.Text,
                    DateSent = m.DateSent,
                    User = (m.Sender) == null ? null : m.Sender.UserName
                });

            if (limit != null)
            {
                int limitCount = 0;
                int.TryParse(limit, out limitCount);
                if (limitCount < 1 || limitCount > 1000)
                {
                    return BadRequest("Limit should be integer int range [1...1000]");
                }
                else
                {
                    channelMessages = channelMessages.Take(limitCount);
                }
            }

            return Ok(channelMessages);
        }