gistfile1.cs

        public BlogPostPageView GetPosts(string username)
        {
            Check.Require(username.IsNullOrEmpty(), "username to get a blog must not be emtpy");

            var member = memberRepository.GetByUsername(username);
            if (member == null)
                throw new InvalidOperationException("Member with username does not exists: {0}".With(username));

            var blog = blogRepository.GetBlog(username);
            if (blog == null)
                throw new InvalidOperationException("Blog for member does not exists: {0}".With(username));

            var posts = blogRepository.Posts.ToList();

            var pageView = new BlogPostPageView
                {
                    Id = blog.Id,
                    Username = blog.Username,
                    Title = blog.Title,
                    Posts = AutoMapper.Mapper.Map<IEnumerable<Post>, IEnumerable<PostItemView>>(posts)
                };

            return pageView;
        }