public async Task <IActionResult> AddEditBlogPost(BlogGem blog)
        {
            var svc = new BlogService();

            if (string.IsNullOrEmpty(blog.Id))
            {
                svc.AddNewBlogPost(blog, _context, await _userManager.GetUserAsync(User));
            }
            else
            {
                svc.EditBlogPost(blog, _context);
            }
            return(RedirectToAction("BlogGemManager"));
        }