public IActionResult Index(SubredditPageViewModel vm)
        {
            if (!HasPasswordAlready())
            {
                return(RedirectToAction("Index", "Password", new { redirectTo = "Subreddits" }));
            }

            vm.IsMobile = IsMobile();
            return(View(vm));
        }
        public IActionResult _Subreddits(SubredditPageViewModel vm)
        {
            if (!HasPasswordAlready())
            {
                return(RedirectToAction("Index", "Password", new { redirectTo = "Subreddits" }));
            }

            IQueryable <RedditPost> postsQuery = from m in _redditPostContext.RedditPost select m;
            var subredditNames = postsQuery.Select(post => post.Subreddit).Distinct().OrderBy(subredditName => subredditName.ToLower()).ToList();

            var iconQuery = from m in _subredditInfoContext.SubredditInfo select m;
            var subredditsAlreadyStored = iconQuery.Select(subreddit => subreddit.SubredditName).ToList();
            var subredditsToRetrieve    = subredditNames.Where(subName => !subredditsAlreadyStored.Contains(subName)).ToList();

            foreach (string subredditName in subredditsToRetrieve)
            {
                GetSubredditInfo(subredditName);
            }

            SubredditsViewModel itemsVm = CreateViewModel(postsQuery, vm.SortingSetting, vm.NsfwSetting);

            return(PartialView(itemsVm));
        }