public function DisplaySinglePost($slug)
    {
        // If this is a page, then display the page
        if ($this->isBladeFile($slug)) {
            return view('pages/' . $slug, [
                'DatesHelper'       => DatesHelper::class,
                'HTMLHelper'        => HTMLHelper::class,
                'ImagesHelper'      => $this->imagesHelper,
            ]);
        }


        // This slug refers to a single post
        $post = $this->repository->findEnabledPostBySlug($slug);

        if (count($post) == 0) {

            // post not found, so display the 404 page
            //return view('errors/404');
            return $this->home();
        }

        // Figure out if the post is using a specified featured image; or, if no such image,
        // then use the category's default image as this post's featured image.
        $post->featured_image = $this->imagesHelper->categoryImageDefaultOrSpecified($post->featured_image);

        // Resize the post's featured image -- if not yet resized.
        $this->imagesHelper->createPostResizedImageFiles($post->featured_image);


        // Set up the social media tags

        // first, set up the image
        if ($post->featured_image == "") {
            $post->featured_image = Config::get('lasallecmsfrontend.social_media_default_image');
        }
        $post->urlImage = $this->imagesHelper->urlOfImage($post->featured_image,600,600);


        // second, create the social media tag arrays
        $openGraph = HTMLHelper::createOpenGraphTagsForPost($post);
        $twitter   = HTMLHelper::createTwitterTagsForPost($post);
        $google    = HTMLHelper::createGoogleTagsForPost($post);



        // "Next" and "Previous" navigation within a single post... well, there can be multiple categories per post,
        //  so should the "Next" and "Previous" links refer to any ol' post regardless of category; or, should the
        //  "Next" and "Previous" links within a post refer strictly to posts assigned to the same category?
        //  Since my intention is to group posts by category, the answer is "assigned to the same category".
        //
        //  So... my intention is that POSTS assign to just one category, despite the ability to assign multiple categories.
        //  Hey, this multiple category thing is really intended for ecommerce, where the parent category = "Products".
        //  For regular ol' POSTS, my intention is a mandatory one category per post. Essentially creating a one-to-one
        //  relationship, which is my working assumption for "Next" and "Previous" single post navigation.

        // So, first of all, must be just one category for this post
        $category = $this->repository->findCategoryForPostById($post->id);

        if (count($category) == 1)
        {
            // Next post
            $nextPost     = $this->repository->getNextPost($category[0]->category_id, $post->publish_on);

            // Previous post
            $previousPost = $this->repository->getPreviousPost($category[0]->category_id, $post->publish_on);

            // The category's title
            $categoryTitle    = $this->repository->getCategoryTitleById($category[0]->category_id);
        }

        // tags
        $tagTitles = $this->repository->getTagTitlesByPostId($post->id);


        return view('posts/single_post', [
            'post'              => $post,
            'DatesHelper'       => DatesHelper::class,
            'HTMLHelper'        => HTMLHelper::class,
            'ImagesHelper'      => $this->imagesHelper,
            'openGraph'         => $openGraph,
            'twitter'           => $twitter,
            'google'            => $google,
            'nextPost'          => $nextPost,
            'previousPost'  => $previousPost,
            'categoryTitle'     => $categoryTitle,
            'tagTitles'         => $tagTitles,
        ]);
    }