{% if (article.prev_article_in_category) or (article.next_article_in_category) %} {% endif %} {% if article.prev_article_in_category %} Previous article in this category ← {{ article.prev_article_in_category.title }} {% endif %} {% if article.next_article_in_category %} Next article in this category {{ article.next_article_in_category.title }} → {% endif %} {% if (article.prev_article_in_category) or (article.next_article_in_category) %}