Only show tag cloud and related posts if there are actually things to show

Author: bitbrain

_includes/tagcloud.html

@@ -1,7 +1,8 @@
 
 {% if site.plugins contains "jekyll/tagging" %}
-<h2>All tags</h2>
-<div class="tag-cloud">
-    {{ site | tag_cloud }}
-</div>
+{% assign size = site | tag_cloud | size %}
+  {% if size != 0 %}
+  <h2>All tags</h2>
+  <div class="tag-cloud">{{ site | tag_cloud }}</div>
+  {% endif %}
 {% endif %}

_layouts/post.html

@@ -24,6 +24,8 @@ <h1 class="post-title">{{ page.title }}</h1>
 </div>
 {% endif %}
 
+{% assign size = site.related_posts | size %}
+{% if size != 0 %}
 <div class="related">
   <h2>Related Posts</h2>
   <ul class="related-posts">
@@ -38,4 +40,5 @@ <h3>
     {% endfor %}
   </ul>
 </div>
+{% endif %}
 {% include tagcloud.html %}