Added config variables for related posts

Signed-off-by: George Araújo <[email protected]>

_config.yml

@@ -123,6 +123,11 @@ permalink: /blog/:year/:title/
 pagination:
   enabled: true
 
+related_blog_posts:
+  enabled: true
+  max_related: 5
+  min_common_tags: 1
+
 # Giscus comments (RECOMMENDED)
 # Follow instructions on https://giscus.app/ to setup for your repo to fill out
 # the information below.

_includes/related_posts.html

@@ -1,22 +1,20 @@
-{% assign maxRelated = 5 %}
-{% assign minCommonTags =  1 %}
-{% assign maxRelatedCounter = 0 %}
-{% assign haveRelatedPosts = false %}
+{% assign max_related_counter = 0 %}
+{% assign have_related_posts = false %}
 
 {% for post in site.posts %}
-  {% assign sameTagCount = 0 %}
+  {% assign same_tag_count = 0 %}
 
   {% for tag in post.tags %}
     {% if post.url != page.url %}
       {% if page.tags contains tag %}
-        {% assign sameTagCount = sameTagCount | plus: 1 %}
+        {% assign same_tag_count = same_tag_count | plus: 1 %}
       {% endif %}
     {% endif %}
   {% endfor %}
 
-  {% if sameTagCount >= minCommonTags %}
-    {% unless haveRelatedPosts %}
-      {% assign haveRelatedPosts = true %}
+  {% if same_tag_count >= site.related_blog_posts.min_common_tags %}
+    {% unless have_related_posts %}
+      {% assign have_related_posts = true %}
 
   <br>
   <hr>
@@ -32,15 +30,15 @@ <h2 class="text-3xl font-semibold mb-4 mt-12">Enjoy Reading This Article?</h2>
     <a class="text-pink-700 underline font-semibold hover:text-pink-800" href="{{ site.baseurl }}{{ post.url }}">{{ post.title }}</a>
   </li>
 
-  {% assign maxRelatedCounter = maxRelatedCounter | plus: 1 %}
+  {% assign max_related_counter = max_related_counter | plus: 1 %}
 
-  {% if maxRelatedCounter >= maxRelated %}
+  {% if max_related_counter >= site.related_blog_posts.max_related %}
     {% break %}
   {% endif %}
 
   {% endif %}
 {% endfor %}
 
-{% if maxRelatedCounter > 0 %}
+{% if max_related_counter > 0 %}
 </ul>
 {% endif %}

_layouts/post.html

@@ -43,8 +43,10 @@ <h1 class="post-title">{{ page.title }}</h1>
     {{ content }}
   </article>
 
-  {%- if page.related_posts == null or page.related_posts -%}
-    {% include related_posts.html %}
+  {%- if site.related_blog_posts.enabled -%}
+    {%- if page.related_posts == null or page.related_posts -%}
+      {% include related_posts.html %}
+    {%- endif %}
   {%- endif %}
 
   {%- if site.disqus_shortname and page.disqus_comments -%}