Refactor tutorial listing logic in tutorials.md

tutorials/tutorials.md

@@ -5,14 +5,15 @@ permalink: /tutorials/
 ## Listing Tutorials
 
 <ul>
-{% assign tutorials = site.pages | where_exp: "p", "p.path and p.path contains 'tutorials/'" %}
-{% for t in tutorials %}
-  {% assign p = t.path | default: "" %}
-  {% if p != "tutorials/index.md" and p != "tutorials/README.md" and p != "tutorials.md" %}
+{% for p in site.pages %}
+  {% assign path = p.path | default: "" %}
+  {% if path != "" and path contains "tutorials/" %}
+    {% unless path == "tutorials/index.md" or path == "tutorials/README.md" or path == "tutorials.md" %}
       <li>
-      <a href="{{ t.url | relative_url }}">{{ t.title | default: p | replace: "tutorials/", "" }}</a>
-      {% if t.date %} — <time datetime="{{ t.date | date_to_xmlschema }}">{{ t.date | date: "%Y-%m-%d" }}</time>{% endif %}
+        <a href="{{ p.url | relative_url }}">{{ p.title | default: path | replace: "tutorials/", "" }}</a>
+        {% if p.date %} — <time datetime="{{ p.date | date_to_xmlschema }}">{{ p.date | date: "%Y-%m-%d" }}</time>{% endif %}
       </li>
+    {% endunless %}
   {% endif %}
 {% endfor %}
 </ul>