Use "eu_categories" frontmatter attribute

Jekyll treats names like "category" and "categories" differently, so I chose to
name it "eu_categories" in order to avoid inheriting the special treatment, and
have full control of what a category means and how it behaves.

The _includes/category.html was changed to reflect that, with an extra coupled
change that makes it not specific to articles, but any collection type.

1 files changed, 15 insertions, 15 deletions

diff --git a/_includes/categories.html b/_includes/categories.html
index 60a6ed6..22e5df3 100644
--- a/_includes/categories.html
+++ b/_includes/categories.html
@@ -1,18 +1,18 @@
-{% assign articles_with_categories = "" | split:"" %}
-{% for article in site.articles %}
-  {% if article.lang == page.lang %}
-    {% if article.category %}
-      {% assign articles_with_categories = articles_with_categories | push:article %}
+{% assign entries_with_categories = "" | split:"" %}
+{% for entry in site[include.kind] %}
+  {% if entry.lang == page.lang %}
+    {% if entry.eu_categories %}
+      {% assign entries_with_categories = entries_with_categories | push:entry %}
     {% endif %}
   {% endif %}
 {% endfor %}
-{% assign articles_with_categories = articles_with_categories | reverse %}
+{% assign entries_with_categories = entries_with_categories | reverse %}
 
 {% assign categories = "" | split:"" %}
-{% for article in articles_with_categories %}
-  {% assign article_categories = article.category | split:"," %}
-  {% for article_category in article_categories %}
-    {% assign categories = categories | push:article_category %}
+{% for entry in entries_with_categories %}
+  {% assign entry_categories = entry.eu_categories | split:"," %}
+  {% for entry_category in entry_categories %}
+    {% assign categories = categories | push:entry_category %}
   {% endfor %}
 {% endfor %}
 
@@ -22,12 +22,12 @@
     <a href="#{{ category }}">{{ category }}</a>:
   </h2>
   <ul>
-    {% for article in articles_with_categories %}
-      {% assign article_categories = article.category | split:"," %}
-      {% for article_category in article_categories %}
-        {% if category == article_category %}
+    {% for entry in entries_with_categories %}
+      {% assign entry_categories = entry.eu_categories | split:"," %}
+      {% for entry_category in entry_categories %}
+        {% if category == entry_category %}
           <li>
-            <a href="{{ article.url | relative_url }}">{{ article.title | escape }}</a> - {% include i18n-date.html date=article.date %}
+            <a href="{{ entry.url | relative_url }}">{{ entry.title | escape }}</a> - {% include i18n-date.html date=entry.date %}
           </li>
         {% endif %}
       {% endfor %}