add a tagging system to the website

template/_feed_atom.hbs

@@ -2,21 +2,27 @@
 
 <!--
 
-%% title = "riki's house Atom feed"
+title = "riki's house Atom feed"
 
-- ### remarks
++++
 
-    - the treehouse is kind of impossible to represent in plain text due to its foldability and interactive elements.
-    the intent is that you read the linked HTML pages, not the feed itself!
+## Remarks
 
-    - each feed entry is tagged with one or more <category>.
-    you can use that to tell your feed reader to hide tags you're not interested in.
+This feed contains no content.
+This is not only to save bandwidth as the feed grows larger and larger, but also so that you can appreciate my website in full.
+I put a lot of thought into its design and typography, and surely reading my writing *as I write it* rather than _as your feed reader renders it_ will improve your experience.
+
+If you don't like that, please feel free to not subscribe (or unsubscribe).
+
+## Tags
+
+If you'd like to filter by tag, you can do so by subscribing to /feed/{tag}.atom, e.g. /feed/programming.atom.
 
 -->
 
 <feed xmlns="http://www.w3.org/2005/Atom">
     <id>{{ config.user.canonical_url }}</id>
-    <updated>{{ feed.updated }}</updated>
+    <updated>{{ updated }}</updated>
 
     <title>{{ config.user.title }}</title>
     <subtitle>{{ config.user.description }}</subtitle>
@@ -29,17 +35,17 @@
         <uri>{{ config.user.canonical_url }}</uri>
     </author>
 
-    {{#each feed.entries}}
+    {{#each feed.entries as |entry|}}
     <entry>
-        <id>{{ ../config.user.feed_id_prefix }}/b?{{ id }}</id>
+        <id>{{ ../config.user.feed_id_prefix }}/{{ id }}</id>
         <updated>{{ updated }}</updated>
         <link rel="alternate" type="text/html" href="{{ url }}"/>
 
         <title type="html">{{ title }}</title>
-        {{#each categories as |category|}}
-        <category term="{{ category }}"/>
+        {{#each tags as |tag|}}
+        <category term="{{ tag }}"/>
         {{/each}}
-        <summary type="html">{{ summary }}</summary>
+        <content type="text/html" src="{{ url }}"/>
     </entry>
     {{/each}}
 </feed>