added rss

requirements.txt

@@ -1 +1,2 @@
-Flask-Markdown==0.3
+Flask-Markdown==0.3
+rfeed==1.1.1

webapp/app.py

@@ -1,6 +1,8 @@
+import datetime
 import html
 
-from flask import render_template, request, flash, redirect, url_for
+import rfeed
+from flask import render_template, request, flash, redirect, url_for, Response
 
 from webapp.routes import *
 from oshipka.webapp import app
@@ -53,3 +55,28 @@ def blog_post_filename(filename):
         flash("Blog post doesn't exist")
         return redirect(url_for('index'))
     return render_template("blog_post/get.html", instance=blog_post)
+
+
+@app.route('/rss.xml')
+def rss():
+    feed_items = []
+    for blog_post in BlogPost.query.order_by(BlogPost.created_dt.desc()).all():
+        d = blog_post.created_dt
+        pub_date = datetime.datetime(int(d[0:4]), int(d[4:6]), int(d[6:8]))
+        item = rfeed.Item(
+            title=blog_post.title,
+            link="https://blog.pi2.dev/blog_post/{}".format(blog_post.filename),
+            description="{}...".format(blog_post.body[:300]),
+            author="Daniel",
+            guid=rfeed.Guid("https://blog.pi2.dev/blog_post/{}".format(blog_post.filename)),
+            pubDate=pub_date)
+        feed_items.append(item)
+
+    feed = rfeed.Feed(
+        title="Pi2-Blog posts",
+        link="https://blog.pi2.dev/rss.xml",
+        description="Pisquared Blog - Recently updated posts",
+        language="en-US",
+        lastBuildDate=datetime.datetime.now(),
+        items=feed_items)
+    return Response(feed.rss(), mimetype='text/xml')

webapp/templates/layout.html

@@ -11,6 +11,7 @@
         href="{{ url_for('static', filename='favicons/favicon-96x96.png') }}">
   <link rel="icon" type="image/png" sizes="16x16"
         href="{{ url_for('static', filename='favicons/favicon-16x16.png') }}">
+  <link rel="alternate" type="application/rss+xml" title="PiSquared Blog Updates" href="https://blog.pi2.dev/rss.xml" />
   <style type="text/css">
     body {
       font-family: "Open Sans", Arial, sans-serif;

webapp/templates/navigation.html

@@ -1,3 +1,4 @@
 <a href="{{ url_for('home') }}">{{ _("PiSquared Blog") }}</a> |
 <a href="{{ url_for('index') }}">{{ _("Index") }}</a> |
+<a href="{{ url_for('rss') }}">{{ _("RSS") }}</a> |
 <a href="{{ url_for('aboutme') }}">{{ _("About Me") }}</a>