feat: Change IAB blog feed to a generalized topic based feed

ietf/blog/feeds.py

@@ -37,11 +37,15 @@ def item_author_name(self, item):
     def item_pubdate(self, item):
         return item.date
 
-class IABBlogFeed(BlogFeed):
+class TopicBlogFeed(BlogFeed):
+    def __call__(self, request, *args, **kwargs):
+        self.topic = kwargs.get('topic')
+        return super().__call__(request, *args, **kwargs)
+
     def items(self):
         return (
             BlogPage.objects.live()
-            .filter(topics__topic__slug="iab")
+            .filter(topics__topic__slug=self.topic)
             .annotate(d=Coalesce("date_published", "first_published_at"))
             .order_by("-d")
         )

ietf/blog/tests.py

@@ -108,15 +108,28 @@ def test_blog_feed(self):
         self.assertIn(self.blog.url.encode(), r.content)
         self.assertIn(self.otherblog.url.encode(), r.content)
 
-    def test_iab_feed(self):
-        topic=Topic(title="iab", slug="iab")
-        topic.save()
-        iab_topic = BlogPageTopic(topic=topic, page=self.otherblog)
+    def test_topic_feed(self):
+        iab_topic = Topic(title="iab", slug="iab")
         iab_topic.save()
-        self.otherblog.topics = [iab_topic, ]
+        iab_bptopic = BlogPageTopic(topic=iab_topic, page=self.otherblog)
+        iab_bptopic.save()
+        self.otherblog.topics = [iab_bptopic, ]
         self.otherblog.save()
+        iesg_topic = Topic(title="iesg", slug="iesg")
+        iesg_topic.save()
+        iesg_bptopic = BlogPageTopic(topic=iesg_topic, page=self.otherblog)
+        iesg_bptopic.save()
+        self.nextblog.topics = [iesg_bptopic, ]
+        self.nextblog.save()
 
         r = self.client.get(path='/blog/iab/feed/')
         self.assertEqual(r.status_code, 200)
-        self.assertNotIn(self.blog.url.encode(), r.content)
         self.assertIn(self.otherblog.url.encode(), r.content)
+        self.assertNotIn(self.blog.url.encode(), r.content)
+        self.assertNotIn(self.nextblog.url.encode(), r.content)
+
+        r = self.client.get(path='/blog/iesg/feed/')
+        self.assertEqual(r.status_code, 200)
+        self.assertIn(self.nextblog.url.encode(), r.content)
+        self.assertNotIn(self.blog.url.encode(), r.content)
+        self.assertNotIn(self.otherblog.url.encode(), r.content)

ietf/urls.py

@@ -8,7 +8,7 @@
 from wagtail.documents import urls as wagtaildocs_urls
 
 from ietf.bibliography import urls as bibliography_urls
-from ietf.blog.feeds import BlogFeed, IABBlogFeed
+from ietf.blog.feeds import BlogFeed, TopicBlogFeed
 from ietf.search.views import search
 from ietf.snippets import urls as snippet_urls
 
@@ -21,7 +21,7 @@
     url(r"^bibliography/", include(bibliography_urls)),
     url(r"^django-admin/", admin.site.urls),
     url(r"^blog/feed/$", BlogFeed(), name="blog_feed"),
-    url(r"^blog/iab/feed/$", IABBlogFeed(), name="iab_blog_feed"),
+    url(r"^blog/(?P<topic>.+)/feed/$", TopicBlogFeed(), name="blog_feed_with_topic"),
     url(r"^admin/", include(wagtailadmin_urls)),
     url(r"^documents/", include(wagtaildocs_urls)),
     url(r"^search/$", search, name="search"),