Add subscribe note to entries feed (#539)

Author: simonw

blog/feeds.py

@@ -57,7 +57,12 @@ def item_title(self, item):
         return item.title
 
     def item_description(self, item):
-        return item.body
+        note = (
+            '<p><em>You are only seeing the long-form articles from my blog. '
+            'Subscribe to <a href="https://simonwillison.net/atom/everything/">/atom/everything/</a> '
+            'to get all of my posts, or take a look at my <a href="https://simonwillison.net/about/#subscribe">other subscription options</a>.</em></p>'
+        )
+        return item.body + note
 
 
 class Blogmarks(Base):

blog/tests.py

@@ -287,6 +287,14 @@ def test_draft_items_not_in_feeds(self):
         self.assertContains(response6, draft_blogmark.link_title)
         self.assertContains(response6, draft_quotation.source)
 
+    def test_entries_feed_includes_subscribe_note(self):
+        EntryFactory()
+        response = self.client.get("/atom/entries/")
+        self.assertIn(
+            "You are only seeing the",
+            response.content.decode(),
+        )
+
     def test_og_description_strips_markdown(self):
         blogmark = BlogmarkFactory(commentary="This **has** *markdown*", use_markdown=True)
         response = self.client.get(blogmark.get_absolute_url())