RSS/Atom for Blog (MozillaFoundation#3681)

* rss/atom for /blog/ posts

Pipfile

@@ -4,6 +4,7 @@ verify_ssl = true
 name = "pypi"
 
 [packages]
+beautifulsoup4 = "*"
 "boto3" = "*"
 Django = "==2.2.5"
 dj-database-url = "*"

network-api/networkapi/settings.py

@@ -75,6 +75,7 @@
     CLOUDINARY_CLOUD_NAME=(str, ''),
     CLOUDINARY_API_KEY=(str, ''),
     CLOUDINARY_API_SECRET=(str, ''),
+    FEED_LIMIT=(int, 10),
 )
 
 # Read in the environment
@@ -587,3 +588,6 @@
 
 # Use network_url to check if we're running prod or not
 NETWORK_SITE_URL = env('NETWORK_SITE_URL')
+
+# RSS / ATOM settings
+FEED_LIMIT = env('FEED_LIMIT')

network-api/networkapi/urls.py

@@ -4,6 +4,7 @@
 from django.conf.urls.static import static
 from django.contrib import admin
 from django.views.generic.base import RedirectView
+from django.urls import path
 
 from wagtail.admin import urls as wagtailadmin_urls
 from wagtail.documents import urls as wagtaildocs_urls
@@ -12,6 +13,7 @@
 
 from networkapi.views import EnvVariablesView, review_app_help_view
 from networkapi.buyersguide import views as buyersguide_views
+from networkapi.wagtailpages.rss import RSSFeed, AtomFeed
 from experiments import views as experiment_views
 
 admin.autodiscover()
@@ -55,6 +57,11 @@
     # Buyer's Guide / Privacy Not Included
     url(r'^privacynotincluded/', include('networkapi.buyersguide.urls')),
 
+    # Blog RSS feed
+    path('blog/rss/', RSSFeed()),
+    path('blog/atom/', AtomFeed()),
+
+    # wagtail-managed data
     url(r'', include(wagtail_urls)),
 )
 

network-api/networkapi/wagtailpages/rss.py

@@ -0,0 +1,48 @@
+from django.conf import settings
+from django.contrib.syndication.views import Feed
+from django.utils.feedgenerator import Atom1Feed
+
+from bs4 import BeautifulSoup
+
+from .models import IndexPage
+
+
+class RSSFeed(Feed):
+    """
+    Blog page RSS feed, using the content:encoded serializer above
+    """
+
+    title = 'Mozilla Foundation Blog'
+    link = 'https://foundation.mozilla.org/blog/'
+    feed_url = 'https://foundation.mozilla.org/blog/rss/'
+    description = 'The Mozilla Foundation Blog'
+
+    def items(self):
+        blog_index = IndexPage.objects.get(title__iexact='blog')
+        blog_pages = blog_index.get_all_entries()
+        return blog_pages[:settings.FEED_LIMIT]
+
+    def item_title(self, item):
+        return item.title
+
+    def item_link(self, item):
+        return item.full_url
+
+    def item_description(self, item):
+        page = item.specific
+        html = str(page.body)
+        parsed = BeautifulSoup(html, 'html.parser')
+        text = parsed.get_text()[:1000]
+        if len(text) == 1000:
+            text = f'{text}[...]'
+        return text
+
+    def item_pubdate(self, item):
+        return item.first_published_at
+
+
+class AtomFeed(RSSFeed):
+    feed_type = Atom1Feed
+    link = RSSFeed.link
+    feed_url = 'https://foundation.mozilla.org/blog/atom/'
+    subtitle = RSSFeed.description