Add filter by tag for RSS feed

apps/rp/feeds/feeds.py

@@ -31,3 +31,13 @@ class ArticlesFeed(Feed):
 
     def item_categories(self, item):
         return item.tags.all()
+
+class ArticlesTagsFeed(ArticlesFeed):
+    def __init__(self, **kwargs):
+        pass
+
+    def items(self):
+        return Article.objects.filter(tags__name__in=[self.filter_tag])[:25]
+
+    def get_object(self, request, filter_tag):
+        self.filter_tag = filter_tag

apps/rp/feeds/urls.py

 from django.conf.urls import url
-from .feeds import ArticlesFeed
+from .feeds import ArticlesFeed, ArticlesTagsFeed
 
 urlpatterns = [
     url(r'^$', ArticlesFeed(filter_lang='FR'), name='articles-feed'),
-    url(r'^international$', ArticlesFeed(filter_lang='EN'), name='articles-feed-international')
+    url(r'^international$', ArticlesFeed(filter_lang='EN'), name='articles-feed-international'),
+    url(r'^by-tag/(?P<filter_tag>.*)', ArticlesTagsFeed())
 ]