Add search feature in RSS feed

apps/rp/feeds/feeds.py

 from django.contrib.syndication.views import Feed
-from django.urls import reverse
+from django.db.models import Q
+
 from rp.models import Article
 
 class ArticlesFeed(Feed):
@@ -37,7 +38,20 @@ class ArticlesTagsFeed(ArticlesFeed):
         pass
 
     def items(self):
-        return Article.objects.filter(tags__name__in=[self.filter_tag])[:25]
+        return Article.objects.filter(tags__name__in=[self.filter_tag]) \
+                              .order_by('-created_at')[:25]
 
     def get_object(self, request, filter_tag):
         self.filter_tag = filter_tag
+
+class ArticlesSearchFeed(ArticlesFeed):
+    def __init__(self, **kwargs):
+        pass
+
+    def items(self):
+        return Article.objects.filter(Q(title__icontains=self.search_keywords)
+                                      | Q(extracts__icontains=self.search_keywords)) \
+                                      .order_by('-created_at')[:25]
+
+    def get_object(self, request, search_keywords):
+        self.search_keywords = search_keywords

apps/rp/feeds/urls.py

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