Add ability to get latest articles on RSS feed (#11956)

* Add query string option for filtering latest articles

* Show last featured articles on /feed/latest

* Add handle_latest_feed method

* Add support for page query

* Use better naming

* Use functionailty of LargeForemExperimental#latest_feed instead of calling the service

* Include 'not featured articles' on feed

* Cleanup

app/controllers/articles_controller.rb

@@ -26,6 +26,9 @@ class ArticlesController < ApplicationController
                   handle_user_or_organization_feed
                 elsif params[:tag]
                   handle_tag_feed
+                elsif request.path == latest_feed_path
+                  @articles.where("score > ?", Articles::Feeds::LargeForemExperimental::MINIMUM_SCORE_LATEST_FEED)
+                    .includes(:user)
                 else
                   @articles.where(featured: true).includes(:user)
                 end

config/routes.rb

@@ -495,6 +495,7 @@ Rails.application.routes.draw do
 
     get "/feed" => "articles#feed", :as => "feed", :defaults => { format: "rss" }
     get "/feed/tag/:tag" => "articles#feed", :as => "tag_feed", :defaults => { format: "rss" }
+    get "/feed/latest" => "articles#feed", :as => "latest_feed", :defaults => { format: "rss" }
     get "/feed/:username" => "articles#feed", :as => "user_feed", :defaults => { format: "rss" }
     get "/rss" => "articles#feed", :defaults => { format: "rss" }
 

spec/requests/articles/articles_spec.rb

@@ -159,6 +159,22 @@ RSpec.describe "Articles", type: :request do
     end
   end
 
+  describe "GET /feed/latest" do
+    let!(:last_article) { create(:article, featured: true) }
+    let!(:not_featured_article) { create(:article, featured: false) }
+    let!(:article_with_low_score) do
+      create(:article, score: Articles::Feeds::LargeForemExperimental::MINIMUM_SCORE_LATEST_FEED)
+    end
+
+    before { get "/feed/latest" }
+
+    it "contains latest articles" do
+      expect(response.body).to include(last_article.title)
+      expect(response.body).to include(not_featured_article.title)
+      expect(response.body).not_to include(article_with_low_score.title)
+    end
+  end
+
   describe "GET /feed/tag" do
     context "when :tag param is given and tag exists" do
       before do