Add support for tag oriented feeds #213

app/controllers/monologue/posts_controller.rb

@@ -17,5 +17,9 @@ def show
 
   def feed
     @posts = Monologue::Post.published.limit(25)
+    if params[:tags].present?
+      tags = Monologue::Tag.where(name: params[:tags].split(",")).pluck(:id)
+      @posts = @posts.joins(:taggings).where("monologue_taggings.tag_id in (?)", tags)
+    end
   end
 end

spec/requests/feed_spec.rb

@@ -4,10 +4,33 @@
   before(:each) do
     Factory(:post, url: "url/to/post")
   end
-  
+
   # test to prevent regression for issue #72
   it "should contain full" do
     visit feed_path
     page.should have_content "/monologue/url/to/post"
   end
+
+  context "with tags param" do
+    before do
+      create(:post, title: "Feed Post").tag!(["feed"])
+      create(:post, title: "Rss Post").tag!(["rss"])
+    end
+
+    context "with tags" do
+      it "returns posts tagged with tags" do
+        visit feed_path(tags: "feed,rss")
+        page.should have_content "Feed Post"
+        page.should have_content "Rss Post"
+      end
+    end
+
+    context "without tags" do
+      it "returns all posts" do
+        visit feed_path(tags: "")
+        page.should have_content "Feed Post"
+        page.should have_content "Rss Post"
+      end
+    end
+  end
 end