def feed
      @posts   = Post.published.limit(FEED_POSTS_LIMIT)
      @updated = @posts.first.try(:updated_at)

      render 'feed', layout: false
    end
def feed
      @posts   = Post.published.limit(FEED_POSTS_LIMIT)
      @updated = @posts.first.try(:updated_at)

      render 'feed', layout: false
    end
GET /posts/feed